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US 4,379,018 AGranted
Heat transfer apparatus
AssigneePlanet Products Corporation
InventorCarl P. Griesdorn
Life of this patent
Estimating the term…
Abstract
A heat transfer apparatus includes a dome type enclosure member with a heating element internally mounted within a dome formed within the member. The diaphragm cooperatively forms a variable volume chamber with the enclosure member and is movable toward the heating element under the impetus of atmospheric air as air is evacuated from chamber.
Claims15
A heat transfer apparatus, comprising:
- (a) a dome type enclosure member with a peripheral sealing surface, said enclosure member including an internal top portion that is in spaced relationship to the peripheral sealing surface;
- (b) a heating element secured to the internal top portion of the enclosure member in spaced relationship to the peripheral sealing surface;
- (c) a diaphragm in selective sealing relationship with the peripheral sealing surface and exposed to atmospheric pressure on one of its sides, the diaphragm cooperating with the enclosure member to define an internal chamber with the other of its sides;
- and
- (d) a tool buildup secured to the diaphragm, the tool buildup being disposed within the internal chamber when the peripheral sealing surface is in sealing relationship with the diaphragm.
2 more elements
Dependencies are inferred from the claim text.