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:
Dec. 13, 1994
Filed:
Feb. 24, 1994
Toru Nakanishi, Nagano, JP;
Hisaya Nakagawa, Nagano, JP;
Kabushiki Kaisha Sankyo Seiki Seisakusho, Nagano, JP;
Abstract
An object of this invention is to provide a bearing device for an electric motor in which a bearing holder holding an oil-impregnated bearing provides good area contact from the beginning and can be readily formed with high productivity. In the bearing device for an electric motor in which a bearing-supporting cylindrical recess is formed in one end face of a bearing holder in the form of a hollow cylinder, and an oil-impregnated bearing having a shaft-inserting hole is fixedly fitted in the bearing-supporting cylindrical recess in such a manner that the shaft-inserting hole of the oil-impregnated bearing is inclined with respect to the central axis P of the bearing holder; the bearing-supporting cylindrical recess of the bearing holder is defined by a cylindrical surface whose diameter is slightly smaller than the outside diameter of the oil-impregnated bearing and which is in parallel with the central axis P of the bearing holder, and an abutting annular surface inclined with respect to the central axis P, and the oil-impregnated bearing is arranged inclined in the bearing-supporting cylindrical recess being abutted against the abutting annular surface.