CA2169480A1 - Improved bolt cutter - Google Patents
Improved bolt cutterInfo
- Publication number
- CA2169480A1 CA2169480A1 CA 2169480 CA2169480A CA2169480A1 CA 2169480 A1 CA2169480 A1 CA 2169480A1 CA 2169480 CA2169480 CA 2169480 CA 2169480 A CA2169480 A CA 2169480A CA 2169480 A1 CA2169480 A1 CA 2169480A1
- Authority
- CA
- Canada
- Prior art keywords
- pair
- handles
- jaws
- bolt
- eccentric bushing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Abandoned
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B26—HAND CUTTING TOOLS; CUTTING; SEVERING
- B26B—HAND-HELD CUTTING TOOLS NOT OTHERWISE PROVIDED FOR
- B26B17/00—Hand cutting tools, i.e. with the cutting action actuated by muscle power with two jaws which come into abutting contact
- B26B17/02—Hand cutting tools, i.e. with the cutting action actuated by muscle power with two jaws which come into abutting contact with jaws operated indirectly by the handles, e.g. through cams or toggle levers
Abstract
An improved bolt cutter including a pair of jaws (44. 46) rotatable about a common axis with a pair of handles (56, 58) rotatably interconnected with the jaws. Each handle includes a boss which pivots about a common axis to operate the jaws between open and closed positions. An adjustment means to compensate for wear of the jaws and maintain the jaws in substantially face to face contact in the closed position includes a pair of eccentric bushings (70) disposed between the handle bosses on a common axis. The eccentric bushings include a plurality of protrusions (77) which engage complementary recess on the handle bosses to prevent rotation of the eccentric bushings with respect to the pair of handles.
Description
- _ 21 6q480 ~ PRO-ED BOLT Cl,~ER
BAC~;GROU?~I) This irl~,e.l~ion relates to an improved bolt cutting device of the tvpe comprising two jaws in face to face rPl~ionchip which are pivotally connPcse~ together and each having an end adapted S for co~nPrtion to a handle. Each of the jaws includes a bevelled cutting edge arranged to rotate toward and away from each other but not beyond each other in the same plane of rotation.
Operation of the handles causes the jaws to move between open and closed positions thereby severing the bolt or si-m-ilar elongate member placed therein.
These jaw ~csembliPs are co~ or. with bolt cutting devices wherein each of the jaws is mounted for rotation around its l~eCLi~e pivot pin or bolt. The pivot bolts are carried on a pair of straps, one strap on each flat side of the jaw pair. The handles are normally adjustable to perrnit the jaws to be adjusted to the correct position wherein there is a small clearance between the cutting edges of the jaws in the closed position.
Bolt cutting devices employing the jaw assemblies described above comprise a relatively large number of co.l,yone.lL~ which renders the assembly relatively complicated in terms of ~n~nl-f~rttlrin~ and assembly. The improved bolt cutter of the present invention overcomes the deficiPn~ iP5 of the prior art and provides a bolt cutter of less weight to ease manipulation and less parts to reduce ~ nre re~u.l~,lle.l~.
An example of a prior bolt cutter is the B. B. Brunosson U.S. Patent No. 3,gO6,631 which shows a jaw assembly for a bolt cutting device with a single pivot for the jaws.The M. Blanc U. S. Patent No. 3,949,473 discloses a bolt cutter with each jaw pivoted about its respective pin and mounted between parallel plates.
U. S. Patent No. 4,058,893 to A. Z Boyajian discloses a bolt cutter with one stationary jaw and a movable jaw actuated through a roller carn arrangement by one of the handles.
The A. ~ Boyajian U. S. Patent No. 4,249,308 discloses another bolt cutter with one stationary jaw and one movable jaw actuated by a carn roller and cam groove arranged to enable the carn groove to change its contour and thereby change the m-orh~nic~l advantage.
U. S. Patent No. 4,569,132 to R. A. Hill discloses a compound-action scroll snip which uses a plurality of washers as a friction reducing means berween pivoting members.
U. S. Patent No. 5,058,272 to G. J. Steube discloses a hydraulically powered bolt and cable cutter utilizing a scissor mech~nism to actuate the cuttar jaws.
