Patent ID: 8096594
Filing Date: 2012-01-17
Classification: E05B,Y10T

Abstract:
1. In a door strike for captivating and releasing a door bolt, the combination comprising a) a longitudinally elongated carrier, b) mechanism including a longitudinally elongated solenoid supported by the carrier, the solenoid having a longitudinally movable plunger, c) a trip lever pivotally supported in the carrier, d) a laterally extending actuating arm pivotally supported in the carrier to be pivoted by a tapered cam surface as the plunger moves longitudinally in response to solenoid energization, thereby to pivot the trip lever, e) a generally longitudinally extending blocking arm or arms pivotally supported in the carrier to be released for pivoting when the trip lever is pivoted, and f) 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, g) said mechanism having an adjusted fail secure first configuration characterized in that when electrical power to the solenoid is OFF, the mechanism is locked, preventing release of the door bolt for door opening, h) said mechanism having an adjusted fail safe second configuration characterized in that when electrical power to the solenoid is ON, the mechanism is locked, and when electrical power to the solenoid is OFF, the mechanism is unlocked, releasing the door bolt for door opening, i) there being two of said retainers which have L-shaped door bolt captivating terminals that spread apart as the two retainers pivot, j) and wherein said mechanism includes a slide link and a tab on said link movable by the link between a first position registered with the trip lever and effecting blocking thereof, and corresponding to said first configuration, and a second position wherein the tab is not registered with the trip lever and corresponding to said second configuration.