US2666352A - Resilient vise-jaw faceplate having magnetic insert of lesser thickness - Google Patents
Resilient vise-jaw faceplate having magnetic insert of lesser thickness Download PDFInfo
- Publication number
- US2666352A US2666352A US217588A US21758851A US2666352A US 2666352 A US2666352 A US 2666352A US 217588 A US217588 A US 217588A US 21758851 A US21758851 A US 21758851A US 2666352 A US2666352 A US 2666352A
- Authority
- US
- United States
- Prior art keywords
- pad
- vise
- jaw
- face
- magnet
- 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.)
- Expired - Lifetime
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B1/00—Vices
- B25B1/24—Details, e.g. jaws of special shape, slideways
- B25B1/2405—Construction of the jaws
- B25B1/2452—Construction of the jaws with supplementary jaws
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10S7/00—Compound tools
- Y10S7/901—Magnetic feature
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/23—Chucks or sockets with magnetic or electrostatic means
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/34—Accessory or component
- Y10T279/3456—Padded or cushioned jaw
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T279/00—Chucks or sockets
- Y10T279/34—Accessory or component
- Y10T279/3462—Jaw insert
Definitions
- This invention relates to improvements ina resilient vise-jaw face-plate having -magnetic insert of lesser thickness and, more particularly, to an elastic or resilient vise jaw facing element or the like.
- Figure 1 is a perspective view of resilient vise jaw pad according to my invention
- Figure 2 illustrates the application of a pair of jaw pads to the jaws of a vise
- Figure 3 is an enlarged fragmentary detailed sectional view through a portion of a pair of vise jaws equipped with my pads and showing the action during gripping of workpiece;
- Figure 4 illustrates in perspective a magnet employed in my vise jaw pad
- Figure 5 is a rear view of modified form of elastic pad
- Figure 6 is a vertical sectional view of a pad as shown in Figure 5.
- FIG 2 I have there shown a vise of conventional structure having the usual stationary jaw l0 and movable jaw 12 that moves toward and away from the other jaw by means of the screw bar l4 when manually manipulated by the cross rod I6.
- the gripping face of each of the jaws I 0 and i2 is provided with a rubber or resilient pad I 8 of the type more clearly seen in Figure 1.
- Each pad l8 comprises a gripping face that may be geometrically grooved as shown, or otherwise roughened, to provide a degree of frictional contact thereon when brought against a'workpiece.
- one edge 22 is desginated the upper edge and the edges at right angles thereto are the ends 24, 24.
- Such magnets as are most useful for my purposes are the aluminum-nickel-cobalt type sometimes more concisely described as permanent magnets.
- the jaw pad l8 of Figures 5 and 6 is similar in all respects to that of Figure 1 except that a single magnet is employed and in this instance the magnet 26 is located in the pad centrally between the ends but nearer one edge than the other. Usually the magnet is nearer the upper edge 22' than it is the lower pad edge. By this arrangement a single magnet attaches the pad to a vise jaw where it tends to depend in a balanced condition.
- the forward end of the opening in the gripping face should be coextensive with the magnet so that the rubber surrou'ndhig the magnet may Ebe compressed but with none overlying the magnet to cause a too-tight grip on an object at the risk of marring highly polished surfaces.
- An elastic facing for vise jaws comprising". a pad of resilient rubber-like material shaped to fewer the wcrmgripping face ef a wise ijaw and mating a through ripening extending from face to face tlcie're'of, having fa magnet positinned linsaiil through opening, d magnet being 50f a thickness less than the thickness of said pad and :being disposed E1151 said pad :s'c that one face f the magnet is :fl'ush with the face of the padt'to be disp'oseda'gzair-i's't the avork gi'ipping face of a vise .:jaw and the other :face iQf'EdhQ magnet underlying :the plane of the work-gripping face of the pad, the nompressibili-ty of :said lresil ient pad material Ybeing such that under compression in a mammal work-
- each jawysaid-pad being formed of resilient material and being shaped to substantially cover the Work-gripping face of the jaw and having a through opening extending from face to face (thereof, and having a magnet positioned in said through opening, :said magnet being of a thickness less than the thickness of said pad and being disposed i-n said pad so that one face of the magnet is .flush with the face of the pad which is disposed against the work-gripping face of the companion vise jaw and the other face of the magnet underlying the plane of the work-gripping face :of the pad, the compressibility of :said resilientpad material being such that under compression :-in a :normal work-gripping -operation its thickness will be greater than the thickness of said magnet whereby only the pad material is pressed to the work being gripped.
