Utility knife

Information

  • Patent Grant
  • 10144139
  • Patent Number
    10,144,139
  • Date Filed
    Tuesday, March 29, 2016
    8 years ago
  • Date Issued
    Tuesday, December 4, 2018
    6 years ago
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.
Description
BACKGROUND

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

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 blade holder 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.


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.


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.


Other aspects of the invention will become apparent by consideration of the detailed description and accompanying drawings.





BRIEF DESCRIPTION OF THE DRAWINGS


FIG. 1 is a perspective view of a utility knife according to an embodiment of the invention.



FIG. 2 is an alternative perspective view of the utility knife of FIG. 1.



FIG. 3 is a perspective view of the utility knife of FIG. 1 with a blade holder in the extended position.



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.



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.



FIG. 6 is a side view of the utility knife of FIG. 1 with the blade holder in the partially extended position.



FIG. 7 is a cross-sectional view of the utility knife of FIG. 1, taken along line 7-7 in FIG. 1.



FIG. 8 is a bottom view of the utility knife of FIG. 1.



FIG. 9 is an exploded view of a portion of the utility knife of FIG. 1.



FIG. 10 is a perspective view of a utility knife according to another embodiment of the invention.



FIG. 11 is an alternative perspective view of the utility knife of FIG. 10.



FIG. 12 is a perspective view of the utility knife of FIG. 10 with a blade holder in the extended position.



FIG. 13 is an alternative perspective view of the utility knife of FIG. 10 with the blade holder in the extended position.



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.



FIG. 15 is a perspective view of a utility knife according to another embodiment of the invention.



FIG. 16 is a partially-exploded view of a portion of the utility knife of FIG. 15.



FIG. 17 is a perspective view of a blade holder of the utility knife of FIG. 15.



FIG. 18 is an enlarged cross-sectional view of the utility knife of FIG. 15, taken along line 18-18 in FIG. 15.





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


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.


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.


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.


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.


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 B in 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.


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.


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.


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).


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.



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.



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.


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.


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.


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.


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.


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.


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.

Claims
  • 1. A utility knife comprising: 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 handle further including a cam surface;a blade;a first blade holder, the blade removably coupled to the first blade holder, the first blade holder 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; anda spare blade holder including a recess configured to receive a spare blade, the spare blade holder 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,wherein 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.
  • 2. The utility knife of claim 1, wherein the spare blade holder includes a front end and a back end opposite the front end, wherein the spare blade holder is pivotally coupled to the handle adjacent the back end of the spare blade holder, and wherein the cam surface of the spare blade holder is located at the front end of the spare blade holder.
  • 3. The utility knife of claim 1, wherein the handle further includes a front end portion and a back end portion opposite the front end portion, and wherein the first blade holder is pivotally coupled to the handle adjacent the front end portion and the spare blade holder is pivotally coupled to the handle adjacent the back end portion.
  • 4. The utility knife of claim 3, wherein the spare blade holder pivots through the slot and past the bottom side of the handle to pivot from the closed position to the open position.
  • 5. The utility knife of claim 1, wherein the first blade holder includes an enlarged portion that inhibits the spare blade holder from moving to the open position when the first blade holder is in the folded position.
  • 6. The utility knife of claim 5, wherein the first blade holder includes a top edge and a bottom edge, wherein the bottom edge is received within the slot when the first blade holder is in the folded position and the top edge is at least partially located outside of the slot when the first bladed holder is in the folded position, and wherein the enlarged portion extends from the top edge.
  • 7. The utility knife of claim 1, wherein the first blade holder is positioned adjacent the first longitudinal side of the handle when in the folded position, and wherein the spare blade holder is positioned adjacent the second longitudinal side of the handle when in the closed position.
  • 8. The utility knife of claim 1, wherein 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 away from the first blade holder.
  • 9. The utility knife of claim 1, wherein the recess of the spare blade holder is configured to receive at least four spare blades.
  • 10. The utility knife of claim 1, further comprising a ball engageable with the spare blade holder when the spare blade holder is in the closed position to retain the spare blade holder in the closed position.
  • 11. The utility knife of claim 1, wherein the cam surface of the spare blade holder extends at an oblique angle relative to the second longitudinal side.
  • 12. The utility knife of claim 1, wherein the cam surface of the spare blade holder defines an angle with an axis extending perpendicular to the second longitudinal side, and wherein the angle is between about 5 degrees and about 30 degrees.
CROSS-REFERENCE TO RELATED APPLICATIONS

This application claims priority U.S. Provisional Application No. 62/222,918, filed Sep. 24, 2015, U.S. Provisional Application No. 62/180,238, filed Jun. 16, 2015, U.S. Provisional Application No. 62/141,966, filed Apr. 2, 2015, the entire contents of which are hereby incorporated by reference herein.

