Patent ID: 7905521
Filing Date: 2011-03-15
Classification: E05B,Y10S,Y10T

Abstract:
1. A multipoint latch of the type appropriate for use in sliding doors, said latch having a housing which houses two retractable hooks that work in co-action with at least one keeper that is set in a door jamb, so as to allow for locking and unlocking of the sliding door, wherein said multipoint door latch comprises: (a) a pair of hooks that are respectively mounted upon a pair of eccentric cams, and, by the motion of a turn-key, are driven to rotate from a retracted position inside the housing to a position where each hook is generally in line with a portion of said at least one keeper, but remain displaced therefrom, each cam being biased by a spring, said spring biasing having a direction being coordinated with the corresponding cam's rotational position, and wherein a spring force, exerted by the spring, causes rotation of each cam relative to each hook, and movement of said cams from a first to a second position, said cam rotation relative to said hooks resulting in translation of said hooks from said in-line position to engage the keeper in a locked position; (b) a pair of actuators responsive to said turn-key motion and configured such that said actuators drive said hooks into the locked position, and alternatively drive the cams to return the hooks back to the retracted position, where the hooks and respective cams are interconnected through at least a portion of the motion from said locked position to said retracted position and a portion of the motion from said retracted position to said locked position; and said hooks and respective cams also rotating freely relative to one another during a portion of the motion from said locked position to said retracted position and a portion of the motion from said retracted position to said locked position.