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:
Apr. 01, 2008
Filed:
May. 24, 2002
Applicants:
Iwan Antufjew, Wohnsitz, DE;
Marko Schrödter, Wohnsitz, DE;
Stefan Beetz, Wohnsitz, DE;
Inventors:
Assignee:
Continental AG, Hannover, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04B 39/10 (2006.01);
U.S. Cl.
CPC ...
Abstract
In order to achieve a high level of impermeability with a low closing force for the sealing elements of a multistage piston compressor, the overflow channel () in the valve piston () opens into at least two passages () and the sealing plate of the overflow check valve () that is located in the valve piston () is configured as a freely guided closing membrane () with a limited stroke. The passages () of the overflow channel () have different diameters, are arranged on a graduated circle at a radial distance from the axis of the closing membrane () and are completely covered by the closing membrane ().