US3276296A - Torque wrench - Google Patents
Torque wrench Download PDFInfo
- Publication number
- US3276296A US3276296A US399497A US39949764A US3276296A US 3276296 A US3276296 A US 3276296A US 399497 A US399497 A US 399497A US 39949764 A US39949764 A US 39949764A US 3276296 A US3276296 A US 3276296A
- Authority
- US
- United States
- Prior art keywords
- head
- push rod
- torque
- load
- plunger
- 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
Links
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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
- B25B23/00—Details of, or accessories for, spanners, wrenches, screwdrivers
- B25B23/14—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers
- B25B23/142—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers
- B25B23/1422—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters
- B25B23/1427—Arrangement of torque limiters or torque indicators in wrenches or screwdrivers specially adapted for hand operated wrenches or screwdrivers torque indicators or adjustable torque limiters by mechanical means
Definitions
- the present invention relates generally to wrenches and more particularly to a new and novel torque Wrench.
- Torque-limiting wrenches have found wide applications in many industries.
- these torque-limiting wrenches include a load-engaging member and a spring which resists the movement of the load-engaging member until the desired limited amount of torque is applied to the load thereby.
- the application of such limited amount of torque to the load through the load-engaging of the wrench to undergo movement from its original position against the force an indication that the desired limited amount of torque ⁇ has been applied to the load. It is a major object of the present invention to provide a torque wrench which is particularly adapted for ⁇ inaccuracy of this nature can only be applied by the
- FIGURE 1 is a perspective View of a preferred form of torque wrench embodying the present invention
- FIGURE 2 is a side elevational View in reduced scale showing the wrench of FIGURE l, together with a workengaging attachment;
- FIGURE 3 is a vertical sectional view .taken in enlarged scale along line 3-3 of FIGURE 2;
- FIGURE 4 is a vertical sectional View taken on line 4-4 of FIGURE 3;
- FIGURE 5 is a top engaging attachment
- FIGURE 6 is a vertical sectional view taken in enlarged s'cale along line 6-6 of FIGURE 2;
- FIGURE 7 is a vertical sectional view taken on line 7-7 of FIGURE 6;
- FIGURE 8 is a vertical sectional 8-8 of FIGURE 6;
- FIGURE 9 is a fragmentary horizontal sectional view similar to FIGURE 6 showing the mode of operation of said wrench.
- a preferred form of torque wrench embodying the present invention broadly cemprises a head, generally designated 10, a tubular body, generally designated 12, extending away from the rear of the head, a tubular handheld, generally designated 14, en the rear portion of the tubular body, a plunger 16 longitudinally slidably disposed within the front portion plan View of said wrench and Work- View ltaken on line of the body 12, a spring 18 that constantly biases the plunger i6 forwardly, a push red 20' transversely slidably carried within the heal 10, .and a pivot 22 interposed between the rear of the push rod 20 and the front of the plunger 16.
- the front portion of the head 10 is formed with ya load-engaging member 24. Torque is applied to the load-engaging member 24 by moving the body 12 in either a clockwise or a counter-clockwise direction from its position of FIGURES 1 and 6.
- the head 10 is integrally formed on the front of the body 12.
- the interior of the head 1t) includes a longitudinal or axial passage 26 which forms a forward continuation of the passage 27 of the tubular body 12, as indicated particularly in FIGURE 6.
- the head 10 is also formed with a transverse, horizontally extending passage 28 that intersects the front end of the axial passage 26.
- the load-engaging member 24 is integral with the forward portion of the head 10 and takes the form of .
- a rectangular boss of square cross-section tion 'of the interior yof the body 12 is formed with internal threads 32.
- the threads 32 are engaged with complementary external threads 36 formed on an axially extending handhold support 3S.
- the handheld support 38 includes a cylindrical boss 40 whereon ⁇ are formed the external threads 36 and a rearwardly extending pest 42.
- the rear portion of the post 42 is keyed te the handheld 14 by means of a set screw 44 carried by the rear wall ⁇ 45 of the handheld.
- the handheld 14 includes a ferwardly extending barrel 416 that overlies the rear portion of the body 12, the front end of the handheld being open.
- the plunger 16 is axially slidably disposed within the front porti-on of the body passage 18 is of spiral a dish-like spacer handheld boss 40. 16 is formed with a uration with its longitudinal axis normal to that of the rod 20 is formed at its rear-center portion with a forwardly extending ⁇ depression 52 com- 53 wherein are disposed a pair of like rollers mid-portion of the push rod aperture a forwardly extending rib 56 that maintalns rollers 54 54.
- scaler markings 58 formed on the body 12, as shown in FIGURE l. These markings 57 and 58 may constitute Vernier graduations reading in inch-ounces.
- the load engaging boss 24 of the aferedescribed wrench is adapted work-engaging attachments.
- the adapter 62 Forwardly of the socket 64 the adapter 62 is formed with an axial passage 68 wherein is positioned the rear portion of a drive 70.
