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Thermally controlled oil storage reservoir for a transmission

  • US 4,217,926 A
  • Filed: 11/29/1978
  • Issued: 08/19/1980
  • Est. Priority Date: 11/29/1978
  • Status: Expired due to Term
First Claim
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1. A thermally controlled oil storage reservoir for a transmission comprising;

  • a transmission housing;

    a primary oil reservoir disposed below said transmission housing;

    a source of oil pressure and passage means for said transmission including an oil return passage;

    a storage reservoir in communication with said return passage, disposed on said transmission housing above said primary oil reservoir and having aperture means in communication with said primary oil reservoir;

    flow control means for closing said aperture means to control oil flow from said storage reservoir to said primary reservoir; and

    thermostatic element means for applying a force to said flow control means urging said flow control means toward closing said aperture means with said force increasing with increasing oil temperature and the pressure head of oil in said storage reservoir urges said flow control means in an opening direction whereby the level of oil in said storage reservoir increases with increasing oil temperature prior to opening of said flow control means to permit oil to return through said aperture means to said primary oil reservoir.

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