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US Patent: 4,508,005
Quick Release Mechanism for Ratchet Wrench
Timm R. Herman - Kenosha, WI
Frank Mikic - Kenosha, WI

USPTO Classifications:
81/177.85, 81/60

Tool Categories:
wrenches : ratchet wrenches

Snap-On Tools Corp. - Kenosha, WI

Not known to have been produced

none listed

Patent Dates:
Applied: Dec. 19, 1983
Granted: Apr. 02, 1985

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


The mechanism, used in a ratchet wrench, includes a body carrying an integral stud. A bore extends axially into both and a formed-spring actuator is reciprocally mounted therein. A transverse bore in the stud slidably holds a pin which is connected to the actuator. A socket is applied to the mechanism by pushing the socket against a camming surface on the pin to enable the socket to be snapped onto the pin without operating the actuator. The socket is removed by depressing the actuator. A ramp-like structure in the bore engages an offset part of the formed-spring actuator causing it to divert and move the pin to its release position. An elastomer push button is preferably attached to the actuator to sealingly protect the mechanism and also to provide a nice appearance.

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