E - Fixed Constructions – 05 – C
Patent
E - Fixed Constructions
05
C
E05C 9/00 (2006.01)
Patent
CA 2081586
A door latch having an adjustable backset position which allows it to be used in doors having either a 2 3/8" backset or a 2 3/4" backset. The latch includes a latch housing having two longitudinally spaced apart openings in communication with each other via a passageway. A cam is movable between the two openings through the passageway to adjust the backset. The cam cooperates with a retract slide which is engaged at its front end with the latch bolt to retract the latch bolt. The retract slide contains two sets of teeth at its back end, one set of teeth being engaged by the cam when it is in a first backset position and the second set of teeth being engaged by the cam when it is in a second backset position. The door latch also has a burglary deterrent feature comprising a dead bolt bar assembly which is in a retracted position when the door is closed and in an extended position when the door is open. The dead bolt bar assembly includes a blocker plate which, when the dead bolt bar is in a retract position, is activated by the dead bolt bar and prevents retraction of the latch bolt.
Serrure à distance d'entrée réglable pour utilisation sur des portes avec des broches à 2 3/8 ou 2 3/4 po. La serrure comporte un boîtier présentant deux ouvertures communicantes espacées dans un axe longitudinal. Une came placée dans le passage entre les deux ouvertures communicantes commande la distance d'entrée. La came est en coopération avec un coulisseau de rentrée dont l'extrémité avant est reliée au pêne demi-tour et effectue le dégagement du pêne demi-tour. L'extrémité arrière du coulisseau de rentrée est pourvue de deux jeux de dents; la came est en contact avec l'un ou l'autre jeu de dents selon la distance d'entrée sélectionnée. La serrure comporte aussi un dispositif anti-effraction comportant un pêne dormant, qui se trouve en position de rappel lorsque la porte fermée et qui est en extension lorsque la porte est ouverte. Le pêne dormant comporte une plaque de blocage qui empêche le retour du pêne demi-tour lorsque le pêne dormant est en position de rappel.
Newfrey Llc
Smart & Biggar
LandOfFree
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