U.S. patent application number 12/386055 was filed with the patent office on 2010-01-28 for pick up device with telescoping tube.
This patent application is currently assigned to REID INDUSTRIES. Invention is credited to David Buzby, Duane Davis, Jianhong Huang, John McKenney.
Application Number | 20100021279 12/386055 |
Document ID | / |
Family ID | 41162475 |
Filed Date | 2010-01-28 |
United States Patent
Application |
20100021279 |
Kind Code |
A1 |
Buzby; David ; et
al. |
January 28, 2010 |
Pick up device with telescoping tube
Abstract
This invention provides hand operated portable adjustable length
devices for grasping and manipulation of objects as well as methods
of their use.
Inventors: |
Buzby; David; (San
Francisco, CA) ; McKenney; John; (Collierville,
TN) ; Davis; Duane; (Redondo Beach, CA) ;
Huang; Jianhong; (Suzhou, CN) |
Correspondence
Address: |
QUINE INTELLECTUAL PROPERTY LAW GROUP, P.C.
P O BOX 458
ALAMEDA
CA
94501
US
|
Assignee: |
REID INDUSTRIES
San Francisco
CA
|
Family ID: |
41162475 |
Appl. No.: |
12/386055 |
Filed: |
April 11, 2009 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
|
|
61123930 |
Apr 11, 2008 |
|
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|
Current U.S.
Class: |
414/800 ;
294/115 |
Current CPC
Class: |
A47F 13/06 20130101;
B25J 1/04 20130101; B25B 9/00 20130101 |
Class at
Publication: |
414/800 ;
294/19.1 |
International
Class: |
B25J 1/04 20060101
B25J001/04; A47F 13/06 20060101 A47F013/06; B25B 9/00 20060101
B25B009/00 |
Claims
1. An adjustable length pick up device for grasping an object, the
device comprising: a) a head region comprising two opposing jaw
members; b) a tube region operably connected to the head region;
and, c) a handle region operably connected to the tube region,
which handle region comprises a trigger mechanism; wherein
squeezing the trigger causes the jaw members to move towards each
other, and wherein the tube region comprises an adjustable
length.
2. The device of claim 1 wherein the tube region comprises a
telescoping tube.
3. The device of claim 1, wherein the tube region comprises: a
cable that is operably connected to the trigger; a toothed rod
comprising a plurality of teeth which toothed rod is operably
connected to the jaw members; and a toothed rod locking mechanism
that is operably connected to the cable; wherein squeezing the
trigger causes the toothed rod locking mechanism to operably engage
with the toothed rod.
4. The device of claim 3, wherein the head region comprises two
opposing angled jaw members, each of which jaw members comprises a
proximal end and a distal end, and each of which jaw members is
operably attached at a pivot point to a jaw base assembly, thus
allowing movement of each jaw member around its pivot point;
wherein the proximal end of both jaw members operably interacts
with a jaw actuator within the jaw base assembly, which jaw
actuator is operably connected to an actuator rod and a jaw
actuator spring and wherein the actuator rod is operably connected
to the toothed rod; wherein the handle region comprises a handle
body having a base, a trigger, and a linkage lever having a free
end wherein the cable is operably coupled to the free end of the
linkage lever; and, wherein squeezing the trigger causes the
linkage lever to extend towards the base of the handle body, thus
causing the cable to move proximally in the handle body and in the
tube region and causing the toothed rod locking mechanism to
operably engage with the toothed rod which thereby causes the
toothed rod to move proximally in the tube region, thus causing the
jaw actuator rod and jaw actuator to move proximally, which in
turn, draws in the proximal end of each jaw member, thus causing
each jaw member to move around its pivot point and causing the
distal ends of the opposing jaw members to move towards one
another.
5. The device of claim 3, wherein the toothed rod locking mechanism
comprises a lever, which lever is operably controlled by the
trigger via the cable, wherein squeezing the trigger causes the
lever of the toothed rod locking mechanism to operably engage with
the toothed rod and wherein releasing the trigger causes the lever
to operably disengage with the toothed rod.
6. The device of claim 5, wherein the lever comprises one or more
teeth which can mate with the teeth of the toothed rod.
7. The device of claim 5, wherein the jaw members comprise a
textured inner surface layer.
8. The device of claim 5, wherein each jaw member comprises a pad
area at its proximal tip.
9. The device of claim 5, wherein the jaw actuator spring exerts
pressure against the proximal end of the jaw actuator which causes
the distal ends of the jaw members to pivot away from each other as
the jaw actuator is pushed distally.
10. The device of claim 1, further comprising a latch mechanism,
wherein the latch mechanism comprises a spring loaded latch
operably attached to a latch cable that is operably coupled to a
latching lever, which latch mechanism when engaged, reversibly
locks the trigger, thereby reversibly locking the jaw members at a
desired position.
11. The device of claim 10 wherein the latch mechanism can be
engaged even when the jaw members cannot move closer together.
12. The device of claim 1, wherein the movement of the trigger
causes a movement of the jaw members over a greater distance than
that moved by the trigger.
13. The device of claim 1, wherein the handle body comprises a palm
rest area, which palm rest area comprises a thermoplastic rubber
and/or thermoplastic elastomer overlay on the handle body.
14. The device of claim 1, wherein the head region can be rotated
in relation to the tube region, and secured in one or more
orientations.
15. An adjustable length pick up device for grasping an object, the
device comprising: a) a head region comprising two opposing angled
jaw members, each of which jaw members comprises a proximal end and
a distal end, and each of which jaw members is operably attached at
a pivot point to a jaw base assembly, thus allowing movement of
each jaw member around its pivot point; wherein the proximal end of
both jaw members operably interacts with a jaw actuator within the
jaw base assembly, which jaw actuator is operably connected to an
actuator rod and a jaw actuator spring; b) a telescoping tube
region comprising an elongated hollow tube enclosing a cable, a
toothed rod, and toothed rod locking mechanism, which toothed rod,
toothed rod locking mechanism, and cable are operably connected to
the actuator rod; and, c) a handle region comprising a handle body
having a base, a trigger, and a linkage lever, wherein the cable is
operably coupled to the free bottom of the linkage lever; wherein
squeezing the trigger causes the linkage lever to extend towards
the base of the handle body thus causing the cable, the toothed rod
locking mechanism, and the toothed rod to move proximally in the
handle body and in the tube region, which movement causes the jaw
actuator rod and jaw actuator to move proximally, which in turn,
draws in the proximal end of each jaw member, thus causing each jaw
member to move around its pivot point and causing the distal ends
of the opposing jaw members to move towards one another.
16. A method of grasping and/or picking up an object, the method
comprising: a) situating two opposing angled jaw members of the
head region of an adjustable length pick up device around the
object, wherein the device also comprises a tube region operably
connected to the head region and a handle region operably connect
to the tube region, which handle region comprises a trigger
mechanism; and, b) squeezing the trigger which causes the jaw
members to move towards each other and thus grasp and/or pick up
the object.
17. The method of claim 16, wherein the tube region comprises a
telescoping tube.
18. The method of claim 17, wherein the tube region comprises: a
cable that is operably connected to the trigger; a toothed rod
comprising a plurality of teeth which toothed rod is operably
connected to the jaw members; and a toothed rod locking mechanism
that is operably connected to the cable; wherein squeezing the
trigger causes the toothed rod locking mechanism to operably engage
with the toothed rod which causes the jaw members to move towards
each other and thus grasp and/or pick up the object.
19. The method of claim 18, wherein the head region comprises two
opposing angled jaw members, each of which jaw members comprises a
proximal end and a distal end, and each of which jaw members is
operably attached at a pivot point to a jaw base assembly, thus
allowing movement of each jaw member around its pivot point;
wherein the proximal end of both jaw members operably interacts
with a jaw actuator within the jaw base assembly, which jaw
actuator is operably connected to an actuator rod and a jaw
actuator spring and wherein the actuator rod is operably connected
to the toothed rod; wherein the handle region comprises a handle
body having a base, a trigger, and a linkage lever having a free
end wherein the cable is operably coupled to the free end of the
linkage lever; and, wherein squeezing the trigger causes the
linkage lever to extend towards the base of the handle body, thus
causing the cable to move proximally in the handle body and in the
tube region and causing the toothed rod locking mechanism to
operably engage with the toothed rod which thereby causes the
toothed rod to move proximally in the tube region, thus causing the
jaw actuator rod and jaw actuator to move proximally, which in
turn, draws in the proximal end of each jaw member, thus causing
each jaw member to move around its pivot point and causing the
distal ends of the opposing jaw members to move towards one another
and thus grasp and/or pick up the object.
20. The method of claim 19, wherein the toothed rod locking
mechanism comprises a lever, which lever is operably controlled by
the trigger via the cable, wherein squeezing the trigger causes the
lever of the toothed rod locking mechanism to operably engage with
the toothed rod and wherein releasing the trigger causes the lever
to operably disengage with the toothed rod.
21. The method of claim 20, wherein the lever comprises one or more
teeth which can mate with the teeth of the toothed rod.
22. A method of grasping and/or picking up an object, the method
comprising: a) situating two opposing angled jaw members of an
adjustable length pick up device around the object, each of which
jaw members comprises a proximal end and a distal end, and each of
which jaw members is operably attached at a pivot point to a jaw
base assembly, which allows movement of each jaw member around its
pivot point; wherein the proximal end of both jaw members operably
interacts with a jaw actuator within the jaw base assembly, and
which jaw actuator is operably connected to an actuator rod; the
device also comprising an elongated hollow tube region, enclosing a
toothed rod, a toothed rod locking mechanism, and a cable, which
toothed rod, toothed rod locking mechanism, and cable are operably
connected to the actuator rod; the device also comprising a handle
region comprising a handle body, and a trigger grip having a
linkage lever, wherein the cable is operably coupled to the free
bottom of the linkage lever; and, b) squeezing the trigger causing
the linkage lever to extend downwards in the handle body towards
the base of the handle thus causing the cable, toothed rod, and
toothed rod locking mechanism to move proximally, and causing the
jaw actuator rod and jaw actuator to move proximally, and in turn,
drawing in the proximal end of each jaw member, thus causing each
jaw member to move around its pivot point and causing the distal
ends of the opposing jaw members to move towards one another and
thus grasp and/or pick up the object.
23. A method of grasping an object, the method comprising situating
two opposing jaw members of an adjustable length pick up device
around the object, which members are operably attached at pivot
points to a base assembly and to a jaw actuator; and, squeezing a
trigger of the device, which trigger moves a linkage lever and
which linkage lever is operably coupled to the opposing jaw
members; thereby moving the jaw members towards one another and
grasping the object.
24. An adjustable length device to operably connect at least two
components, the device comprising: a) a cable having a first end
and a second end; b) a rod having a first end and a second end; c)
a locking mechanism operably attached to the cable, wherein the
locking mechanism comprises a movable lever, which lever is
controllably engaged or disengaged by movement of the cable.
