The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 03, 1990
Filed:
Dec. 01, 1989
David Goldstein, Adelphi, MD (US);
The United States of America as represented by the Secretary of the Navy, Washington, DC (US);
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.