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US Patent: 5,485,769
Square Drive Adapter
Gene E. Olson - Kenosha, WI
Gerald A. Wridt - Racine, WI

USPTO Classifications:
81/177.85, 81/438

Tool Categories:
wrenches : wrench components : wrench sockets

Snap-On, Inc. - Kenosha, WI

Not known to have been produced

none listed

Patent Dates:
Applied: Aug. 03, 1994
Granted: Jan. 23, 1996

Patent Pictures:
USPTO pdf tiff
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Snap-On Tools Company History
Emrich & Dithmar - patent attorneys


A tool combination includes a socket with a hole extending axially therethrough having a large square drive portion and a small drive portion and at least one shoulder between said large and small drive portions. In one embodiment the small drive portion of the hole is hexagonal in shape and a hexagonal bit has an application end and a coupling end, the application end being insertable into the hole from the large drive portion thereof. The coupling end is provided with a retainer in the form of either an enlarged head or a laterally projecting ear which seats against the shoulder, with the application end of the bit projecting forwardly from the bit end of the socket. In a second embodiment the tool combination is a drive adapter, the small drive portion of the hole being square in shape. A square drive lug is insertable in the small drive portion of the hole from the large drive portion thereof and has upset crimped corners forming projection ears to seat against the shoulder. A male drive element, when received in the large drive portion of the hole, retains the bit or drive lug in place.

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