U.S. patent application number 16/189696 was filed with the patent office on 2019-03-14 for utility knife.
The applicant listed for this patent is Milwaukee Electric Tool Corporation. Invention is credited to Joseph M. DeBaker, Christopher S. Hoppe, Steven W. Hyma, Grant T. Squiers, Michae Stearns.
Application Number | 20190077032 16/189696 |
Document ID | / |
Family ID | 57016620 |
Filed Date | 2019-03-14 |
View All Diagrams
United States Patent
Application |
20190077032 |
Kind Code |
A1 |
Squiers; Grant T. ; et
al. |
March 14, 2019 |
Utility Knife
Abstract
A utility knife including a handle, a blade, a first blade
holder, and a spare blade holder. The spare blade holder is pivotal
with respect to the handle between an open position where the
recess is exposed to allow a spare blade to be removed from the
spare blade holder and a closed position where the recess is within
a slot of the handle to inhibit removal of the spare blade from the
spare blade holder. The spare blade holder further including a cam
surface and the cam surface of the spare blade holder engages a cam
surface of the handle when the spare blade holder is in the closed
position to urge the spare blade holder in a direction from a first
longitudinal side of the handle toward a second longitudinal side
of the handle to allow the first blade holder to pivot between
extended and folded positions.
Inventors: |
Squiers; Grant T.; (Cudahy,
WI) ; Hyma; Steven W.; (Milwaukee, WI) ;
Hoppe; Christopher S.; (Milwaukee, WI) ; Stearns;
Michae; (Milwaukee, WI) ; DeBaker; Joseph M.;
(Greenfield, WI) |
|
Applicant: |
Name |
City |
State |
Country |
Type |
Milwaukee Electric Tool Corporation |
Wisconsin |
WI |
US |
|
|
Family ID: |
57016620 |
Appl. No.: |
16/189696 |
Filed: |
November 13, 2018 |
Related U.S. Patent Documents
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Application
Number |
Filing Date |
Patent Number |
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15083698 |
Mar 29, 2016 |
10144139 |
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16189696 |
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62222918 |
Sep 24, 2015 |
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62180238 |
Jun 16, 2015 |
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62141966 |
Apr 2, 2015 |
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Current U.S.
Class: |
1/1 |
Current CPC
Class: |
B26B 1/046 20130101;
B26B 1/02 20130101; B26B 5/00 20130101; B26B 5/003 20130101 |
International
Class: |
B26B 5/00 20060101
B26B005/00 |
Claims
1. A utility knife comprising: a handle that comprises a first
longitudinal side, a second longitudinal side opposite the first
longitudinal side, a top side, a bottom side, and a slot that
extends through the bottom side, the slot between the first and
second longitudinal sides; a blade; a blade holder, the blade
removably coupled to the blade holder, the blade holder pivotable
with respect to the handle between an extended position where the
blade is exposed and configured to cut a work-piece and a folded
position where the blade is within the slot of the handle, the
blade holder comprising a first notch and a second notch; and a
locking mechanism comprising: a push button movable between a
locked position and an unlocked position, the blade holder
pivotable with respect to the handle between the extended and
folded positions when the push button is in the unlocked position
and the blade holder is held from pivotal movement relative to the
handle when the push button is in the locked position, the push
button comprising a first portion of a first diameter and a second
portion of a second diameter that is larger than the first diameter
and a frusto-conical portion between the first and second portions,
the second portion of the push button is received in the first
notch of the blade holder to hold the blade holder in the extended
position and the second portion of the push button is received in
the second notch of the blade holder to hold the blade holder in
the folded position, and a coil spring that biases the push button
toward the locked position.
2. The utility knife of claim 1, wherein the blade holder further
comprises a third notch between the first notch and the second
notch, wherein the second portion of the push button is received in
the third notch of the blade holder to hold the blade holder in an
intermediate position between the folded and extended
positions.
