E - Fixed Constructions – 05 – B
Patent
E - Fixed Constructions
05
B
292/36
E05B 9/04 (2006.01) E05B 63/00 (2006.01)
Patent
CA 1046553
LATCH CONSTRUCTION WITH IMPROVED ANTI-VIOLATION FEATURES Abstract of the Disclosure: A bolt is reciprocally extended and retracted in a door by a latch driving mechanism operably connected to exterior and interior operator assemblies projecting from a mounting opening between faces of the door. A pair of inwardly dished reinforcing plates edge abut the door faces spanning the door opening and the exterior operator assembly is secured inwardly against its respective reinforcing plate by primary fastening screws engaged with a lock frame of the exterior operator assembly, through the latch driving mechanism and end secured in the opposite interior reinforcing plate. If a hand actuated interior operator assembly is used, the interior operator is rotatably mounted on the interior cover which is secured to the interior reinforcing plate by secondary fastening screws endwise secured in the primary fastening screws, but if the interior operator assembly includes a lock, the interior operator assembly is secured inwardly against the interior reinforcing plate by the lock frame being similarly engaged by secondary fastening screws. In the latch driving mechanism, a pair of longitudinally extending driving levers are rearwardly operably connected to the exterior and interior operators and forwardly -1- pivotally connected within a rearwardly opening bolt cavity to the bolt for movement thereof. The rearward ends of the driving levers are movably guided along latch frame guide surfaces by pin connection therewith, retention against such guide surfaces being maintained by a spring constantly resiliently urging the driving lever forward ends downwardly about their pivotal connection to the bolt. The spring is C-shaped positioned between the driving levers with an upper leg bearing upwardly against the bolt and a lower leg resting downwardly against the bolt pivot pin and terminating rearwardly thereof with downward engagement in slots of the driving levers.
277704
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