Radial shaft sealing ring

Details Radial shaft sealing ring Radial shaft sealing ring

2011-05-10

2011-05-10

Patel, Vishal (Department: 3676)

Seal for a joint or juncture

Seal between relatively movable parts

Circumferential contact seal for other than piston

C277S572000

Reexamination Certificate

active

07938405

ABSTRACT:
A radial shaft sealing ring, especially for use together with a CO2containing pressure medium, comprises a membrane body (1) and a supporting body (2). A centering element (5) having a radially outer edge (6) is disposed on the supporting body (2) and is not covered by the membrane body (1). The membrane body (1), on its radially inner end, comprises a tilted sealing lip (11) which faces away from the supporting body (2). The supporting body (2) has an axial bore for the shaft (8) and, opposite the sealing lip (11), a supporting face (13) which slopes towards the wall (12) of the bore. The invention is characterized in that the centering element (5), when the radial shaft sealing ring is fitted in a bearing house (4), can be contacted with the interior of the bearing housing (4) in a press fit and that the angle (α) between the supporting face (13) and the wall (12) of the bore of the supporting body (2) ranges between 45° and 55° in a central plane which includes the axis of the radial shaft sealing ring.

REFERENCES:
patent: 3653672 (1972-04-01), Felt
patent: 5163692 (1992-11-01), Schofield et al.
patent: 3738512 (1989-05-01), None
patent: 19841123 (2000-04-01), None
patent: 20115033 (2002-01-01), None
patent: 2261920 (1993-02-01), None
patent: 2000-161499 (2000-06-01), None
patent: 2000-240805 (2000-09-01), None
patent: 2004-019798 (2004-01-01), None
Search report—German Patent and Trademark Office, Mar. 2, 2009, cognate application K550287DE.

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