3. The utility knife of claim 1, wherein the push button comprises
a recess and the handle comprises a recess, wherein an end of the
spring is received within the recess of the handle and an opposite
end of the spring is received within the recess of the push
button.
4. The utility knife of claim 1, wherein the blade holder comprises
a front end, a back end, a top edge, and a bottom edge, wherein the
blade holder comprises an upwardly angled surface on the top edge
at the front end of the blade holder.
5. A utility knife comprising: a handle that comprises a first
longitudinal side, a second longitudinal side opposite the first
longitudinal side, a top side, a bottom side, and a slot that
extends through the bottom side, the slot between the first and
second longitudinal sides; a blade; a blade holder, the blade
removably coupled to the blade holder, the blade holder pivotable
with respect to the handle between an extended position where the
blade is exposed and configured to cut a work-piece and a folded
position where the blade is within the slot of the handle, the
blade holder comprising a first notch and a second notch; and a
locking mechanism comprising: an actuator movable between a locked
position and an unlocked position, the blade holder pivotable with
respect to the handle between the extended and folded positions
when the actuator is in the unlocked position and the blade holder
is held from pivotal movement relative to the handle when the
actuator is in the locked position, the actuator comprising a first
portion of a first diameter and a second portion of a second
diameter that is larger than the first diameter, the second portion
of the actuator is received in the first notch of the blade holder
to hold the blade holder in the extended position and the second
portion of the actuator is received in the second notch of the
blade holder to hold the blade holder in the folded position, and a
biasing element that biases the actuator toward the locked
position.
6. The utility knife of claim 5, wherein the blade holder further
comprises a third notch between the first notch and the second
notch, wherein the second portion of the actuator is received in
the third notch of the blade holder to hold the blade holder in an
intermediate position between the folded and extended
positions.
7. The utility knife of claim 5, wherein the actuator comprises a
recess and the handle comprises a recess, wherein an end of the
biasing element is received within the recess of the handle and an
opposite end of the biasing element is received within the recess
of the push button.
8. The utility knife of claim 7, wherein the handle comprises a
post within the recess to stabilize the biasing element.
9. The utility knife of claim 5, wherein the blade holder comprises
a front end, a back end, a top edge, and a bottom edge, wherein the
blade holder comprises an upwardly angled surface on the top edge
at the front end of the blade holder.
10. The utility knife of claim 5, wherein the actuator comprises a
frusto-conical portion between the first and second portions.
11. The utility knife of claim 5, wherein the biasing element
comprises a spring.
12. The utility knife of claim 5, wherein the actuator comprises a
push button.
13. A utility knife comprising: a handle that comprises a first
longitudinal side, a second longitudinal side opposite the first
longitudinal side, a top side, a bottom side and a slot between the
first and second longitudinal sides; a blade; a blade holder, the
blade removably coupled to the blade holder, the blade holder
pivotable with respect to the handle between an extended position
where the blade is exposed and a folded position where the blade is
within the slot of the handle, the blade holder comprising a first
notch and a second notch; and a locking mechanism comprising: an
actuator movable between a locked position and an unlocked
position, the blade holder pivotable with respect to the handle
between the extended and folded positions when the actuator is in
the unlocked position and the blade holder is held from pivotal
movement relative to the handle when the actuator is in the locked
position, the actuator comprising a first portion of a first
diameter and a second portion of a second diameter that is larger
than the first diameter, the second portion of the actuator is
received in the first notch of the blade holder to hold the blade
holder in the extended position and the second portion of the
actuator is received in the second notch of the blade holder to
hold the blade holder in the folded position, and a biasing element
that biases the actuator toward the locked position.
14. The utility knife of claim 13, wherein the second portion
actuator comprises a frusto-conical external surface.
15. The utility knife of claim 13, wherein the actuator comprises a
frusto-conical portion between the first and second portions.
