US3728916A - Flexible strap wrench - Google Patents

Flexible strap wrench Download PDF

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Publication number
US3728916A
US3728916A US00152515A US3728916DA US3728916A US 3728916 A US3728916 A US 3728916A US 00152515 A US00152515 A US 00152515A US 3728916D A US3728916D A US 3728916DA US 3728916 A US3728916 A US 3728916A
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United States
Prior art keywords
cam member
strap
support
arcuate surface
cam
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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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US00152515A
Inventor
J Brantley
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Caterpillar Inc
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Caterpillar Tractor Co
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Publication date
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Application granted granted Critical
Publication of US3728916A publication Critical patent/US3728916A/en
Assigned to CATERPILLAR INC., A CORP. OF DE. reassignment CATERPILLAR INC., A CORP. OF DE. ASSIGNMENT OF ASSIGNORS INTEREST. Assignors: CATERPILLAR TRACTOR CO., A CORP. OF CALIF.
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B25B13/00—Spanners; Wrenches
    • B25B13/48—Spanners; Wrenches for special purposes
    • B25B13/50—Spanners; Wrenches for special purposes for operating on work of special profile, e.g. pipes
    • B25B13/52—Chain or strap wrenches

Definitions

  • ABSTRACT A strap wrench for grasping and rotating articles, such as cylindrical spin-on filters, comprises a support, a cam member rotatably mounted in the support and a flexible strap having one end attached to the cam member and a second end threaded therethrough.
  • An arcuate surface is formed on the support to abut and substantially conform to outer cylindrical surface portions of the rotated article. Such arcuate surface cooperates with the strap to grasp the article, upon rotation of the cam member, to uniformly distribute a torquing force therearound and to prevent damage thereto.
  • Damage to the filters shell during removal thereof may be sufficiently severe to prevent the wrench from gripping the filter.
  • the service man normally drives a bar or heavy screwdriver through the filter and cranks same to break it loose. This procedure is inconvenient, time-consuming and allows uncontrolled escape of fuel or oil.
  • An object of this invention is to overcome the above described problems by providing an economical and efficient strap wrench adapted to expeditiously grasp and rotate cylindrical articles, such as spin-on filters, without causing damage thereto.
  • the strap wrench comprises a support having a cam member rotatably mounted thereon and a flexible strap having one end attached to the cam member.
  • the support has an arcuate surface formed on a base thereof which substantially conforms to the periphery of the article.
  • the cam member when rotated, cooperates with the strap to uniformly distribute a torquing force around the article and to prevent damage thereto.
  • FIG. 1 is a top plan view of a flexible strap wrench embodiment of the present invention
  • FIG. 2 is a side elevational view ofthe strap wrench
  • FIG. 3 is a sectional view of the strap wrench, but il- Iustrating the wrench as it would appear during the installation ofa spin-on replacement filter;
  • FIG. 4 is a view similar to FIG. 3, but illustrating the strap wrench as it would appear during the removal ofa spent filter.
  • the illustrated strap wrench embodiment essentially comprises a support 10, having a cam member 11 rotatably mounted therein, and a flexible strap 12 attached at one end thereof to the cam member.
  • the U-shaped support (FIG. 2) comprises spaced upstanding legs 13 and 14, secured together by means of an intermediate base plate 15.
  • the plate defines an arcuate surface 16 thereon, subscribed by a radius having its center at point X in FIG. 1, which faces away from the support and in general concave relationship thereto.
  • arcuate surface 16 preferably corresponds to the largest filter diameter in the series for which the wrench is to be used. The full accommodation of the largest diameter provides for a slight deflection of the shell of the smaller filters, without damage, so that they will assume the shape of arcuate surface 16. Arcuate surface 16 thus provides for the servicing of a wide range of filter sizes, while yet assuring maximum possible surface contact between the arcuate surface and the filters.
  • the contact area provided by the strap wrench of this invention is substantially larger than the contact areas which are occasioned by conventional strap wrenches.
  • arcuate surface 16 cooperates with strap 12 to substantially fully circumvent and distribute a torquing force around the filter whereas prior art constructions normally concentrate high torquing forces at small areas on the filter.
  • angle a defining the arcuate surface is preferably selected from the approximate range of from 30 to e.g. 65 as shown.
  • Cam member 11 comprises a pair of laterally spaced cylindrical bearing portions 17 and 18 rotatably mounted in bores formed in legs 13 and 14, respectively. Snap rings 19 and 20 are suitably positioned in annular grooves formed on the cam member to prevent axial movement thereof.
  • the bearing portions are connected together by an intermediate cam means 21 which is offset radially with respect to a central rotational axis Y of the cam member.
  • An elongated pin 22 is secured to legs 17 and 18 of the cam member to attach the looped and stitched first end of flexible strap 12 thereto. It should be noted that the pin is offset with respect to axis Y and preferably diametrically opposed with respect to cam means 21 to provide a slot therebetween adapted to receive a second, free end of the strap therethrough.
  • the strap preferably comprises an elongated, flat band constructed of a flexible and durable woven fabric such as nylon.
  • the strap has a high tensile strength, but yet exhibits sufficient flexibility to envelope and frictionally grasp the exterior surface of a cylindrical article, such as a spin-on filter F illustrated in FIGS. 3 and 4.
  • the strap wrench is shown in its operative position for installing a spin-on filter F.
  • the workman positions arcuate surface 16 in abutting relationship with the filter.
  • the free end of strap 12 is then manually threaded through the slot defined between cam means 21 and pin 22 (FIG. 1) and semi-tightened.
  • a square socket 23 is formed in each of bearing portions 17 and 18 of the cam member to accommodate a mating torquing tool.
  • cam means 21 and pin 22 Upon clockwise rotation of the tool and cam member about axis Y in FIG. 3,cam means 21 and pin 22 will rotate, as shown, to shorten the effective length of the strap portions forming a circular continuation of arcuate surface 16. Once the filter is grasped snuggly, the entire strap wrench is moved clockwise about axis X to tighten the filter a predetermined amount.
  • FIG. 4 illustrates the removal of a spent filter F by reversing the above described sequence of operation.
  • cam member 11 is rotated in a counterclockwise direction to shorten the strap and to grasp the filter by applying a substantially uniform torquing force therearound.
  • a strap wrench for grasping and rotating cylindrical articles comprising a support including means defining a substantial arcuate surface thereon, facing away from said support in general concave relationship thereto, generally conforming to the outer diameter of an article to be rotated,
  • cam member rotatably mounted about a central axis thereof in said support, including cam means
  • an elongated flexible strap having an end attached to said cam member said cam means and the position whereat said strap is attached to said cam member being spaced on said cam member to define a slot therebetween adapted to receive a second, free end of said strap therethrough.
  • said support is U'shaped to comprise a base defining said arcuate surface thereon and spaced legs having said cam member rotatably mounted therein.
  • cam member comprises spaced, cylindrical bearing portions each rotatably mounted in a respective one of said legs and means for preventing axial movement of said cam member relative to said central axis and said support.
  • arcuate surface is defined by an angle selected from the approximate range of from 30 to

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Agricultural Machines (AREA)
  • Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

A strap wrench for grasping and rotating articles, such as cylindrical spin-on filters, comprises a support, a cam member rotatably mounted in the support and a flexible strap having one end attached to the cam member and a second end threaded therethrough. An arcuate surface is formed on the support to abut and substantially conform to outer cylindrical surface portions of the rotated article. Such arcuate surface cooperates with the strap to grasp the article, upon rotation of the cam member, to uniformly distribute a torquing force therearound and to prevent damage thereto.

