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:
Aug. 25, 1987
Filed:
Apr. 08, 1986
Antti-Jussi Heilala, Jarvenpaa, FI;
Oy Safematic Ltd., Muurame, FI;
Abstract
A slide ring seal for sealing the gap between a rotatable shaft (1) and a fixed wall (2) to separate a space (3) for a pressure fluid from the external space (4). The slide ring seal comprises at least one seal ring (5) mounted on a fixed wall or a shaft and at least one face ring (6) secured to said shaft or fixed wall. The seal ring and face ring are provided with sealing slide surfaces that are axially pressed against one another. Moreover, the seal ring is mounted on said fixed wall or shaft through a bellows member (7). To achieve a slide ring seal being reliable in operation and having controlled sealing properties, the bellows member (7) is isolated from the space (3) for the pressure fluid by means of a sealed space (9). Said sealed space (9) is further connected to a regulable pressure source (11) by means of a conduit (10).