US Referenced Citations (254)
Number Name Date Kind
23975 Belcher May 1859 A
226910 Fkiebertshauser Apr 1880 A
645563 Heath Mar 1900 A
1599604 Wetmore Sep 1926 A
1701027 Brown Feb 1929 A
1769093 Wuesthoff Jul 1930 A
1803899 Fuller May 1931 A
1940855 Friedman Dec 1933 A
2017320 Mercer Oct 1935 A
2051721 Kriangelos Aug 1936 A
2052741 Bersted Sep 1936 A
2628423 Cuntz Feb 1953 A
2679100 Ehler May 1954 A
2709299 Vizza May 1955 A
2814108 Bassett Nov 1957 A
2839831 Baer Jun 1958 A
3171201 Carifi Mar 1965 A
3651571 Neale Mar 1972 A
3845554 Joanis et al. Nov 1974 A
3906625 Gringer Sep 1975 A
4068375 Rathbun et al. Jan 1978 A
4240201 Sawby et al. Dec 1980 A
4292738 Osada Oct 1981 A
4347665 Glesser Sep 1982 A
4541175 Boyd et al. Sep 1985 A
4551917 Walker Nov 1985 A
4660284 Decarolis Apr 1987 A
4670984 Rickard Jun 1987 A
4706385 Iten Nov 1987 A
4713884 Dunnagan Dec 1987 A
4730394 Sonner, Jr. Mar 1988 A
4750267 Boyd Jun 1988 A
4773159 Casazza, Jr. Sep 1988 A
D299413 DeCarolis Jan 1989 S
4901439 Boyd, Jr. Feb 1990 A
4918820 Korb et al. Apr 1990 A
4922614 Machida May 1990 A
4936014 Shaanan et al. Jun 1990 A
5029354 Boyd, Jr. et al. Jul 1991 A
5092045 Boyd, Jr. et al. Mar 1992 A
5299357 Wonderley et al. Apr 1994 A
5325588 Rogers Jul 1994 A
5327651 Favreau Jul 1994 A
5379492 Glesser Jan 1995 A
5386632 Schmidt Feb 1995 A
5425175 Rogers Jun 1995 A
5513405 Bradbury, Jr. et al. May 1996 A
5546662 Seber et al. Aug 1996 A
5561906 Desmarais Oct 1996 A
5572793 Collins et al. Nov 1996 A
5613300 Schmidt Mar 1997 A
5704129 Glesser Jan 1998 A
5722168 Huang Mar 1998 A
5755035 Weatherly May 1998 A
5794346 Seber et al. Aug 1998 A
5815927 Collins Oct 1998 A
5819414 Marifone Oct 1998 A
5822866 Pardue Oct 1998 A
5890294 Keklak et al. Apr 1999 A
5964036 Centofante Oct 1999 A
6101724 Halligan Aug 2000 A
6192589 Martone et al. Feb 2001 B1
D439492 Martone et al. Mar 2001 S
6249975 Lin Jun 2001 B1
6276063 Chen Aug 2001 B1
6305085 Stallegger et al. Oct 2001 B1
6314646 Schmidt Nov 2001 B1
6321454 Wass Nov 2001 B1
6415514 Chun Jul 2002 B1
6430816 Neveux Aug 2002 B2
6446340 Ping Sep 2002 B1
6446341 Wang et al. Sep 2002 B1
6513246 Ping Feb 2003 B2
6553671 Blanchard Apr 2003 B2
6553672 Glesser et al. Apr 2003 B2
6553674 Budrow Apr 2003 B1
6574872 Roberts et al. Jun 2003 B2
6578221 Ping Jun 2003 B2
6591504 Onion Jul 2003 B2
6678958 Budrow Jan 2004 B1
6688003 Scarla Feb 2004 B2
6688407 Etter et al. Feb 2004 B2
6694558 Ping Feb 2004 B2
6711820 Chen Mar 2004 B2
6732436 Moizis May 2004 B2
6735872 Chang May 2004 B1
6742260 Hsu Jun 2004 B1
6745478 DeLillo Jun 2004 B2
6763592 Yu Jul 2004 B2
D494437 Scarla Aug 2004 S
D495939 Ping Sep 2004 S
6813833 Saunders et al. Nov 2004 B2
6829827 Tseng Dec 2004 B2
6845561 Timson Jan 2005 B2
6845694 Ping Jan 2005 B2