- the downwardly extending front end 72 of the drive 70 is disposable within a complementary socket formed on a member (not shown) that is to be rotated with a predetermined amount of torque.
- the drive 70 is removably secured to adapter 62 by a suitable spring element 74.
- a suitable work-engaging attachment such as that designated 611 in FIGURE 2 is applied to the load-engaging boss 24 formed at the front of the head 10.
- the handhold 14 is rotated upon the rear portion of the body 12 until the desired reading is obtained on the markings 57 and 58.
- the drive 70 of work-engaging attachment 60 is then engaged with the work to be rotated.
- the operator places the opposite sides of the push rod Z between his index linger and thumb, as indicated in FIGURE 5.
- the operator urges the entire asembly in such direction by means of the push rod 20.
- the push rod 20 will be restrained from transverse movement in the direction of wrench movement by the spring 18 acting through plunger 16 and pivot 22.
- the torque being applied by the wrench through attachment 60 reaches the selected predetermined magnitude the push rod 20 will break in the direction of wrench movement, as shown in FIGURE 9, the pivot 22 pivoting within depressions 50 and 52 as the plunger 16 compresses spring 18.
- rollers 54 minimizes the friction developed between push rod 20 and head thereby affording great accuracy.
- the aforedescribed wrench may be utilized to apply torque in a counter-clockwise direction.
- a torque wrench for applying a predetermined magnitude of torque to a load comprising:
- a body having a head at its front portion, said head being formed with a load-engaging member
- a push rod transversely slidably carried by said head, said push rod being employed to rotate said body and thereby apply torque to said load;
- a plunger axially slidably carried by said body rearwardly of said head;
- a torque wrench for applying a predetermined magnitude of torque to a load comprising:
- a head on the front portion of said body said head being formed with an axial passage connected with the axial passage of said body and with a transverse passage intersecting the axial passage of said head;
- a push rod transversely slidably carried by the transverse passage of said head, said push r-od being ernployed to rotate said body and thereby apply torque to said head;
- a plunger axially slidably carried within the axial pas* sage of said body rearwardly of said head;
- resilient means interposed between the rear portion of said body and said plunger for constantly urging the latter forwardly relative to said body, said resilient means being disposed within the axial pas sage of said body;
Description
Claims (1)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US399497A US3276296A (en) | 1964-09-28 | 1964-09-28 | Torque wrench |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US399497A US3276296A (en) | 1964-09-28 | 1964-09-28 | Torque wrench |
Publications (1)
Publication Number | Publication Date |
---|---|
US3276296A true US3276296A (en) | 1966-10-04 |
Family
ID=23579741
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US399497A Expired - Lifetime US3276296A (en) | 1964-09-28 | 1964-09-28 | Torque wrench |
Country Status (1)
Country | Link |
---|---|
US (1) | US3276296A (en) |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3640141A (en) * | 1969-12-19 | 1972-02-08 | Hollingsead Pryor Enterprises | Extractor holddown apparatus |
US4248107A (en) * | 1979-08-17 | 1981-02-03 | Dresser Industries, Inc. | Adjusting torque wrench |
US4535659A (en) * | 1983-11-02 | 1985-08-20 | Yang Tai Her | Torque limiting wrench with an audio alarm |
WO1994004321A1 (en) * | 1992-08-25 | 1994-03-03 | Sandvik Ab | Tool with moment indication |
WO1994005463A1 (en) * | 1992-08-31 | 1994-03-17 | Sandvik Ab | Lockable spring tightening device |
US6463834B2 (en) | 2000-10-05 | 2002-10-15 | The Stanley Works | Torque wrench |
US20040020337A1 (en) * | 2002-07-05 | 2004-02-05 | Chuck Chang | Wrench having a safety device |
US20050172763A1 (en) * | 2003-07-05 | 2005-08-11 | Chuck Chang | Wrench having a safety device |
US20070039432A1 (en) * | 2005-08-18 | 2007-02-22 | Cutler Brian J | Torque-Indicating Driver and Method |
US20120174379A1 (en) * | 2009-12-03 | 2012-07-12 | Teper Boris R | Method and apparatus for applying preset torque values to fasteners |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2172561A (en) * | 1939-09-12 | Wrench | ||
