US PATENT SUBCLASS 70 / 143
.~.~.~.~.~ Projectable beyond normal biased position

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}
143.~.~.~.~.~ Projectable beyond normal biased position

DEFINITION

Classification: 70/143

(under subclass 141) Subject matter wherein the bolt may be projected beyond its normal biased position to become, in

effect, a dead-bolt, thereby requiring an additional manipulation beyond its usual extreme latching condition to assume locked condition and accordingly requiring an additional manipulation to return it to its normal extreme latching condition.