U.S. patent application number 12/164552 was filed with the patent office on 2009-12-31 for electric spinning toy.
Invention is credited to Ofer ZILBERBERG.
Application Number | 20090325457 12/164552 |
Document ID | / |
Family ID | 41448011 |
Filed Date | 2009-12-31 |
United States Patent
Application |
20090325457 |
Kind Code |
A1 |
ZILBERBERG; Ofer |
December 31, 2009 |
ELECTRIC SPINNING TOY
Abstract
A spinning device for easy and safe operation, in which the
rotation of the device may be activated by simple means, and
therefore the device may be suitable for use by children. In
addition, the use of a spinning blade may provide special airflow
inside the device, which may cause the device to spin substantially
as long as power is applied to an electric motor of the device.
Inventors: |
ZILBERBERG; Ofer; (Tel Aviv,
IL) |
Correspondence
Address: |
Pearl Cohen Zedek Latzer, LLP
1500 Broadway, 12th Floor
New York
NY
10036
US
|
Family ID: |
41448011 |
Appl. No.: |
12/164552 |
Filed: |
June 30, 2008 |
Current U.S.
Class: |
446/256 |
Current CPC
Class: |
A63H 1/06 20130101 |
Class at
Publication: |
446/256 |
International
Class: |
A63H 1/00 20060101
A63H001/00 |
Claims
1. A device comprising: a body rotatable about an axle in a center
of said body, said body having a pointed end; a motor to rotate
said axle; at least one blade, said at least one blade connected at
an inner width side to said axle so as to rotate with said axle
when the axle rotates; and a casing covering said blade, the casing
having inbound and outbound vent openings, said inbound vent
openings located proximate a length of said at least one blade and
said outbound vent openings located proximate an outer width of
said at least one blade.
2. The device according to claim 1, wherein said inbound vent
openings are located substantially above said length of said blade
when said device is placed on the pointed end, thereby enabling
entry of air into said casing at a region of said at least one
blade from outside the casing.
3. The device according to claim 1, wherein said outbound vent
openings are located substantially outward from said outer width of
said blade relative to said axle, thereby enabling exit of air out
of said casing from a region of said at least one blade.
4. The device according to claim 1, wherein the distance from an
edge along the length of the blade to the inbound vent opening is
less then twice the greatest width of the blade.
5. The device according to claim 1, wherein the distance from an
edge along the length of the blade to the inbound vent opening is
less then the greatest width of the blade.
6. The device according to claim 1, wherein the distance from an
edge along the outer width of the blade to the outbound vent
opening is less then twice the length width of the blade.
7. The device according to claim 1, wherein the distance from an
edge along the outer width of the blade to the outbound vent
opening is less then the length width of the blade.
8. A device according to claim 1, further comprising a handle
integral with the casing, for activating rotation of said
device.
9. A device according to claim 8, further comprising a handle
rotatable relative to said casing.
10. A device according to claim 8, further comprising a handle
integral with the axis of said blade.
11. A device according to claim 1, further comprising a switch to
activate said motor.
12. A device according to claim 11, wherein said switch is to sense
rotational momentum applied to said body and to activate said motor
accordingly.
13. A device according to claim 12, wherein said switch is to
activate said motor to rotate the blade in a corresponding
direction to maintain the spinning of the body in the direction of
the sensed rotational momentum.
14. A device according to claim 12, wherein said switch comprising
a manual actuator enabling a user to activate said motor.
15. A device according to claim 12, wherein said switch comprising
a manual actuator enabling a user to predefine the direction in
which said motor rotates said blade.
16. A device according to claim 12, wherein said switch comprising
a magnetic field sensor to sense the magnetic field of the Earth,
said switch is to determine the direction of rotation of the device
according to the sensed magnetic field, and to activate the motor
to rotate blade in a corresponding direction to maintain rotation
of the device in the sensed direction of rotation.
17. A device comprising: a rotatable body; a motor to rotate said
body; and a switch comprising a flexible conductive leaf and at
least one contact pin, the flexible leaf to contact said at least
one contact pin when rotational momentum applied to said body, the
contact activates said motor.
18. A device according to claim 17, wherein said flexible
conductive leaf is to lean outwards radially from the rotation axis
when rotational momentum applied to said body.
19. A device according to claim 17, wherein said at least one
contact pin comprises two contact pins, each of the pins is placed
in other side of the leaf, and wherein said flexible conductive
leaf is to lean in an opposite direction to the direction of the
rotational momentum to contact one of said contact pins which is
placed in a corresponding side to the direction of leaning.
