Search Images Maps Play YouTube News Gmail Drive More »
Sign in
Screen reader users: click this link for accessible mode. Accessible mode has the same essential features but works better with your reader.


  1. Advanced Patent Search
Publication numberUS3504579 A
Publication typeGrant
Publication dateApr 7, 1970
Filing dateNov 2, 1967
Priority dateNov 2, 1967
Publication numberUS 3504579 A, US 3504579A, US-A-3504579, US3504579 A, US3504579A
InventorsHarlan Dwayne L
Original AssigneeHarlan Dwayne L
Export CitationBiBTeX, EndNote, RefMan
External Links: USPTO, USPTO Assignment, Espacenet
Open end ratchet wrench
US 3504579 A
Abstract  available in
Previous page
Next page
Claims  available in
Description  (OCR text may contain errors)

April 7, 1970 n.1.. HARLAN y 3,504,579

OPEN END RATGHET WRENCH 'A Filed Nov. 2, 1967 vil United States Patent Office 3,504,579 OPEN END RATCHET WRENCH Dwayne L. Harlan, 31227 8th Ave. S., Federal Way, Wash. 98002 Filed Nov. 2, 1967, Ser. No. 680,228 Int. Cl. B25b 13/00, 13/46 U.S. Cl. 81-58.2 1 Claim ABSTRACT OF 'I'HE DISCLOSURE This invention relates generally to open end ratchet wrenches such as are used for tightening boltheads and nuts.

A principal object of the present invention is to provide an improved open end ratchet wrench that is designed particularly to be able to work in very close quarters where only a straight open wrench will serve.

Yet another object of the present invention is to provide an open end ratchet wrench which will work rapidly within very close quarters.

Still another object of the present invention is to provide an open end ratchet wrench which may be reversed by simply turning over.

Yet a further object of this invention is to provide an open end ratchet wrench wherein a different size ratchet wheel may be attached the other end of the handle.

Still a further object is to provide an open end ratchet wrench wherein the handle may be offset straight or extended to any length.

Yet a further object is to provide an open end ratchet wrench which is light in weight and which has a high strength.

Other objects of the present invention are to provide an open end ratchet wrench which is simple in design, inexpensive to manufacture, rugged in construction, easy to use and efficient in operation.

These and other objects are readily evident upon a study of the following specification and the accompanying drawing wherein:

FIGURE 1 is a fragmentary side elevation view of an open end ratchet wrench shown incorporating the present invention;

FIGURE 2 is an end elevation view thereof;

FIGURE 3 is an enlarged detailed view of the double hook mechanism that comprises a part of the present invention;

FIGURE 4 is an enlarged cross sectional view taken on the line 4-4 of FIGURE 1.

Referring now to the drawing in detail, the reference numeral represents an open end ratchet wrench, according to the present invention wherein there is a disk or wheel 11 of relatively flat character having flat opposite sides 12 upon each of which there is a raised, circular tongue 13. While FIGURES 1 and 2 of the drawing show the wheel assembly 11 at one end of a handle, it is to be understood that the opposite end of the handle is provided with a leg wheel assembly which would be made to accommodate a different size use.

3,504,579 Patented Apr. 7, 1970 The wheel or disk 11 has a peripheral edge that is divided into a series of ratchet teeth 14, the peripheral edge having a notch 15 therein at one point, the notch 15 having parallel opposite sides 16 for the purpose of grasping, nut or other object that is to be turned forwardly or in reverse.

The wheel 11 is supported in one end of a handle 17, the handle being comprised of a pair of side plates 18 having a handle core 19 therebetween. The handle core has a semicircular opening 20 in the end thereof for purpose of receiving the wheel 11, and each of the side plates 18 has a groove 21 of semi-circular configuration for purpose of receiving therein the tongue 13, thus allowing the wheel to be slideably engaged therewithin to permit the Wheel to rotate. Each of the side plates 18 includes a semi-circular notch 22 in the end thereof so as to provide suicient clearance for a nut or bolthead during pivotal travel of the wheel.

A pawl assembly 23 is provided for holding the wheel and allow rotation in one direction only thereof, the pawl assembly comprising a pair of hooks 24 and 25 pivotable about a pin 26. A spring 27 coiled around the pin 26 is provided with end legs, one of which bears against each of the hooks 25 so to normally maintain them in alignment for engagement with the teeth 14 of the wheel. It is to be noted that by using a pair of hooks with points of contact greater than the nut opening on the wheel, one hook will always be in contact with the wheel. This will give a greater strength to the device.