SUI\~MARY
The improved bolt cutter includes a pair of jaws rotatable about a common axis with a pai~
of handles rotatably intercoMected with the jaws. Each handle includes a boss which pivoes about a cornmon axis to operate the jaws between open and closed positions. .~n ad)ustment means to 21 69480 ~
compensate for wear of the jaws and m~int~in the jaws in substantially face to &ce contact in the - closed position includes a pair of eccentric bushings disposed between the handle bosses on a collullon axis. The eccentric bushings include a plurality of protrusions which engage complementary recesses on the handle bosses to prevent rotation of the eccentric bushings with respect to the pair of handles when the handles are operated.
An object of the present invention is to provide an improved bolt cutter which minimi7Ps the number of components to reduce ~ f r~nce reqUi~
Another object of the present invention is to provide an ill,plove~ bolt cutter of less weight to ease manipulation.
BRIEF DESC~IPrION OF THE DR~WINGS
T,hese and other objects and advantages of the present invention are set forth below and further made clear by iefer~"~ce to the drawings, wherein:
Figure 1 is an plan view of a prior bolt cutter with each jaw pivoting about its respective pivot pin.
Figure 2 is an exploded view of the ~i~u~ed bolt cutter of the present invention.
Figure 3 is a plan view of the irnproved bolt cutter of the present invention.
Figure 4 is a cross-sec~ion~l view of the cutter head of Figure 3 taken along lines 1 4.
Figure 5 is a plan view of the underside of the eccentric bushing showing the offset of the bore with respect to the centPrline of the bushing.
Figure 6 is a cross-sectional view of the eccentric bushing of Figure 5 taken along lines 6-6.
DESCRIPIION OF THE PRE~:RRED EMBODIMEl~
With reference to Figure 1, a prior bolt cutter, denoted generally by numeral 10, is shown with the jaws closed. Jaws 12 and 14 are m~in~inPd in opposed relationship by flat plates or straps 16. Jaws 12 and 14 each pivot about their respective pivot bolts 18 and 20 when actuated by handles 22 and 24. Handles 22 and 24 are pivotally connPcte~ to jaws 12 and 14 by bolts 26 and 28 and are rotatable about pivot pin 30 on a co"~norl pivot axis. Compensation for the wear of jaws 12 and 14 is by means of adjustrnent bolt 32 in handle 24.
The improved bolt cutter, denoted generally by numeral 40, is shown in Fiaure 2 in an exploded view. Bolt cutter 40 includes cutter head 42 comprised of left jaw 44 and right jaw 46 which are interchangeable. Jaws 4. and 46 include beveled cutting edges 48 and 5û and are secured in opposing relationship by jaw bolt ~2 with thread locking compound, such as Loctite thereon, washers 53 and locking jaw nut 54. Handles 56 and 58 are interchangeable elongate members of a generally I shaped cross section formed of a suitable material as cast aluminum or 2 1 6 9 4 8 0 PCr~S9~/08s~s a zinc aluminum alloy. One end of handles 56 and 58 is enlarged with raised lip or StOp 60 forrned thereon to control the position of handles 56 and 58 in the closed position.
Adjacent stop 60 on each handle 56 and 58 are center pivot hole 62 and handle hole 64.
Handle holes 64 have wear bushings 65 positioned therein and are formed of a suitable wear S ll,Si~Lal~L material as steel. As seen more clearly in Figures 3 and 4, the rear portion of jaws 44 and 46 have holes 47 drilled thcr~ r.)ugh to receive handle bolts 66 with thread locking compound, such as Loctite thereon, which are closely received in steel bushing 65 in handle holes 64 to secure jaws 44 and 46 to handles 56 and 58 with lock nuts 67 and washers 67a. The side of center pivot hole 62 opposiLe handle StOpS 60 has a plura~ity of hemicphPrica] recesses 68 formed therein and evenly spaced c~cuu-~.e,lLially. Center pivot bushings 70 have comple.~ taly protrusions 72 formed thereon and an eccentrically drilled hole 74 therein as seen in greater detail in Figures 5 ar d 6.