16. The utility knife of claim 13, wherein the blade holder further
comprises a third notch between the first notch and the second
notch, wherein the second portion of the actuator is received in
the third notch of the blade holder to hold the blade holder in an
intermediate position between the folded and extended
positions.
17. The utility knife of claim 13, wherein the actuator comprises a
recess and the handle comprises a recess and a post, wherein an end
of the biasing element is received within the recess of the push
button and an opposite end of the biasing element is received
within the recess of the handle around the post.
18. The utility knife of claim 13, wherein the blade holder
comprises a front end, a back end, a top edge, and a bottom edge,
wherein the blade holder comprises an upwardly angled surface on
the top edge at the front end of the blade holder.
19. The utility knife of claim 13, wherein the biasing element
comprises a spring and the actuator comprises a push button.
20. The utility knife of claim 13, wherein the slot extends through
the bottom side of the handle.
Description
CROSS-REFERENCE TO RELATED APPLICATIONS
[0001] This application is a continuation of U.S. application Ser.
No. 15/083,698, filed Mar. 29, 2016, which claims priority to U.S.
Provisional Application No. 62/222,918, filed Sep. 24, 2015, U.S.
Provisional Application No. 62/180,238, filed Jun. 16, 2015, and
U.S. Provisional Application No. 62/141,966, filed Apr. 2, 2015,
the entire contents of each of which are hereby incorporated by
reference herein.
BACKGROUND
[0002] The present invention relates to utility knives. Utility
knifes typically include a handle and a blade. In some utility
knives, the blade slides relative to the handle from a retracted
position, where the blade is stored inside the handle, to an
extended position where the blade extends from the handle. In the
extended position, the blade is used to cut a work-piece. In other
types of the utility knives, the blade pivots relative to the
handle. In both types of utility knifes the blade is typically
replaceable.
SUMMARY
[0003] In one embodiment, the invention provides a utility knife
including a handle that includes a first longitudinal side, a
second longitudinal side opposite the first longitudinal side, a
top side, a bottom side, and a slot that extends through the bottom
side. The slot is between the first and second longitudinal sides
and the handle further including a cam surface. The utility knife
further includes a blade and a first blade holder. The blade is
removably coupled to the first blade holder, and the first blade
holder is pivotal with respect to the handle between an extended
position where the blade is exposed and configured to cut a
work-piece and a folded position where the blade is within the slot
of the handle. The utility knife further includes a spare blade
holder including a recess configured to receive a spare blade. The
spare bladeholder is pivotal with respect to the handle between an
open position where the recess is exposed to allow the spare blade
to be removed from the spare blade holder and a closed position
where the recess is within the slot of the handle to inhibit
removal of the spare blade from the spare blade holder. The spare
blade holder further including a cam surface and the cam surface of
the spare blade holder engages the cam surface of the handle when
the spare blade holder is in the closed position to urge the spare
blade holder in a direction from the first longitudinal side of the
handle toward the second longitudinal side of the handle to allow
the first blade holder to pivot between the extended and folded
positions.
[0004] In another embodiment the invention provides a utility knife
including a handle that includes a first longitudinal side, a
second longitudinal side opposite the first longitudinal side, a
top side, a bottom side, and a slot that extends through the bottom
side, the slot between the first and second longitudinal sides. The
utility knife further includes a blade and a blade holder. The
blade is removably coupled to the blade holder and the blade holder
is pivotal with respect to the handle between an extended position
where the blade is exposed and configured to cut a work-piece and a
folded position where the blade is within the slot of the handle.
The utility knife further includes a locking mechanism including a
biasing member and an actuator movable between a locked position
and an unlocked position. The blade holder is pivotable with
respect to the handle between the extended and folded positions
when the actuator is in the unlocked position and the blade holder
is held from pivotally movement relative to the handle when the
actuator is in the locked position. The biasing member that biases
the actuator toward the locked position. The handle further
includes an accommodating portion that extends outwardly from the
second longitudinal side and at least a portion of the biasing
member extends into the accommodating portion when the actuator is
in the unlocked position.
