Door closer having arm/slide track connection
US4837890A · kind A · utility
18Cited by
5References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | May 13, 1988 |
| Grant date | Jun 13, 1989 |
| Priority date | — |
| Expiry date | May 13, 2008 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/301
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A door closer is disclosed having an operating arm with a track traveler which mounts a plurality of rollers. The rollers engage between them the opposite sides of a track on the door. The opposite sides of the track each have outward concave faces. The rollers are ball-shaped, conforming to the faces of the track. A door holder is also disclosed which may be adjustably fixed at a position along the track, the traveler and the holder having the mating parts of a snap fastener which, when engaged, hold releasably the door at a fixed hold-open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.