20. A device according to claim 19, wherein said switch is further
to sense the direction of the rotational momentum and to activate
said motor according to said direction.
21. A device according to claim 20, wherein said switch activates
said motor to maintain the rotation of the body in the sensed
direction of rotational momentum.
22. A device comprising: a rotatable body; a handle to initially
actuate rotation of said body; a motor; a switch to activate said
motor when said switch is in active position; and a switch actuator
integral with said handle, said switch being located in an
indentation in said activator, wherein said switch is to be pushed
to an active position by an internal margin of said indentation
when said switch actuator turns rotationally.
23. A device according to claim 22, wherein said actuator comprises
a plate integral with said handle, the plate being rotatably
connected on the device body, wherein said switch is to be pushed
to an active position when the plate rotates, and wherein after the
initial activation, the plate is locked to its position on the
device body.
24. A device according to claim 22, wherein said switch is to
actuate said motor to maintain rotation of the body in the
direction corresponding to the initial rotation direction of said
actuator.
Description
BACKGROUND OF THE INVENTION
[0001] There are many known kinds of spinning toys such as a
whipping top. Generally, a whipping top is a device having a wide
body and a central axis, with a handle protruding from the upper
side of the body and a tip on the lower side of the body. The
principle of operation of a whipping top is usually that a user
places the tip on a surface and provides an initial rotational
momentum to the body by holding the handle and giving it a
rotational thrust. Usually the spinning top spins for a short time,
and then falls when its rotational momentum is depleted by
friction. Often an attempt to operate the top fails, especially
when the user is a child, who has less skill and coordination than
an adult. Therefore, some of these toys may be difficult for use by
little children. There are some known automatic spinning devices
which use spring or electric motor to provide the initial
rotational momentum to the device. However, these devices may be
dangerous for children because of the high-speed rotation of the
blades needed in order to rotate these devices, and they will stop
rotating after all the energy from the initial momentum is
over.
BRIEF DESCRIPTION OF THE DRAWINGS
[0002] The subject matter regarded as the invention is particularly
pointed out and distinctly claimed in the concluding portion of the
specification. The invention, however, both as to organization and
method of operation, together with objects, features, and
advantages thereof, may best be understood by reference to the
following detailed description when read with the accompanying
drawings in which:
[0003] FIG. 1 is a schematic illustration of a spinning device
according to some embodiments of the present invention;
[0004] FIG. 2 is a schematic illustration of a spinning device with
a casing according to some embodiments of the present
invention;
[0005] FIG. 3 is a schematic illustration of a spinning device
according to other embodiments of the present invention;
[0006] FIGS. 4A and 4B are schematic illustrations of an exemplary
direction switch according to embodiments of the present
invention;
[0007] FIG. 5 is a schematic diagram illustrating operation of a
direction switch according to some embodiments of the present
invention;
[0008] FIGS. 6A and 6B are schematic illustrations of another
rotation direction switch according to some embodiments of the
present invention; and
[0009] FIGS. 7A and 7B are schematic illustrations of a
cross-section view and an exploded view of a device according to
embodiments of the present invention.
[0010] It will be appreciated that for simplicity and clarity of
illustration, elements shown in the figures have not necessarily
been drawn to scale. For example, the dimensions of some of the
elements may be exaggerated relative to other elements for clarity.
Further, where considered appropriate, reference numerals may be
repeated among the figures to indicate corresponding or analogous
elements.
DETAILED DESCRIPTION OF THE PRESENT INVENTION
[0011] In the following detailed description, numerous specific
details are set forth in order to provide a thorough understanding
of the invention. However, it will be understood by those skilled
in the art that the present invention may be practiced without
these specific details. In other instances, well-known methods,
procedures, and components have not been described in detail so as
not to obscure the present invention.
[0012] A spinning device according to embodiments of the present
invention may provide an easy and safe device, in which the
rotation of the device may be activated by simple means, and
therefore the device may be suitable for use by children. In
addition, the use of a spinning blade may provide special airflow
inside the device, which may cause the device to spin substantially
as long as power is applied to an electric motor of the device.
[0013] Reference is made to FIG. 1, which is a schematic
illustration of a basic mechanism for a spinning device 100
(external casing not shown) according to some embodiments of the
present invention. Device 100 may include a blade 110, a motor 112,
a plate 114, an axle 116 and batteries 118. Motor 112 may be
connected to plate 114. Batteries 118 may provide power to motor
112, for example, using two batteries, one on each side of the
central axis, and affixed on the bottom portion of the top;
however, it will be appreciated that the invention is not limited
in this respect and other power source means, e.g., solar power,
are possible. Blade 110 may be connected to motor 112 by axle 116.
