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. 03, 2017
Filed:
Jan. 05, 2012
Applicant:
Werner Schmidt, Chemnitz, DE;
Inventor:
Werner Schmidt, Chemnitz, DE;
Assignee:
Inficon GMBH, Köln, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 25/02 (2006.01); F04B 53/12 (2006.01); F04B 35/04 (2006.01); F04B 5/00 (2006.01); F04B 1/02 (2006.01); F04B 17/04 (2006.01); F04B 25/04 (2006.01); F04B 25/00 (2006.01); F04B 31/00 (2006.01); F04B 39/00 (2006.01); F04B 53/14 (2006.01);
U.S. Cl.
CPC ...
F04B 25/02 (2013.01); F04B 1/02 (2013.01); F04B 5/00 (2013.01); F04B 17/04 (2013.01); F04B 17/046 (2013.01); F04B 25/005 (2013.01); F04B 25/04 (2013.01); F04B 31/00 (2013.01); F04B 35/045 (2013.01); F04B 39/0016 (2013.01); F04B 53/12 (2013.01); F04B 53/122 (2013.01); F04B 53/148 (2013.01);
Abstract
A double-acting refrigerant compressor includes a piston freely guided on two cylinder portions arranged opposite to each other and being immobile relative to each other. The piston includes a flow channel extending internally through the piston. Each cylinder portion and the piston include, along the flow channel, respectively at least one back-check valve. The back-check valves are arranged in such a manner that their flow directions are unidirectional.