Description

United States Patent 91 Brantley [111 3,728,916 [451 Apr. 24, 1973 FLEXIBLE STRAP WRENCH [75] lnventor: Jerry K. Brantley, Pekin, Ill.
[73] Assignee: Caterpillar Tractor Co., Peoria, 111.
[22] Filed: June 14, 1971 [21] Appl. No.: 152,515
[52] US. Cl ..81/64 [51] Int. Cl. ..B25b 13/52 [58] Field of Search 8 H64, 3.43, 68
[56] References Cited UNITED STATES PATENTS 2,995,965 8/1961 Hockney 81/64 2,058,949 10/1936 BOrOWSki... .....81/64 X 3,376,628 4/1968 Kyser ..81/64 X 2,897,705 8/1959 Rozmus ..81/68 X 3,465,622 9/1969 Winans ..81/64 FOREIGN PATENTS OR APPLICATIONS 61,235 6/1948 Netherlands ..8 l/3.43
Primary Examiner-Granville Y. Custer, .lr. Assistant ExaminerRoscoe V. Parker Att0rneyCharles M. Fryer et a].
[5 7] ABSTRACT A strap wrench for grasping and rotating articles, such as cylindrical spin-on filters, comprises a support, a cam member rotatably mounted in the support and a flexible strap having one end attached to the cam member and a second end threaded therethrough. An arcuate surface is formed on the support to abut and substantially conform to outer cylindrical surface portions of the rotated article. Such arcuate surface cooperates with the strap to grasp the article, upon rotation of the cam member, to uniformly distribute a torquing force therearound and to prevent damage thereto.
5 Claims, 4 Drawing Figures PATENTEDAPR 24 I975 INVENTOR JERRY K. BRANTLEY BY v 2 j A'ITORNEYS FLEXIBLE STRAP WRENCH BACKGROUND OF THE INVENTION Numerous types of strap wrenches are employed for removing spin-on oil and fuel filters from internal combustion engines. Such wrenches exhibit disadvantages, such as their inability to uniformly distribute a torquing force fully around a filter to expeditiously and easily remove or install same. In addition, the wrenches oftentimes crush or otherwise damage the filter upon rotation thereof due to the filters thin-wall shell construction.
Damage to the filters shell during removal thereof may be sufficiently severe to prevent the wrench from gripping the filter. In such instances, the service man normally drives a bar or heavy screwdriver through the filter and cranks same to break it loose. This procedure is inconvenient, time-consuming and allows uncontrolled escape of fuel or oil.
During installation, replacement filters are customarily tightened by hand, without the aid of a strap wrench, to alleviate the damage and related problems. However, since the filters are subjected to severe vibrations or pulsations during engine operation, they have a tendency to loosen to thus induce oil or fuel leakage. The problem is particularly apparent with respect to filters employed in connection with high-performance, fuel injection pumps. Such pumps produce high intensity pressure waves which are transmitted through the filter to induce loosening thereof. Loosening of the fuel filter presents an especially dangerous situation due to the fire hazard involved.
SUMMARY AND OBJECTS OF THIS INVENTION An object of this invention is to overcome the above described problems by providing an economical and efficient strap wrench adapted to expeditiously grasp and rotate cylindrical articles, such as spin-on filters, without causing damage thereto. The strap wrench comprises a support having a cam member rotatably mounted thereon and a flexible strap having one end attached to the cam member. The support has an arcuate surface formed on a base thereof which substantially conforms to the periphery of the article. The cam member, when rotated, cooperates with the strap to uniformly distribute a torquing force around the article and to prevent damage thereto.
BRIEF DESCRIPTION OF THE DRAWINGS Further objects of this invention will become apparent from the following description and accompanying drawings wherein:
FIG. 1 is a top plan view of a flexible strap wrench embodiment of the present invention;
FIG. 2 is a side elevational view ofthe strap wrench;
FIG. 3 is a sectional view of the strap wrench, but il- Iustrating the wrench as it would appear during the installation ofa spin-on replacement filter; and
FIG. 4 is a view similar to FIG. 3, but illustrating the strap wrench as it would appear during the removal ofa spent filter.
DESCRIPTION OF THE PREFERRED EMBODIMENT Referring to FIGS. 1 and 2, the illustrated strap wrench embodiment essentially comprises a support 10, having a cam member 11 rotatably mounted therein, and a flexible strap 12 attached at one end thereof to the cam member. The U-shaped support (FIG. 2) comprises spaced upstanding legs 13 and 14, secured together by means of an intermediate base plate 15. The plate defines an arcuate surface 16 thereon, subscribed by a radius having its center at point X in FIG. 1, which faces away from the support and in general concave relationship thereto.