Motor 112 may rotate blade 110. Blade 110 may produce friction with
the ambient air when rotating, which may generate a momentum
substantially equal in magnitude but opposite in direction to the
momentum of blade 110. This may actuate plate 114, for example,
together with motor 112, to spin in an opposite direction to the
direction of rotation of blade 110. For example, when blade 110
rotates in the direction of arrows A, plate 114 may rotate in the
direction of arrows C, such that the total momentum of blade 110
and plate 114 may be substantially zero. Arrows B illustrates
typical air flow in the region of blade 110 when rotating. Air may
enter the region of blade 110 from the top and be pushed in a
centrifugal direction as result of the rotation of blade 110. Blade
110 when spinning may constitute a safety hazard when uncovered,
especially when used in a toy for children. According to
embodiments of the present invention, device 100 may be implemented
in a casing which may make device 10 safe for use, substantially
without disturbing or reducing effectiveness of its operation.
[0014] Reference is now made to FIG. 2, which is a schematic
illustration of a spinning device 200 with a casing 220 according
to some embodiments of the present invention. The core of device
200 may be similar to device 100 described above with reference to
FIG. 1. Device 200 may include a blade 210, a motor 212, a plate
214, an axle 216 and batteries 218, which may operate substantially
as described in detail above with reference to FIG. 1. Device 200
may additionally include casing 220, which may provide cover to
blade 210 and make device 200 safe for use. As described above with
reference to FIG. 1, the principle of operation of device 200 is
based on the friction between the spinning blade 210 and the air
surrounding device 200. Plate 214 may be connected or integral with
casing 220 and may fix motor 212 at the central axis of device 200.
Casing 220 may include vent openings 224, for example, in order to
enable air circulation from outside the top casing and into contact
with blade 210 inside the casing and back out of the casing. Some
of openings 224 may be inbound vent openings and/or may be located
substantially above blade 210, for example, proximate to a length
of blade 210, thus, for example, enabling entrance of air into
casing 220 and into the region of blade 210. The rotation of blade
210 may push the air outwards from the region of blade 210 and from
casing 220 and therefore may prevent entrance of air into casing
220 from openings located on the sides of blade 210. Some of
openings 224 may be outbound vent openings and/or may be located
substantially on the sides of blade 210, for example, proximate to
an outer width of blade 210, thus, for example, enabling exit of
air out of the region of blade 210 and out of casing 220. As
described above, rotation of blade 210 produces friction forces
between the air surrounding casing 220 and blade 210. Therefore the
air surrounding casing 220 may apply to casing 220 moment opposite
in direction to the moment of blade 210.
[0015] The spinning of blade 210 influences significantly the air
in its close surroundings. Therefore, in order that rotation of
blade 210 may influence movement of casing 220, the part of casing
220 that covers blade 210, for example, from plate 214 and above,
should be close to blade 210. In some embodiments, the distances
between blade 210 and casing 220 may depend on the size of the
blade. For example, the distance from the edge of blade 210 and
upper part of casing 220 may be less than three times the width of
blade 210. In a preferred embodiment, for example, the distance
from the edge of blade 210 and upper part of casing 220 may be less
than twice the width of blade 210. In another preferred embodiment,
the distance from the edge of blade 210 and upper part of casing
220 may be less than the width of blade 210. Similar ratios may be
true for the distance between the edge of the blade 210 and the
outer circumferential side of casing 220. Thus, for example, the
distance from the edge of blade 210 and circumferential part of
casing 220 may be less than three times the length of blade 210,
for example, measured from the central axis. In a preferred
embodiment, for example, the distance from the edge of blade 210
and circumferential part of casing 220 may be less than twice the
length of blade 210. In another preferred embodiment, the distance
from the edge of blade 210 and circumferential part of casing 220
may be less than the length of blade 210.
[0016] Casing 220 may include a tip 222, which may enable device
200 to rotate on a surface 5 when tip 222 is placed on said surface
Casing 220 may also include a fixed handle 228, which may be
integral with the casing. Device 200 may be activated, for example,
by placing tip 222 on surface 5 and applying a moment to handle
228. In some embodiments, device 200 may include a free handle 230,
which may rotate substantially independently from blade 210 and
casing 220. Additionally or alternatively, device 200 may include
blade handle 232, which may be an extension of axle 216 and
integral with blade 210.
