Thermally actuated valve
US4025042A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 22, 1975 |
| Grant date | May 24, 1977 |
| Priority date | — |
| Expiry date | Sep 22, 1995 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA47J31/106
- WIPO fieldFurniture, games
- WIPO sectorOther fields
Abstract
A thermally actuated valve assembly comprising a housing having a passage extending therethrough with the passage having an inlet, an outlet and a valve seat therebetween. A thermostatic dish-shaped bimetallic disk constituting a valve member is positioned in the passage and is abruptly movable over center from a first curvature position in which the outer periphery of the disk is in engagement with the valve seat thereby to block communication through the passage and a second curvature position in which the disk is clear of the valve seat to permit the flow of fluid therepast. The disk is movable from its first to its second curvature position upon being subjected to a first temperature and is returnable from its second to its first curvature position upon being subjected to a second temperature. A spring member biases the disk toward the valve seat and holds the disk in sealing engagement therewith when the disk is in its first curvature position. The housing includes an abutment engageable by the center portion of the disk as the disk moves over center from its first to its second curvature position thereby to insure that the periphery of the disk moves clear of the valve seat.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.