Heat engine based on shape memory alloys

Details Heat engine based on shape memory alloys Heat engine based on shape memory alloys

1989-12-01

1990-07-03

Ostrager, Allen M.

Power plants

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

Mass is a solid

F03G 706

Patent

active

049380265

ABSTRACT:
A tubular gear made of shape memory alloy in sheet form, having longitudi corrugations and being floatingly supported for rotation about an axis fixedly spaced from the rotational axis of a roller gear in meshing engagement with the corrugations. The tubular gear is sequentially deformed by exposure to radiated heat causing the shape memory alloy to expand circumferentially. Said meshing engagement with roller gear and such deformation of the tubular gear within differential temperature regions established by restricted exposure to the radiated heat; induces and sustains rotation of the tubular gear to convert the heat energy into mechanical energy.

REFERENCES:
patent: 3303642 (1967-02-01), Lee
patent: 4010612 (1977-03-01), Sandoval
patent: 4302938 (1981-12-01), Li
patent: 4683721 (1987-08-01), Shin et al.

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