[0017] Motor 212 may be activated by switches 226, which may, for
example, turn the motor on or off and/or determine the mode of
operation of motor 212. Switches 226 may, for example, determine
the direction in which the motor should rotate spinning device 200.
The determination of the direction may be manual or automatic, for
example, based on the direction of rotation of device 200 and/or
the initial rotational momentum given to the device by the user.
The direction of rotation of device 200 and/or the initial
rotational momentum may be sensed by mechanical and/or electrical
means as described in detail below with reference to FIGS. 3 to 7.
Additionally or alternatively, a magnetic field sensor which may
sense the magnetic field of the Earth may be used for sensing the
direction of rotation of spinning device 200. When motor 212 is
activated, it may rotate blade 210 in rotational direction, thus
causing rotation of casing 220 in an opposite rotational direction,
as described above.
[0018] Some embodiments of the present invention enable easy
activation of the device, which may not require any special skill
or coordination. A user may hold device 200 above surface 5 by free
handle 230 and activate motor 212, thus activating rotation of
casing 220. Device 200 may then be placed with tip 222 on surface 5
while maintaining the rotation of casing 220. Casing 220 may
continue spinning as long as motor 212 is on. Alternatively, a user
may hold device 200 above surface 5 by blade handle 232 and
activate motor 212. Rotation of blade 210 may be prevented by
holding blade handle 232, thus causing motor 212 to rotate around
axle 216 together with casing 220. Motor 212 may be connected to
casing 220, for example, by plate 214 which may transfer the
rotational motion of motor 212 to casing 220.
[0019] Reference is now made to FIG. 3, which is a schematic
illustration of a spinning device 300 according to some embodiments
of the present invention. Device 300 may include a blade 310, a
motor 312, a plate 314, batteries 318, casing 320, tip 322,
openings 324, for example, vents on the upper and circumferential
parts of casing 320, fixed handle 328 and free handle 330. Device
300 may also include an inertia switch 326. Device 300 may be
activated manually by providing initial rotational velocity to
fixed handle 328. For example, a user may hold fixed handle 328 and
give it a rotational thrust, as in activation of a regular whipping
top. Inertia switch 326 may sense the rotational motion and
activate motor 312, which may maintain the spinning of device 300.
Inertia switch 326 may include a flexible conductive leaf 326a and
a contact pin 326b, such that when contact is created between
conductive leaf 326a and contact pin 326b, motor 312 may be
activated. Conductive leaf 326a may be located against contact pin
326b, in a substantially radial direction from the rotation axis of
device 300. When device 300 spins, centrifugal forces may cause
leaf 326a to lean outwards radially from the rotation axis, thus,
for example, making contact with contact pin 326b.
[0020] Additionally or alternatively, device 300 may include a
direction switch 332. Direction switch 332 may sense the initial
direction of rotation and actuate motor 312 to spin blade 310 in a
corresponding direction to maintain the spinning of device 300 in
the initial direction of rotation. Direction switch 332 may include
a flexible conductive leaf 332a and contact pins 332b. Contact may
be created between conductive leaf 332a and one of contact pins
332b respectively according to the direction of rotation of device
300. The contact may actuate motor 312 to rotate blade 310 in a
corresponding direction to maintain the spinning of device 300 in
the initial direction of rotation. Conductive leaf 332a may be
located between contact pins 332b in a circumferential direction
around the rotation axis of device 300. When device 300 spins, the
friction with the air may cause leaf 332a to lean in an opposite
direction to the direction of rotation of plate 314, thus, for
example, making contact with one of contact pins 332b. Since
direction switch 332 may sense a direction of rotation, it may also
sense the actuality of the rotation. Direction switch 332 may also
be used to activate motor 312 when rotation of device 300 is
sensed, for example, as an alternative or in addition to inertia
switch 326.
[0021] In some embodiments of the present invention, after
activation of switch 326 and/or switch 332, a user may hold device
300 in the air by free handle 330, thus, for example, enabling
device 300 to acquire spinning speed. When the spinning speed of
device 300 is high enough, a user may put tip 322 on a surface and,
for example, device 300 may continue spinning on this surface.
[0022] Additionally or alternatively, inertia switch 326 and/or
direction switch 332 may be activated manually by an external
actuator(s), for example as described below with reference to FIGS.
4A and 4B.
[0023] Reference is now made to FIGS. 4A and 4B, which are
schematic illustrations of an exemplary direction switch 400
according to embodiments of the present invention which may be an
example of direction switch 332 described above with reference to
FIG. 3. FIG. 4A illustrates a side projection of switch 400 and
FIG. 4B illustrates a three-dimensional view of switch 400.