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Magnetic Treatment Devices (AREA)
Description
R. T. PHILIPS 4 2,666,352 RESILIENT VISE-JAW FACEPLATE HAVING MAGNETIC INSERT OF LESSER THICKNESS Filed March 26, 1951 Jan. 19, 1954,
"am u I m L ..o.. mm m m P 0 D R M. l R
. of the disclosure made in the Patented Jan. 19, 1954 RESILIENT VISE-JAW FACEPLATE HAVING MAGNETIC INSERT OF LESSER THICK- NESS Richard T. Philips, Seattle, Wash.
Application March 26, 1951, Serial No. 217,588
This invention relates to improvements ina resilient vise-jaw face-plate having -magnetic insert of lesser thickness and, more particularly, to an elastic or resilient vise jaw facing element or the like.
It is among the more important objects of this invention to provide a resilient or elastic vise jaw pad, which is easily constructed at low cost, and which is extremely simple to'attach to a vise jaw or remove therefrom, without the use of tools, .or,any particular skill on the part of the user; which will preclude thelmarring of work being gripped therebetween when used in pairs and which is not easily displaced from the point of use under the normal conditions attendant upon the 'vises use; which will accommodate irregularities in both the vise jaw faces and the 7 work to be gripped; and which even through embodying substantial attaching means will not mar a workpiece applied therebetween.
These and. other objects of this invention will be apparent during the course of the following specification of the invention when taken in view attached drawing in which: a
Figure 1 is a perspective view of resilient vise jaw pad according to my invention;
Figure 2 illustrates the application of a pair of jaw pads to the jaws of a vise; Figure 3 is an enlarged fragmentary detailed sectional view through a portion of a pair of vise jaws equipped with my pads and showing the action during gripping of workpiece;
Figure 4 illustrates in perspective a magnet employed in my vise jaw pad;
Figure 5 is a rear view of modified form of elastic pad; and
Figure 6 is a vertical sectional view of a pad as shown in Figure 5.
Referring to Figure 2, I have there shown a vise of conventional structure having the usual stationary jaw l0 and movable jaw 12 that moves toward and away from the other jaw by means of the screw bar l4 when manually manipulated by the cross rod I6. The gripping face of each of the jaws I 0 and i2 is provided with a rubber or resilient pad I 8 of the type more clearly seen in Figure 1.
Each pad l8 comprises a gripping face that may be geometrically grooved as shown, or otherwise roughened, to provide a degree of frictional contact thereon when brought against a'workpiece. Preferably one edge 22 is desginated the upper edge and the edges at right angles thereto are the ends 24, 24.
, .4 Claims. (Cl. 81-38) Intermediate the ends and sides of the pad [8 is provided a pair of magnets 26, 26 spaced apart from each other in a symmetrical manner and so arranged in the pad that they lie with their gripping faces in the same plane as the rear face 28 of the pad. These magnets are 7 more fully shown in. the enlarged perspective view of Figure 4 to comprise a cylindrical body 30 that is laterally grooved at 32 to provide pole pieces 34,- 34 the faces of which are preferably co-planar with the rear face of the pad l8.
Such magnets as are most useful for my purposes are the aluminum-nickel-cobalt type sometimes more concisely described as permanent magnets.
In using the cylindrical form, for attachment of the magnets within the pads, I form passages 21, 2! through the pad into which the magnets are pressed. By arranging that the thickness of the pad is greater than the thickness of the magnet body and its pole pieces, it will be seen that the gripping faces of the magnet 26 can be flush with the rear face 28 of the pad while the other magnet face underlies the gripping or work-contacting face of the pad. That condition is shown in Figures 1, 3 and 6, and the reason for it lies in the fact that when the vise jaws are closed upon a workpiece, as W in Figure 3, the latter will be gripped by the pad material but not between opposed magnets under ordinary conditions and thereby marring of the workpiece is avoided.
The jaw pad l8 of Figures 5 and 6 is similar in all respects to that of Figure 1 except that a single magnet is employed and in this instance the magnet 26 is located in the pad centrally between the ends but nearer one edge than the other. Usually the magnet is nearer the upper edge 22' than it is the lower pad edge. By this arrangement a single magnet attaches the pad to a vise jaw where it tends to depend in a balanced condition.
