Automatic temperature and humidity regulation – Thermostatic – In fluid controlled
Patent
1998-08-17
1999-12-21
Tapolcal, William E.
Automatic temperature and humidity regulation
Thermostatic
In fluid controlled
236101E, 428616, G05D 2308
Patent
active
060037784
ABSTRACT:
An oil level control valve (10) has a molded base (12) having an oil receiving aperture (12d) formed through a bottom wall (12e) with a circumscribing generally rectangular cover plate seat in which a cover plate (14) is removably received. A thermostatic element (16) in the form of a generally rectangular sheet is fastened to posts (12f) extending upwardly from sidewalls of the base by means of peg portions (12g, 12h) received through holes in the sheet and heat staked to the posts. The thermostatic element allows the cover plate to move away from the seat for optimum oil flow at low temperature conditions and restricts the valve opening as temperature of the oil increases to accommodate an increase in oil volume due to expansion in order to maintain the fluid level in the main sump of a transmission housing by allowing an increase in the fluid level of an auxiliary sump in accordance with target values for different flow rates. A second embodiment (10') shows the addition of a snap-on bracket (20) for convenient mounting of the control along with an associated installation tab (12k) for handling purposes.
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Gondusky Joseph M.
White Alfred J.
Baumann Russell E.
Donaldson Richard L.
Tapolcal William E.
Texas Instruments Incorporated
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