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:
Jul. 27, 1999
Filed:
Aug. 07, 1997
Applicant:
Inventor:
Heinrich Lotz, Wetzlar, DE;
Assignee:
Pfeiffer Vacuum GmbH, Asslar, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01D / ;
U.S. Cl.
CPC ...
415 90 ;
Abstract
A double-flow gas friction pump including a shaft supported in the pump housing and extending at a right angle to an axis of the suction port, a rotor fixedly secured on the shaft for joint rotation therewith, a stator fixedly secured in the housing and cooperating with the rotor for pumping gas, and a discharge element located in the suction region of the pump and operatively connected with the shaft for joint rotation with the shaft and the rotor for conducting the gas from the suction port directly to the stator and the rotor.
Lotz, Heinrich. (1999). Double-flow gas friction pump (U.S. Patent No. 5927940). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/5927940
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile