Thermostatic control devices
US4685651A · kind A · utility
13Cited by
6References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 7, 1985 |
| Grant date | Aug 11, 1987 |
| Priority date | — |
| Expiry date | Jun 7, 2005 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05D23/1921
- WIPO fieldControl
- WIPO sectorInstruments
Abstract
A capsule of a thermic control device contains a substance which expands when heated by an electrical resistor to displace a piston. Devices are disclosed wherein the capsule is disposed transversely in a pipe which carries a circulating fluid, and the front and rear ends of the capsule are sealingly affixed in opposed openings in the wall of the pipe. In one such embodiment, the pipe has two fluid channels; the capsule lies in one channel; and, the piston actuates a valve which is disposed in the other channel.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.