Abstract:
In combination, a door, two latches at an edge of the door, and door latch operating components at opposite sides of the door; displaceable structure in the door having a position blocking movement of the latches, first mechanism responsive to displacement of one of the components for displacing the structure from blocking position to allow movement of the latches, for door opening; and electrically operable actuating means for effecting displacement of the structure from blocking position to allow movement of the latches, for door opening.
Abstract:
In combination a door, latch structure at an edge of the door, and independently opens the door latch operating components at opposite sides of the door, displaceable structure in the door having a position blocking movement of the latch structure, first means responsive to displacement of a selected one of the components for displacing the structure from the blocking position to allow movement of the latch structure, for door opening, and the first means including a rotatable cam having reversible positions in each of which motion is transmitted to the displacement structure in response to displacement of the respective components.
Abstract:
A locking system enabling selectively handed handle turning as for unlocking a door, comprising in combination, drive means including said handle rotatable clockwise and counterclockwise, driven means including a part movable linearly in a primary direction, to operate door lock structure, and coupling means including a handle rotation direction selector having first and second alternate positions, and operable to displace said part in said primary direction in response to handle clockwise rotation when the selector is in first position, and alternatively to displace said part in said primary direction in response to handle counterclockwise rotation when the selector is in second position, as for example in relation to two parallel racks.
Abstract:
In a door strike for captivating and releasing a door bolt, the combination comprising a longitudinally elongated carrier, a longitudinally elongated solenoid supported by the carrier, the solenoid having a longitudinally movable plunger, a trip lever pivo tally supported in or on the carrier, a laterally extending actuating arm pivotally supported in or on the carrier to be pivoted as the plunger moves longitudinally in response to solenoid energization, thereby to pivot the trip lever, a generally longitudinally extending blocking arm or arms pivotally supported in or on the carrier to be released for pivoting when the trip lever is pivoted, and a door bolt retainer or retainers pivotally supported in the carrier to be released for pivoting when the blocking arm or arms are released for pivoting, thereby to release the door bolt from captivation, for movement with the door. Dual springs are compressed by the plunger in response to solenoid energization. A strut on the plunger engages solenoid structure upon plunger retraction to prevent wear or peening of the plunger.