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US 5,033,865 AGranted
Thermo-actuator
OwnerYoshikazu Kuzeinventor
Life of this patent
Estimating the term…
Abstract
A thermo-actuator has a steel rod, a guide member slidably mounted on the rod, a spool seal secured to the guide member, a heat conductive cylinder secured to the guide member, and wax pellets provided in the cylinder. The spool seal has a thin layer, so that the spool seal engages with the rod by a vacuum generated in the spool seal. The thickness of the spool seal is between 5% to 25% of the diameter of the steel rod.
Claims2
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.
4 more elements
Dependencies are inferred from the claim text.