25. The device of claim 24, wherein the locking mechanism can be
moved along the rod when the lever is disengaged and is stationary
when the lever is engaged.
26. The device of claim 25, wherein the adjustable length device
comprises a tube that is adjustable in length.
27. The device of claim 26 wherein the rod comprises a toothed
rod.
28. The device of claim 27, wherein the lever comprises one or more
teeth capable of mating with the toothed rod.
29. The device of claim 28, wherein the cable connects to a trigger
mechanism and wherein squeezing the trigger mechanism engages the
lever with the toothed rod.
30. The device of claim 29, wherein the toothed rod is operably
connected to one or more additional components.
31. The device of claim 30, wherein the one or more additional
components comprise a par of opposable jaw members.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application claims priority to and benefit of U.S.
provisional patent application Ser. No. 61/123,930, filed Apr. 11,
2008, the specification of which is incorporated herein in its
entirety.
FIELD OF THE INVENTION
[0002] The present invention relates to hand operated portable
devices for grasping and manipulation of objects. More
specifically, the invention comprises adjustable length devices for
grasping and manipulation of objects, e.g., by persons with limited
physical ability due to age, weakness, or the like, and/or for
grasping and manipulation of objects out of normal/easy reach of
persons.
BACKGROUND OF THE INVENTION
[0003] Many persons need the ability to grasp and manipulate
objects that are normally out of their reach or that would
otherwise be inconvenient or difficult to reach. For example,
picking up objects on the ground or on high shelves can often be
problematic. Such needs are even greater for persons having limited
physical ability (e.g., due to age or infirmity). Such persons can
have limited gripping ability or hand strength or can have limited
bending or stretching ability, thus, leading to greater need for
help in picking up or reaching objects.
[0004] While a number of devices have been developed to help in
reaching/picking up objects, such prior work has been lacking in a
number of areas. For example, such devices are of a fixed length
which can limit their usability. Furthermore, such devices
typically include a direct correspondence between the distance the
trigger is moved by the user and the distance moved by the gripping
portion of the device. Such correspondence, thus often requires a
large hand movement to completely grasp small objects. Furthermore,
such devices typically require constant pressure to keep the object
grasped within the device. Various embodiments of the present
invention address the above and other issues and provide novel
adjustable length devices for grasping and/or manipulation of
objects. The current invention also provides additional advantages
which will be apparent upon reading of the description, claims, and
figures herein.
SUMMARY OF THE INVENTION
[0005] In various aspects, the current invention comprises an
adjustable length device for grasping and/or picking up
objects.
[0006] In one group of embodiments herein, the invention comprises
an adjustable length pick up device for grasping an object wherein
the devices comprise a head region comprising two opposing jaw
members, a tube region that is operably connected to the head
region and, a handle region that is operably connected to the tube
region and which comprises a trigger mechanism. In some such
devices, the tube region comprises an adjustable length and
squeezing the trigger causes the jaw members to move towards each
other. Also, in some such embodiments, the tube region comprises a
telescoping tube. Also, in some of such embodiments, the tube
region comprises: a cable that is operably connected to the
trigger; a toothed rod that has a plurality of teeth and that is
operably connected to the jaw members; and a toothed rod locking
mechanism (TRLM) that is operably connected to the cable, wherein
squeezing the trigger causes the TRLM to operably engage with the
toothed rod. Furthermore, in some of such embodiments, the head
region comprises two opposing angled jaw members, each of which jaw
members comprises a proximal end and a distal end, and each of
which jaw members is operably attached at a pivot point to a jaw
base assembly, thus allowing movement of each jaw member around its
pivot point; wherein the proximal end of both jaw members operably
interacts with a jaw actuator within the jaw base assembly, which
jaw actuator is operably connected to an actuator rod and a jaw
actuator spring and wherein the actuator rod is operably connected
to the toothed rod; wherein the handle region comprises a handle
body having a base, a trigger, and a linkage lever having a free
end wherein the cable is operably coupled to the free end of the
linkage lever; and, wherein squeezing the trigger causes the
linkage lever to extend towards the base of the handle body, thus
causing the cable to move proximally in the handle body and in the
tube region and causing the TRLM to operably engage with the
toothed rod which thereby causes the toothed rod to move proximally
in the tube region, thus causing the jaw actuator rod and jaw
actuator to move proximally, which in turn, draws in the proximal
end of each jaw member, thus causing each jaw member to move around
its pivot point and causing the distal ends of the opposing jaw
members to move towards one another. Also, in some such
embodiments, the TRLM comprises a lever (which can comprise one or
more teeth which can mate with the teeth of the toothed rod), which
lever is operably controlled by the trigger via the cable, wherein
squeezing the trigger causes the lever of the TRLM to operably
engage with the toothed rod and wherein releasing the trigger
causes the lever to operably disengage with the toothed rod.
[0007] In another group of embodiments the device comprises a head
region having two opposing jaw members with each member having a
proximal end (i.e., an end closer to the handle end and closer to
the user of the device when it is held by the handle) and a distal
end (i.e., the end further from the handle), and each of which jaw
members is operably attached at a pivot point to a jaw base
assembly. Such attachment, thus, allows movement of each jaw member
around its pivot point. In such embodiments, the proximal end of
both jaw members operably interacts with a jaw actuator within the
jaw base assembly (typically by inserting into the actuator). In
turn, the jaw actuator is operably connected to an actuator rod and
a jaw actuator spring (which helps in holding open the jaw members,
e.g., when the trigger is not being squeezed or when it is
optionally locked). Such embodiments also comprise an elongated
hollow tube region made of two or more hollow tube subparts of
differing diameter, one of which can be slid into the interior of
the other (which allows for adjustment of the overall length of the
hollow tube/shaft region) and which enclose a toothed rod, toothed
rod locking mechanism, and cable that are operably connected to the
actuator rod (via the toothed rod). Also, such embodiments comprise
a handle region comprising a handle body, an optional latch
mechanism (e.g., latching lever, latch cable, latch, latching
spring, etc.), and a trigger grip with a linkage lever (i.e., a
leverage action trigger) that has the cable operably coupled to its
free bottom end. In such embodiments, by squeezing the trigger the
linkage lever can be caused to extend downwards in the handle body
towards the handle base, which pulls the cable, the toothed rod
locking mechanism, and the toothed rod proximally in the handle
body and in the tube region. The movement of the cable and toothed
rod, etc., thus causes the jaw actuator rod and jaw actuator to
also move proximally, which in turn, draws in the proximal end of
each jaw member and causes each jaw member to move around its pivot
point so that the distal ends of the opposing jaw members move
towards one another.
[0008] In the various embodiments herein, the jaw actuator spring
can exert pressure against the proximal end of the jaw actuator
thus causing the distal ends of the jaw members to pivot away from
each other as the jaw actuator is pushed distally. Such pressure
helps in keeping the jaw members open (extended away from each
other) when the trigger/linkage lever is not squeezed and/or
locked.
[0009] In some of the various embodiments herein, the devices
comprise an optional latch mechanism which comprises a spring
loaded latch that is operably attached to a latch cable, which, in
turn, is operably coupled to a latching lever. The latch mechanism,
when set (or engaged), reversibly locks the trigger/linkage lever,
thereby reversibly locking the jaw members at a desired position.
Additionally, in some such devices having the optional latch
mechanism, expansion of the components within the device such as
the toothed strap and/or cable, etc., (e.g., when pressure is
applied on it from the trigger/linkage lever via the cable) allows
the trigger to be squeezed further in, even when the jaw members
cannot move closer together (e.g., when an object is being grasped
by the device). Such expansion thus allows the optional trigger to
move far enough into the handle body so that if the latching lever
is set, the spring loaded latch will engage and prevent the jaw
members from opening.
[0010] In the various embodiments, the devices of the invention can
have jaw members that comprise a textured inner surface layer
and/or which comprise a pad area at their proximal tips.
[0011] In some of the various devices herein, movement of the
trigger can cause a movement of the jaw members over a greater
distance than that moved by the trigger (assuming that the jaws are
allowed to freely move and are not blocked, etc.).
[0012] Also, in some of the various devices herein the handle body
can comprise a palm rest area that comprises a thermoplastic rubber
and/or thermoplastic elastomer overlay on the handle body. Such
rest area is located so as to improve user comfort and performance
by, e.g., reducing slipping, adding in durability and increasing
aesthetics.
[0013] In certain of the various embodiments, the head region of
the device can be rotated in relation to the tube region and handle
region, and secured in one or more orientations, e.g., by the
interaction of fluted or grooved areas within the tube region and
raised protuberances on the inner lumen of the proximal opening of
the jaw base assembly.
[0014] In other aspects, the invention comprises a method of
grasping and/or picking up an object by first situating two
opposing angled jaw members of the head region of an adjustable
length pick up device around the object, wherein the device also
comprises a tube region operably connected to the head region and a
handle region operably connect to the tube region, which handle
region comprises a trigger mechanism and then squeezing the trigger
which causes the jaw members to move towards each other and thus
grasp and/or pick up the object. In some such embodiments, the tube
region can comprise a telescoping tube. Also, in some such methods
the tube region can comprises: a cable that is operably connected
to the trigger; a toothed rod comprising a plurality of teeth which
toothed rod is operably connected to the jaw members; and a toothed
rod locking mechanism (TRLM) that is operably connected to the
cable wherein squeezing the trigger causes the TRLM to operably
engage with the toothed rod which causes the jaw members to move
towards each other and thus grasp and/or pick up the object.
Furthermore, in some such embodiments, the head region can
comprises two opposing angled jaw members, each of which jaw
members comprises a proximal end and a distal end, and each of
which jaw members is operably attached at a pivot point to a jaw
base assembly, thus allowing movement of each jaw member around its
pivot point; wherein the proximal end of both jaw members operably
interacts with a jaw actuator within the jaw base assembly, which
jaw actuator is operably connected to an actuator rod and a jaw
actuator spring and wherein the actuator rod is operably connected
to the toothed rod wherein the handle region comprises a handle
body having a base, a trigger, and a linkage lever having a free
end wherein the cable is operably coupled to the free end of the
linkage lever; and, wherein squeezing the trigger causes the
linkage lever to extend towards the base of the handle body, thus
causing the cable to move proximally in the handle body and in the
tube region and causing the toothed rod locking mechanism to
operably engage with the toothed rod which thereby causes the
toothed rod to move proximally in the tube region, thus causing the
jaw actuator rod and jaw actuator to move proximally, which in
turn, draws in the proximal end of each jaw member, thus causing
each jaw member to move around its pivot point and causing the
distal ends of the opposing jaw members to move towards one another
and thus grasp and/or pick up the object. In some such embodiments,
the TRLM comprises a lever (which can comprise one or more teeth
that are capable of mating with the teeth of the toothed rod),
which lever is operably controlled by the trigger via the cable,
wherein squeezing the trigger causes the lever of the TRLM to
operably engage with the toothed rod and wherein releasing the
trigger causes the lever to operably disengage with the toothed
rod.
