Window latch
US4061370A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Feb 26, 1976 |
| Grant date | Dec 6, 1977 |
| Priority date | — |
| Expiry date | Feb 26, 1996 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/1028
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A window latch and handle assembly exhibiting an attractive appearance while providing a high degree of strength and small size. The assembly employs a pair of body members which are secured to a door or window frame and a unitary handle and latch. The handle extends from one side of the assembly of the two body parts and the latch from the opposite side thereof. A lock member with an elongated arm surface engages a key slot in the handle and latch. When in one orientation, the locking member allows the handle and latch to move laterally against the resistance of return spring and when turned 90.degree., effectively prevents movement of the handle and latch by direct broad area contact with one of the body parts. When rotated 90.degree., the lock member rests in the key slot allowing limited movement of the handle and latch to release the door or window. A captive spring beneath the locking member serves to cause the locking member to spring outward into a visible position whenever it is in unlocked position thereby signalling the condition of the latch. When it is in a locked position, the locking member having merely a screw head, appears merely as an assembly screw thereby avoid…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.