Closure fasteners – Bolt casings
Patent
1989-07-17
1990-02-20
Smith, Gary L.
Closure fasteners
Bolt casings
292 1, 292DIG60, 292DIG74, 70461, E05C 116
Patent
active
049020579
ABSTRACT:
An adjustable deadlatch for a lockset for adjusting to either of two backset positions. First and second cylindrical members are located in a telescopic arrangement for allowing a longitudinal telescopic adjustment between the cylindrical members. First longitudinal adjustment structure is interconnected between the cylindrical members and includes a first vertical slot and a first pin member located within the first vertical slot and includes a first rotatable member supporting the first pin member at a radial position. A deadbolt, located within the first cylindrical member includes a longitudinal opening. An actuating member includes a longitudinal portion located within the longitudinal opening. Second longitudinal adjusting structure is coupled between the deadbolt and the actuating member and includes a second vertical slot and a second pin member received within the second vertical slot and mounted on a second rotatable member at a radial position. The adjustment structures are interconnected so that rotation of either provides for rotation of the other for coordinating the longitudinal adjustment between the cylindrical members and between the deadbolt and the actuating member and thereby provides for an adjustment corresponding to the two backset positions.
REFERENCES:
patent: 4372594 (1983-02-01), Gater
patent: 4623174 (1986-11-01), Trull et al.
patent: 4708379 (1987-11-01), Ching
patent: 4725086 (1988-02-01), Shen
patent: 4759576 (1988-07-01), Ching
patent: 4772055 (1988-09-01), Fang
Dino Suzanne L.
Hing Wai Metal Factory Ltd.
Roston Ellsworth R.
Schwartz Charles H.
Smith Gary L.
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