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. 04, 1996
Filed:
Jul. 19, 1994
Applicant:
Inventor:
Mitsumasa Okubo, Hachioji, JP;
Assignee:
Olympus Optical Co., Ltd., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G03B / ; G03B / ;
U.S. Cl.
CPC ...
354400 ; 354286 ;
Abstract
The present invention provides, on the camera body side thereof, a pulse signal generator for generating continuous pulse signal trains, the frequency of which is four times the frequency employed for driving a supersonic motor and a pulse width which corresponds to the pulse width of an AC voltage for driving the supersonic motor. Furthermore, a unit detachable from the camera body and including the supersonic motor generates the AC voltage for driving the supersonic motor which corresponds to the pulse signal.