[0015] In other aspects the invention comprises methods of grasping
and/or picking up an object with an adjustable length pick-up
device. Embodiments of such methods comprise selecting an
appropriate length at which to set the tube/shaft region of the
device (and setting it at such), situating two opposing angled jaw
members of the device around the object, each of which jaw members
comprises a proximal end and a distal end, and each of which jaw
members is operably attached at a pivot point to a jaw base
assembly (which allows movement of each jaw member around its pivot
point). In such methods, the proximal end of both jaw members
operably interacts with a jaw actuator (within the jaw base
assembly) that is operably connected to an actuator rod. The device
used in such method embodiments also comprises an adjustable length
elongated hollow tube region, enclosing a toothed rod, a toothed
rod locking mechanism, and a cable that are operably connected to
the actuator rod. Additionally, the devices in such method
embodiments also comprise a handle region comprising a handle body,
an optional latch mechanism, and a trigger grip having a linkage
lever, wherein the cable is operably coupled to the bottom of the
linkage lever. In various embodiments, after the object is
situated, the trigger is squeezed causing the linkage lever to
extend downwards in the handle body. Such extension causes the
cable and toothed rod/toothed rod locking mechanism to move
proximally and causes the jaw actuator rod and jaw actuator to move
proximally. The movement of the jaw actuator, in turn, draws in the
proximal end of each jaw member which causes each jaw member to
move around its pivot point and causes the distal ends of the
opposing jaw members to move towards one another and thus grasp
and/or pick up the object.
[0016] In yet other aspects, the invention comprises methods of
grasping and/or picking up an object by situating two opposing jaw
members of an adjustable length device around the object (which
members are operably attached at pivot points to a base assembly
and to a jaw actuator) and squeezing a trigger of the device (which
trigger moves a linkage lever and which linkage lever is operably
coupled, directly or indirectly, to the opposing jaw members),
thereby moving the jaw members towards one another and grasping the
object.
[0017] In another group of embodiments herein, the invention
comprises an adjustable length device to operably connect at least
two components. Such devices comprise: a cable having a first end
and a second end, a rod having a first end and a second end, and a
locking mechanism operably attached to the cable, wherein the
locking mechanism comprises a movable lever, which lever is
controllably engaged or disengaged by movement of the cable. In
such devices, the locking mechanism can be moved along the rod when
the lever is disengaged and is stationary when the lever is
engaged. Also, such devices can comprise a tube that is adjustable
in length and the rod can comprise a toothed rod and the lever can
comprise one or more teeth that are capable of mating with the
teeth of the toothed rod. In such embodiments, the cable can
connect to a trigger mechanism wherein squeezing the trigger
mechanism engages the lever with the toothed rod (that can be
operably connected to one or more additional components such as a
pair of opposable jaw members).
[0018] These and other devices and methods of the invention will
become more fully apparent when the following detailed description
is read in conjunction with the accompanying figures and
claims.
BRIEF DESCRIPTION OF THE DRAWINGS
[0019] FIG. 1 displays a perspective view of an example embodiment
of an adjustable length pick up device having a jaw locking
mechanism and having the jaws of the device orientated
horizontally.
[0020] FIG. 2 displays a perspective view of an example embodiment
of an adjustable length pick up device which does not have a jaw
locking mechanism and with the jaws of the device orientated
vertically.
[0021] FIG. 3 displays various components of the head region and a
portion of the distal part of the telescoping tube region of an
example embodiment of an adjustable length pick up device of the
invention.
[0022] FIG. 4 displays an exploded view of various components of
the head region of an example embodiment of the invention.
[0023] FIG. 5 displays a cut-away view of the head region and a
portion of the distal part of the telescoping tube region of an
example embodiment of the invention.
[0024] FIG. 6 displays various components of the head region and a
portion of the telescoping tube region of an example embodiment of
the invention.
[0025] FIG. 7 displays a cut-away view of the head region and a
portion of the telescoping tube region of an example embodiment of
the invention.
[0026] FIG. 8 displays an exploded view of example embodiment of an
adjustable length pick up device not having a jaw locking mechanism
and with the jaws of the device orientated vertically. Cf. FIG.
2.
[0027] FIG. 9 displays example interior components of a portion of
the telescoping tube region of an embodiment of the invention.
[0028] FIG. 10 displays a cut-away view of example interior
components of a portion of the telescoping tube region of an
embodiment of the invention.
[0029] FIG. 11 displays example interior components of a portion of
the telescoping tube region of an embodiment of the invention.
[0030] FIG. 12 displays a cut-away view of example interior
components of a portion of the telescoping tube region of an
embodiment of the invention.
[0031] FIG. 13 displays a cut-away view of example interior
components of the telescoping tube region of an embodiment of the
invention.
[0032] FIG. 14 displays an exploded view of example interior
components of a portion of the telescoping tube region of an
embodiment of the invention.
[0033] FIG. 15 shows movement of components of various different
embodiments of the telescoping tube region during their use.
[0034] FIG. 16 displays isolated example components of the
telescoping tube region of embodiments of the invention.
[0035] FIG. 17 displays an example tube locking mechanism of the
telescoping tube region of an embodiment of the invention.
[0036] FIG. 18 displays example components of the proximal end of
the telescoping tube region of an embodiment of the invention and
isolated views of an example proximal end plate and an example
floating plate.
[0037] FIG. 19 displays example components of the proximal end of
the telescoping tube region and a portion of the handle region of
an embodiment of the invention.
[0038] FIG. 20 displays two cut-away views of an example handle
region of an embodiment of the invention (not having a
locking/latching mechanism) showing movement of components within
the handle during use.
[0039] FIG. 21 displays an exploded view of example components of
the handle region of an embodiment of the invention (not having a
locking/latching mechanism).
[0040] FIG. 22 displays various components an example handle region
of an embodiment of the invention (having a jaw locking/latching
mechanism.
[0041] FIG. 23 displays various components of the handle region of
an example embodiment of the invention (having a locking/latching
mechanism).
[0042] FIG. 24 displays three views of various components of the
handle region of an example embodiment of the invention (having a
jaw locking/latching mechanism).
DETAILED DESCRIPTION
[0043] Before describing the present invention in detail, it is to
be understood that this invention is not limited to particular
embodiments, which can, of course, vary. It is also to be
understood that the terminology used herein is for the purpose of
describing particular embodiments only, and is not necessarily
intended to be limiting. As used in this specification and the
appended claims, terms in the singular and the singular forms "a,"
"an," and "the" include plural referents unless the context clearly
dictates otherwise. Thus, for example, reference to "a pick up
device" also includes a plurality of pick up devices, "a tooth"
also includes a plurality of teeth, and the like.
[0044] Various exemplary embodiments of the present invention are
illustrated in the accompanying figures. General perspective views
of adjustable length pick up devices are shown in FIGS. 1 (with a
latching mechanism to hold the jaws in place) and 2 (without a
latching mechanism to hold the jaws in place). For purposes of
description and illustration, the various adjustable length pick up
devices of the invention, e.g., pick up device 100 in FIG. 1 or in
FIG. 2, can roughly be considered in three sections. Thus, the
device comprises a head region comprising two opposing jaws, Region
A; an adjustable length tube (or shaft) region, Region B,
comprising an extendable/adjustable elongated tube(s) or hollow
structure(s); and a handle region, Region C, comprising a handle, a
trigger, and an optional jaw locking (or latching) mechanism.
[0045] While the elements in each section are generally discussed
separately herein, it will be appreciated that such description
should not be taken as limiting upon either the devices or
uses/operation of the invention or upon the interaction or
connectivity of the elements of the invention. Thus, it will be
appreciated that various aspects of the embodiments shown in
particular Figures (e.g., the linkage lever components in FIG. 20
or 24) can be applicable to the various embodiments of the
telescoping pick up devices even though the components of FIG. 20
or 24 are not shown in every figure, etc.
Telescoping Tube Region
[0046] One of the benefits of the embodiments of the current
invention is that the overall length of the devices can be adjusted
by changing the length of the telescoping tube region. See Region B
in FIG. 1. Because of the adjustable lengths, the embodiments of
the invention can be used in a wider array of settings, e.g., they
can be used to more conveniently grasp items over a wider range of
distances.
[0047] It will be appreciated that the various embodiments of the
invention can optionally comprise different components in order to
allow adjustment in length of the device and that recitation of
particular components/configurations, etc., should not necessarily
be taken as limiting. Thus, for example, some embodiments can
comprise a toothed rod locking mechanism (TRLM) lever with one
tooth, while other embodiments can comprise a lever with two teeth,
etc. See below.
[0048] It will also be appreciated that the telescoping mechanism
(e.g., the telescoping tubes/shafts and their internal components,
etc.) of the pick up devices herein can optionally be used with
other non-pick up devices or with other types of pick up devices
than those described herein. Thus, the telescoping components of
the devices herein can also be applicable to telescoping devices
used to, e.g., cut or trim items (as in pruning shears), to move an
item (as in a paintbrush, etc.) or the like.
[0049] As can be seen in FIGS. 1 and 2 in adjustable length pick up
devices of the invention, interacting hollow tubes 135 and 136
connect the head region of the device with the handle region of the
device. The hollow tubes comprise at least two subparts (e.g.,
distal tube 135 and proximal tube 136 as shown in FIGS. 1 and 2).
Of course, it will be appreciated that other embodiments of the
invention can comprise a greater number of tube subparts, e.g., 3,
4, 5, 10, 20, or more. In general, components of the devices herein
are described as distal or proximal depending upon their spatial
relation with the handle of the device, with "distal" components
being further from the handle and "proximal" components being
closer to the handle. In particular embodiments, one subpart of the
telescoping tube or shaft region is of smaller overall diameter
than the lumen opening of the other subpart, thus allowing the
smaller subpart to slide into the wider subpart (e.g., the distal
tube can slide into the interior of the proximal tube). See, e.g.,
FIGS. 8, 12, and 13. It will be appreciated that while in the
present description the distal tube is shown as a smaller diameter
than the proximal tube (and thus capable of sliding within the
proximal tube), in some embodiments, the reverse is true. In other
words, in some embodiments, the proximal tube is of smaller
diameter, and can slide into, the distal tube. Because the smaller
diameter tube can be inserted into the larger tube, the overall
length of the hollow tube can thus be adjusted.
[0050] In various embodiments, the ends of the telescoping tubes
mate with the proximal end of the jaw base assembly (meeting point
131) and with the distal end of the handle (meeting point 144). In
certain embodiments, the ends of the tubes are inserted within the
jaw base assembly and the handle. The ends of the jaw base assembly
and the handle can have specific diameters at such mating points so
that the tubes fit snugly therein. See, e.g., FIGS. 5, 7, 19, 20,
23, etc. The telescoping tube can be held in place with the jaw
base assembly and with the handle by friction, by glue or adhesive,
by spot welds, by crimping, by screws, bolts, clamps, or the like,
or by any combination thereof. The subparts of the telescoping
tubes can be of different lengths and diameters in different
embodiments, thus, allowing different embodiments to have different
possible overall adjustable lengths possible.
