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US Patent: 4,936,701
Universal Joint with Rotating Holder Sleeve
Kenneth D. Allen - Spring Valley, OH
James S. Amtmann - Dublin, OH

USPTO Classifications:
403/114, 403/120, 403/146, 403/324, 403/57, 464/115, 464/120, 81/177.75

Tool Categories:
wrenches : socket wrenches

Mac Tools, Inc. - Washington Court House, OH

Not known to have been produced

none listed

Patent Dates:
Applied: Aug. 30, 1989
Granted: Jun. 26, 1990

Patent Pictures:
USPTO pdf tiff
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Biebel, French & Nauman - patent attorneys


A universal joint for use with impact wrenches and the like comprising a coupling having a bore at one end for engaging the drive shaft of a wrench and a ball receiving cavity at its other end; a socket engaging part having a ball member disposed in the ball receiving cavity; and a guide sleeve concentrically and slidably mounted for free rotation to the coupling, the guide sleeve having a substantially smooth uninterrupted outer cylindrical surface which may be held between the fingers of an operator while the joint is rotating.

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