US PATENT SUBCLASS 70 / 131
.~.~.~.~.~.~.~ Keeper interlocking

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}
*  DD  .~.~.~.~ Dead bolts {2}
124  DF  .~.~.~.~.~ Single {5}
129  DF  .~.~.~.~.~.~ Sliding {5}
131.~.~.~.~.~.~.~ Keeper interlocking

DEFINITION

Classification: 70/131

(under subclass 129) Subject matter wherein there is provided an auxiliary mechanism to cooperate with the keeper to provide an effective interlock between the bolt and keeper, whether the auxiliary securing means is incorporated in the

bolt or keeper.