Accession Number : ADD014624

Title :   Heat Engine Based on Shape Memory Alloys.

Descriptive Note : Patent, Filed 1 Dec 89, patented 3 Jul 90,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Goldstein, David

Report Date : 03 Jul 1990

Pagination or Media Count : 6

Abstract : A tubular gear made of shape memory alloy in sheet form, having longitudinal 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 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. Patents. (js)

Descriptors :   *ALLOYS, ENERGY, EXPOSURE(GENERAL), GEARS, HEAT, HEAT ENGINES, LIMITATIONS, MECHANICAL ENERGY, MEMORY DEVICES, PATENTS, RADIATION, REGIONS, ROLLERS, ROTATION, SHAPE, TEMPERATURE, TUBULAR STRUCTURES

Subject Categories : Metallurgy and Metallography

Distribution Statement : APPROVED FOR PUBLIC RELEASE