Counterbalance lock mechanism for a window assembly
US4446654A · kind A · utility
20Cited by
4References
3Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1982 |
| Grant date | May 8, 1984 |
| Priority date | — |
| Expiry date | Sep 29, 2002 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/148
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An improved counterbalance lock mechanism for a window assembly which includes a manually turned lock pin fitted within a stationary housing member located in the window jamb. The lock pin may be rotated into a first position subjecting a slide block to the influence of the mechanism and a second position which isolates the slide block from the counterbalancing effect.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.