US PATENT SUBCLASS 70 / 157
.~.~.~.~.~.~ Trip release

Current as of: June, 1999
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70 /   HD   LOCKS

57  DF  SPECIAL APPLICATION {7}
77  DF  .~ For closures {5}
91  DF  .~.~ Door {5}
101  DF  .~.~.~ Swinging door {4}
141  DF  .~.~.~.~ Locking latch bolts, biased {5}
156  DF  .~.~.~.~.~ Combination and/or key operable {1}
157.~.~.~.~.~.~ Trip release

DEFINITION

Classification: 70/157

(under subclass 156) Subject matter wherein the bolt is released by tripping detents, pawls or catches which cooperate with the bolt, the door or the door jamb.