Since the outer diameters of a series of filters will vary in size, arcuate surface 16 preferably corresponds to the largest filter diameter in the series for which the wrench is to be used. The full accommodation of the largest diameter provides for a slight deflection of the shell of the smaller filters, without damage, so that they will assume the shape of arcuate surface 16. Arcuate surface 16 thus provides for the servicing of a wide range of filter sizes, while yet assuring maximum possible surface contact between the arcuate surface and the filters.
The contact area provided by the strap wrench of this invention is substantially larger than the contact areas which are occasioned by conventional strap wrenches. In particular, arcuate surface 16 cooperates with strap 12 to substantially fully circumvent and distribute a torquing force around the filter whereas prior art constructions normally concentrate high torquing forces at small areas on the filter. In FIG. 1, angle a defining the arcuate surface is preferably selected from the approximate range of from 30 to e.g. 65 as shown.
Cam member 11 comprises a pair of laterally spaced cylindrical bearing portions 17 and 18 rotatably mounted in bores formed in legs 13 and 14, respectively. Snap rings 19 and 20 are suitably positioned in annular grooves formed on the cam member to prevent axial movement thereof. The bearing portions are connected together by an intermediate cam means 21 which is offset radially with respect to a central rotational axis Y of the cam member.
An elongated pin 22 is secured to legs 17 and 18 of the cam member to attach the looped and stitched first end of flexible strap 12 thereto. It should be noted that the pin is offset with respect to axis Y and preferably diametrically opposed with respect to cam means 21 to provide a slot therebetween adapted to receive a second, free end of the strap therethrough.
The strap preferably comprises an elongated, flat band constructed of a flexible and durable woven fabric such as nylon. The strap has a high tensile strength, but yet exhibits sufficient flexibility to envelope and frictionally grasp the exterior surface of a cylindrical article, such as a spin-on filter F illustrated in FIGS. 3 and 4.
Referring to FIG. 3, the strap wrench is shown in its operative position for installing a spin-on filter F. Initially, the workman positions arcuate surface 16 in abutting relationship with the filter. The free end of strap 12 is then manually threaded through the slot defined between cam means 21 and pin 22 (FIG. 1) and semi-tightened. A square socket 23 is formed in each of bearing portions 17 and 18 of the cam member to accommodate a mating torquing tool.
Upon clockwise rotation of the tool and cam member about axis Y in FIG. 3,cam means 21 and pin 22 will rotate, as shown, to shorten the effective length of the strap portions forming a circular continuation of arcuate surface 16. Once the filter is grasped snuggly, the entire strap wrench is moved clockwise about axis X to tighten the filter a predetermined amount.
FIG. 4 illustrates the removal of a spent filter F by reversing the above described sequence of operation. In particular, cam member 11 is rotated in a counterclockwise direction to shorten the strap and to grasp the filter by applying a substantially uniform torquing force therearound.
What is claimed is:
1. A strap wrench for grasping and rotating cylindrical articles comprising a support including means defining a substantial arcuate surface thereon, facing away from said support in general concave relationship thereto, generally conforming to the outer diameter of an article to be rotated,
a cam member rotatably mounted about a central axis thereof in said support, including cam means,
and
an elongated flexible strap having an end attached to said cam member said cam means and the position whereat said strap is attached to said cam member being spaced on said cam member to define a slot therebetween adapted to receive a second, free end of said strap therethrough.
2. The invention of claim 1 wherein said cam means and the position whereat said strap is attached to said cam member are diametrically opposed on said cam member on respective sides of the central axis thereof.
3. The invention of claim 1 wherein said support is U'shaped to comprise a base defining said arcuate surface thereon and spaced legs having said cam member rotatably mounted therein.
4. The invention of claim 3 wherein said cam member comprises spaced, cylindrical bearing portions each rotatably mounted in a respective one of said legs and means for preventing axial movement of said cam member relative to said central axis and said support.
5. The invention of claim 1 wherein said arcuate surface is defined by an angle selected from the approximate range of from 30 to

