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Thermo-actuator

  • US 5,033,865 A
  • Filed: 03/23/1990
  • Issued: 07/23/1991
  • Est. Priority Date: 11/24/1987
  • Status: Expired due to Term
First Claim
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1. A thermo-actuator comprising:

  • a rod;

    a guide member slidably mounted on said rod;

    a spool seal secured to said guide member at an end portion thereof;

    a heat conductive cylinder secured to said guide member and surrounding said spool seal; and

    wax pellets provided within at least a portion of said cylinder;

    wherein said spool seal has a thickness between 5% to 25% of the diameter of said rod.

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