[0051] In particular telescoping embodiments, one or more of the
interlocking tubes can comprise fluting, or grooves, on their
shafts (e.g., groove 1200). See below and FIGS. 2, 3, 8, 12, 17,
etc. In such embodiments, the tubes can comprise, e.g., two grooves
opposite each other on either side of the tube. The flutes in the
tubes can, e.g., add structural integrity and/or strength to the
telescoping tube and/or aid in stability and orientation of the
telescoping pieces. For example, in some embodiments, the flutes of
the distal tube can mate with flutes of the proximal tube. In some
embodiments, only one part of the telescoping tube comprises
fluting, e.g., in some embodiments, only the distal tube comprises
fluting while the proximal tube does not or in some embodiments,
only the tube that slides inside the other tube has flutes. As seen
in the figures, various components within the tube/shaft, e.g., the
toothed rod locking mechanism (TRLM), the distal plate, the
floating plate, the proximal plate, etc., can also be fluted to
match the fluting of the tube/shaft. See, e.g., FIGS. 6, 8, 9, 18,
etc. The fluting can also help guide such internal mechanisms
(e.g., those for the telescoping aspect and/or those for movement
of the jaws). Such fluting also can add decorative interest and can
in certain embodiments, aid in rotation of the head region around
the shaft. See below.
[0052] In various embodiments, the telescoping tubes are
constructed from or comprise, e.g., metal (e.g., aluminum, anodized
aluminum, steel, stainless steel, iron, magnesium, magnesium alloy,
or various metallic alloys), plastic (e.g., a polycarbonate, a
polyvinyl, a thermoplastic, a thermoplastic elastomer, a
thermoplastic rubber, a polyoxymethylene, Lexan.RTM., Delrin.RTM.,
etc.), ceramic, polymer, resin, or any combinations thereof. In
certain embodiments, the tubes comprise anodized aluminum, while in
other certain embodiments, the tubes comprise polyoxymethylene,
Lexan, and/or Delrin.
[0053] In the various embodiments herein, the action of the trigger
from the handle region is operably connected to movement of the
jaws of the device via a mechanism (e.g., within the telescoping
tube region) that can controllably connect and disconnect the
trigger and the jaws. For example, the mechanism can operably
connect the trigger and the jaws when the trigger is squeezed and
disconnect the trigger/jaws when the trigger is not squeezed. The
action of such mechanism is independent of the overall length of
the telescoping tube region. It will be appreciated that while
particular components and configurations of various embodiments of
the mechanism for the operable connection between the trigger
action and the jaw movement are depicted herein, such recitations
should not necessarily be taken as limiting. Thus, in particular
embodiments herein, the mechanism that operably
connects/disconnects the trigger and the jaws of the device
comprises a toothed rod locking mechanism (TRLM). Thus in some
embodiments, a TRLM can operably connect/disconnect a cable (which
in turn is operably attached to the trigger via the linkage lever)
and a toothed rod (which in turn is operably connected to the jaws
via the actuator rod).
[0054] In particular embodiments, a toothed rod, e.g., toothed rod
590 in FIG. 5, connects the actuator rod (e.g., rod 351 in FIG. 3)
with a cable, e.g., cable 660 or similar, via a toothed rod locking
mechanism (or toothed rod gripping mechanism), e.g., toothed rod
locking mechanism (TRLM) 640. Thus, in such embodiments, the
mechanism that operably connects the trigger action and the jaw
movement comprises a TRLM (e.g., TRLM 640). Such interaction
between the toothed rod, the TRLM, and the cable allows a user of
the device to close the device's jaws by pulling the trigger.
However, because such interaction is released when the trigger is
released (assuming that the jaws are not locked with an optional
jaw latching mechanism), the length of the hollow tube or shaft can
also be adjusted. See below.
[0055] In certain embodiments, at its distal end, the toothed rod
attaches to the actuator rod in the jaw base assembly. See, e.g.,
FIGS. 5 and 6. It will be appreciated that the interaction of the
actuator rod and the toothed rod can occur within the jaw base
assembly or within the telescoping tube region, depending on the
embodiment. The toothed rod can attach to the actuator rod in a
number of ways. For example, the toothed rod can bifurcate around
the proximal end of the actuator rod (forming bifurcation area 610)
and be connected via pin 876 or other similar connection at pin
location 575. At its proximal end, the toothed rod is typically
unattached and can freely move distally and proximally in the tube
region. See, e.g., FIGS. 8, 19, etc. In some embodiments, the
proximal end of the toothed rod is flanged (see FIG. 19), e.g., to
help prevent the toothed rod from being pulled too far out
(distally). The flanges can prevent the toothed rod from being
pulled all the way through the TRLM. In other embodiments, the
proximal end of the toothed rod can comprise a pin (such as pin
811) which is wider than the width of the end of the toothed rod
and which is also wider than the opening in the TRLM (e.g., opening
1620) through which the toothed rod traverses, thus also preventing
the toothed rod from being pulled too far out. In between its two
ends, the toothed rod traverses the toothed rod locking mechanism
(TRLM). As will be appreciated, the location of the TRLM on the
toothed rod can vary as the length of the telescoping tube is
adjusted. Thus, when one telescoping tube is pushed inside the
other one (i.e., to in order to decrease the overall length of the
device), the TRLM interacts with the toothed rod at a point closer
to the distal end of the toothed rod, while when the telescoping
tube is extended, the TRLM interacts with the toothed rod at a
point closer to the proximal end of the toothed rod.
[0056] As can be seen in FIGS. 5, 6, 9, 14, etc., the toothed rod
can optionally have teeth or similar crenellations in order to
interact with the TRLM. As explained in more detail below, the
toothed rod and the TRLM can interact via a TRLM lever. In the
various embodiments having teeth or ridges/crenellations on the
toothed rod, such teeth can be of different depth (i.e., one
embodiment can have teeth that have a greater distance from their
tips to their troughs than another embodiment), can be of different
shape (e.g., teeth can be wide and shallow, teeth can be steep and
thin, etc.). Furthermore, in some embodiments, the toothed rod can
comprise outer sidewalls. See, e.g., FIG. 6. However, as shown in
FIG. 14, the teeth or crenellations of the toothed rod can also be
"open" or not bounded by sidewalls. Also, while the toothed rod is
typically described herein as comprising teeth, in yet other
embodiments, the rod can comprise a ladder conformation or the
like. In such ladder embodiments, the rod does not comprise teeth,
but rather has shaped openings (e.g., ladder-like) that can mate
with one or more tooth or other protuberances from the lever in the
TRLM. Also, while primarily shown in the accompanying figures as
square, it will be appreciated that in various embodiments, the
toothed rod can have a square, rectangular, triangular, round,
oval, or other shaped cross-sectional profile. Furthermore, in
various embodiments, the toothed rod can comprise teeth on more
than one surface, e.g., on opposing surfaces of a square rod, on
all surfaces of a square rod, on all surfaces of a triangular rod,
as encircling ridges on a round or oval rod, etc. The teeth on the
toothed rod can also be of any orientation, e.g., the teeth can be
slanted towards the jaws or towards the handle of the device, or
the teeth can be symmetrical (not slanted). Of course, in typical
embodiments, the teeth of the toothed rod are designed to mate with
teeth on the TRLM lever and are typically oriented to "grab" onto
and "hold" the teeth on the TRLM lever when the lever is engaged
(e.g., when the trigger of the device is activated). See below.
[0057] The toothed rod fits into an opening in the TRLM (e.g.,
opening, 1620) and traverses through the TRLM as can be seen in,
e.g., FIGS. 7, 16, etc. In typical operation of the devices of the
invention, the toothed rod can be controllably moved through such
opening, e.g., when the telescoping tube is expanded or
contracted.
[0058] The TRLM is held in place in the telescoping shaft by
placement or stabilizer rods, such as stabilizer rods 680. Such
stabilizer rods keep the TRLM in proper placement and orientation
without it having to be connected to the inside wall of the
proximal or distal shaft. Because of this "free floating" aspect of
the TRLM, the proximal end of the distal shaft can be inserted into
the distal end of the proximal shaft to varying amounts, thus
allowing the overall length of the shaft area to be adjusted. See,
e.g., FIGS. 12 and 13. In certain embodiments, the TRLM is placed
far enough distally in the telescoping tube such that it is present
in the "overlap" area, i.e., the area where the proximal end of the
distal tube is still within the distal end of the proximal tube
even when the telescoping tube is extended to its greatest
length.
[0059] The TRLM typically comprises a body shaped to fit within the
tubes of the telescoping tube region (e.g., shaped to fit within
the smaller of the two tubes) and comprises components to allow a
TRLM lever or similar component (which in turn is attached to a
cable that is operably attached to the linkage lever in the handle)
to connect with and disconnect with the toothed rod (which in turn
is operably connected to the actuator rod and jaws of the device).
Various embodiments of TRLMs are shown in, e.g., FIGS. 6, 14, 16,
etc. Cut away views of the TRLM are shown in, e.g., FIGS. 7, 10,
12, 13, etc., while internal pieces of a TRLM are shown in FIGS. 11
(in place within the tube but without the TRLM body) and 14. Thus,
in particular embodiments, the TRLM comprises a body (e.g., TRLM
body 640), which has a opening that traverses it through which the
toothed rod moves (e.g., opening 1620), openings for the stabilizer
rods to traverse through the body (e.g., openings 1630), one or
more flutings on the surface of the body which mate with the
flutings in the telescoping tube (e.g., in the proximal and/or
distal tube), an open space for the TRLM lever to fit within the
body of the TRLM where the lever can operably interact with the
toothed rod (opening 1610), a hole for the lever pivot pin (e.g.,
pin 1120) to be placed, an opening for the cable from the trigger
to enter the TRLM (e.g., opening 900), a TRLM lever (e.g., lever
1100) which is described in more detail below, and a lever spring
(e.g., 1110) which is also described in more detail below.