In the manufacture of vise jaw pads as described herein, it will be readily apparent that not only a variety of designs'may be applied to the work-contacting face but that the face may also be smooth for particular uses. It has been my experience that the rougher faces are preferable for hard to grip workpieces whereas with easy to grip objects not having a polished surface, and thus not slippery, a smooth face is preferable. I do not thereby intend to be limited to a particular treatment of the gripping face of my vise attachment. However, it is important that the openings 21 into which the magnets 25 are placed should extend from face to face in the pad. At the rear face the opening must be coextensive with the size of the magnet so that the gripping face of the latter can be disposed flush with this rear face of the pad. Likewise the forward end of the opening in the gripping face should be coextensive with the magnet so that the rubber surrou'ndhig the magnet may Ebe compressed but with none overlying the magnet to cause a too-tight grip on an object at the risk of marring highly polished surfaces.
It will be apparent to those skilled in the .art that this disclosure may be altered and :changed without departing from the reasonable modifications and equivalents as come within the function and scope of the invention set forth' in the 'cla ims hereafter.
What is claimed is:
1. An elastic facing for vise jaws, comprising". a pad of resilient rubber-like material shaped to fewer the wcrmgripping face ef a wise ijaw and mating a through ripening extending from face to face tlcie're'of, having fa magnet positinned linsaiil through opening, d magnet being 50f a thickness less than the thickness of said pad and :being disposed E1151 said pad :s'c that one face f the magnet is :fl'ush with the face of the padt'to be disp'oseda'gzair-i's't the avork gi'ipping face of a vise .:jaw and the other :face iQf'EdhQ magnet underlying :the plane of the work-gripping face of the pad, the nompressibili-ty of :said lresil ient pad material Ybeing such that under compression in a mammal work-gripping nperation its thick ness ab'e greater than the thickness .of said magnet whereby only the pad material is pressed to the work being :gripped.
2. The combination :according to rclaim 11 in which 'there are at :least two through ripen-sings 4 and magnets and they are arranged in the pad in spaced apart relation longitudinally of the pad.
3. The combination according to claim 1 in which the magnet is centrally located between the ends of the pad and disposed nearer one edge than the other.
4. The combination of a pair of opposed vise jaws and a removable facing pa'd positioned on each jawysaid-pad being formed of resilient material and being shaped to substantially cover the Work-gripping face of the jaw and having a through opening extending from face to face (thereof, and having a magnet positioned in said through opening, :said magnet being of a thickness less than the thickness of said pad and being disposed i-n said pad so that one face of the magnet is .flush with the face of the pad which is disposed against the work-gripping face of the companion vise jaw and the other face of the magnet underlying the plane of the work-gripping face :of the pad, the compressibility of :said resilientpad material being such that under compression :-in a :normal work-gripping -operation its thickness will be greater than the thickness of said magnet whereby only the pad material is pressed to the work being gripped.
ERICH-ARD T. PHILIPS.
References Cited in the file of this patent UNITED STAJIES PATENTS Number Name 1 Date 1723,5118 .Ellison Mar. 524, I903 .;906;507 Canedy Dec. '15, 1908 5.2362314 I'IrOjB -v s Aug. 7, 1 91 7 154E300 Lo'omis June-29, '920 12 ;8gl1,3ik6 Fest Feb. 51, 21 944 22,519,107 .Brown e Aug. 15,1950 2,606,470 Kinney l JAug. I2, 1952
