Electric door opener with multiple position armature permitting different operation modes
US5788295A · kind A · utility
14Cited by
6References
9Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Feb 28, 1997 |
| Grant date | Aug 4, 1998 |
| Priority date | — |
| Expiry date | Feb 28, 2017 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T292/699
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An electric door opener with a trimmer actuatable by an armature and a mat coil. The trimmer is adjustably positioned for the release or locking of a door opener latch. The door opener is useable as an electric no-load current door opener and as an operating current door opener because a selector device is provided to switch the armature-trimmer system between no-load current movement positions and operating current movement position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.