D501782 Ping Feb 2005 S
6862764 Ping Mar 2005 B2
6886257 Chih May 2005 B2
6915577 Scala Jul 2005 B2
D510250 Ping Oct 2005 S
6951055 Collins Oct 2005 B1
6957491 Van Deursen et al. Oct 2005 B2
6968622 Ping Nov 2005 B2
7000323 Hatcher Feb 2006 B1
D516403 Ping Mar 2006 S
D517893 Ping Mar 2006 S
7007392 Ping Mar 2006 B2
D519019 Ping Apr 2006 S
7040022 Ping May 2006 B2
D523317 Ryan et al. Jun 2006 S
7055407 Gringer et al. Jun 2006 B2
7059053 Sakai Jun 2006 B2
D524138 Chih Jul 2006 S
D526878 Ping Aug 2006 S
D528895 Ping Sep 2006 S
7107685 Anderson Sep 2006 B1
7107686 Linn et al. Sep 2006 B2
7121005 Hughes Oct 2006 B2
7131204 Brown et al. Nov 2006 B2
7134207 Ping Nov 2006 B2
7181849 Menter Feb 2007 B2
7185435 Tseng Mar 2007 B1
D539628 Ping Apr 2007 S
D541128 Farland Apr 2007 S
D545165 Ping Jun 2007 S
7231718 Outen Jun 2007 B2
D552955 Ping Oct 2007 S
D553467 Ryan Oct 2007 S
7278213 Pardue et al. Oct 2007 B2
7284329 King Oct 2007 B1
7293360 Steigerwalt et al. Nov 2007 B2
7296354 Van Deursen et al. Nov 2007 B2
7302760 Lake Dec 2007 B2
7305729 Dehner Dec 2007 B2
7305768 Hinderer Dec 2007 B2
7313866 Linn et al. Jan 2008 B2
7325312 Janich Feb 2008 B1
7346988 Gringer et al. Mar 2008 B2
D566222 Hawk et al. Apr 2008 S
D568136 Ping May 2008 S
7367089 Cooke et al. May 2008 B2
7380341 Ping Jun 2008 B2
7389587 Di Bitonto et al. Jun 2008 B2
7409766 Steigerwalt Aug 2008 B2
D581240 Glesser et al. Oct 2008 S
7437822 Flagg et al. Oct 2008 B2
7451545 Vörös Nov 2008 B2
D583899 MacNair et al. Dec 2008 S
D584123 Lopano Jan 2009 S
D584125 Ping Jan 2009 S
D584377 MacNair et al. Jan 2009 S
7480997 Ping Jan 2009 B2
D588433 van Deursen Mar 2009 S
7513045 Kain Apr 2009 B2
D592034 Huang May 2009 S
D593838 Williams Jun 2009 S
D596914 Huang Jul 2009 S
7555839 Koelewyn Jul 2009 B2
7565747 Cobb et al. Jul 2009 B2
D599433 Zore Sep 2009 S
7634858 Frazer Dec 2009 B1
D607707 Huang Jan 2010 S
7647701 Mollick Jan 2010 B1
7676932 Grice Mar 2010 B2
7698821 Ralph Apr 2010 B2
7739799 Van Deursen Jun 2010 B2
7748122 Duey Jul 2010 B2
7752759 Perreault Jul 2010 B2
7774940 Frank Aug 2010 B2
7797836 Ranieri et al. Sep 2010 B2
7814664 LeBlanc et al. Oct 2010 B2
D629274 Wu Dec 2010 S
7913397 van Deursen Mar 2011 B2
7946201 Frazer May 2011 B2
7979990 Hawk et al. Jul 2011 B2
8006389 Jennings et al. Aug 2011 B2
8028419 VanHoy Oct 2011 B2
8069569 Brown et al. Dec 2011 B2
8099870 Ralph Jan 2012 B1
8099871 Bilenski Jan 2012 B2
D654343 Wu Feb 2012 S
8112894 Caswell Feb 2012 B2
8161653 Nenadic Apr 2012 B2
8171645 Duey May 2012 B2
8186065 Onion May 2012 B2
8201336 De Jun 2012 B2
8286356 Mollick et al. Oct 2012 B1
D670551 Bublitz et al. Nov 2012 S
8375589 Bremer et al. Feb 2013 B2
8413337 Price Apr 2013 B2
D686901 Bublitz et al. Jul 2013 S