The side plates may be drop forged from alloy steel with matching grooves to fit the wrench wheel. The entire device may be assembled together and then secured by a plurality of pins 26 at each opposite end of the handle 17.

While various changes may be made in the detailed construction, it is understood that such changes will be within the spirit and Scope of the present invention as is defined by the appended claim.

I claim:

1. In an open end ratchet wrench of ratchet type, the combination of a rotatable wheel supported rotatably free at each end of a handle, each of said wheels comprising a relatively thin circular disk having flat opposite sides with extending tongues on each said side, each said disk having a peripheral edge with a plurality of ratchet teeth, said peripheral edge having a notch at one point therein for purpose of engaging a nut or bolthead, said handle comprising an elongated member having a semi-circular opening in each end thereof for purpose of receiving said wheel, said handle being comprised of a central core member and a side plate member on each side of said core member, said core member having said semi-circular opening, each of said side plate memibers having a semi-circular depression or groove therewithin for purpose of engaging slideably free said tongue on each side of said wheel, said core member and said side plate members being firmly secured together by a transverse extending pin at each end of said handle, a pawl assembly being provided for allowing rotation of said wheel in one direction only, said pawl assembly comprising a pair of hooks secured pivotally free upon each one of said pins, and a spring coil around said pin, said spring having a terminal end at each end thereof which engages each one of said References Cited UNITED STATES PATENTS 9/1910 Lane 81-63 X 8/ 1916 Boosinger 81-60 12/1951 Filiatreault 251-582 12/1953 Sellers 81-582 12/1954 Reiken 81-61 JAMES L. JONES, JR., Primary Examiner U.S. Cl. X.R.

Patent Citations
Cited PatentFiling datePublication dateApplicantTitle
US969379 *Jan 2, 1909Sep 6, 1910J C Mccarty & CoRatchet mechanism for screw-drivers, wrenches, &c.
US1194471 *Jun 1, 1916Aug 15, 1916 Combihatiob
US2578410 *Oct 29, 1949Dec 11, 1951Aaron T PerbohnerOpen-ended ratchet wrench
US2660910 *May 15, 1951Dec 1, 1953Sellers Albert E GRatchet wrench
US2696748 *Feb 2, 1954Dec 14, 1954Relken Gerald ERatchet wrench
Referenced by
Citing PatentFiling datePublication dateApplicantTitle
US3976530 *May 12, 1975Aug 24, 1976Cities Service CompanyMethod for producing a two component polymeric tape
US4622870 *May 23, 1985Nov 18, 1986Gerald ShirleyOpen-end ratchet-like wrench with releasable locking head
US4926720 *Oct 11, 1988May 22, 1990Peter WolterRachet spanner with open mouth
US5113726 *Oct 4, 1990May 19, 1992Ethridge Richard TUtility tool
US5501124 *May 26, 1995Mar 26, 1996Ashby; Earl T.Open end ratchet wrench
US5924341 *Mar 22, 1996Jul 20, 1999Brooks; Eugene M.Tube fitting ratchet tool
US20090229425 *Jan 5, 2009Sep 17, 2009Richard RiggioOne touch retractable ratchet wrench
US20100212461 *Feb 24, 2009Aug 26, 2010Burt William JOpen end ratchet wrench
US20100251859 *Apr 7, 2009Oct 7, 2010Steven GappUniversal Pawl Component for Open-ended Ratchet Wrench
US20130118318 *Nov 10, 2011May 16, 2013DeBoya RobertsonOpen-End Ratchet Wrench
EP0237626A1 *Nov 20, 1986Sep 23, 1987Wolter, PeterRatchet wrench
WO1987005553A1 *Mar 12, 1987Sep 24, 1987Wolter, PeterRatchet spanner with open mouth
WO2000009293A1 *Jul 23, 1999Feb 24, 2000Suad BehmenOpen-end wrench
U.S. Classification81/58.2, 81/61
International ClassificationB25B13/46, B25B13/00
Cooperative ClassificationB25B13/463
European ClassificationB25B13/46B1B