Automatic temperature and humidity regulation – Cooling radiator – Bypass
Patent
1998-04-06
1999-11-30
Tapolcai, W E
Automatic temperature and humidity regulation
Cooling radiator
Bypass
F01P 714
Patent
active
059927550
ABSTRACT:
A thermostat has a housing having a flange, an actuating rod secured to the housing at a first end thereof, a guide member slidably mounted on the actuating rod, a resilient seal spool provided around a second end portion of the actuating rod and secured to the guide member, a heat sensitive cylinder housing the seal spool and secured to the guide member, wax pellets provided in the heat sensitive cylinder to enclose the seal spool. The flange has a hole so as to pass a coolant, and the thickness of the resilient seal spool being set between 25% and 5% of the diameter of the actuating rod, thereby reducing a spring constant of a return spring of the thermostat.
REFERENCES:
patent: 3776457 (1973-12-01), Cardi
patent: 4353501 (1982-10-01), Brown
patent: 4386584 (1983-06-01), Calkins
patent: 4979671 (1990-12-01), Bigcharles
patent: 5388760 (1995-02-01), Ragan
patent: 5503329 (1996-04-01), Saladino
patent: 5690276 (1997-11-01), Thiel et al.
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