[0060] As stated, the TRLM lever can controllably interact with the
toothed rod that traverses through the TRLM. In particular
embodiments, the TRLM lever comprises one or more teeth that can
operably interact with the teeth of the toothed rod, thereby
holding the toothed rod in place when the teeth are engaged. As
mentioned above, the TRLM can also comprise lever spring 1110,
which acts to help disengage the TRLM lever (e.g., the teeth of the
lever) from the teeth of the toothed rod when the trigger of the
device is not being squeezed. In various embodiments the TRLM lever
can comprise one tooth, two teeth, three teeth, or four or more
teeth. It will be appreciated that in typical embodiments, the
shape of the part of the TRLM lever that interacts with the toothed
rod is configured to mate with the toothed rod. Thus, teeth on the
TRLM lever can be of corresponding shape, depth, angle, etc. as
teeth on the toothed rod so that they mate. See above. FIG. 16B
illustrates several aspects of an example TRLM lever of the
invention. TRLM lever 1100 is shown, as is opening 1650 where pivot
pin 1120 enters (Cf. opening 1600 in TRLM body in FIG. 16A),
opening 1640 where cable 660 passes through the lever, indentation
1660 where lever spring 1110 rests, and tooth ridges 1670 which
mate with troughs in toothed rod 590. FIG. 15 illustrates several
alternate embodiments of TRLM levers and toothed rods. FIG. 15B
shows two embodiments each having two TRLM levers that interact
with a toothed rod having a square cross-section and that has teeth
on at least two sides. In one such embodiment, one cable interacts
with both levers, while in the other embodiment, each lever has its
own cable. Correspondingly, the cables shown in FIG. 15B for the
embodiment with two cables, can both arise through bifurcation from
the same cable (i.e., a third cable) which in turn connects to the
linkage lever, etc., or each cable can be completely separate all
the way to the connection on the linkage lever. FIG. 15C shows a
cut away view of an embodiment comprising a circular lever (or
collaret) which encircles a toothed rod that has a circular cross
section and teeth all the way around the rod. It will be
appreciated that the lever springs in the embodiment in FIG. 15C
are orientated differently than those in, e.g., FIG. 15A, etc., but
serve the same purpose (e.g., to disengage the TRLM lever from the
toothed rod when the trigger is released). For purposes of clarity,
in the embodiments shown in FIGS. 15B and C, the TRLM body is not
shown. FIG. 15A illustrates the operation of the TRLM lever on the
toothed rod when pressure is applied on the attached cable. As
explained, when pressure is applied on cable 660 (because the
trigger is squeezed), the cable pulls on lever 1100 which pivots at
pin 1120 and engages it teeth into toothed rod 590.
[0061] As stated above, the TRLM is held in place in the lumen of
the telescoping tube by one or more stabilizer or holding rods.
FIG. 9 shows stabilizing rods 680 surrounded by rod springs 670. In
various embodiments, at their distal ends, the stabilizer rods
enter into openings in the TRLM, e.g., via openings 1630, and
freely traverse through the TRLM, while at their proximal ends they
can be connected to a proximal plate, e.g., proximal plate 810 as
in FIG. 18. In various embodiments, the rod springs can extend the
full length of the stabilizer rods from the proximal plate to the
TRLM, while in other embodiments, the rod springs can extend part
of such distance, e.g., from the TRLM to a stop ring such as stop
ring 910 in FIG. 9.
[0062] In typical usage of the devices herein, the TRLM is pulled
proximally when the trigger is pulled (because the trigger pulls
the cable which is attached to the TRLM). The distal end of the
cable can optionally be bulbous or can comprise some other feature
that keeps it within the TRLM. See, e.g., cable end 710 in FIGS.
13-15. When the TRLM is pulled proximally along the rods by the
cable, it the compresses rod springs. As explained further below,
when the trigger mechanism is released the cable is no longer
pulled, and the rod springs can then optionally act to push the
TRLM distally back to its position before the trigger was
activated.
[0063] FIG. 16A displays several perspectives of an example TRLM.
FIG. 16A shows TRLM body 640, along with opening 1610 where the
TRLM lever is located, opening 1600 where pivot pin 1120 fits,
openings 1630 (which it will be appreciated are present on both
ends of the TRLM body) where the stabilizer rods traverse through
the body, and opening 1620 where the toothed rod traverses the
body.
[0064] Also in the various embodiments of the invention, a cable
(e.g., cable 660) that is connected at its proximal end to the
bottom of the linkage lever (i.e., the free end of the linkage
lever closest to the handle base) and at its distal end to the TRLM
lever in the TRLM. In some embodiments, the cable can be, e.g., a
strap, an articulated strap, a wire, a woven wire, a braided wire,
a chain, or other similar cable-like member. In some embodiments,
the cable can comprise attachment loop 1400, or other similar
configurations to aid in its connection to the linkage lever. See
below.
[0065] Some embodiments can also comprise various plates within the
telescoping tube. For example, various embodiments of the invention
include a distal plate, e.g., distal plate 390, attached around the
toothed rod or around the proximal end of the actuator rod (see,
e.g., FIGS. 3, 6, etc.). In some embodiments, the distal plate is
placed around the proximal end of the actuator rod distal to the
connection of the actuator rod and the toothed rod (see, e.g., FIG.
5) while in other embodiments, the distal plate can be placed
around the toothed rod and can optionally comprise teeth or threads
to keep it secure around the toothed rod (see, e.g., FIGS. 9 and
10). The various embodiments can also comprise a proximal plate
(e.g., proximal plate 810) into which the stabilizer rods are
attached and through which the proximal end of the toothed rod can
optionally traverse (see, e.g., FIG. 18). As shown in FIG. 18,
proximal plate 810 can comprise openings 1810 to receive the
stabilizer rods and an opening 1800 through which the cable travels
from the handle into the telescoping tube region. Furthermore, some
embodiments can comprise a floating plate, e.g., floating plate 800
as in FIG. 8, which can help to guide the cable (e.g., cable 660)
going to the TRLM and/or help keep the stabilizer rods and the rod
springs properly orientated. Such floating plates can be placed
around the toothed rod between the TRLM and the handle region.
Various embodiments of the floating plate as shown in FIG. 18C can
comprise fluting 1830 (which typically mates with the fluting of
the tube, e.g., the smaller diameter tube), opening 1840 through
which the toothed rod is threaded, slot 1820 through with the cable
is placed and guided, and indentations 1850 through which the
stabilizer rods and their springs are guided.
[0066] The toothed rod, the stabilizer rods, the rod springs, the
floating plates, and the various components of the TRLM can be
constructed from any of a number of materials, e.g., metal (e.g.,
aluminum, anodized aluminum, steel, stainless steel, magnesium,
magnesium alloy(s), iron, metal alloys, and/or combinations
thereof), plastic (e.g., a polycarbonate, a polyvinyl, a
polyoxymethylene, Lexan, Delrin, etc.), a thermoplastic, a
thermoplastic rubber, a thermoplastic elastomer, etc., ceramic,
polymer, resin, wood, or any combinations thereof.
[0067] Tube locking mechanism 137 is shown as a threaded device in
the Figures herein. Of course, it will be appreciated that the tube
locking mechanism can alternatively comprise other formations to
stably hold two (or more) joined shafts, which formations will be
well known to those of skill in the art (e.g., common arrangements
such as for extendable tripods, etc.). In the Figures, tube locking
mechanism 137 is comprised of part 137a (attached to the distal
tube) and part 137b (attached to the proximal tube). As can be seen
in FIG. 17, flanges 1710 are separated by slits 1700 on tube
locking mechanism part 137b. When, part 137a is threaded onto part
137b, it can optionally pinch the flanges closer together to
therefore tightly grip onto the telescoping tubes.
[0068] In certain embodiments, the inner surface of the proximal
end of the jaw base assembly (see, e.g., FIG. 5) can comprise one
or more ridges, knobs, dots, or other similar raised protuberances
that rest within (or beside) the flute(s) in the shaft(s). For
example, ridges 570 can be seen in FIG. 5. Such ridges, etc. can
act to stabilize the head region in a particular orientation in
relation to the shaft. Furthermore, certain embodiments can
comprise multiple ridges in the jaw base assembly mated with
multiple flutes within the shaft, while some embodiments can
comprise a greater number of flutes than of ridges. In certain
embodiments, the jaw base assembly and the shaft are not
permanently affixed (e.g., they are not welded, glued together,
etc.), but rather they are held together by, e.g., the presence and
connections of the internal mechanism (e.g., the jaw actuator, jaw
actuator rod, toothed rod, etc.), the friction between the tube and
the jaw base assembly, etc. Thus, in some embodiments, the internal
connections through the shaft region allow play in length. Thus,
the head region can be pulled slightly out (e.g., away from the
distal end of the distal shaft) so that the ridge(s) within the
flute(s) stabilizing the head region are removed from the flute(s).
Thus, the head region can then be rotated and then moved back
towards the shaft so that the ridge(s) re-enter different flute(s)
and stabilize the rotated head region in a new and different
orientation in relation to the shaft/handle. It will be appreciated
that some embodiments comprise a plurality of flutes and ridges
thus allowing a fine degree of control over head rotation. In some
such embodiments, the actuator rod interacts with the jaw actuator
cap such that they do not prohibit rotation of the head region
(e.g., the activator cap freely circles around the jaw actuator
rod, etc.).
[0069] In some embodiments, the user is unable to completely remove
distal tube 135 from proximal tube 136. While the head of the
device can optionally be pulled distally far enough to rotate,
typically neither the head region nor tube 135 are completely
removable once assembled. Wingnuts or flanged components, e.g.,
flanges on the proximal end of the toothed rod, or pins on the
proximal end of the toothed rod, can optionally keep the toothed
rod (and thus the head region and/or distal tube) from complete
removal. Such optional flanging, etc. can block such removal by
interaction with the TRLM, etc.
[0070] Again, within the telescoping tube, the toothed rod is
attached at its distal end to the jaw actuator rod. Such attachment
can be by hook arrangement or by pins, crimping, clipping, welding,
adhesive/glue, or any other appropriate method. See, e.g., FIG. 8.
In some embodiments, the toothed rod and the jaw actuator rod can
be connected through one or more intermediary(ies) (e.g., another
cable, etc.) At its proximal end, the toothed rod traverses the
TRLM and can be attached to a cable at variable places along its
length indirectly via the TRLM lever, etc. See below. The cable,
which traverses the proximal tube enters the handle of the device
and interacts with the lever linkage. See below. As stated, in
various embodiments, the components within the tube/shaft, e.g.
cable, TRLM, toothed rod, etc., comprise stainless steel, while in
other embodiments they comprise a metal (aluminum, anodized
aluminum, steel, magnesium, magnesium alloy(s), iron, or various
alloys), plastics (e.g., polyoxymethylene, Delrin, Lexan),
polycarbonates, nylon, and/or combinations thereof.
Head Region
[0071] As mentioned above, typical aspects and components of the
head region, are applicable to a number of various embodiments of
adjustable length devices of the invention. Thus, for example,
aspects of different embodiments of head regions can optionally be
paired with different embodiments of handle regions (e.g., a handle
region comprising a locking mechanism or a handle region not
comprising a locking mechanism). Relation of the head region with
the other regions of example embodiments can be seen in, e.g.,
FIGS. 1 and 2, while various components of the head region can be
seen in, e.g., FIGS. 3, 4 (showing an exploded view), and 5
(showing a cut away view).
[0072] At the distal end of the device (i.e., the end furthest from
the handle region and typically the region furthest from the user
when held by the handle) grasping jaw members, e.g., jaws 120, of
the device oppose one another and form a modified "U" shape when
open (e.g., when an object is not being grasped) and form a
five-sided or pentagonal shape when closed (e.g., when an object is
being grasped or when the jaw members are brought together without
grasping an object). As explained more fully below, such shape can
aid in grasping a wide range of differently sized objects.
