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:
Mar. 24, 1998
Filed:
Dec. 26, 1995
Kazuo Hirose, Yokkaichi, JP;
Takashi Minami, Kuwana, JP;
NTN Corporation, Osaka, JP;
Abstract
A slide bearing, a slide bearing assembly and a small motor with a slide bearing assembly which are comparable to or even better than conventional sintered oil-impregnated bearings in mechanical strength, stability of friction coefficient, and which are small and lightweight. The bearing assembly includes a housing having a circular hole and a through hole for supporting a rotary shaft and integrally formed from a resin composition comprising 20-40% by weight of a synthetic resin such as polyphenylene sulfide, 20-60% by weight of an inorganic filler such as mica, 10-30% by weight of a fibrous reinforcing material such as carbon fiber, 3-7% by weight of a lubricating oil such as fatty acid ester oil, and 1-5% by weight of an oil retaining material such as talc. There is also provided a slide bearing formed from the same resin composition as above. There is also provided a small motor having the above slide bearing assembly, a stator carried by the housing of the bearing assembly, and a rotor having a rotary shaft supported by the slide bearing of the bearing assembly.