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A door lock includes a plurality of latch bolt assemblies that are mountable on a door at spaced locations about the periphery of the door, an operating mechanism that is flush-mountable on the door at a central location, and elongate linkage elements for interconnecting the operating mechanism with

A door lock includes a plurality of latch bolt assemblies that are mountable on a door at spaced locations about the periphery of the door, an operating mechanism that is flush-mountable on the door at a central location, and elongate linkage elements for interconnecting the operating mechanism with the latch bolt assemblies to enable the operating mechanism to concurrently operate the latch bolt assemblies. The operating mechanism includes a pan-shaped housing, a paddle handle that is mounted on the housing for pivotal movement between a nested position and an extended position, a slide that is track-mounted for sliding movement relative to the housing between first and second positions, a pair of operating arms that are and are pivotally connected to the housing for movement between latched and unlatched positions in response to movement of the slide, and a detent that is interposed between the housing and the slide for assisting to releasably retain the slide in its first and second positions, and to releasably retain the arms in their latched and unlatched positions.

대표청구항 ▼

A plural-point latch for mounting on a closure for releasably retaining the closure in a closed position, comprising: (a) a plurality of latch bolt assembly means for attachment to a closure at a plurality of spaced locations about the periphery of the closure for releasably engaging suitably config

A plural-point latch for mounting on a closure for releasably retaining the closure in a closed position, comprising: (a) a plurality of latch bolt assembly means for attachment to a closure at a plurality of spaced locations about the periphery of the closure for releasably engaging suitably configured strike formations that are provided adjacent the spaced locations, with each of the latch bolt assembly means including casing means for attachment to the closure, and an associated latch bolt means that is connected to the casing means for movement relative to the casing means into and out of engagement with an associated one of the strike formations; (b) flush-mountable operating means for flush-mounting on the closure at an operating means location that is remote from each of the plurality of spaced locations; (c) elongate linkage means for connecting the operating means with the latch bolt assembly means for moving the latch bolt means out of engagement with their associated strike formations in response to operation of the operating means so as to release the latch bolt assembly means from engagement with the strike formations; (d) wherein the operating means includes: (i) pan-shaped housing means formed as a metal stamping and having side and back walls that define a forwardly-facing recess that is surrounded by a perimetrically extending mounting flange, with the back wall having a front surface that faces forwardly into the recess, and having a back surface on the opposite side thereof, and with the back wall having an opening that is formed through the back wall; (ii) mounting plate means formed as a metal stamping for attachment to the back surface of the back wall in the vicinity of the opening that is formed through the back wall, with the mounting plate means having opposed side formation means and opposed end formation means that form a continuous band of material that extends about a central opening that is formed through the mounting plate means, with the opposed side formation means having at least portions thereof that are configured to extend along portions of the back wall that are located on opposite sides of the opening that is formed through the back wall, and with the mounting plate means having track formation means that extend from the opposed side formation means toward the central opening to define a pair of opposed rail means that face toward each other and extend along opposite sides of the central opening, with the opposed rail means extending substantially parallel to each other and being spaced apart by a first distance for defining a slide track that extends along the back wall in the vicinity of the opening that is formed through the back wall, and with the track intersecting with the opening that is formed through the back wall; (iii) elongate slide means having a pair of opposed, longitudinally extending side portions that face away from each other and are spaced apart by a second distance that is greater than the first distance, with groove means being provided to extend longitudinally along the side portions to define a pair of grooves that are configured to receive the opposed rail means to mount the slide means for movement along the track; (iv) handle means pivotally mounted on the housing means and being movable with respect to the housing means between a nested position wherein the handle means is nested within the recess, and an extended position wherein at least a portion of the handle means projects forwardly from the recess, with the handle means having a rearwardly extending projection that extends through the opening that is formed through the back wall and that extends into the slide means moves along the track; (v) receiving formation means provided on the slide means for closely receiving the rearwardly extending projection of the handled means to provide an essentially play-free driving connection between the handle means and the slide means that is operable to cause the handle means and the slide means to move in unison, with the slide means being movable along the track between a first position that is assumed by the slide means when the handle means is in its nested position, and a second position that is assumed by the slide means when the handle means is in its extended position; (vi) operating arm means for connecting the elongate linkage means to the slide means to effect movement of the elongate linkage means in response to movement of the slide means such that, when the slide means is in its first position, the elongate linkage means permits the latch bolt means to extend into engagement with the strike formations, and when the slide means is in its second position, the elongate linkage means retracts the latch bolt means from engagement with the strike formations, with the operating means including a pair of operating arms each of which is connected to the housing means for pivotal movement relative to the housing means about a separate axis of rotation, and each of which is connected to the slide means so as to be rotated about its associated axis of rotation in response to movement of the slide means between its first and second positions; and, (vii) detent means interposed between the slide means and the housing means, for releasably retaining the slide means in its first and second positions with respect to the housing means, with the detent means including a hole formed in the slide means and opening forwardly toward the back wall of the housing means, a detent element positioned in the hole, biasing means positioned in the hole for biasing the detent element forwardly with respect to the hole so as to project outwardly from the hole and into engagement with the back wall portion of the housing means, and with first and second dimple-like depression means being provided in the back wall portion of the housing means for receiving the detent element when the slide means is in its first and second positions.