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US217588A US2666352A (en) | 1951-03-26 | 1951-03-26 | Resilient vise-jaw faceplate having magnetic insert of lesser thickness |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US217588A US2666352A (en) | 1951-03-26 | 1951-03-26 | Resilient vise-jaw faceplate having magnetic insert of lesser thickness |
Publications (1)
Publication Number | Publication Date |
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US2666352A true US2666352A (en) | 1954-01-19 |
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Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US217588A Expired - Lifetime US2666352A (en) | 1951-03-26 | 1951-03-26 | Resilient vise-jaw faceplate having magnetic insert of lesser thickness |
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Cited By (26)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2740310A (en) * | 1954-04-09 | 1956-04-03 | George C Larsen | Hold-down and support magnetically attachable to vise jaw |
US2764047A (en) * | 1954-02-01 | 1956-09-25 | Allbritton Roy | Screw-actuated vise having replaceable fixed and movable jaws |
US2818095A (en) * | 1955-07-26 | 1957-12-31 | Edward H Stahl | Clamping device |
US2827651A (en) * | 1955-10-06 | 1958-03-25 | James V Rizk | Holder for surface cleaning means |
US2827706A (en) * | 1955-11-17 | 1958-03-25 | United Shoe Machinery Corp | Magnetic gage blocks |
US2861349A (en) * | 1956-03-19 | 1958-11-25 | Carl L Olson | Saw filing gauge |
US2977849A (en) * | 1958-10-23 | 1961-04-04 | Alexander A Wassel | Optical element holder assembly |
US3065960A (en) * | 1959-10-29 | 1962-11-27 | Miller Pattern And Mfg Company | Magnetic jaw liners |
US3109242A (en) * | 1959-10-22 | 1963-11-05 | Ernest S Nyitrai | Work-locating means for machine tool work holders |
US3353218A (en) * | 1964-07-06 | 1967-11-21 | Cloud Machine Corp | Apparatus for changing the size of plastic film cupping die of packaging machine |
US3370490A (en) * | 1966-08-05 | 1968-02-27 | Marshall H. Feldman | Adjustable wrench |
US3593985A (en) * | 1969-06-03 | 1971-07-20 | Tanner James C Jun | Carrier for a skin graft patch |
US3833210A (en) * | 1971-03-22 | 1974-09-03 | J Kotter | Pipe holding attachment for c-clamps and vises |
EP0141893A1 (en) * | 1983-10-14 | 1985-05-22 | Vereinigte Filzfabriken AG | Auxiliary jaw for vices |
US4623157A (en) * | 1982-09-13 | 1986-11-18 | Oerlikon-Boehringer Gmbh | Jaw for chucking devices |
US4892295A (en) * | 1988-12-07 | 1990-01-09 | Keller Jeanne N | Paper cutting assist |
US4989313A (en) * | 1989-12-28 | 1991-02-05 | General Motors Corporation | Magnetic alignment fixture |
US5313754A (en) * | 1993-01-28 | 1994-05-24 | Manufacturing Technologies, Inc. | Magnetic corner protector |
US5338045A (en) * | 1992-10-16 | 1994-08-16 | Yang Tai Her | Device for application of mechanical and magnetic forces to a fixture |
US5711515A (en) * | 1996-02-05 | 1998-01-27 | Kabushiki Kaisha Nishimura Jig | Workpiece support for vise |
US6029964A (en) * | 1998-05-20 | 2000-02-29 | Bohl; Larry | Clamp with swivel pads |
US6152435A (en) * | 1998-07-31 | 2000-11-28 | Lloyd D. Snell | Multi-diameter vise clamp and collet jaw |
US20060033089A1 (en) * | 2004-08-10 | 2006-02-16 | Shinn Fu Corporation | Lifting mechanism and spacer block arrangement for lifting jack |
GB2489031A (en) * | 2011-03-17 | 2012-09-19 | Peter John Cummings | Attachable face pads for clamps |
EP2524767A2 (en) | 2011-05-20 | 2012-11-21 | C.R.M. di Mazzoccato Arturo & Figli S.r.l. | Device for covering the jaws of a vice |
US11472005B2 (en) | 2019-12-09 | 2022-10-18 | Henry Wang | Clamp head adapter |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US723518A (en) * | 1902-10-04 | 1903-03-24 | W T Ellison & Company Ltd | Drawing-board and t-square. |
US906507A (en) * | 1908-06-02 | 1908-12-15 | William E Canedy | Vise-head. |
US1236234A (en) * | 1917-03-30 | 1917-08-07 | Oscar R Troje | Toy building-block. |
US1344700A (en) * | 1918-11-25 | 1920-06-29 | Evarts G Loomis | Device for inserting crystals in bezels and rings |
US2340316A (en) * | 1941-11-03 | 1944-02-01 | Herman P Fest | Elastic attachment for vise jaws |
