Self-locking window operator
US4617758A · kind A · utility
47Cited by
9References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 23, 1984 |
| Grant date | Oct 21, 1986 |
| Priority date | — |
| Expiry date | Jan 23, 2004 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE05Y2900/148
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A self-locking window operator having one or more arms transmitting a force from a drive mechanism to a window sash for positioning thereof and with the arms mounted and driven for rotational movement in positioning of the window sash and also mounted and driven for linear movement when the window sash is closed to achieve a locking action between the window sash and the window frame by engaging a locking mechanism which locks the window against high window-opening loads.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.