Claims (5)

1. A strap wrench for grasping and rotating cylindrical articles comprising a support including means defining a substantial arcuate surface thereon, facing away from said support in general concave relationship thereto, generally conforming to the outer diameter of an article to be rotated, a cam member rotatably mounted about a central axis thereof in said support, including cam means, and an elongated flexible strap having an end attached to said cam member said cam means and the position whereat said strap is attached to said cam member being spaced on said cam member to define a slot therebetween adapted to receive a second, free end of said strap therethrough.
2. The invention of claim 1 wherein said cam means and the position whereat said strap is attached to said cam member are diametrically opposed on said cam member on respective sides of the central axis thereof.
3. The invention of claim 1 wherein said support is U-shaped to comprise a base defining said arcuate surface thereon and spaced legs having said cam member rotatably mounted therein.
4. The invention of claim 3 wherein said cam member comprises spaced, cylindrical bearing portions each rotatably mounted in a respective one of said legs and means for preventing axial movement of said cam member relative to said central axis and said support.
5. The invention of claim 1 wherein said arcuate surface is defined by an angle selected from the approximate range of from 30* to 90*.
US00152515A 1971-06-14 1971-06-14 Flexible strap wrench Expired - Lifetime US3728916A (en)

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US15251571A 1971-06-14 1971-06-14

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US (1) US3728916A (en)
JP (1) JPS5347560B1 (en)
BE (1) BE784789A (en)
BR (1) BR7203788D0 (en)
DE (1) DE2229334A1 (en)
GB (1) GB1346275A (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3838615A (en) * 1973-12-10 1974-10-01 Kd Mfg Co Oil filter wrench
US4221140A (en) * 1978-06-22 1980-09-09 Bracey Bobby R Filter wrench
US4249296A (en) * 1978-08-24 1981-02-10 Larry Telles Oil filter removing tool and method
DE3042364A1 (en) * 1980-02-01 1981-09-03 Taiyo Seiki Iron Works Co., Ltd., Osaka Lashing mechanism using strap - has rotary discs in two side walls connected by slotted shaft operated by lever via link arms
US4506568A (en) * 1983-06-16 1985-03-26 Aamodt Norman O Oil filter wrench
US4750389A (en) * 1986-09-04 1988-06-14 Abraham Shuster Strap wrench
US4987804A (en) * 1990-05-17 1991-01-29 Easco Hand Tools, Inc. Strap wrench
US5090274A (en) * 1991-02-19 1992-02-25 Epicor Industries, Inc. Oil filter wrench
US5323671A (en) * 1993-07-06 1994-06-28 Hebert Freddie P Ratchet tool
US5390570A (en) * 1994-01-04 1995-02-21 Reisner; Edward J. Adjustable wrench for oil and fuel filters
US6158306A (en) * 1998-10-06 2000-12-12 Gasparre; Pasquale Jar holder
US7111528B1 (en) * 2003-12-08 2006-09-26 Foster Marlene M Multipurpose grasping part holder
US20110167964A1 (en) * 2010-01-14 2011-07-14 Price David E Strap Wrench
US8424417B1 (en) 2010-12-30 2013-04-23 Matthew Ostroff Gripper for opening lumen and vial closures
US8607669B1 (en) 2010-12-30 2013-12-17 Matthew Ostroff Gripper for opening lumen and vial closures
US20160303716A1 (en) * 2015-04-20 2016-10-20 Alexei D. Abras Device for Turning an Object
US9475640B2 (en) 2014-08-07 2016-10-25 Ridge Tool Company Gripping tools
US20210122095A1 (en) * 2018-06-25 2021-04-29 Husky Injection Modling Systems Ltd. Nozzle with Removable Nozzle Tip Configured for Improved Heating

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2161408B (en) * 1984-04-06 1988-02-03 Mark Andrew Sanders Turning aid using rubber timing belt
GB2219538B (en) * 1988-05-17 1992-04-15 Thomas James Burley Oil filter remover
GB2233921A (en) * 1989-07-15 1991-01-23 Kenneth Skeath Belt wrench
CN111922963A (en) * 2020-08-10 2020-11-13 安徽信息工程学院 Large-scale nut rapid rotation device

