Automatic temperature and humidity regulation – Thermostatic – With pressure control
Patent
1991-12-19
1993-03-30
Tapolcai, William E.
Automatic temperature and humidity regulation
Thermostatic
With pressure control
137 72, 251 635, G05D 2700
Patent
active
051976714
ABSTRACT:
A thermally activated pressure relief valve includes a valve housing with an inlet communicating with an interior of a pressure vessel, and a passage from the inlet, through the housing, to an outlet for communicating with the exterior of the housing. A seal plug is disposed within a cavity of the housing and across the passage for sealing the passage. A thermal trigger engages the seal plug within the cavity to restrict movement of the seal plug and maintain a seal of the passage when a temperature adjacent to the housing is below a predetermined temperature threshold. The thermal trigger releases the seal plug, which is movable within the cavity, allowing the seal plug to relocate within the cavity when the temperature reaches the predetermined temperature threshold, thereby exposing a flow path between the inlet and outlet through which gas can escape.
REFERENCES:
patent: 3263929 (1966-08-01), Seablow
patent: 3618627 (1971-11-01), Wagner
patent: 3791450 (1974-02-01), Poitras
patent: 3842853 (1974-10-01), Kelly et al.
patent: 4221231 (1980-09-01), Harvey et al.
patent: 4352365 (1982-10-01), Boccardo et al.
patent: 4403627 (1983-09-01), Bradley
patent: 4922944 (1980-05-01), Mueller et al.
Baird Michael R.
Wass Lloyd G.
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