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:
Jul. 09, 2002
Filed:
Jun. 15, 2000
Dae Hyun Jeong, Kyungki-Do, KR;
Samsung Electro-Mechanics Co., Ltd., Kyunkgi-Do, KR;
Abstract
A method for surface processing of sintered oilless bearing and an apparatus thereof are disclosed by which method the efficiency of covering the pores and the surface roughness of protuberance that is nonporous surface may be improved by means of surface processing of inner diameter surface at time of sizing process using a correcting rod where many correction grooves have been formed on its top part. The invention has features that it may improve the efficiency of covering the pores formed on surface and the surface roughness of sintered oilless bearing's inner diameter surface contacting the shaft, by way of passing the bearing through many correction grooves formed in longitudinal direction on outer circumferential surface of protuberance correction part which is upper part of said correcting rod while at the same time the bearing sintered after compression molding is sized using a sizing device composed of correcting rod and upper and lower punches and that the invention precludes abrasion by reducing the force of friction with shaft in motor applying such sintered oilless bearing so that motor performance reliability may be substantially enhanced.