[0005] In another embodiment the invention provides a utility knife
including a handle that includes a first longitudinal side, a
second longitudinal side opposite the first longitudinal side, a
top side, a bottom side, and a slot that extends through the bottom
side, the slot between the first and second longitudinal sides. The
utility knife further includes a blade and a blade holder. The
blade is removably coupled to the blade holder and the blade holder
is pivotal with respect to the handle between an extended position
where the blade is exposed and configured to cut a work-piece and a
folded position where the blade is within the slot of the handle.
The blade holder includes a first notch and a second notch. The
utility knife further includes a coil spring and a locking
mechanism including a push button movable between a locked position
and an unlocked position. The blade holder is pivotable with
respect to the handle between the extended and folded positions
when the push button is in the unlocked position and the blade
holder is held from pivotally movement relative to the handle when
the push button is in the locked position. The push button includes
a first portion of a first diameter and a second portion of a
second diameter that is larger than the first diameter and a
frusto-conical portion between the first and second portions. The
second portion of the push button is received in the first notch of
the blade holder to hold the blade holder in the extended position
and the second portion of the push button is received in the second
notch of the blade holder to hold the blade holder in the folded
position. The coil spring biases the actuator toward the locked
position.
[0006] Other aspects of the invention will become apparent by
consideration of the detailed description and accompanying
drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
[0007] FIG. 1 is a perspective view of a utility knife according to
an embodiment of the invention.
[0008] FIG. 2 is an alternative perspective view of the utility
knife of FIG. 1.
[0009] FIG. 3 is a perspective view of the utility knife of FIG. 1
with a blade holder in the extended position.
[0010] FIG. 4 is an alternative perspective view of the utility
knife of FIG. 1 with the blade holder in the extended position and
a blade storage compartment in an open position.
[0011] FIG. 5 is a perspective view of the utility knife of FIG. 1
with a portion of the handle removed and the blade holder in a
partially extended position.
[0012] FIG. 6 is a side view of the utility knife of FIG. I with
the blade holder in the partially extended position.
[0013] FIG. 7 is a cross-sectional view of the utility knife of
FIG. 1, taken along line 7-7 in FIG. 1.
[0014] FIG. 8 is a bottom view of the utility knife of FIG. 1.
[0015] FIG. 9 is an exploded view of a portion of the utility knife
of FIG. 1.
[0016] FIG. 10 is a perspective view of a utility knife according
to another embodiment of the invention.
[0017] FIG. 11 is an alternative perspective view of the utility
knife of FIG. 10.
[0018] FIG. 12 is a perspective view of the utility knife of FIG.
10 with a blade holder in the extended position.
[0019] FIG. 13 is an alternative perspective view of the utility
knife of FIG. 10 with the blade holder in the extended
position.
[0020] FIG. 14 is a perspective view of the utility knife of FIG.
10 with a portion of the handle removed and the blade holder in the
extended position.
[0021] FIG. 15 is a perspective view of a utility knife according
to another embodiment of the invention.
[0022] FIG. 16 is a partially-exploded view of a portion of the
utility knife of FIG. 15.
[0023] FIG. 17 is a perspective view of a blade holder of the
utility knife of FIG. 15.
[0024] FIG. 18 is an enlarged cross-sectional view of the utility
knife of FIG. 15, taken along line 18-18 in FIG. 15.
[0025] Before any embodiments of the invention are explained in
detail, it is to be understood that the invention is not limited in
its application to the details of construction and the arrangement
of components set forth in the following description or illustrated
in the following drawings. The invention is capable of other
embodiments and of being practiced or of being carried out in
various ways.
