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:
Jan. 11, 1994
Filed:
Jul. 12, 1993
Toru Kameyama, Tokyo, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
In a dynamic pressure bearing apparatus for use in a rotary polygonal mirror type light deflector in a laser beam printer, a rotary head in a video tape recorder and the like, the apparatus includes a rotary shaft having a shaft end surface, a sleeve for rotatably supporting the rotary shaft through fluid, and a generator for generating dynamic pressure in a thrust direction. The sleeve has an end portion with a thrust receiver surface opposed to the shaft end surface. The dynamic pressure generator is formed on the thrust receiver surface. One of either the shaft end surface and the thrust receiver surface is convexly shaped for tolerating a non-flat surface of the shaft end surface and the thrust receiver surface.