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:
Feb. 02, 1999
Filed:
Dec. 19, 1995
Douglas Von Massey, Norman, OK (US);
Mickey L Love, Oklahoma City, OK (US);
Dana Corporation, Toledo, OH (US);
Abstract
A polymeric based composite bearing is injected molded of a thermoplastic material reinforced with a high strength fiber and reinforcing beads. Typically, the high strength fiber is selected from the group consisting of aromatic polyamide fiber, high strength/high purity glass fiber, carbon fiber, boron fiber, and metallic fibers. The reinforcing spheres are selected from the group consisting of glass beads, boron nitride beads, silicon carbide beads and silicon nitride beads. The thermoplastic matrix material may consist of polyamide, polyacetal, polyphenylene sulfide, polyester and polyimide. Preferably, the composite bearing comprises between about 5 to about 35 percent weight of the high strength fiber, between about 5 to about 15 percent weight percent of the reinforcing spheres, and between about 50 to about 90 weight percent of the thermoplastic matrix material. The bearing may be injection molded by blending the composite material, heating the composite material to a temperature above its melting temperature, injecting the composite material into a mold cavity, and demolding the bearing after the temperature of the bearing drops substantially below the melting temperature.