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. 23, 2004
Filed:
Oct. 15, 2002
Masashi Takahashi, Saitama, JP;
Tomoaki Kobayashi, Saitama, JP;
Pentax Corporation, Tokyo, JP;
Abstract
A bearing structure comprises a rotational shaft and a bearing member. The rotational shaft has a pair of flanges, and a small diameter portion provided between the flanges. The flanges have first tapered surfaces. The first tapered surfaces taper down to the diameter of the small diameter portion as the first tapered surfaces approach the small diameter portion. The bearing member has a support groove to support the small diameter portion, and second tapered surfaces formed between the support groove and restraining surfaces connected by the support groove. The small diameter portion is fit in the support groove while the first tapered surfaces are engaged with the second tapered surfaces. A flank is formed on at least one part of the flanges that face each other and at substantially the same circumferential position on the flanges, to form a gap with one of the second tapered surfaces.