Dropbolt lock assembly
US5044181A · kind A · utility
13Cited by
12References
15Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Mar 22, 1990 |
| Grant date | Sep 3, 1991 |
| Priority date | — |
| Expiry date | Mar 22, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T70/5376
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A dropbolt lock having a pair of dropbolts movable between knuckles is assembled on a formed steel assembly plate which is attached to a base plate, the assembly plate providing the spaced knuckles. A cam operator operates the dropbolts between true dead lock positions. On the inside of the lock, a cylinder lock or a thumb turn may be assembled by a single screw. The cover is provided with attachment screws which are concealed by the locking bolt when in locked position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.