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:
Sep. 06, 1977
Filed:
Sep. 26, 1975
Nobuyoshi Inoue, Kawagoe, JA;
Munetaka Shimizu, Kawagoe, JA;
Copal Company Limited, , JA;
Abstract
A mechanical exposure controlling means for electric shutters comprising a front blade actuating lever, a rear blade actuating lever, and a mechanical exposure controlling lever and bulb controlling lever which can be brought to a position in which they are engageable with the rear blade actuating lever so that, when said mechanical exposure controlling is brought to the position in which it is engageable with the rear blade actuating lever, an exposure may be made only at a specific shutter speed and, when said bulb controlling lever is brought to the position in which it is engageable with the rear blade actuating lever, a bulb exposure may be made. When the mechanical exposure controlling lever and bulb controlling lever are brought to the position in which they can be engaged with the rear blade actuating lever, the exposure time controlling circuit will be cut off from the current source battery.