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US Patent: 3,208,318
Quick Release For Socket Wrenches
Peter M. Roberts - Gardner, MA

USPTO Classifications:
403/325, 81/177.85

Tool Categories:
wrenches : socket wrenches


Sears, Roebuck & Co. - Chicago, IL

none listed

Patent Dates:
Applied: Apr. 24, 1964
Granted: Sep. 28, 1965

Patent Pictures:
Peter M. Roberts patent Sept. 28, 1985
USPTO pdf tiff
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The Wrench Case (1986)
Wrench Inventor Settles (1989)
A spring-loaded central pin in the center of a ratchet driver has a indentation into which the spring ball or detent which holds a socket can retract.

The patent was the basis for SEARS, ROEBUCK & Co.'s quick release feature on CRAFTSMAN ratchets, and the center of protracted litigation between SEARS and the inventor.

Links point to "archived" newspaper accounts from the Los Angeles Times (1986) and an Associated Press piece that appeared in the Eugene, Oregon REGISTER-Guard (1989).

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