Center pivot bushings 70 are assembled to handles 56 and 58 25 shown in Figures 2, 3 and 4 _nd secn~red tnerein by bolt 76 which is cross-drilled to receive locking pin 79 after castellated nut 78 is threaded thereon. In this position, protrusions 72 of center pivot bushings 70 engage complementar recesses 68 of handles 56 and 58 to prevent rotation of center pivot bushings 70 with respe~ to handles 56 and 58. Cushion grips 80 are installed on the rear portion of handles 56 and 58. During initial assembly and subsequent use, the O~ IU1II poSjtioning of cutting edges 48 and 50 is obtained as follows. With locking pin 79 removed, c~ctp1l~t~d nut 78 is loosened slightly on bolt 76 to allow center pivot bushings 70 to be moved away from handles 56 and 58 thereby dicPngaging pluL~usions 72 from recesses 68. This allows center pivot bushings 70 to be rotated which shifts the position of eccentric hole 74 to change the relative position between handles 56 and 58 and thereby adjust the gap between cutting edges 48 and 50. C~ctpll~tpd nut 78 is then re~ightene~ on bolt 76 and pin 79 reinstalled to prevent rotation of center pivot bushings 70 with respect to handles 56 and 58 as previously described.
r~e construction of our i~ luv~d bolt cutter and the methods of its applic~tion will be readily l~ndprstood from the foregoing description and it will be seen we have provided an improved bolt cutter which minimi~P5 the number of components to reduce ...~ rn~nre requireme~ts and provide an improved bolt cutter of less weight to ease manipulation.
Fur~hermore, while the i~vention has been shown and described with respect to certain prefe-led embodiments, i~ is obvious that equivalent alterations and modifications will occur to others skilled in the art upon the readin~ and undprst~nriing of the specification. The present invention includes all such e~uiv~lent alterations and modifications, and is limited only by the scope of the appended claims.
BAC~;GROU?~I) This irl~,e.l~ion relates to an improved bolt cutting device of the tvpe comprising two jaws in face to face rPl~ionchip which are pivotally connPcse~ together and each having an end adapted S for co~nPrtion to a handle. Each of the jaws includes a bevelled cutting edge arranged to rotate toward and away from each other but not beyond each other in the same plane of rotation.
Operation of the handles causes the jaws to move between open and closed positions thereby severing the bolt or si-m-ilar elongate member placed therein.
These jaw ~csembliPs are co~ or. with bolt cutting devices wherein each of the jaws is mounted for rotation around its l~eCLi~e pivot pin or bolt. The pivot bolts are carried on a pair of straps, one strap on each flat side of the jaw pair. The handles are normally adjustable to perrnit the jaws to be adjusted to the correct position wherein there is a small clearance between the cutting edges of the jaws in the closed position.
Bolt cutting devices employing the jaw assemblies described above comprise a relatively large number of co.l,yone.lL~ which renders the assembly relatively complicated in terms of ~n~nl-f~rttlrin~ and assembly. The improved bolt cutter of the present invention overcomes the deficiPn~ iP5 of the prior art and provides a bolt cutter of less weight to ease manipulation and less parts to reduce ~ nre re~u.l~,lle.l~.
An example of a prior bolt cutter is the B. B. Brunosson U.S. Patent No. 3,gO6,631 which shows a jaw assembly for a bolt cutting device with a single pivot for the jaws.The M. Blanc U. S. Patent No. 3,949,473 discloses a bolt cutter with each jaw pivoted about its respective pin and mounted between parallel plates.
U. S. Patent No. 4,058,893 to A. Z Boyajian discloses a bolt cutter with one stationary jaw and a movable jaw actuated through a roller carn arrangement by one of the handles.
The A. ~ Boyajian U. S. Patent No. 4,249,308 discloses another bolt cutter with one stationary jaw and one movable jaw actuated by a carn roller and cam groove arranged to enable the carn groove to change its contour and thereby change the m-orh~nic~l advantage.
U. S. Patent No. 4,569,132 to R. A. Hill discloses a compound-action scroll snip which uses a plurality of washers as a friction reducing means berween pivoting members.
