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:
Sep. 22, 1987
Filed:
Mar. 26, 1986
Applicant:
Inventors:
Hans-Peter Caspar, Troisdorf, DE;
Gunter Schutz, Cologne, DE;
Assignee:
Leybold-Heraeus GmbH, Cologne, DE;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
F04D / ;
U.S. Cl.
CPC ...
415 90 ; 415109 ; 415111 ; 415180 ; 384476 ; 384489 ; 384900 ;
Abstract
The invention relates to a turbomolecular vacuum pump (1) with a rotor (6) and at least one antifriction bearing (17) for the rotor, the stationary ring (19) of the antifriction bearing being seated on the wall of a sleeve (21) which in turn is supported through at least two O-rings (26, 27) made from an elastic material on a casing section (13) of the pump. To improve the heat flow from the sleeve (21) to the casing (13) of the pump, the annular space (29) formed by two seal rings (26, 27), the sleeve (21) and the pump casing (13) is filled with a medium (31) promoting heat flow from the sleeve to the adjacent part of the casing.