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:
Feb. 10, 1976
Filed:
Oct. 25, 1974
Eckhard Renner, Achim, DT;
Vereinigte Flugtechnische Werke-Fokker GmbH, Bremen, DT;
Abstract
A machine is constructed from plural elongated elements constructed as tubes or rods with double duct and which are alternatingly cooled and heated past a transition temperature, whereby restauration of the original length occurs during heating under development of force and is effective as work producing stroke, while upon cooling below the transition temperature such element is extended or upset. The elements are resiliently coupled to a crank shaft or to the rotary output of swash plate like machine. Heating and cooling fluid is alternatingly driven through the duct or ducts in the stroke producing elements to obtain periodic extension and contraction which is translated into rotational power.