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:
Nov. 07, 1989
Filed:
Aug. 25, 1988
Richard M Boyd, St. Louis Park, MN (US);
Quadion Corporation, Minneapolis, MN (US);
Abstract
A high-speed self-lubricating bearing-seal assembly comprised of an annular bearing-seal composed of readily moldable, self-lubricating, plastic material having a pressure velocity value at least equal to 1800 at 100 feet per minute surface speed, and an elastic combined spring and seal member biasing the bearing-seal. The elastic member is located behind the bearing-seal and is formed of a readily flowable rubber-like material, consisting of a combined spring and seal which gently urges the bearing-seal against a sealing surface. The elastic member is generally right-angled polygonal in cross-sectional shape and has concaved sides and convex corners, its minimum radial dimensions between the corners being 60-70% of its maximum radial dimensions. A salient feature of the assembly is that it is a dry bearing-seal, in that no lubrication is required other than that inherent in the bearing-seal member, yet it outlasts other lubricated bearings by a wide margin.