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:
Jul. 25, 1986
Applicant:
Inventors:
Peter Dreschmann, Dittelbrunn, DE;
Wilhelm Walter, Reith, DE;
Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
F16J / ; F16J / ;
U.S. Cl.
CPC ...
277 27 ; 277 50 ; 277 58 ; 277 84 ; 277152 ;
Abstract
An arrangement for sealing a space having therein rotating means, such as a roller bearing, is provided with sealing rings that are spaced along a rotational axis. The inner annular sealing edges of the sealing rings are biased to engage and seal in against seats that are moving relative to the sealing edges. The seats and sealing edges are disposed so that one or the other of the latter lifts off of its seat to permit pressure within the space to equalize automatically with ambient pressure whether the latter rises or falls relative to pressure within the space.