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:
May. 23, 1978
Filed:
Dec. 15, 1975
Applicant:
Inventor:
Sachio Ohmori, Yokohama, JA;
Assignee:
Nippon Kogaku K.K., Tokyo, JA;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G03B / ;
U.S. Cl.
CPC ...
354152 ; 354156 ;
Abstract
The invention presents a mirror driving device for a single lens reflex camera. The energy during the ascension of the mirror is absorbed to utilize it as the energy for the descent of the mirror, and then this energy is substantially absorbed to utilize it as the energy for the ascending operation at the phototaking step during the lowering operation of the mirror. The energy loss due to the friction is supplemented from an external source for efficiently processing the ascending and descending operations.