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:
Jun. 03, 2014
Filed:
Jun. 10, 2009
Applicants:
Hannes Kamecke, Frechen, DE;
Wolfgang Giebmanns, Erftstadt, DE;
Dirk Schiller, Huerth, DE;
Inventors:
Assignee:
OERLIKON LEYBOLD VACUUM GmbH, Cologne, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F04B 49/24 (2006.01);
U.S. Cl.
CPC ...
Abstract
A vacuum pump, in particular a pump of the type with rolling bodies, includes rotary bodies () arranged in a suction chamber (). The pressure side () of the pump is connected to the suction side () by a connecting channel (). In the connecting channel (), a valve () is arranged which closes a through opening (). On exceeding a set pressure difference between the pressure side () and the suction side (), the valve opens automatically. In order to reduce the necessary space and to reduce the switching noise from the valve, the valve body is embodied as a valve flap ().