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:
May. 03, 1994
Filed:
Jun. 18, 1992
Wolfgang Schmitt, Viernheim, DE;
Firma Carl Freudenberg, Weinheim, DE;
Abstract
A cassette seal, comprising an outer ring and an inner ring of an opposing angular profile, which mutually surround an annular space having an imaginary concentric axis. The outer ring is provided with at least one sealing lip abutting on the inner ring. Also a gap connection is provided between the annular space and the space to be sealed off. This gap connection is limited on one side by a flange connected to the inner ring 2. With respect to its cross-section, the gap connection is widened on the side turned away from the flange in segmental cut-outs of the outer ring that are uniformly distributed over the circumference. These segmental cut-outs constitute ducts connecting the annular space and the space to be sealed off. These ducts are limited in the axial direction on the side facing the flange by a conically inclined run-off surface. This run-off surface constitutes a part of a diameter that concentrically surrounds the axis and is extended in a funnel shape in the direction of the annular space. The run-off surface completely surrounds the flange in the axial direction and at least partially surrounds the sealing lip.