Cylindrical lock assembly
US5125696A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 12, 1990 |
| Grant date | Jun 30, 1992 |
| Priority date | — |
| Expiry date | Oct 12, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/0984
- WIPO fieldCivil engineering
- WIPO sectorOther fields
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.