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US 5,794,991 AGranted
Interlocking dead bolt with projecting pins
AssigneeSchlage Lock Company LLC
InventorsJon M. Smallegan, L. C. Derek Chamberlain, Dario L. Pompeii
Life of this patent
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AssigneeSchlage Lock Company LLC
InventorsJon M. Smallegan, L. C. Derek Chamberlain, Dario L. Pompeii
Estimating the term…
A lock assembly of a door preparation includes at least one spring latch member which is spring biased within a door jamb bore between an extended position and a retracted position in which the spring latch member, when the door is being opened, engages a strike plate of the door jamb and is moved inwardly within the door preparation for allowing the door to be opened. A dead bolt, which operates independently from the spring latch member, is movable between a retracted position in which it is within the door preparation and an extended position in which it is extended within the door jamb bore for locking the door. A projecting pin is movable between a first position in which the projecting pin is disposed generally between the spring latch member and dead bolt and a second position in which the pin projects laterally outwardly from a peripheral edge of the spring latch member when the dead bolt is moved to its extended position to engage the strike plate. The projecting pin has a detent element which rides within a cam track formed in the dead bolt for moving the projecting pin between its first and second positions. The lock assembly further includes an actuating assembly for moving the dead bolt between its retracted and extended positions.
In a lock assembly of a door preparation comprising at least one spring latch member and a spring for spring biasing the at least one spring latch member within a door jamb bore of a door jamb between an extended position in which the spring latch member is for being extended outwardly from the door preparation and into the door jamb bore, and a retracted position in which the spring latch member, when the door is being opened, engages a strike plate of the door jamb and is moved inwardly within the door preparation for allowing the door to be opened, and a dead bolt which operates independently from the spring latch member and is linearly movable between a retracted position in which it is within the door preparation and an extended position in which it is extended within the door jamb bore for locking the door, said spring latch member being located on one side of said dead bolt and having a planar surface facing a planar surface of the dead bolt, wherein the improvement comprises a projecting pin movable between a first position in which the projecting pin is disposed generally between the spring latch member and dead bolt and a second position in which the pin projects laterally outwardly from a peripheral edge of the spring latch member when the dead bolt is moved to its extended position to engage the strike plate, and means for moving the projecting pin between its first and second positions.
A dead bolt and a dead bolt actuating assembly for moving said dead bolt between a retracted position and an extended position, said assembly comprising:
A lock assembly for locking a door against movement relative to a door jamb, said assembly comprising:
A lock assembly as claimed 15 and further comprising:
Dependencies are inferred from the claim text.