Lockset assembly

Details Lockset assembly Lockset assembly

1985-11-19

1990-08-07

Wolfe, Robert L.

Locks

Special application

For closures

70474, 70479, 70489, 292167, 29216915, E05B 5506

Patent

active

049457373

ABSTRACT:
A lockset for a door comprising a latch bolt assembly including a bolt movable between a partially extended latching position, a fully extending dead bolt position, and a retracted position. A spring biases the bolt toward its dead bolt position and a spindle extends through the latch assembly. The spindle is connected to the bolt to move the bolt between its positions upon rotation of the spindle. A mechanism is provided for holding the latch bolt in its latching position when the door is open and a mechanism responsive to the closing of the door is provided to move the latch bolt automatically into its dead bolt position.

REFERENCES:
patent: 71944 (1867-12-01), Andrews
patent: 1137800 (1915-05-01), Shaw
patent: 2661972 (1953-12-01), Schlage
patent: 3390558 (1968-07-01), Tornoe et al.
patent: 3751085 (1973-08-01), Sanders et al.
patent: 4031725 (1977-06-01), Reid
patent: 4248452 (1981-02-01), Allenbaugh
patent: 4333324 (1982-06-01), Dietrich et al.
patent: 4422677 (1983-12-01), Gater
patent: 4593542 (1986-06-01), Rotondi et al.
patent: 4594864 (1986-06-01), Hart
patent: 4643007 (1987-02-01), Fish et al.
patent: 4656849 (1987-04-01), Rotondi et al.
patent: 4725085 (1988-02-01), Hu et al.

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