EP0115430A2
Expired / Lapsed
EP
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Door lock assembly
Assignee: Dexter Lock Co
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Filing: 1984-01-26
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Granted: —
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Expires: 2004-01-26
Abstract
Abstract A door lock assembly (4) for fitting in a door (6) in the usual way having a deadbolt subassembly (12) with a deadbolt (42) shiftable between an extended locked position and a retracted unlocked position by an actuator arm 66 and biased toward the locked position by a spring (54). The deadbolt is restrained in the retracted position by restraining plates (28, 34) which release the deadbolt via a trigger subassembly (16). Such a deadbolt is thus automatically mechanically actuated with door closure for security so that closing the door actuates the trigger mechanism releasing the deadbolt restraining means and allowing the biased deadbolt to be thrown to the extended locked position.
Inventors
- 👤 Robert Anthony Marotto
Bibliographic Details
Application Number
—
Jurisdiction
EP
Data Source
google_patents
Last Synchronized
2026-11-03 17:36
CPC Classifications
E; E05; E05B; E05B63/00; E05B63/18; E05B63/20; Y; Y10; Y10T; Y10T292/00; Y10T292/06; Y10T292/08; Y10T292/096; Y10T292/1014; Y10T292/1022; Y10T292/1028; Y10T292/54; Y10T292/546
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
120 words
1 . A door lock assembly (4) comprising a deadbolt (42) shiftable between an extended lock position and a retracted position and means (66) for shifting the deadbolt from the extended position to the retracted position; characterised by biasing means (54) for applying a bias on the deadbolt toward the extended lock position; restraining means (28,34) for restraining the deadbolt in the retracted position against the bias of the biasing means and being actuable to release the deadbolt to enable the biasing means to shift the deadbolt to the extended lock position; and trigger means (16) for actuating the restraining jmeans to release the deadbolt and thereby allow the biasing means to shift the deadbolt to the extended lock position.
Claim 2
Dependent Claim
120 words
1 . A door lock assembly (4) comprising a deadbolt (42) shiftable between an extended lock position and a retracted position and means (66) for shifting the deadbolt from the extended position to the retracted position; characterised by biasing means (54) for applying a bias on the deadbolt toward the extended lock position; restraining means (28,34) for restraining the deadbolt in the retracted position against the bias of the biasing means and being actuable to release the deadbolt to enable the biasing means to shift the deadbolt to the extended lock position; and trigger means (16) for actuating the restraining jmeans to release the deadbolt and thereby allow the biasing means to shift the deadbolt to the extended lock position.
Claim 3
Dependent Claim
51 words
A door lock assembly as claimed in Claim 1 in which the trigger means comprises protrusion means (78') for abutment with a door strike (20) on a door frame (6) to cause the trigger means to actuate the restraining means for release of the biased deadbolt to shift into lock position.
Claim 4
Dependent Claim
87 words
A door lock assembly as claimed in Claim 2 in which the trigger means is shiftable in a first direction on engagement with the door strike to allow the deadbolt be thrown into the extended lock position and is shiftable in a second return direction when disengaged from the door strike, and clutch means for causing the trigger means to shift the deadbolt restraining means and thus the deadbolt into the extended lock position only when in the first direction and not in the second return direction.
Claim 5
Dependent Claim
73 words
A door lock assembly as claimed in Claim 1, 2 or 3 in which the trigger means comprises an abutment protrusion (78'), means (82) biasing the abutment protrusion to a protruding condition, the abutment protrusion being depressable against the force of the biasing means, a cam (84) movable with depression of the abutment protrusion, and in operative relation with the restraining means, for actuating the restraining means with depression of the abutment protrusion.
Claim 6
Dependent Claim
36 words
A door lock assembly as claimed in Claim 4 in which the.cam is inactivated with complete depression of the abutment protrusion, to enable the restraining means to again restrain the deadbolt when the deadbolt is retracted.
Claim 7
Dependent Claim
44 words
A door lock assembly as claimed in Claim 4 or 5 in which the cam is unactuable relative to the restraining means during extension of the depressed abutment protrusion, whereby opening of a door containing the door lock assembly will not release the deadbolt.
Claim 8
Dependent Claim
45 words
A door lock assembly as claimed in Claim 4, 5 or 6 in which the cam is part of a movable clutch element which remains fixed during depression of the abutment protrusion and which shifts in an inactive condition during extension of the abutment protrusion.
Claim 9
Dependent Claim
102 words
A door lock assembly as claimed in Claim 7 in which the movable element is pivotally mounted about a pivot axis within the abutment protrusion to pivotally shift in the inactive condition during extension of the abutment protrusion, the cam being a surface (82') spaced from the pivot axis and extending generally normal to an imaginary line connecting the cam surface and the pivot axis, so as to prevent pivotal movement of the element with force at the cam surface, and the cam surface engaging the restraining means for movement thereof with the force at the cam surface against the restraining means.
Claim 10
Dependent Claim
35 words
A door lock assembly as claimed in any one of the preceding claims in which there is an auxiliary, manually operable, deadbolt restrainer capable of securing the deadbolt in its retracted position until manually released.
Claim 11
Dependent Claim
52 words
A door lock assembly as claimed in any one of the preceding claims in which the deadbolt has a groove (50), the deadbolt restraining means being slidably movable to engage the deadbolt from shifting to the extended lock position, and the deadbolt restraining means being biased toward engagement with the deadbolt groove.
Claim 12
Dependent Claim
51 words
A door lock assembly as claimed in Claim 10 in which there is a cam surface (82') cooperatively engageable with the deadbolt restraining means to shift it out or engagement with the deadbolt groove when the trigger means are actuated to allow the deadbolt to shift to the extended lock position.
References Cited (Backward Citations)
No citation records indexed.
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