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:
Jun. 29, 1999
Filed:
Jul. 22, 1997
Applicant:
Inventors:
Yutaka Maruyama, Tokyo, JP;
Koji Kitani, Chofu, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02N / ;
U.S. Cl.
CPC ...
310323 ;
Abstract
A long-life vibration wave motor which abrades little and can be driven for long time periods. causes a vibration member to form a vibration wave and thereby moves the vibration member and a contact member in tight contact with the vibration member relative to each other by a frictional force. The vibration wave motor includes a sliding material made from hard particles and a soft metal softer than the hard particles and having a sliding surface obtained by projecting the hard particles by 0.2 to 2 .mu.m from the surface of the soft metal used in one of two contact portions of the vibration member and the contact member.