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:
Nov. 25, 1997
Filed:
May. 29, 1996
Nikon Corporation, Toyko, JP;
Abstract
A shutter has a cylindrical take-up member rotatable about the central shaft thereof, and a thin board having one end portion thereof fixed to the outer peripheral surface of the take-up member and deformable into a state rolled on the outer peripheral surface of the take-up member and having a spring force for returning to a flat state. The thin board is capable of operating between a liberating position in which in conformity with the rotated position of the take-up member, it is rolled onto the take-up member and retracts from a predetermined optical path to thereby permit the passage of light in the optical path and an intercepting position in which it is unrolled from the take-up member and assumes a flat shape and protrudes into the predetermined optical path to thereby intercept the light.