DETAILED DESCRIPTION
[0026] FIGS. 1-4 illustrate a knife 10, which is a utility knife in
the illustrated embodiment. The knife 10 includes a handle 12 and a
blade holder 14 that is pivotally coupled to the handle 12 and
movable between a folded or retracted position (FIG. 2) and an
extended position (FIG. 3). The handle 12 includes a front end
portion 18 and a back end portion 20. The blade holder 14 is
pivotally attached to the front end portion 18 of the handle 12 via
a fastener 22. The handle 12 further includes a first longitudinal
side 61, a second longitudinal side 62 opposite the first
longitudinal side 61, a top side 63, and a bottom side 64. A slot
65 extends through the bottom side 64 between the first and second
sides 61, 62. The illustrated sides 61, 62 are generally flat.
[0027] The back end portion 20 of the handle 12 includes a cutout
or hook portion 26. The cutout 26 exposes a portion of a blade 28
held by the blade holder 14 when the blade holder 14 is in the
folded position so that the blade 28 can be used to cut wire, rope,
line, etc. The back end portion 20 of the handle 12 further
includes an aperture 30 that extends through the handle 12. The
aperture 30 provides a location for the user to attach the knife 10
to a lanyard, belt, clip, or the like.
[0028] With reference to FIGS. 5 and 7, the knife 10 further
includes a locking mechanism 23 located at the front end portion 18
of the handle 12 and operable to lock and unlock the blade holder
14 to allow the user to pivot the blade holder 14 relative to the
handle 12. The locking mechanism 23 includes a push button 24 and a
spring 25, which is a coil spring in the illustrated embodiment.
The spring 25 biases the push button 24 in the direction of arrow A
in FIG. 7. The push button 24 has a first portion 27 of a first
diameter and a second portion 29 of a second diameter that is
larger than the first diameter. The illustrated second portion 29
has a generally frusto-conical external surface 31 and a
cylindrical recess 33. One end of the spring 25 is received within
the recess 33, and an opposite end of the spring 25 is received
within a recess 35 in the handle 12. In the illustrated embodiment,
a post 37 is provided within the recess 35 to stabilize the spring
25.
[0029] Referring to FIGS. 2, 4, and 5, the knife 10 further
includes a spare blade holder 32 having a front end 39 and a back
end 41, which is pivotally attached to the back end portion 20 of
the handle 12. The spare blade holder 32 retains spare utility
blades 28 in a recess 66 of the spare blade holder 32. In one
embodiment the spare blade holder 32 retains four or more spare
utility blades 28. The spare blade holder 32 is pivotable between a
closed position (FIG. 2) and an open position (FIG. 4). A ball 34
(FIG. 5) is biased by a spring 36 into an aperture 38 of the spare
blade holder 32 to retain the spare blade holder 32 in the closed
position. In one embodiment, the spare blade holder 32 includes a
magnet to retain the spare blades 28 in the holder 32.
[0030] With reference to FIGS. 8 and 9, the front end 39 of the
spare blade holder 32 includes an angled cam surface 43 that bears
against a corresponding angled cam surface 45 provided on the
handle 12 when the spare blade holder 32 is in the closed position.
The engagement of the cam surfaces 43, 45 forces the spare blade
holder 32 against the handle 12 in the direction of arrow Bin FIG.
8. This arrangement inhibits the spare blade holder 32 from
interfering with movement of the blade holder 14. In some
embodiments, the cam surface 43 defines an angle 47 between about 5
degrees and about 30 degrees (FIG. 9). In the illustrated
embodiment, the angle 47 is about 10 degrees.
[0031] Referring to FIGS. 3 and 5, the blade holder 14 includes a
front end portion 40 and a back end portion 42. The blade holder 14
is pivotally attached to the handle 12 at the back end portion 42
of the blade holder 14 and the blade 28 extends from the front end
portion 40 of the blade holder 14. The back end portion 42 of the
blade holder 14 includes notches 44, 46, and 48. When the second
portion 29 of the push button 24 is received in the first notch 44,
the blade holder 14 is held in the folded or closed position. When
the second portion 29 is received in the third notch 48, the blade
holder 14 is held in the fully extended position (FIG. 3). When the
second portion 29 of the push button 24 is received in the second
notch 46, the blade holder 14 is held in a partially extended or
intermediate position illustrated in FIGS. 5 and 6, which is
between the folded position and the fully extended position. The
intermediate position may be more convenient and ergonomic for
certain applications. For example, using the knife 10 with the
blade holder 14 in the intermediate position is particularly
advantageous for cutting carpet or for cutting materials overhead.
