Heat motor

Details Heat motor Heat motor

1990-02-13

1991-06-04

Ostrager, Allen M.

Power plants

Motor operated by expansion and/or contraction of a unit of...

Mass is a solid

60527, F03G 706

Patent

active

050203258

ABSTRACT:
A heat motor includes a chamber containing a thermally expansible material and an electrical heating element within the expansible material, wherein the expansible material is interposed between all significant surfaces of the electrical heating element and walls of the heat motor defining the chamber. Electrical leads for the electrical heating element extend out of the chamber through a glass plug mounted in a bottom wall of the heat motor. The bottom wall is connected to a side wall of the heat motor by crimping the side wall under the bottom wall to form a flange and to compress an elastomeric seal between the bottom wall and a shoulder of the heat body above the bottom wall. In one embodiment, the electrical heating element includes electrically conducting plates which receive the electrical leads in a plug-in connection. The electric resistance element is a thermistor having a positive temperature coefficient or a thin film resistor having a resistance film substantially covering two opposite sides to maximize heat transfer area.

REFERENCES:
patent: 3430440 (1969-03-01), Pouliot
patent: 3500634 (1970-03-01), Waseleski, Jr. et al.
patent: 3696611 (1972-10-01), Noakes et al.
patent: 3860169 (1975-01-01), Norman
patent: 4685651 (1987-08-01), Nouvelle et al.

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