US PATENT SUBCLASS 418 / 69
WITH FRANGIBLE DRIVE CONNECTION OR CLUTCH


Current as of: June, 1999
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418 /   HD   ROTARY EXPANSIBLE CHAMBER DEVICES

69WITH FRANGIBLE DRIVE CONNECTION OR CLUTCH


DEFINITION

Classification: 418/69

(under the class definition) Apparatus in which (1) there is provided in the working member drive a weakened member designed to break or rupture on overload of the working member to thereby discontinue the drive or (2) a releasable means is provided in the drive connected to the working member for interrupting the drive either in response to a condition of operation of the device or at the will of an operator.