US2820381A (en) * | 1956-04-04 | 1958-01-21 | Kent Moore Organization Inc | Reversible, torque-limiting wrench |
US3016773A (en) * | 1958-12-12 | 1962-01-16 | Woods Robert Glen | Predetermined torque release wrench |
-
1964
- 1964-09-28 US US399497A patent/US3276296A/en not_active Expired - Lifetime
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2172561A (en) * | 1939-09-12 | Wrench | ||
US2820381A (en) * | 1956-04-04 | 1958-01-21 | Kent Moore Organization Inc | Reversible, torque-limiting wrench |
US3016773A (en) * | 1958-12-12 | 1962-01-16 | Woods Robert Glen | Predetermined torque release wrench |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3640141A (en) * | 1969-12-19 | 1972-02-08 | Hollingsead Pryor Enterprises | Extractor holddown apparatus |
US4248107A (en) * | 1979-08-17 | 1981-02-03 | Dresser Industries, Inc. | Adjusting torque wrench |
US4535659A (en) * | 1983-11-02 | 1985-08-20 | Yang Tai Her | Torque limiting wrench with an audio alarm |
US5435190A (en) * | 1992-08-25 | 1995-07-25 | Sandvik Ab | Tool with moment indication |
WO1994004321A1 (en) * | 1992-08-25 | 1994-03-03 | Sandvik Ab | Tool with moment indication |
US5546816A (en) * | 1992-08-31 | 1996-08-20 | Sandvick Ab | Lockable spring tightening device |
WO1994005463A1 (en) * | 1992-08-31 | 1994-03-17 | Sandvik Ab | Lockable spring tightening device |
US6463834B2 (en) | 2000-10-05 | 2002-10-15 | The Stanley Works | Torque wrench |
US20040020337A1 (en) * | 2002-07-05 | 2004-02-05 | Chuck Chang | Wrench having a safety device |
US20050172763A1 (en) * | 2003-07-05 | 2005-08-11 | Chuck Chang | Wrench having a safety device |
US7117772B2 (en) * | 2003-07-05 | 2006-10-10 | Chuck Chang | Wrench having a safety device |
US20070039432A1 (en) * | 2005-08-18 | 2007-02-22 | Cutler Brian J | Torque-Indicating Driver and Method |
US20120174379A1 (en) * | 2009-12-03 | 2012-07-12 | Teper Boris R | Method and apparatus for applying preset torque values to fasteners |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
AS | Assignment |
Owner name: K-D MANUFACTURING COMPANY, A CORP. OF PA. Free format text: MERGER;ASSIGNOR:K-D TOOLS OF CALIFORNIA, INC.;REEL/FRAME:003869/0644 Effective date: 19810625 |
|
AS | Assignment |
Owner name: COMMONWEALTH NATIONAL BANK, P.O. BOX 1010, HARRISB Free format text: CONDITIONAL ASSIGNMENT;ASSIGNOR:K-D MANUFACTURING COMPANY, A PA CORP.;REEL/FRAME:003885/0768 Effective date: 19810407 Owner name: HAMILTON BANK, MORGAN GUARANTY TRUST COMPANY OF NE Free format text: CONDITIONAL ASSIGNMENT;ASSIGNOR:K-D MANUFACTURING COMPANY, A PA CORP.;REEL/FRAME:003885/0768 Effective date: 19810407 |
|
AS | Assignment |
Owner name: K-D MANUFACTURING COMPANY, 3575 HEMPLAND ROAD, LAN Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:K-D TOOLS OF CALIFORNIA, INC. A CORP. OF DE;REEL/FRAME:003945/0701 Effective date: 19820108 |
|
AS | Assignment |
Owner name: K-D MANUFACTURING COMPANY, Free format text: RELEASED BY SECURED PARTY;ASSIGNORS:HAMILTON BANK;MORGAN GUARANTY TRUST COMPANY OF NEW YORK;COMMONWEALTH NATIONAL BANK, THE;REEL/FRAME:004059/0136 Effective date: 19820128 Owner name: K-D MANUFACTURING COMPANY, PENNSYLVANIA Free format text: RELEASED BY SECURED PARTY;ASSIGNORS:HAMILTON BANK;MORGAN GUARANTY TRUST COMPANY OF NEW YORK;COMMONWEALTH NATIONAL BANK, THE;REEL/FRAME:004059/0136 Effective date: 19820128 |
|
AS | Assignment |
Owner name: FIRST NATIONAL BANK OF BOSTON Free format text: SECURITY INTEREST;ASSIGNOR:EASCO CORPORATION;REEL/FRAME:004572/0975 Effective date: 19860626 |
|
AS | Assignment |
Owner name: BANCBOSTON FINANCIAL COMPANY, 100 FEDERAL STREET, Free format text: SECURITY INTEREST;ASSIGNOR:EASCO HAND TOOLS, INC. A MA CORP;REEL/FRAME:004641/0855 Effective date: 19860812 Owner name: FIRST NATIONAL BANK OF BOSTON THE, 100 FEDERAL STR Free format text: SECURITY INTEREST;ASSIGNOR:EASCO HAND TOOLS, INC. A MA CORP;REEL/FRAME:004641/0855 Effective date: 19860812 Owner name: BANCBOSTON FINANCIAL COMPANY, MASSACHUSETTS Free format text: SECURITY INTEREST;ASSIGNOR:EASCO HAND TOOLS, INC. A MA CORP;REEL/FRAME:004641/0855 Effective date: 19860812 Owner name: FIRST NATIONAL BANK OF BOSTON THE, MASSACHUSETTS Free format text: SECURITY INTEREST;ASSIGNOR:EASCO HAND TOOLS, INC. A MA CORP;REEL/FRAME:004641/0855 Effective date: 19860812 |