US2519107A (en) * | 1946-09-19 | 1950-08-15 | Wayne B Brown | Cushioning device for c-clamps |
US2606470A (en) * | 1950-07-19 | 1952-08-12 | Clair R Kinney | Versatile vise jaw |
-
1951
- 1951-03-26 US US217588A patent/US2666352A/en not_active Expired - Lifetime
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US723518A (en) * | 1902-10-04 | 1903-03-24 | W T Ellison & Company Ltd | Drawing-board and t-square. |
US906507A (en) * | 1908-06-02 | 1908-12-15 | William E Canedy | Vise-head. |
US1236234A (en) * | 1917-03-30 | 1917-08-07 | Oscar R Troje | Toy building-block. |
US1344700A (en) * | 1918-11-25 | 1920-06-29 | Evarts G Loomis | Device for inserting crystals in bezels and rings |
US2340316A (en) * | 1941-11-03 | 1944-02-01 | Herman P Fest | Elastic attachment for vise jaws |
US2519107A (en) * | 1946-09-19 | 1950-08-15 | Wayne B Brown | Cushioning device for c-clamps |
US2606470A (en) * | 1950-07-19 | 1952-08-12 | Clair R Kinney | Versatile vise jaw |
Cited By (27)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2764047A (en) * | 1954-02-01 | 1956-09-25 | Allbritton Roy | Screw-actuated vise having replaceable fixed and movable jaws |
US2740310A (en) * | 1954-04-09 | 1956-04-03 | George C Larsen | Hold-down and support magnetically attachable to vise jaw |
US2818095A (en) * | 1955-07-26 | 1957-12-31 | Edward H Stahl | Clamping device |
US2827651A (en) * | 1955-10-06 | 1958-03-25 | James V Rizk | Holder for surface cleaning means |
US2827706A (en) * | 1955-11-17 | 1958-03-25 | United Shoe Machinery Corp | Magnetic gage blocks |
US2861349A (en) * | 1956-03-19 | 1958-11-25 | Carl L Olson | Saw filing gauge |
US2977849A (en) * | 1958-10-23 | 1961-04-04 | Alexander A Wassel | Optical element holder assembly |
US3109242A (en) * | 1959-10-22 | 1963-11-05 | Ernest S Nyitrai | Work-locating means for machine tool work holders |
US3065960A (en) * | 1959-10-29 | 1962-11-27 | Miller Pattern And Mfg Company | Magnetic jaw liners |
US3353218A (en) * | 1964-07-06 | 1967-11-21 | Cloud Machine Corp | Apparatus for changing the size of plastic film cupping die of packaging machine |
US3370490A (en) * | 1966-08-05 | 1968-02-27 | Marshall H. Feldman | Adjustable wrench |
US3593985A (en) * | 1969-06-03 | 1971-07-20 | Tanner James C Jun | Carrier for a skin graft patch |
US3833210A (en) * | 1971-03-22 | 1974-09-03 | J Kotter | Pipe holding attachment for c-clamps and vises |
US4623157A (en) * | 1982-09-13 | 1986-11-18 | Oerlikon-Boehringer Gmbh | Jaw for chucking devices |
EP0141893A1 (en) * | 1983-10-14 | 1985-05-22 | Vereinigte Filzfabriken AG | Auxiliary jaw for vices |
US4892295A (en) * | 1988-12-07 | 1990-01-09 | Keller Jeanne N | Paper cutting assist |
US4989313A (en) * | 1989-12-28 | 1991-02-05 | General Motors Corporation | Magnetic alignment fixture |
US5338045A (en) * | 1992-10-16 | 1994-08-16 | Yang Tai Her | Device for application of mechanical and magnetic forces to a fixture |
US5313754A (en) * | 1993-01-28 | 1994-05-24 | Manufacturing Technologies, Inc. | Magnetic corner protector |
US5711515A (en) * | 1996-02-05 | 1998-01-27 | Kabushiki Kaisha Nishimura Jig | Workpiece support for vise |
US6029964A (en) * | 1998-05-20 | 2000-02-29 | Bohl; Larry | Clamp with swivel pads |
US6152435A (en) * | 1998-07-31 | 2000-11-28 | Lloyd D. Snell | Multi-diameter vise clamp and collet jaw |
US20060033089A1 (en) * | 2004-08-10 | 2006-02-16 | Shinn Fu Corporation | Lifting mechanism and spacer block arrangement for lifting jack |
US7237762B2 (en) * | 2004-08-10 | 2007-07-03 | Shinn Fu Corporation | Lifting mechanism and spacer block arrangement for lifting jack |
GB2489031A (en) * | 2011-03-17 | 2012-09-19 | Peter John Cummings | Attachable face pads for clamps |
EP2524767A2 (en) | 2011-05-20 | 2012-11-21 | C.R.M. di Mazzoccato Arturo & Figli S.r.l. | Device for covering the jaws of a vice |
US11472005B2 (en) | 2019-12-09 | 2022-10-18 | Henry Wang | Clamp head adapter |
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