US PATENT SUBCLASS 70 / 422
.~.~.~ Yielding or frangible connections

Current as of: June, 1999
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70 /   HD   LOCKS

266  DF  OPERATING MECHANISM {6}
336  DF  .~ Key {10}
416  DF  .~.~ Tampering prevention or attack defeating {6}
422.~.~.~ Yielding or frangible connections

DEFINITION

Classification: 70/422

(under subclass 416) Devices including such connections as will readily yield or be broken or ruptured in the application of excessive force, but which in response to the proper implement will function normally.