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2058949A (en) * 1933-12-18 1936-10-27 Joseph Bargielewicz Gripping device
US2897705A (en) * 1957-02-13 1959-08-04 Utica Drop Forge & Tool Corp Strap wrench
US2995965A (en) * 1958-10-20 1961-08-15 Snap On Tools Corp Flexible strap wrenches
US3376628A (en) * 1965-09-03 1968-04-09 Aircraft Specialties Inc Ratchet arm piston ring compressor
US3465622A (en) * 1967-08-07 1969-09-09 Linnaeus Winans Motor oil filter wrench assembly

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2058949A (en) * 1933-12-18 1936-10-27 Joseph Bargielewicz Gripping device
US2897705A (en) * 1957-02-13 1959-08-04 Utica Drop Forge & Tool Corp Strap wrench
US2995965A (en) * 1958-10-20 1961-08-15 Snap On Tools Corp Flexible strap wrenches
US3376628A (en) * 1965-09-03 1968-04-09 Aircraft Specialties Inc Ratchet arm piston ring compressor
US3465622A (en) * 1967-08-07 1969-09-09 Linnaeus Winans Motor oil filter wrench assembly

Cited By (22)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3838615A (en) * 1973-12-10 1974-10-01 Kd Mfg Co Oil filter wrench
US4221140A (en) * 1978-06-22 1980-09-09 Bracey Bobby R Filter wrench
US4249296A (en) * 1978-08-24 1981-02-10 Larry Telles Oil filter removing tool and method
DE3042364A1 (en) * 1980-02-01 1981-09-03 Taiyo Seiki Iron Works Co., Ltd., Osaka Lashing mechanism using strap - has rotary discs in two side walls connected by slotted shaft operated by lever via link arms
US4506568A (en) * 1983-06-16 1985-03-26 Aamodt Norman O Oil filter wrench
US4750389A (en) * 1986-09-04 1988-06-14 Abraham Shuster Strap wrench
US4987804A (en) * 1990-05-17 1991-01-29 Easco Hand Tools, Inc. Strap wrench
US5090274A (en) * 1991-02-19 1992-02-25 Epicor Industries, Inc. Oil filter wrench
US5323671A (en) * 1993-07-06 1994-06-28 Hebert Freddie P Ratchet tool
US5390570A (en) * 1994-01-04 1995-02-21 Reisner; Edward J. Adjustable wrench for oil and fuel filters
US6158306A (en) * 1998-10-06 2000-12-12 Gasparre; Pasquale Jar holder
US6425305B2 (en) 1998-10-06 2002-07-30 Pasquale Gasparre Jar holder
US7111528B1 (en) * 2003-12-08 2006-09-26 Foster Marlene M Multipurpose grasping part holder
US20110167964A1 (en) * 2010-01-14 2011-07-14 Price David E Strap Wrench
US8555753B2 (en) 2010-01-14 2013-10-15 David E. Price Strap wrench
US8813611B2 (en) 2010-01-14 2014-08-26 David E. Price Strap wrench
US8850929B2 (en) 2010-01-14 2014-10-07 David E. Price Strap wrench
US8424417B1 (en) 2010-12-30 2013-04-23 Matthew Ostroff Gripper for opening lumen and vial closures
US8607669B1 (en) 2010-12-30 2013-12-17 Matthew Ostroff Gripper for opening lumen and vial closures
US9475640B2 (en) 2014-08-07 2016-10-25 Ridge Tool Company Gripping tools
US20160303716A1 (en) * 2015-04-20 2016-10-20 Alexei D. Abras Device for Turning an Object
US20210122095A1 (en) * 2018-06-25 2021-04-29 Husky Injection Modling Systems Ltd. Nozzle with Removable Nozzle Tip Configured for Improved Heating

Also Published As

Publication number Publication date
BR7203788D0 (en) 1973-09-25
GB1346275A (en) 1974-02-06
BE784789A (en) 1972-12-13
DE2229334A1 (en) 1972-12-21
JPS5347560B1 (en) 1978-12-21

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AS Assignment

Owner name: CATERPILLAR INC., A CORP. OF DE.,ILLINOIS

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905

Effective date: 19860515

Owner name: CATERPILLAR INC., 100 N.E. ADAMS STREET, PEORIA, I

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST.;ASSIGNOR:CATERPILLAR TRACTOR CO., A CORP. OF CALIF.;REEL/FRAME:004669/0905

Effective date: 19860515