E - Fixed Constructions – 05 – B
Patent
E - Fixed Constructions
05
B
E05B 63/08 (2006.01)
Patent
CA 2299597
A mortise latch and exit device includes active and passive mortise latch mechanisms with corresponding concealed vertical rods operated by links mounted within the mortise latch mechanisms. The mortise latch mechanisms latch double doors at a center point between the doors and at top points between each door and the door frame. Lower vertical rods may also be used to latch at bottom points between the doors and the floor. The active and passive mortise latch mechanisms are operated by corresponding push handle mechanisms and rotary handles. The mortise latch mechanisms cooperatively interact so that either door may be opened first, and either door may be closed first, without regard to the position of the other door. The active mortise latch mechanism includes a latch bolt and an activation bolt arranged so that one bolt is retracted when the other is extended, except when the doors are being opened or closed, when both bolts are retracted. The active mortise latch mechanism automatically retracts the latch bolt when the doors are not aligned and automatically extends the latch bolt when the doors are aligned. The passive mortise latch mechanism ejects the latch bolt as needed to allow the passive door to be opened first.
Picard Daniel
Shamp Donald T.
Ridout & Maybee Llp
Sargent Manufacturing Company
LandOfFree
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