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:
Jul. 05, 1994
Filed:
Nov. 04, 1992
Tadashi Nakagawa, Chiba, JP;
Seikosha Co., Ltd., Tokyo, JP;
Abstract
A motor driven shutter has diaphragm blades and shutter blades controlled by a single motor. The shutter comprises a driving member actuated by the motor, a diaphragm member for setting the diaphragm blades to a predetermined position via the driving member by the forward rotation of the motor, a closing member for operating the diaphragm blades to a closed position, and shutter blades urged in an open direction. The driving member sets the diaphragm blades to a predetermined position and further releases the shutter blades upon motor rotation in the reverse direction in a diaphragm setting process. The driving member closes the diaphragm blades by releasing the engagement of the closing member in the succeeding operation of the motor.