Additionally, the jaw shape and arrangement of the jaws (as well as
the surface layers, pads, etc.) add aesthetic interest to the
device (e.g., through shape and optionally through colors and/or
textures of the various components, contrast in color/texture
between various areas, etc.). The outer surfaces of the jaw members
can optionally be ridged or braced with one or more ribs or the
like, e.g., in order to strengthen the members. See, e.g., FIG. 1.
In certain embodiments, the jaw members are constructed all of one
piece. The jaw members can also comprise an overmolded inner layer,
or inner surface layer. See below. In certain embodiments, the
distal end of each jaw member comprises end region or tip 111,
which optionally can be attached to the main body of the jaw member
via flexible hinge 110. In other embodiments, the tip is attached
or connected to the main body of the jaw member via a nonflexible
region, i.e., such embodiments do not comprise a flexible hinge at
the region where the tip and the main jaw body intersect.
[0073] In certain embodiments, the inner surfaces of the jaw
members can comprise inner surface layer 115, e.g., to aid in
gripping of objects. The texture of the inner surface layer can be
dimpled, roughened, ridged, striated, can comprise bumps or raised
dots, or can comprise any other three-dimensional surface texture.
In certain embodiments, the inner surface layer comprises a
flexible or malleable/conformable surface. Thus, the inner surface
layer can also conform at least partially to an object being
grasped and thereby help prevent slippage, etc. whether or not the
surfaces are "textured." The inner surface layers can be composed
of material having a high coefficient of friction to aid in
gripping of objects. Additionally, the inner surface layers can
comprise one or more coatings to aid in gripping of objects. Such
coatings can also comprise those having high coefficients of
friction or the like.
[0074] In certain embodiments, the jaw members optionally do not
comprise an inner surface layer. In other words, in such
embodiments, the inner surfaces of the jaw members themselves grasp
objects and the inner surfaces of the jaw members can be textured
(e.g., dimpled, etc.) and/or coated. Thus, in such embodiments, the
jaw members can be textured on their inner surfaces rather than
being mated with (e.g., through overmolding or adhesion) another
inner surface layer of textured material, etc.
[0075] When the jaw members are fully closed (e.g., when an object
is being grasped or when the device is closed without grasping an
object), pad areas 105, can meet one another over substantially
their entire surfaces. In some embodiments, the pad areas can
optionally meet/touch one another at their distal ends (e.g., when
the jaws are brought together lightly or partially) and over
substantially their entire areas when the jaws are brought together
completely or more fully. It will be appreciated that the tips and
pads of the jaw members allow grasping of quite small objects and
that the tips and/or the pads can optionally flex and/or conform at
least partially to the shape of objects being grasped. In certain
embodiments, the pad area is continuous with, and/or part of, the
inner surface layer of the jaw member and can be composed of the
same material. In certain embodiments, such material (i.e., which
composes the pad and/or the inner surface layer of the jaw member)
can be overmolded onto the jaw members, thus forming one solid
piece for each jaw member.
[0076] As stated, in certain embodiments, the inner surfaces of the
jaw members and/or the pads can comprise one or more overmolded
pieces of material that comprise the inner surface layer. In other
embodiments, the inner surface layers of the jaw members and/or the
pads can comprise a material (e.g., comprising an inner surface
layer, e.g., a textured surface), which is attached (e.g., via
glue/adhesive or via studs/brackets/pins/etc.) to the jaw member
rather than overmolded.
[0077] The jaw members can optionally be constructed from a number
of materials. In certain embodiments, the jaw members comprise
Lexan.RTM. (available from General Electric, Fairfield, Conn.),
while in other embodiments, the jaw members can comprise a
polyoxymethylene such as Delrin.RTM. (available from E.I. du Pont
de Nemours and Company, Wilmington, Del.). In certain embodiments,
the jaw members can comprise metal (e.g., aluminum, anodized
aluminum, steel, stainless steel, magnesium, magnesium alloy(s),
iron, metal alloys, and/or combinations thereof), plastic (e.g., a
polycarbonate, a polyvinyl, a polyoxymethylene), a thermoplastic, a
thermoplastic rubber, a thermoplastic elastomer, etc., ceramic,
polymer, resin, wood, or any combinations thereof. In various
embodiments, the inner surface layers of the jaw members, and/or
the pads, can comprise the same material as the jaw members or they
can comprise a different material than the main body of the jaw
members. In particular embodiments, the inner surface layers can
comprise one or more of: a thermoplastic rubber (TPR), a
thermoplastic elastomer (TPE), a silicon rubber, or a rubber. The
composition of the inner surface layers and/or the pads is
optionally chosen for one or more characteristic such as
durability, gripping ability (e.g., a "no-slip" surface), aesthetic
interest, etc. In certain embodiments, the inner surface layer
and/or pads are textured and/or colored (optionally the same as
other parts of the device such as the trigger, palm area on the
back of the handle, etc. (e.g., to add additional aesthetic
interest). In some embodiments the inner surface layers and/or the
pads comprise Lexan, Delrin, metal (e.g., aluminum, anodized
aluminum, steel, stainless steel, magnesium, magnesium alloy(s),
iron, metal alloy(s), and/or combinations thereof), plastic (e.g.,
a polycarbonate, a polyvinyl, a polyoxymethylene), a thermoplastic,
a thermoplastic elastomer, a thermoplastic rubber, etc., ceramic,
polymer, resin, wood, or any combinations thereof. In some
embodiments, the main body of the jaw members comprises
polyoxymethylene, Lexan, or Delrin while the inner surface layers
and the pads comprise TPR or TPE.
[0078] In certain embodiments, the jaws can open to a maximum
distance of at least 6 inches or more from tip to tip (e.g., from
tip of pad to tip of pad), to at least 5.5 inches or more from tip
to tip, to at least 5 inches or more from tip to tip, to at least 4
inches or more from tip to tip, to at least 3 inches or more from
tip to tip, to at least 2 inches or more from tip to tip, or to at
least 1 inch or more from tip to tip.
[0079] As can be seen in FIG. 3, proximal ends 305 of the jaw
members (i.e., the ends of the jaw members closest to the handle)
overlap one another within jaw actuator (or clevis), 350. The
proximal ends of the jaw members enter through side openings 315 in
the jaw actuator. The jaw actuator keeps the proximal ends of the
jaw members secure and in the correct orientation. The jaw members
rotate around pivot points 300 (in the jaw members) which
optionally correspond with pivot points 125 (in the jaw assembly)
where bolts, screws, or other fasteners (such as pin 410 and cap
400) secure and/or position the pivoting jaw members to the jaw
base assembly. See FIG. 4.
[0080] The jaw actuator and the proximal ends of the jaw members
are enclosed within jaw base assembly 130. The jaw base assembly
comprises two opposing sides 133 (shown as roughly triangular in
the attached figures), separated by enclosing sidewall(s) 132. In
certain embodiments, the jaw base assembly is molded or fashioned
out of one piece of material and is not constructed from smaller
pieces. In some embodiments, the jaw base assembly can be composed
of separate top, bottom, and sidepieces which are secured together
(e.g., via glue, adhesive, fasteners, melting, welding, spot
welding, etc.). Of course, it will be appreciated that such
triangular shape should not necessarily be taken as limiting on the
invention and that the jaw base assembly can also comprise
different shapes (e.g., circular, square, oval, etc.) and does not
necessarily have to have vertical side walls, etc.
[0081] The jaw actuator holding the proximal ends of the jaw
members is attached, via jaw actuator cap 370 to jaw actuator rod
351 which, in turn, is surrounded by jaw actuator spring 360. Both
the spring (e.g., a compression spring) and the rod are housed
within the interior of the jaw base assembly. However, in some
embodiments, the proximal end of the jaw actuator rod and/or the
jaw actuator spring can extend into the hollow tube region of the
device. See below. Also, it will be appreciated that in some
embodiments, the jaw actuator cap does not comprise a separate
piece, but is rather a continuation of the jaw actuator. Also, in
some embodiments, the distal end of the actuator rod (e.g., end
450) is a separate piece, while in other embodiments, it is merely
an enlarged end of the actuator rod. The distal end of the spring
pushes against the jaw actuator (e.g., by pushing against the jaw
actuator cap), while the proximal end of the spring pushes against
stop plate 500, or other similar plate, within the jaw base
assembly. See FIG. 5. Because the spring pushes against both the
jaw actuator and the stop plate, it forces the jaw members apart
(i.e., away from one another) when the device is not being
triggered (i.e., when the trigger is not squeezed and/or latched).
See below.
[0082] While, as shown by the dashed motion lines in FIG. 1, the
jaw members can move towards or away from one another, it will
additionally be appreciated that in certain embodiments, the entire
head region of the device can be rotated or pivoted around the
elongated tube. See below. Such action can allow proper orientation
of the jaws to grasp specific objects. Cf. FIG. 1 and FIG. 2.
[0083] In various embodiments, one or more of the jaw actuator, jaw
base assembly, jaw actuator cap, jaw actuator rod, and spring can
be composed of, e.g., metal (such as aluminum, anodized aluminum,
steel, stainless steel, magnesium, magnesium alloy(s), iron, metal
alloy(s), and/or combinations thereof), plastic (e.g., a
polycarbonate, a polyvinyl, a thermoplastic, a thermoplastic
elastomer, a thermoplastic rubber, a polyoxymethylene, Lexan,
Delrin, etc.), ceramic, polymer, resin, wood, or any combinations
thereof. In certain embodiments, the jaw actuator, jaw base
assembly, jaw actuator cap, and jaw actuator rod are comprised of
plastic(s) (e.g., polyoxymethylene, Lexan and/or Delrin), while the
spring is comprised of a metal (e.g., stainless steel, aluminum,
anodized aluminum, iron, magnesium, magnesium alloy(s), steel,
metal alloy(s), and/or combinations thereof). In some embodiments,
the jaw actuator, jaw actuator cap, jaw actuator rod, and spring
are comprised of metal (such as aluminum, anodized aluminum, steel,
stainless steel, magnesium, magnesium alloy(s), iron, metal
alloy(s), and/or combinations thereof) while the jaw base assembly
is comprised of plastic (e.g., polyoxymethylene, Lexan and/or
Delrin).
[0084] As explained in more detail above, the jaw actuator rod 351
is attached to toothed rod 590 which traverses through adjustable
length tube regions 135 and 136 and is operably and controllably
attached to cable (or in some embodiments, rod, strap, articulated
strap, wire, chain, or other similar cable-like element) 660 via
the TRLM. See above.