U. S. Patent No. 5,058,272 to G. J. Steube discloses a hydraulically powered bolt and cable cutter utilizing a scissor mech~nism to actuate the cuttar jaws.
SUI\~MARY
The improved bolt cutter includes a pair of jaws rotatable about a common axis with a pai~
of handles rotatably intercoMected with the jaws. Each handle includes a boss which pivoes about a cornmon axis to operate the jaws between open and closed positions. .~n ad)ustment means to 21 69480 ~
compensate for wear of the jaws and m~int~in the jaws in substantially face to &ce contact in the - closed position includes a pair of eccentric bushings disposed between the handle bosses on a collullon axis. The eccentric bushings include a plurality of protrusions which engage complementary recesses on the handle bosses to prevent rotation of the eccentric bushings with respect to the pair of handles when the handles are operated.
An object of the present invention is to provide an improved bolt cutter which minimi7Ps the number of components to reduce ~ f r~nce reqUi~
Another object of the present invention is to provide an ill,plove~ bolt cutter of less weight to ease manipulation.
BRIEF DESC~IPrION OF THE DR~WINGS
T,hese and other objects and advantages of the present invention are set forth below and further made clear by iefer~"~ce to the drawings, wherein:
Figure 1 is an plan view of a prior bolt cutter with each jaw pivoting about its respective pivot pin.
Figure 2 is an exploded view of the ~i~u~ed bolt cutter of the present invention.
Figure 3 is a plan view of the irnproved bolt cutter of the present invention.
Figure 4 is a cross-sec~ion~l view of the cutter head of Figure 3 taken along lines 1 4.
Figure 5 is a plan view of the underside of the eccentric bushing showing the offset of the bore with respect to the centPrline of the bushing.
Figure 6 is a cross-sectional view of the eccentric bushing of Figure 5 taken along lines 6-6.
DESCRIPIION OF THE PRE~:RRED EMBODIMEl~
With reference to Figure 1, a prior bolt cutter, denoted generally by numeral 10, is shown with the jaws closed. Jaws 12 and 14 are m~in~inPd in opposed relationship by flat plates or straps 16. Jaws 12 and 14 each pivot about their respective pivot bolts 18 and 20 when actuated by handles 22 and 24. Handles 22 and 24 are pivotally connPcte~ to jaws 12 and 14 by bolts 26 and 28 and are rotatable about pivot pin 30 on a co"~norl pivot axis. Compensation for the wear of jaws 12 and 14 is by means of adjustrnent bolt 32 in handle 24.
The improved bolt cutter, denoted generally by numeral 40, is shown in Fiaure 2 in an exploded view. Bolt cutter 40 includes cutter head 42 comprised of left jaw 44 and right jaw 46 which are interchangeable. Jaws 4. and 46 include beveled cutting edges 48 and 5û and are secured in opposing relationship by jaw bolt ~2 with thread locking compound, such as Loctite thereon, washers 53 and locking jaw nut 54. Handles 56 and 58 are interchangeable elongate members of a generally I shaped cross section formed of a suitable material as cast aluminum or 2 1 6 9 4 8 0 PCr~S9~/08s~s a zinc aluminum alloy. One end of handles 56 and 58 is enlarged with raised lip or StOp 60 forrned thereon to control the position of handles 56 and 58 in the closed position.
Adjacent stop 60 on each handle 56 and 58 are center pivot hole 62 and handle hole 64.
Handle holes 64 have wear bushings 65 positioned therein and are formed of a suitable wear S ll,Si~Lal~L material as steel. As seen more clearly in Figures 3 and 4, the rear portion of jaws 44 and 46 have holes 47 drilled thcr~ r.)ugh to receive handle bolts 66 with thread locking compound, such as Loctite thereon, which are closely received in steel bushing 65 in handle holes 64 to secure jaws 44 and 46 to handles 56 and 58 with lock nuts 67 and washers 67a. The side of center pivot hole 62 opposiLe handle StOpS 60 has a plura~ity of hemicphPrica] recesses 68 formed therein and evenly spaced c~cuu-~.e,lLially. Center pivot bushings 70 have comple.~ taly protrusions 72 formed thereon and an eccentrically drilled hole 74 therein as seen in greater detail in Figures 5 ar d 6.
