Cylindrical lock assembly

Details Cylindrical lock assembly Cylindrical lock assembly

1990-10-12

1992-06-30

Moore, Richard E.

Closure fasteners

Bolts

Sliding

292DIG61, E05C 116

Patent

active

051256967

ABSTRACT:
A cylindrical lock assembly (20) includes an inside subassembly (22) and an outside subassembly (24) which are assembled with a door (326). Each subassembly (22,24) includes a rose liner (26,38), a return spring cassette (28,40), a rose (30,42), a lever (32,46) and a lever insert (34,48). The inside subassembly (22) also includes a turn button (36) and the outside subassembly (24) includes a cylinder lock (44).
The subassemblies (22,24) are assembled onto respective sleeves (168,170) of a chassis (50) which facilitates the retraction of a latchbolt (54) upon operation of either of the levers (32,46).
Cassettes (28,40) are mounted in the lock assembly (20) by a pair of screws with one screw being inserted from one side of the door (326) and the other screw being inserted from the other side of the door.

REFERENCES:
patent: 124936 (1872-03-01), Craw
patent: 2811384 (1957-10-01), Schmid
patent: 3471190 (1969-10-01), Wanserough et al.
patent: 3550411 (1970-12-01), Neary et al.
patent: 4037865 (1977-07-01), Hook
patent: 4453753 (1984-06-01), Fayerman et al.
patent: 4502720 (1985-03-01), Fayerman et al.
patent: 4869083 (1989-09-01), DeMarseilles et al.
patent: 4998760 (1991-03-01), Nixon et al.

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