D686902 Hyma et al. Jul 2013 S
8549754 Bung et al. Oct 2013 B2
8567070 Rowlay et al. Oct 2013 B2
D696567 Leh et al. Dec 2013 S
8621753 Price Jan 2014 B2
D703510 Hyma Apr 2014 S
D703590 Futschik et al. Apr 2014 S
8683703 Rowlay et al. Apr 2014 B2
8793881 Rowlay et al. Aug 2014 B2
8959779 Wen Feb 2015 B2
D741680 Hunter et al. Oct 2015 S
20020029480 Lin Mar 2002 A1
20020066187 Jennings Jun 2002 A1
20020157260 Cheng Oct 2002 A1
20030037444 Chunn Feb 2003 A1
20030213133 Hanna Nov 2003 A1
20040103541 Scarla Jun 2004 A1
20040107585 Helmrich Jun 2004 A1
20050022390 Whitemiller Feb 2005 A1
20050044717 Tomio Mar 2005 A1
20050150115 Hanna Jul 2005 A1
20050155226 Van Deursen et al. Jul 2005 A1
20050172497 Linn et al. Aug 2005 A1
20050193566 Brown et al. Sep 2005 A1
20050223567 Cobb et al. Oct 2005 A1
20050283983 Huang Dec 2005 A1
20060005397 Steigerwalt Jan 2006 A1
20060008041 Kim et al. Jan 2006 A1
20060026844 Ping Feb 2006 A1
20060053631 Fossella Mar 2006 A1
20060080841 Hatcher et al. Apr 2006 A1
20060137190 Van Deursen et al. Jun 2006 A1
20070056169 Cheng Mar 2007 A1
20070169353 Wu Jul 2007 A1
20070169354 Ralph Jul 2007 A1
20070256304 Pardue et al. Nov 2007 A1
20070294896 Brown et al. Dec 2007 A1
20080110029 Ryan et al. May 2008 A1
20080172884 Cheng Jul 2008 A1
20080201953 Bremer et al. Aug 2008 A1
20080216326 Klecker et al. Sep 2008 A1
20080235954 Radle Oct 2008 A1
20080250650 Seber et al. Oct 2008 A1
20080276462 Kao Nov 2008 A1
20080301907 Chunlung Dec 2008 A1
20080301949 Enga et al. Dec 2008 A1
20090013537 Kao Jan 2009 A1
20090217533 Kao Sep 2009 A1
20090255127 Seymour Oct 2009 A1
20100175267 Seber et al. Jul 2010 A1
20100180449 Van Deursen Jul 2010 A1
20100281696 Hao Nov 2010 A1
20110067246 Perez Mar 2011 A1
20120023753 Wen Feb 2012 A1
20120066910 Shantha Mar 2012 A1
20120144677 Chang Jun 2012 A1
20120159789 Frazer Jun 2012 A9
20120174412 Ho Jul 2012 A1
20120234142 Onion Sep 2012 A1
20120304472 Medhurst Dec 2012 A1
20130255002 Keers et al. Oct 2013 A1
20140373364 Li Dec 2014 A1
20150082641 Wang Mar 2015 A1
Foreign Referenced Citations (1)
Number Date Country
2105412 Apr 1972 FR
Non-Patent Literature Citations (3)
Entry
Milwaukee Fastback(TM) Flip Utility Knife. Downloaded at http://grainer.com/Grainger/MILWAUKEE-Flip-Utility-Knife-6CMY2 on Jun. 8, 2012 (2 pages).
Notice of Allowance from the United States Patent and Trademark Office for U.S. Appl. No. 29/530,343 dated Jul. 15, 2016 (9 pages).
Notice of Allowance from the United States Patent and Trademark Office for U.S. Appl. No. 29/530,349 dated Jun. 24, 2016 (9 pages).
Related Publications (1)
Number Date Country
20160288344 A1 Oct 2016 US
Provisional Applications (3)
Number Date Country
62222918 Sep 2015 US
62180238 Jun 2015 US
62141966 Apr 2015 US