Door closer having sound generating function
US4763111A · kind A · utility
35Cited by
5References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 5, 1985 |
| Grant date | Aug 9, 1988 |
| Priority date | — |
| Expiry date | Sep 5, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG08B3/10
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A door closer which is capable of issuing a selected sound or remaining silent when the associated door is opened and which can be mounted on an existing door opener mechanism. Two covers are provided which are mounted on opposite ends of a door closer mechanism body. One of the two covers carries a speaker, while the other carries a sound generating circuit, sensors, and a changeover switch. The changeover switch is used for selecting among, for instance, an alarm sound, a melody chime, and silence. An operating lever for the changeover switch extends through the cover to the outside for ease of selection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.