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:
Oct. 31, 1978
Filed:
Jan. 25, 1977
Applicant:
Inventor:
Edgard Grundmann, Fallersleben, DE;
Assignee:
Volkswagenwerk Aktiengesellschaft, Wolfsburg, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01B / ; F01B / ; F16J / ;
U.S. Cl.
CPC ...
91180 ; 92 37 ; 92 73 ; 417473 ; 64 2 / ;
Abstract
A vapor engine using a refrigerant as its working medium and having a number of bellows each forming an expansion chamber which receives the working medium and changing its volume under the influence of the pressure exerted by the vaporized working medium. A crank shaft is arranged above and is mechanically connected to each of the bellows, and a rotary slide is provided below the bellows for controlling the flow of the working medium to and from the bellows.