The blade holder 14 preferably extends at an angle between about 30
degrees and about 60 degrees relative to the handle 12 when in the
intermediate position. In the illustrated embodiment, the blade
holder 14 extends at an angle of about 45 degrees relative to the
handle 12 when in the intermediate position.
[0032] The blade holder 14 further includes a top edge 50 and a
bottom edge 52. The bottom edge 52 include a recess 54 that exposes
a portion of the blade 28 so that the blade 28 can be used to strip
insulation from wire or to cut wire, rope, line, etc. An upwardly
angled surface 56 is located along the top edge 50 at the front end
40 of the blade holder 14. The surface 56 is upwardly angled at an
angle 58 (FIG. 3). In some embodiments, the angle 58 is between
about 5 degrees and about 60 degrees. The surface 56 provides the
user with a place to push with their finger (e.g., thumb when using
the knife). Also, the surface 56 inhibits the user's finger (e.g.,
thumb) from sliding off of the front of top edge 50 when the user
places their finger on the top edge 50 when using the knife to cut
a work piece. The top edge 50 of the blade holder 14 further
includes an enlarged surface 60 that extends out laterally from the
top edge 50. The surface 60 is integrally formed with the blade
holder 14 and provides the user with another place to put their
finger when cutting using the knife 10. Also, as seen in FIG. 2 and
FIG. 8, the enlarged surface 60 inhibits the spare blade holder 32
from moving toward the open position when the blade holder 14 is in
the folded position.
[0033] In operation, to open the blade holder 14 to the
intermediate position, the user presses the button 24 to move the
second portion 29 out from within the first notch 44, which allows
the user to pivot the blade holder 14 from the folded position to
the intermediate position (FIG. 5). With the button 24 released,
the spring 25 moves the button 24 in the biasing direction of arrow
A until the second portion 29 engages the second notch 46 to retain
the blade holder 14 in the intermediate position. The
frusto-conical shape 31 on the second portion 29 allows the second
portion 29 to wedge into the notch 46 (FIG. 7).
[0034] To further open the blade holder 14 to the fully extended
position, the user presses the button 24 to move the second portion
29 out from within the second notch 46, which allows the user to
pivot the blade holder 14 from the intermediate position to the
fully extended position (FIGS. 3 and 5). With the button 24
released, the spring 25 moves the button 24 in the biasing
direction of arrow A until the second portion 29 engages the third
notch 48 to retain the blade holder 14 in the fully extended
position. To bypass the intermediate position and pivot the blade
holder 14 from the closed position to the fully extended position,
the user need only maintain pressure on the button 24 until the
blade holder 14 pivots beyond the intermediate position.
[0035] FIGS. 10-14 illustrate a knife 110, which is a utility knife
in the illustrated embodiment according to another embodiment. The
utility knife 110 includes features similar to the utility knife 10
of FIGS. 1-9, and like components have been given like reference
numbers plus 100. The utility knife 110 further includes an arcuate
recess 167 along a bottom edge 152 of blade holder 114. The arcuate
recess 167 provides a convenient and comfortable grip when the user
grips the knife 110 on a portion of the blade holder 114.
