Hold-open mechanism for use with a door closer
US4878265A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Sep 7, 1988 |
| Grant date | Nov 7, 1989 |
| Priority date | — |
| Expiry date | Sep 7, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/28
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A releasable door hold-open mechanism, for use with a door closer, is disclosed. The mechanism employs a latch assembly, mounted in a track which defines a predetermined path for a slider shoe associated with a door closer arm. The latch assembly employs a pair of reciprocable rollers, associated with a solenoid activated clevis. When the solenoid is actuated, the clevis maintains the rollers in a latching position, in which they can capture and hold a wedge associated with the slider shoe. Deactivation of the solenoid permits release of the wedge, and the force of the solenoid can also be overcome manually to release the wedge. The latch assembly is selectively positionable in a broad range of positions within the track, to determine the angular position of the door at which holding occurs.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.