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:
Aug. 22, 2000
Filed:
Apr. 07, 1998
Applicant:
Inventor:
Jun Tamai, Yokohama, JP;
Assignee:
Canon Kabushiki Kaisha, Tokyo, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H02N / ;
U.S. Cl.
CPC ...
31032311 ; 31032315 ;
Abstract
A vibration type driving device includes a vibration element by which vibration is excited, and a contact element brought into contact with the vibration element and relatively moved by the vibration. One of two opposing slide portions of the vibration and contact elements is made of an alumina ceramic containing an additive except alumina, and the other one of the two opposing slide portions is made of an iron-based material. An apparatus using this vibration type driving device is also disclosed.