Center pivot bushings 70 are assembled to handles 56 and 58 25 shown in Figures 2, 3 and 4 _nd secn~red tnerein by bolt 76 which is cross-drilled to receive locking pin 79 after castellated nut 78 is threaded thereon. In this position, protrusions 72 of center pivot bushings 70 engage complementar recesses 68 of handles 56 and 58 to prevent rotation of center pivot bushings 70 with respe~ to handles 56 and 58. Cushion grips 80 are installed on the rear portion of handles 56 and 58. During initial assembly and subsequent use, the O~ IU1II poSjtioning of cutting edges 48 and 50 is obtained as follows. With locking pin 79 removed, c~ctp1l~t~d nut 78 is loosened slightly on bolt 76 to allow center pivot bushings 70 to be moved away from handles 56 and 58 thereby dicPngaging pluL~usions 72 from recesses 68. This allows center pivot bushings 70 to be rotated which shifts the position of eccentric hole 74 to change the relative position between handles 56 and 58 and thereby adjust the gap between cutting edges 48 and 50. C~ctpll~tpd nut 78 is then re~ightene~ on bolt 76 and pin 79 reinstalled to prevent rotation of center pivot bushings 70 with respect to handles 56 and 58 as previously described.
r~e construction of our i~ luv~d bolt cutter and the methods of its applic~tion will be readily l~ndprstood from the foregoing description and it will be seen we have provided an improved bolt cutter which minimi~P5 the number of components to reduce ...~ rn~nre requireme~ts and provide an improved bolt cutter of less weight to ease manipulation.
Fur~hermore, while the i~vention has been shown and described with respect to certain prefe-led embodiments, i~ is obvious that equivalent alterations and modifications will occur to others skilled in the art upon the readin~ and undprst~nriing of the specification. The present invention includes all such e~uiv~lent alterations and modifications, and is limited only by the scope of the appended claims.
Claims (21)
1. A device for cutting elongate members, comprising:
a pair of jaws rotatable about a first common axis, a pair of handles interconnected with said jaws and pivoting about a second common axis to operate said jaws between open and closed positions, and a means for adjustment including at least one eccentric bushing disposed on saidsecond common axis to compensate for wear of said pair of jaws and maintain said pair of jaws in substantially face to face contact in the closed position.
a pair of jaws rotatable about a first common axis, a pair of handles interconnected with said jaws and pivoting about a second common axis to operate said jaws between open and closed positions, and a means for adjustment including at least one eccentric bushing disposed on saidsecond common axis to compensate for wear of said pair of jaws and maintain said pair of jaws in substantially face to face contact in the closed position.
2. A device for cutting elongate members according to claim 1 wherein:
said at least one eccentric bushing includes a locking means to prevent rotation of said eccentric bushing with respect to said pair of handles when said handles are operated.
said at least one eccentric bushing includes a locking means to prevent rotation of said eccentric bushing with respect to said pair of handles when said handles are operated.
3. A device for cutting elongate members according to claim 2 wherein said locking means includes:
a plurality of protrusions on said at least one eccentric bushing, a plurality of recesses on at least one of said pair of handles, and a means for interconnecting said pair of handles and said at least one eccentricbushing whereby said at least one eccentric bushing is prevented from rotating with respect to said pair of handles when said handles are operated.
a plurality of protrusions on said at least one eccentric bushing, a plurality of recesses on at least one of said pair of handles, and a means for interconnecting said pair of handles and said at least one eccentricbushing whereby said at least one eccentric bushing is prevented from rotating with respect to said pair of handles when said handles are operated.
4. A device for cutting elongate members according to claim 3 wherein said means for interconnecting said pair of handles and said at least one eccentric bushing is a bolt and nut.
5. A device for cutting elongate members according to claim 3 wherein said pair of handles includes stop means to control the closed position of said pair of jaws.
6. A device for cutting elongate members according to claim 5 wherein said pair of handles are of a substantially I shaped cross section.
7. A device for cutting elongate members according to claim 6 wherein said pair of handles includes a pair of cushion grips positioned thereon.