Handle Region
[0085] As can be seen in the accompanying figures, the handle
region (region C in FIG. 1) comprises a number of features and a
number of different embodiments (e.g., devices with or without a
locking mechanism to hold the jaws in place even when the trigger
grip is not squeezed). The handle itself comprises a form designed
to be grasped by the hand of a user. In certain embodiments, handle
body 145 is comprised from a single piece of material, with handle
cap 155 and trigger grip (or "trigger") 150, being attached to the
single body of the handle. When present, optional latch lever 140
can also be comprised from a separate piece of material. Such
single piece construction of the handle body can aid in strength
and stability of the device. However, in other embodiments, the
handle body can be constructed from a number of pieces, e.g., two
mirrored pieces which are fitted together and to which are attached
the handle cap, optional latch lever, and trigger grip, etc. In
some embodiments, the handle comprises a hook or ring feature to
allow the device to be hung or to have a cord/lanyard attached to
the device (e.g., to allow the device to be hung). Thus, optional
ring 165 is shown in the figures. FIGS. 1, 2 and 8 show the spatial
relationship between the handle region and the other regions of the
device, while Figures such as 19-24 show various example components
of different embodiments of handle regions (e.g., embodiments
comprising latching mechanisms in FIGS. 22-24 and embodiments that
do not comprise latching mechanisms in FIGS. 20 and 21).
[0086] Trigger grip 150, (also referred to as trigger 150) in
certain embodiments, comprises two mirrored pieces which are joined
together (e.g., by adhesives, temperature setting or melting,
friction forces, etc.) or are placed adjacent to one another, but
not joined. Other embodiments can comprise a trigger grip which is
comprised of a single formed piece. In either case, such trigger
grip is typically ergonomically shaped to allow for easy finger
placement for the user and for aesthetic style. Thus, as can be
seen from the figures, the trigger grip can comprise raised ridges
and depressions for finger placement. It will also be appreciated
that the sides of the handle body (alternatively and/or in addition
to the trigger) can comprise ridges and other shapes to produce an
ergonomic grip. The trigger grip attaches to the handle body at a
pivot point (e.g., pivot point 2111). See, e.g., FIGS. 20, 21, and
22.
[0087] In some embodiments (e.g., those comprising a latching
mechanism), pivot point 2111 exists where the trigger is attached
to the handle body. At such point, a pin (e.g., pin 2103 and its
corresponding pin cap(s) 2104) can be threaded through openings in
the trigger grip pivot areas (e.g., pivot areas 2208) to which the
locking latches (e.g., latches 140) are attached. See, e.g., FIGS.
22 and 23. In other embodiments, e.g., those that do not comprise a
jaw latching mechanism, a pin (e.g., pin 2103 and its corresponding
pin cap(s) 2104) can also be used to pivot the trigger grip pivot
areas around at pivot point 2111. See, e.g., FIGS. 20 and 21. In
the various embodiments, when the trigger grip pivots from the
pivot point, the base of the trigger grip slides into the body of
the handle when the trigger is squeezed by a user. As will be
appreciated, the interaction of the handle and the trigger
typically does not present sharp edges or openings where a user's
fingers could be pinched or injured. As explained further below,
when the trigger grip is squeezed and moves into the handle body,
the linkage lever and the optional latching lever are moved as
well.
[0088] Also attached to the handle body is an optional latching
lever (e.g., lever 140). As mentioned, in embodiments where it is
present, the latching lever(s) are attached to a pin that threads
through openings in the trigger grip pivot areas (e.g., areas 2208)
and the handle body at pivot point 2111. The latching lever(s) are
placed on one or both ends of the shaft (i.e., on either one or
both sides of the handle body). See FIG. 23.
[0089] The handle cap is attached at the base of the handle body.
The cap (e.g., cap 155) is secured to the base via a screw (e.g.,
screw 2000), or similar fastener in various embodiments. However,
in other embodiments, the cap is attached to the handle body by
adhesives, temperature setting, friction forces, etc. and
optionally does not comprise a screw or the like. In embodiments
comprising a latching mechanism, the handle cap optionally
comprises a latch recess area (e.g., area 2410) into which the
optional latch fits when the device jaws are locked. See below.
[0090] In various embodiments, the handle body, handle cap, trigger
grip, and optional lever latch are comprised of or comprise, e.g.,
metal (e.g., aluminum, anodized aluminum, steel, stainless steel,
magnesium, magnesium alloy(s), iron, metal alloy(s)), plastic
(e.g., a polycarbonate, a polyvinyl, a thermoplastic, a
thermoplastic elastomer, a thermoplastic rubber, a
polyoxymethylene, Lexan, Delrin, etc.), ceramic, polymer, resin, or
any combinations thereof. In certain embodiments the handle body,
handle cap, trigger grip, and optional lever latch are comprised of
polyoxymethylene, Lexan, and/or Delrin. In yet other embodiments,
the handle body, handle cap, trigger grip, and optional lever latch
are comprised of a polyoxymethylene, Lexan and/or Delrin while palm
rest area 160 (and optionally the trigger grip) also comprises an
overmolded layer of thermoplastic rubber or thermoplastic elastomer
for improved gripping, comfort, and/or aesthetics. In yet other
embodiments, the palm rest on the back of the handle (and
optionally the trigger grip) comprises a thermoplastic rubber or a
thermoplastic elastomer.
[0091] As can be seen in the figures, the cable (e.g., cable 660)
and the linkage lever (which comprises upper linkage 2201 and lower
linkage 2203, which collectively comprise the leverage action
mechanism) are also comprised within the handle body. As stated
previously, the cable is attached within the telescoping tube at
its distal end to the TRLM and the TRLM lever. In the various
embodiments, the proximal end of the cable enters the handle body,
rests upon a roller or pin, traverses the length of the interior of
the handle, and attaches to the free end of the lower linkage lever
at an attachment point (e.g., point 2180). The end of the cable can
be attached to the free end of the linkage lever via pin 2100,
etc.
[0092] In particular embodiments comprising a locking/latching
mechanism (see, e.g., FIGS. 23 and 24), the proximal end of the
cable enters the handle body, rests upon a roller (e.g., roller
2335) which optionally encircles a pin (e.g., pin 2103) and which
is between 2 wings or walls of a latching disc (e.g., latching disc
2375), traverses the length of the interior of the handle and
attaches to the free end of the lower linkage lever (e.g., at point
2180). In some such embodiments, the cable can rest directly upon
the pin (e.g., pin 2103) rather than upon a roller such as roller
2335. As can be seen from FIGS. 23 and 24, the cable can be kept in
place on the roller (or pin) by sidewalls or wings of the latching
disc (e.g., disc 2375). FIG. 24 shows a transverse cut away view of
the area. In various embodiments, the roller on which the cable
rests can be a separate piece from the latching disc or can be part
of the latching disc. The latching disc is typically sandwiched
between the trigger grip pivot areas (e.g., areas 2208). See FIGS.
22 and 23.
[0093] In particular embodiments that do not comprise a
locking/latching mechanism (see, e.g., FIG. 21), the proximal end
of the cable enters the handle body, rests upon a roller (e.g.,
roller 2105) which encircles a pin (e.g., pin 2103). The roller can
comprise two wings (see FIG. 21) which help to keep the cable in
place. In other such embodiments, however, the cable can merely
rest upon the pin and be kept in place by the trigger grip pivot
areas (e.g., areas 2208). The cable traverses the length of the
interior of the handle, and attaches to the free end of the lower
linkage lever at an attachment point (e.g., point 2180). The end of
the cable can be attached to the free end of the linkage lever via
pin 2100, etc.
[0094] In the various embodiments herein (both with or without
latching mechanisms), the linkage lever is moveably hinged at the
top (e.g., 2202) and middle (e.g., 2205), while free at the end
(e.g., 2204) nearest the handle cap. In certain embodiments, pin
2101 and pin caps 2102 can fasten the top of the linkage lever.
See, e.g., FIG. 21. In certain embodiments, the free end of the
linkage lever moves within a track or groove within the handle body
or within the free space present within the handle body. Thus, the
lever is movable when the trigger grip is squeezed. When the grip
is squeezed, pressure is applied by the grip upon the lever, which
is pushed backwards and stretches out (e.g., free end 2204 moves
towards the handle cap at the base of the handle body), thus,
pulling the attached cable (hence the trigger is a leverage action
trigger). In certain embodiments (including embodiments either with
or without latching mechanisms), the joint between the upper and
lower linkages slides along a slope (e.g., slope 2440) on the inner
wall of the trigger, thereby producing a smooth action of pulling
on the cable. FIGS. 21, 23, etc. show cut away views of embodiments
wherein the lower linkage lever comprises two mated, mirrored
parts, through which the cable (cable 660) traverses. The various
embodiments can also comprise a upper linkage lever that optionally
comprises a single piece having a slot or opening through which the
cable traverses or can comprises two mated mirrored parts. In other
embodiments, the linkage lever can comprise, e.g., 2 single pieces
(rather than the doubled pieces shown in the current figures) that
are hinged and have the cable attached to the lower end, etc. FIGS.
19, 21, and 22 give various views/embodiments of the linkage lever
in handle region of example adjustable length devices of the
invention.
[0095] Also within the handle body is the optional latching
mechanism. The latching mechanism comprises latching lever 140, pin
2103 (which is also present in the non-latching embodiments),
latching disc 2375, roller 2335, latching cable 2209, latch spring
2206, latch 2207, latch stop plate 2400, and latch recess area 2410
(actually created by recess within the handle cap, but used in
latching action). As mentioned previously, the latch lever(s) (or
latching levers) are present on the exterior of the handle body.
Latch lever(s) 140, either on one or both sides of the body, can be
positioned "off" or "on" by the user either before, during, or
after the trigger grip is squeezed (e.g., to grasp an object). In
certain embodiments, the latch lever can be locked "on" and/or
"off." In other words, the latch lever when locked "on" will allow
the latch to function when the trigger is squeezed beyond a certain
point. See below. When the latch lever is "off" the latch will not
function even when the trigger is squeezed beyond the required
distance. See below. In certain embodiments, the locking of the
latch occurs by turning or pushing latching lever 140 past a
designated point. In some embodiments, the body of the handle
comprises a ridge, bump, or other protuberance (optionally
comprised of the same material as the handle body) positioned
within the motion range of lever 140. Thus, in some embodiments,
when the lever is pushed up, it will be forced above the ridge by
the action of the user. In such instances, the lever will catch on
the ridge which will prevent the lever from moving back downwards.
Thus, in such example, the lever will be in an "off" position and
therefore the latching mechanism will not be able to be
engaged.
[0096] At the bottom end of latch 2207 certain embodiments comprise
a beveled or sloped edge. Such bevel/slope edge is on the side of
the latch facing towards handle cap 155, and allows for the latch
to move more easily up and over the handle cap when the trigger is
squeezed. Certain elements of the handle cap also comprise a
corresponding bevel/slope area 2200 as well.
