Hold-open device for use with conventional door closer
US4286412A · kind A · utility
24Cited by
5References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 25, 1979 |
| Grant date | Sep 1, 1981 |
| Priority date | — |
| Expiry date | Jul 25, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/296
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Door holder is adapted to work with conventional door closer. Holder comprises a shoe moving along a track and connected to the closer operating arm. A latch, when device is activated, holds shoe with door in open condition. Latch is attached to a frame near the track and which may be moved away from latching engagement with shoe either by forcible closing of the door manually or by de-activating closer.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.