Direction switch 400 may include a flexible conductive leaf 410
attached to a plate 440 to serve as sail, contact pins 412a and
412b and manual switch 416. Direction switch 400 may be placed on a
plate 414 similar to plate 314 described in FIG. 3. Conductive leaf
410 may be located between contact pins 412a and 412b along the
periphery of plate 414. When plate 414 rotates, for example,
together with a spinning device as described above, the friction
with the air may cause leaf 410 to lean in an opposite direction to
the direction of rotation of plate 414, thus, for example, making
contact with contact pin 412a or contact pin 412b respectively.
FIG. 4A illustrates three conditions of leaf 410. When plate 414
rests, leaf 410 may be in condition B, where it may be straight and
perpendicular to plate 414. When plate 414 rotates, the friction of
plate 440 with the surrounding air may bring leaf 410 to condition
A or C (notated with dashed lines), according to the direction of
rotation of plate 414. In each of conditions A and C leaf 410 may
contact one of contact pins 412a or 412b, respectively. In
condition A leaf 410 may contact pin 412b and in condition C leaf
410 may contact pin 412a. As described above with reference to FIG.
3, the contact with one of contact pins 412a or 412b may actuate
the motor of the spinning device to maintain the spinning of the
spinning device in the initial direction of rotation,
respectively.
[0024] Switch 400 may also be activated manually by manual actuator
416. Manual switch 416 may be in a rest position which enables leaf
410 to be activated by rotation of plate 414, as described in
detail above. Manual actuator 416 may be shifted manually to
position X or Y (notated with dashed lines). When shifted to one of
the positions X or Y, manual actuator 416 may incline leaf 410
towards one of contact pins 412a or 412b respectively, thus causing
contact between leaf 410 and one of contact pins 412a or 412b,
respectively.
[0025] As shown in FIG. 4B, each of contact pins 412a or 412b may
include two contact legs 432, respectively. Leaf 410 may include
two leaf legs 430. When leaf 410 leans towards one of contact pins
412a and 412b, each leaf leg 430 may contact one of contact legs
432, respectively. Leaf legs 430 may be electrically insulated from
each other and attached together by plate 440 of insulating
material. In each of contact pins 412a and 412b, each contact leg
432 may be connected to a different pole of the power source (for
example, batteries 318 shown in FIG. 3). The polarity of contact
legs 432 of contact pin 412a may be opposite to the polarity of
contact legs 432 of contact pins 412b, such that, for example, the
same leaf leg may be connected to the negative pole when leaf 410
is in position A, and to the positive pole when leaf 410 is in
position C, or vice versa. This arrangement may enable a double
pole switch as described below with reference to FIG. 5.
[0026] Reference is now made to FIG. 5, which is a schematic
diagram illustrating operation of a direction switch 500 according
to some embodiments of the present invention. Direction switch 500
may be an example of direction switch 400 described above with
reference to FIGS. 4A and 4B. Direction switch 500 may include leaf
510 including two leaf legs 530a and 530b, and contact legs pairs
512a and 512b, including contact legs 532a, 532b, 532c and 532d
respectively. Leaf legs 530a and 530b may connect motor 550 to the
power source in one of two opposite polarities, for example, by
contacting one of contact legs pairs 512a and 512b, respectively.
Motor 550 may spin a blade as described above with reference to
FIGS. 1-3. The rotation direction of the blade may correspond to
the polarity of the connection of motor 550 to the power source.
Contact legs 532a and 532c may be connected to the positive pole of
the power source (which may be, for example, batteries 318 shown in
FIG. 3) and Contact legs 532b and 532d may be connected to the
negative pole of the power source, or vice versa. When leaf 510
contacts pair 512a, leaf leg 530a may contact leg 532a and leaf leg
530b may contact leg 532b, thus, for example, connecting motor 550
to the power source in one polarity. When leaf 510 contacts pair
512b, leaf leg 530a may contact leg 532c and leaf leg 530b may
contact leg 532d, thus, for example, connecting motor 550 to the
power source in the opposite polarity. Motor 550 may rotate the
blade in a direction corresponding to the polarity of the
connection to the power source.
[0027] Reference is now made to FIGS. 6A and 6B, which are
schematic illustrations of another form of a rotation direction
switch actuator 600 which may be used in a spinning device
according to some embodiments of the present invention. FIG. 6A
illustrates a three-dimensional view of switch actuator 600 and
FIG. 6B illustrates a top view of switch actuator 600. Direction
switch actuator 600 may include plate 612 with indentation 614,
which may be attached and/or integral with handle 610 of the
spinning device. Plate 612 may be rotatably connected on a spinning
device body 620. a switch 616 may protrude into indentation 614 so
that, for example, when plate 612 rotates, the internal margin 615
of indentation 614 may thrust switch 616 to an active position.
When in an active position, switch 616 may actuate the motor of the
spinning device. In some embodiments, for example, switch 616 may
actuate the motor of the spinning device according to the direction
of rotation of plate 612. When activating handle 610 to spin the
spinning device, for example, providing an initial rotational
momentum to handle 610, plate 612 may rotate together with handle
610 and push switch 616 to an active position, thus, for example,
activating the motor of the device to keep rotating the device. In
some embodiments, switch 616 may actuate motor 616 to rotate the
device in the initial rotation direction, for example as described
above with reference to FIGS. 2 to 5. After the initial actuation,
plate 612 and/or handle 610 may be locked to its position on the
spinning device body 620, and the spinning device may keep turning
due to the momentum provided in the initial actuation and/or the
operation of the motor actuated by switch 616.
[0028] Additionally to rotation direction switch actuator 600, the
spinning device may include manual switch 618, which may enable a
user to preset the motor for spinning in a predefined direction.
When activating handle 610, plate 612 may push switch 616 which may
actuate the motor to rotate the device, for example, in the
direction predefined by switch 618.
[0029] Reference is now made to FIGS. 7A and 7B, which are
schematic illustrations of a spinning device 700 according to other
embodiments of the present invention. FIG. 7A is a cross-sectional
schematic illustration of device 700. Device 700 may include a
blade 710, a motor 712, a plate 714, batteries 718, a covering 721,
a base 720, a tip 722, a switch actuator 740, a switch actuator
handle 728, a free handle 730 and openings 724, for example, on the
upper and circumferential parts of covering 721. Openings 724 may
be similar and/or function similarly to openings 224 and/or 324
shown and described above with reference to FIGS. 2 and 3.
[0030] Device 700 may also include a switch 726 (shown in FIG. 7B),
for example, to actuate motor 712 in the manner described below
with reference to FIG. 7B. Switch actuator 740 may activate motor
712, for example, to maintain spinning of device 700, for example,
by rotating blade 710 as described above with reference to FIGS.
1-3. Device 700 may be activated by giving a rotational thrust to
handle 728, for example, in a similar manner to activation of a
regular spinning top. As a result, actuator 740 may move in a
rotational direction and activate switch 726. Switch 726 may be a
direction switch, which may activate motor 712 to maintain spinning
of device 700 in the initial direction corresponding to a
rotational thrust given to handle 728.
[0031] In some embodiments of the present invention, after
activation of switch 726 a user may hold device 700 in the air by
free handle 730, thus, for example, enabling device 700 to acquire
spinning speed. When the spinning speed of device 700 is high
enough, a user may put tip 722 on a surface and, for example,
device 700 may continue spinning on this surface.
[0032] FIG. 7B shows exploded and assembled three-dimensional views
of spinning device 700. In FIG. 7B free handle 730 and covering 721
are not shown. Switch actuator 740 may include projections 742
which may be used to operation of switch 726. Projection 742 may
include indentation 744. When assembled on plate 714, switch 726
may be located in indentation 744 between internal margins 745 of
indentation 744. If switch actuator 740 is being turned, for
example, by handle 728, one of margins 745 may push switch 726 to
an active state, which may activate motor 712.
[0033] In some embodiments, motor 712 may activate device 700 to
rotate in a direction corresponding to the direction of a first
rotational thrust given to handle 728 and/or actuator 740. Switch
726 may have, for example, at least two active positions, one for
clockwise rotation of device 700 and the other for counter
clockwise rotation of device 700. When activating handle 728 to
turn actuator 740 by, for example, providing an initial rotational
momentum to handle 728, one of margins 745 may push switch 726 in a
corresponding direction, for example, to an active position which
may activate the motor to spin device 700 in clockwise or
counterclockwise direction, according to the first rotational
thrust given to handle 728.
[0034] While certain features of the invention have been
illustrated and described herein, many modifications,
substitutions, changes, and equivalents will now occur to those of
ordinary skill in the art. It is, therefore, to be understood that
the appended claims are intended to cover all such modifications
and changes as fall within the true spirit of the invention.
* * * * *