[0036] FIGS. 15-18 illustrate a knife 210, which is a utility knife
in the illustrated embodiment, according to another embodiment. The
utility knife 210 includes features similar to the utility knife 10
of FIGS. 1-9, and like components have been given like reference
numbers plus 200. The utility knife 210 includes a handle 212 and a
blade holder 214 that is pivotally coupled to the handle 212 and
movable between a folded or retracted position (not shown) and an
extended position (FIG. 15). The handle 212 includes first handle
portion 213 and a second handle portion 215 opposite the first
handle portion 213. A fastener 222 extends through the handle
portions 213, 215 and the blade holder 214 to pivotally couple the
blade holder 214 to the handle 212.
[0037] With reference to FIG. 16, the knife 210 further includes a
locking mechanism 223 operable to lock and unlock the blade holder
214 to allow the user to pivot the blade holder 214 relative to the
handle 212. The locking mechanism 223 includes a push button 224
and a spring 225. Referring to FIG. 18, the push button 224 has a
first portion 227 of a first diameter and a second portion 229 of a
second diameter that is larger than the first diameter. The
illustrated second portion 229 includes a generally frusto-conical
external surface 231. The spring 225 in the illustrated embodiment
is a spring plate having a resilient finger 225a that is engageable
with the push button 224. The finger 225a may be formed by removing
(e.g., by punching or cutting) a portion of the spring plate 225.
The finger 225a is bent out of plane with the remainder of the
spring plate 225, and a free end of the finger 225a engages the
push button 224 to bias the push button 224 in the direction of
arrow C in FIG. 16.
[0038] With reference to FIGS. 15 and 18, the second handle portion
215 includes an accommodating portion 249 that projects outwardly
beyond the remainder of the second handle portion 215. In the
illustrated embodiment, the accommodating portion 249 is tapered
from a maximum thickness proximate the fastener 222 to a minimum
thickness in a direction toward a back end portion 220 of the
handle 212. The accommodating portion 249 is generally hollow and
is aligned with the finger 225a. As such, the accommodating portion
249 accommodates deflection of the finger 225a in the direction of
arrow D in FIG. 18, allowing the thickness of the remainder of the
handle 212 to be minimized.
[0039] With reference to FIG. 15, the illustrated utility knife 210
further includes a belt clip 251 coupled to the second handle
portion 215. The belt clip 251 is coupled to the second handle
portion 215 by a single fastener proximate a front end portion 218
of the handle 212. In other embodiments, the belt clip 251 may be
coupled to the handle 212 in other ways or orientations. In some
embodiments, the belt clip 251 may be reversible, such that it may
be coupled to either the first handle portion 213 or the second
handle portion 215. In the illustrated embodiment, the belt clip
251 substantially overlies the accommodating portion 249 such that
the accommodating portion 249 is disposed between the belt clip 251
and the remainder of the second handle portion 215.
[0040] Referring to FIG. 16, the blade holder 214 includes a front
end portion and a back end portion, opposite the front end portion.
The back end portion of the blade holder 214 includes a first notch
244 and a second notch 248. When the second portion 229 of the push
button 224 is received in the first notch 244, the blade holder 214
is held in the retracted position. When the second portion 229 of
the push button 224 is received in the second notch 248, the blade
holder 214 is held in the extended position. The blade holder 214
further includes a beveled surface 253 adjacent the second notch
248 (FIG. 17). The beveled surface 253 generally follows the
contour of the external surface 231 of the second portion 229. This
provides a relatively large contact area between the blade holder
214 and the push button 224, thereby producing a stronger, more
secure locking engagement.
[0041] In the illustrated embodiment, the blade holder 214 is made
from powdered metal, using a suitable powdered metal manufacturing
process. For example, the blade holder 214 may be produced by
compaction and sintering, metal injection molding (MIM), or any
other suitable process. By making the blade holder 214 from
powdered metal, the various complex features of the blade holder
214, such as the notches 248, 244 and the beveled surface 253, can
be integrally formed without requiring additional machining
steps.
[0042] Although the invention has been described in detail with
reference to certain preferred embodiments, variations and
modifications exist with the scope and spirit of one or more
independent aspects of the invention as described.
* * * * *