8. A bolt cutter, comprising:
a pair of jaws rotatably connected about a first common axis with a cutting edgeformed at one end of each jaw, said cutting edges arranged to move toward and away from each other but not beyond each other in the same plane of rotation, each of said pair of jaws having an unthreaded hole therethrough at the end of said jaw opposite said cutting edge;
the end of each of said jaws opposite said cutting edge form a pivotable connection with each of said pair of handles, said handles rotatable about a second common axis to operate said pair of jaws between open and closed positions;
said pivotable connection between each of said pair of jaws and each of said pair of handles including a wear bushing in said handle, a bolt with a threaded end with thread locking compound thereon, a locking nut and a plurality of washers;
each of said bolts with thread locking compound thereon extending through said hole in said jaw and through said wear bushing in said handle, said plurality of washers disposed on said bolt between said handle and said locking nut, said locking nut engaging said threaded end of said bolt so as to draw said jaw and said handle together; and a means for adjustment of said jaws including at least one eccentric bushing coaxially disposed between said pair of handles on said second common axis to compensate for wear of said pair of jaws and maintain said pair of jaws in substantially face to face contact in the closed position.
a pair of jaws rotatably connected about a first common axis with a cutting edgeformed at one end of each jaw, said cutting edges arranged to move toward and away from each other but not beyond each other in the same plane of rotation, each of said pair of jaws having an unthreaded hole therethrough at the end of said jaw opposite said cutting edge;
the end of each of said jaws opposite said cutting edge form a pivotable connection with each of said pair of handles, said handles rotatable about a second common axis to operate said pair of jaws between open and closed positions;
said pivotable connection between each of said pair of jaws and each of said pair of handles including a wear bushing in said handle, a bolt with a threaded end with thread locking compound thereon, a locking nut and a plurality of washers;
each of said bolts with thread locking compound thereon extending through said hole in said jaw and through said wear bushing in said handle, said plurality of washers disposed on said bolt between said handle and said locking nut, said locking nut engaging said threaded end of said bolt so as to draw said jaw and said handle together; and a means for adjustment of said jaws including at least one eccentric bushing coaxially disposed between said pair of handles on said second common axis to compensate for wear of said pair of jaws and maintain said pair of jaws in substantially face to face contact in the closed position.
9. A bolt cutter according to claim 8 wherein:
said at least one eccentric bushing includes a locking means to prevent rotation of said eccentric bushing with respect to said pair of handles when said handles are operated.
said at least one eccentric bushing includes a locking means to prevent rotation of said eccentric bushing with respect to said pair of handles when said handles are operated.
10. A bolt cutter according to claim 9 wherein said locking means includes:
a plurality of protrusions on said at least one eccentric bushing;
a plurality of complementary recesses on at least one of said pair of handles;
said plurality of protrusions on said at least one eccentric bushing engaging said plurality of recesses on at least one of said pair of handles to prevent said at least one eccentric bushing from rotating with respect to said pair of handles when said handles are operated; and, a means for interconnecting said pair of handles and said at least one eccentricbushing.
a plurality of protrusions on said at least one eccentric bushing;
a plurality of complementary recesses on at least one of said pair of handles;
said plurality of protrusions on said at least one eccentric bushing engaging said plurality of recesses on at least one of said pair of handles to prevent said at least one eccentric bushing from rotating with respect to said pair of handles when said handles are operated; and, a means for interconnecting said pair of handles and said at least one eccentricbushing.
11. A bolt cutter according to claim 10 wherein said means for interconnecting said pair of handles and said at least one eccentric bushing includes a bolt with a threaded end having a cross-drilled hole adjacent said threaded end, a castellated nut, and a locking pin, said castellated nut engaging said threaded end of said bolt so as to draw said at least one eccentric bushing and said handles together, and said locking pin inserted in said cross-drilled hole.
12. A bolt cutter according to claim 11 wherein said pair of handles includes bosses formed thereon to prevent the cutting edges on said pair of jaws from moving beyond each other.
13. A bolt cutter according to claim 12 wherein said pair of handles are of a substantially I
shaped cross section.
shaped cross section.
