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. 19, 2007
Filed:
Oct. 30, 2002
Applicants:
Hartmut Kriehn, Köln, DE;
Klaus Rofall, Rösrath, DE;
Manfred Behling, Köln, DE;
Inventors:
Assignee:
Oerlikon Leybold Vacuum GmbH, Cologne, DE;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F01C 21/00 (2006.01); F03C 2/00 (2006.01); F04C 2/00 (2006.01);
U.S. Cl.
CPC ...
Abstract
A screw-type vacuum pump () is tempered such that characteristics of the pump are not substantially altered when the pump is subjected to thermal stress. In order to achieve said aim, cooling is adjusted according to an operating state of the screw-type vacuum pump (), preferably to maintain a substantially constant pump gap ().
Kriehn, Hartmut. (2007). Tempering method for a screw-type vacuum pump (U.S. Patent No. 7232295). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7232295
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile