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. 21, 1984
Filed:
May. 10, 1982
Akihiko Hashimoto, Tokyo, JP;
Olympus Optical Co., Ltd., Tokyo, JP;
Abstract
A focal-plane shutter comprises first leading and trailing cylinders rotatably disposed on the winding side and fitted with leading and trailing screens, respectively, second leading and trailing cylinders rotatably disposed on the charge side and fitted with the leading and trailing screens, respectively, gears for rotating the first leading and trailing cylinders so that the first leading and trailing cylinders are wound with the leading and trailing screens, respectively, and charge springs for rotating the second leading and trailing cylinders at shutter release so that the second leading and trailing cylinders are wound with the leading and trailing screens, respectively. The first and second leading cylinders are substantially coaxial with said first and second trailing cylinders, respectively.