14. A bolt cutter according to claim 13 wherein said pair of handles includes a pair of cushion grips positioned thereon.
15. A bolt cutter according to claim 9 wherein said locking means includes:
a plurality of protrusions on at least one of said pair of handles;
a plurality of complementary recesses on said at least one eccentric bushing;
said plurality of recesses on said at least one eccentric bushing engaging said plurality of protrusions on at least one of said pair of handles to prevent said at least one eccentric bushing from rotating with respect to said pair of handles when said handles are operated; and a means for interconnecting said pair of handles and said at least one eccentricbushing.
a plurality of protrusions on at least one of said pair of handles;
a plurality of complementary recesses on said at least one eccentric bushing;
said plurality of recesses on said at least one eccentric bushing engaging said plurality of protrusions on at least one of said pair of handles to prevent said at least one eccentric bushing from rotating with respect to said pair of handles when said handles are operated; and a means for interconnecting said pair of handles and said at least one eccentricbushing.
16. A bolt cutter according to claim 15 wherein said means for interconnecting said pair of handles and said at least one eccentric bushing includes a bolt with a threaded end having a cross-drilled hole adjacent said threaded end, a castellated nut, and a locking pin, said castellated nut engaging said threaded end of said bolt so as to draw said at least one eccentric bushing and said handles together, and said locking pin inserted in said cross-drilled hole.
17. A bolt cutter according to claim 16 wherein said pair of handles includes bosses formed thereon to prevent the cutting edges on said pair of jaws from moving beyond each other.
18. A bolt cutter according to claim 17 wherein said pair of handles are of a substantially I
shaped cross section.
shaped cross section.
19. A bolt cutter according to claim 18 wherein said pair of handles includes a pair of cushion grips positioned thereon.
20. A bolt cutter according to claim 8 wherein said wear bushing is formed from steel.
21. A bolt cutter according to claim 8 wherein said wear bushing is formed from high strength plastic.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US10525993A | 1993-08-12 | 1993-08-12 | |
| US08/105,259 | 1993-08-12 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2169480A1 true CA2169480A1 (en) | 1995-02-23 |
Family
ID=22304850
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2169480 Abandoned CA2169480A1 (en) | 1993-08-12 | 1994-08-08 | Improved bolt cutter |
Country Status (3)
| Country | Link |
|---|---|
| AU (1) | AU7522094A (en) |
| CA (1) | CA2169480A1 (en) |
| WO (1) | WO1995005271A1 (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE9900656L (en) * | 1999-02-25 | 2000-01-24 | Kapman Ab | Adjustable bolt cutter |
| US6493943B1 (en) * | 2000-06-30 | 2002-12-17 | Fiskars Consumer Oy Ab | Cutting tool, particularly hedge shears |
| US7191525B2 (en) | 2003-10-08 | 2007-03-20 | Brailovskiy Aleksandr M | Two-stage attachment for cutting, crimping etc, and mechanical method thereof |
| FR2876932B1 (en) * | 2004-10-22 | 2009-05-08 | Mob Outil Sa | BOLT CUTTING TYPE CUTTING DEVICE |
| EP3845348A1 (en) | 2015-12-10 | 2021-07-07 | Milwaukee Electric Tool Corporation | Bolt cutter |
| US10905488B2 (en) * | 2016-01-27 | 2021-02-02 | Pacific Instruments, Inc. | Multiple fulcrum cutter |
| US11745326B2 (en) | 2018-03-30 | 2023-09-05 | Milwaukee Electric Tool Corporation | Bolt cutter |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US520896A (en) * | 1894-06-05 | Bolt-clippers | ||
| US3372478A (en) * | 1965-09-20 | 1968-03-12 | Wallace Mfg | Lopping shears with a compound action |
-
1994
- 1994-08-08 AU AU75220/94A patent/AU7522094A/en not_active Abandoned
- 1994-08-08 CA CA 2169480 patent/CA2169480A1/en not_active Abandoned
- 1994-08-08 WO PCT/US1994/008939 patent/WO1995005271A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO1995005271A1 (en) | 1995-02-23 |
| AU7522094A (en) | 1995-03-14 |
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