Pneumatically and temperature controlled valve construction

Details Pneumatically and temperature controlled valve construction Pneumatically and temperature controlled valve construction

1977-10-25

1980-01-01

Frazier, Roy D.

Automatic temperature and humidity regulation

Motors

Fluid-operated

137599, 137DIG8, 236 48R, 236101C, G05D 2310

Patent

active

041812549

ABSTRACT:
A pneumatically and temperature controlled valve construction adapted for interconnecting a pneumatic source to a pneumatically operating device when said construction senses one of a pair of certain values of vacuum and a certain temperature regardless of whether the others being sensed or not being sensed. The construction includes a single housing, a pair of vacuum operated valve means nested in the housing and a temperature operating valve means nested in the housing.

REFERENCES:
patent: 2809620 (1957-10-01), Boylan
patent: 3829011 (1974-08-01), Scott
patent: 4061265 (1977-12-01), Kitamura
patent: 4068800 (1978-01-01), Doherty, Jr.
patent: 4087965 (1978-05-01), Thornburgh

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