Lock assembly for sliding doors
US4754624A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jan 23, 1987 |
| Grant date | Jul 5, 1988 |
| Priority date | — |
| Expiry date | Jan 23, 2007 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/432
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An improved lock assembly is provided for high security locking of sliding door particularly such as sliding glass patio doors used in residential dwellings and the like. The improved lock assembly comprises a lock mechanism incorporated into the vertical stile at one side of a sliding door, wherein the lock mechanism is adapted for respective keyed and keyless operation from opposite sides of the door for displacing dual latch members toward and away from each other between locked and unlocked positions. In the locked position, the dual latch members engage a latch keeper on the adjacent door jamb for positively locking the door against unauthorized entry. The lock mechanism is conveniently integrated into a compact cartridge for facilitated mounting into a hollow extruded metal stile. In addition, the lock mechanism may include internal tumblers designed to resist keyless unlocking from the outdoor side of the door.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.