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. 09, 1991
Filed:
Nov. 28, 1989
Ingvar Johansson, Lilla Edet, SE;
Volvo Hydraulik AB, Trollhattan, SE;
Abstract
A device for sealing the gap between a substantially cylindrical outer surface of a body and a coaxially surrounding and substantially cylindrical wall surface against a fluid pressure, particularly hydraulic liquid pressure, which pressure is greater on one side of the device than on the other, comprising a peripheral groove made in one of said cylindrical surfaces and in which is inserted at least one slotted sealing ring having an edge surface which resiliently and sealingly engages a portion of the other cylindrical surface radially opposite to the peripheral groove, the one surface and the other surface being mutually static and/or rotatable and/or axially movable as well as arranged with comparatively great radial play, a non-slotted support ring being mounted at the low-pressure side of the slotted sealing ring. For obtaining an effective sealing action in spite of said radial play between the surfaces, the non-slotted support ring is mounted with smallest possible clearance to the other surface and extends partialy into the peripheral groove in the one surface, the slotted sealing ring furthermore having a required great play relative to the peripheral groove bottom in view of the radial gap between the surfaces.