[0097] In various embodiments, the optional latch spring, latch
cable, and cable comprise one or more metal (e.g., aluminum,
anodized aluminum, steel, stainless steel, magnesium, magnesium
alloy(s), iron, or various alloys and/or combinations thereof). In
some embodiments, the latch spring, latch cable, and cable comprise
stainless steel. In various embodiments, the latch lever, latch,
pin (also referred to as latching or latch lever shaft), latch stop
plate, and latching disc comprise metal (e.g., aluminum, anodized
aluminum, steel, stainless steel, magnesium, magnesium alloy(s),
iron, or various alloys and/or combinations thereof), plastic
(e.g., a polycarbonate, a polyvinyl, a polyoxymethylene, a
thermoplastic, a thermoplastic rubber, a thermoplastic elastomer,
etc.), ceramic, polymer, resin, wood, or any combinations thereof.
In certain embodiments, the latch lever, latch, pin, latch stop
plate, and latching disc comprise a polyoxymethylene, Lexan, and/or
Delrin and the latch spring, (and optionally latch cable) comprise
stainless steel. In some embodiments, the latch cable and/or the
cable comprise nylon. In some embodiments, the latch cable and/or
the cable comprises an articulated strap, strap, wire, woven wire,
braided wire, chain, or other similar cable-like element
Exemplary Operation
[0098] The devices of the invention are capable of use in a number
of ways and for a number of methods. Thus, description of specific
uses herein should not necessarily be taken as limiting. In certain
embodiments, the device is held, via the handle within a user's
hand, with the user's fingers wrapped around trigger 150, and the
user's palm against the back of the handle at palm rest 160. Again,
as mentioned above, areas where a user holds the device can
comprise material to help prevent slippage (a problem of special
concern with users who are elderly or who have poor gripping
ability) and/or to present a decorative aspect (e.g., a contrasting
color and/or texture). Thus, the palm rest at the back of the
handle can comprise, e.g., an overmolded layer of rubber,
thermoplastic rubber, thermoplastic elastomer, or the like. In some
embodiments, the trigger can also comprise, thermoplastic elastomer
and/or thermoplastic rubber (e.g., as an overmolded layer on, e.g.,
polyoxymethylene, Lexan, Delrin, etc.). Some embodiments shown in
the figures comprise a stippled appearance in regions that are
optionally colored in various devices. See, e.g., FIGS. 22 and 24.
Of course, it will be appreciated that different embodiments can
comprise different colors/textures/patterns/etc. in different areas
of the devices in the different embodiments. Such colors, etc., can
add to the aesthetically pleasing shape of the devices. In
additional embodiments, the device can further comprise a forearm
brace running from the handle back along the user's forearm to help
support the device. Such braces are especially useful for users
having poor wrist strength. Also as mentioned above, the entire
head of the device (i.e., region A in FIG. 1) can be rotated in
various embodiments in order to produce the proper angle for
grasping. See above.
[0099] As explained throughout, the length of the hollow tube/shaft
of the device is adjustable. Thus, in use, the user will determine
the proper or desired length of the device, unlock or loosen the
tube locking mechanism (e.g., tube locking mechanism 137, e.g., by
unscrewing it), pull or push the two pieces of the tube/shaft
(e.g., tubes 135 and 136) together or away, and refasten the tube
locking mechanism. Such adjustment of the two pieces of the
tube/shaft also positions the toothed rod (e.g., toothed rod 590) a
greater or lesser distance through the TRLM (e.g., TRLM 640).
[0100] Once the head is properly angled, the length is properly
adjusted, and the device is properly held, the user typically
squeezes trigger 150 in order to grasp an object. Squeezing the
trigger pushes the linkage lever (e.g., linkage lever 2201/2203)
back and down within the handle (optionally tracking along a slope
such as slope 2440). The downward movement of the linkage lever
pulls a cable (e.g., cable 660) which is attached to the free end
of the lower linkage lever, e.g., point 2180, along with it. The
cable, in turn, traverses the handle by going over a roller (e.g.,
roller 2335 or 2105) and pulls on the TRLM (e.g., TRLM 640) by
pulling on a lever within the TRLM (e.g., lever 1100). The lever,
in turn pivots and compresses a lever spring such as spring 1110.
The lever thus engages its one or more teeth with a toothed rod
(e.g., toothed rod 590) thereby operably connecting the cable/TRLM
with the toothed rod. The toothed rod, in turn, pulls on a jaw
actuator rod (e.g., actuator rod 351). The jaw actuator rod pulls
on the jaw actuator (e.g., 350) by pulling on the jaw actuator cap
(e.g., 370) and thus pulls the proximal ends (e.g., ends 305) of
the jaw members (e.g., jaws 120) back into the jaw base assembly
while the distal ends of the jaw members and jaw pads, pivot and
are pulled towards one another.
[0101] When the trigger is released (assuming that the jaws have
not been locked through use of the optional latching feature) the
trigger no longer pushes the linkage lever down into the handle.
Thus, there no longer is a force pulling on the cable so the TRLM
lever spring is able to disengage the TRLM lever from the toothed
rod. Because the toothed rod is therefore free, the jaw actuator
spring is able to push the proximal ends of the jaw members
distally which pivots the jaw members back open.
[0102] It will be appreciated that a wide range of different sized
and/or different shaped objects can be grasped by the device. Small
objects can optionally be grasped between the jaw pads on the end
of the jaw members while larger objects can be grasped between the
pads or in the larger area between the jaw members. As seen in the
figures, the jaw members are angled so that they encompass a wide
opening between them. In some instances when an object to be
grasped is large enough to require the jaw members to be fully
opened, the trigger can still be pulled back (e.g., far enough to
allow latching in those embodiments comprising a latching
mechanism, see below) and pressure applied to grip the object. In
such instances, some embodiments of the device can optionally allow
trigger movement and applied pressure even without movement of the
jaw members (e.g., when the jaws are held to their greatest
extension around a large object), e.g., by play amongst the various
cable/rod components, and/or by compression of the rod springs and
proximal movement of the cable and TRLM, etc.
[0103] As will be appreciated, in various embodiments, the jaw
members can be moved (e.g., closed) over a greater distance than
the distance that the trigger is moved. Such embodiments allow for
use of the device to grasp a wider range of objects than would
otherwise be possible. In some embodiments, the trigger can be
moved, e.g., .about.1.5 inches while the tips of the jaw members
close, e.g., .about.5, .about.5.5, or .about.6 inches (e.g., the
distance between them). In certain embodiments, such ratio between
the distance the trigger is squeezed (moved) and the distance the
tips of the jaws move can comprise about 1.5:5, 1.5:5.5, 1.5:6,
1.5:6.5, 1:5, 1:5.5, 1:6, 1:6.5, 0.5:5, 0.5:5.5, 0.5:6, 0.5:6.5,
etc. In various embodiments, the tips of the jaw members move a
greater distance than the distance moved by the trigger.
[0104] An optional feature in some embodiments of the device
comprises a latching or locking system (a latching mechanism) which
allows the jaw members to be fixed in place (e.g., while grasping
an object). This feature can be especially important for users who
cannot maintain a constant grip pressure, thus allowing them to
grasp an object, lock the jaw members, and not have to keep
applying constant pressure on the trigger. In some such
embodiments, the locking action can engage no matter the placement
of the jaw members (e.g., jaws fully opened, jaws partially opened,
jaws fully closed, etc.). To engage or disengage the latching
mechanism, which can be done before, during, or after grasping of
an object, the user moves latching lever 140. As stated previously,
in various embodiments, the lever can be present on both sides of
the handle body (see FIG. 23) or the lever can be present on only
one side of the handle body. To disengage the latch mechanism, in
typical embodiments, the latch lever is pushed upwards by the user
(e.g., by the user's thumb). Within the range of motion of the
latch lever, various embodiments comprise a ridge, bump, or other
protuberance on the handle body, which can be part of the handle
body. See ridge 190 in FIG. 1. In certain embodiments, the lever is
flush or substantially flush with the body of the handle so when it
is pushed upwards, it is moved up and over the ridge by force from
the user. Additionally, and/or alternatively, the latch lever can
comprise a ball bearing or opposing ridge on its side facing the
body of the handle, which ball bearing, ridge, or similar
protuberance on the latch lever interacts with the ridge or
protuberance on the handle body. Once the latching lever is above
the ridge it tends to stay there until moved downwards by the user.
Movement of the latch lever upwards, rotates the pin that the
latching levers are operably attached to (e.g., pin 2103) and the
latch disc (e.g., 2375) and optionally the roller (e.g., roller
2335 when present). Such rotation pulls on the latch cable (or
strap, etc.) 2209 which pulls latch 2207 upwards. If the latch is
pulled upwards, then even when the trigger is squeezed and moves
into the body of the handle, the latch will not be able to extend
downwards into recess area 2410 in order to latch the jaws.
[0105] In uses when the user desires to engage the locking
mechanism, latching lever 140 is not pushed upwards (or is pushed
downwards below the ridge/protuberance if it the latching lever is
above such). Thus, when the trigger is squeezed and moves back into
the body of the handle, latch 2207 (which can be sloped/beveled on
the bottom) moves up and into the body of the handle over area
2200. When the trigger is squeezed far enough back, the latch is
pushed down into recess 2410 by action of latch spring 2206. The
latch spring pushes against latch plate 2400 and the top of the
latch. When the latch is moved in position above the latch recess,
the latch spring (e.g., a compression spring) pushes the latch into
the recess where it catches on the interior of the handle cap and
thus "locks" the trigger in place. Since the trigger is locked in
place, it therefore causes the linkage lever to be locked in place,
which in turn causes the cable and toothed strap to be locked in
place, which causes the jaw members to be locked in place. To
release the lock, users can move the latching lever upwards. See
above.
[0106] As stated previously, the locking mechanism can be engaged
(when it is switched "on") no matter the size of the object being
grasped. For example, if a small object is to be grasped between
the tips/pads of the jaw members or if a large object is to be
grasped between the main bodies of the jaw members so that the jaws
are at their widest, the jaws can still be latched. In either
instance, the trigger is squeezed until the object is grasped. In
some embodiments, the amount of trigger squeezing necessary just to
grasp the object can be enough to push the trigger, and hence the
latch, back far enough into the handle so that the latch is capable
of engaging and locking the trigger (if the latch is "on").
However, the current invention also optionally provides that once
an object is grasped (and, thus, the jaws held a certain distance
apart), the user can still squeeze the trigger far enough into the
handle to engage the latch no matter the size of the object held.
This is optionally because of play within the various connected
components in various embodiments, or by compression of the rod
springs and proximal movement of the cable, etc. Such
expansion/stretch, thus, allows the cable and toothed strap, etc.,
to move proximally and the trigger to be moved far enough into the
handle so that the latch is engaged (when it is "on") no matter the
size of the object being held.
[0107] While the foregoing invention has been described in some
detail for purposes of clarity and understanding, it will be clear
to one skilled in the art from a reading of this disclosure that
various changes in form and detail can be made without departing
from the true scope of the invention. For example, all the
techniques and apparatus described above may be used in various
combinations. All publications, patents, patent applications, or
other documents cited in this application are incorporated by
reference in their entirety for all purposes to the same extent as
if each individual publication, patent, patent application, or
other document were individually indicated to be incorporated by
reference for all purposes
* * * * *