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. 30, 1993
Filed:
Oct. 27, 1992
Kimio Uematsu, Tokyo, JP;
Nikon Corporation, Tokyo, JP;
Abstract
A focal-plane shutter apparatus comprises a first plate located on a film-plane side of a mirror box, a second plate located on a film-plane side of the first plate, a third plate located on an opposite side of the first plate to the film-plane side thereof, a vane group comprising a plurality of light shielding thin plates contained between the first plate and the second plate, and a drive arm contained between the first plate and the second plate to drive the vane group, the third plate having a mount portion which is to be fixed to the first plate, a shaft fixed to the third plate, a shutter drive lever rotatably fit to the shaft at one end and connected to the drive arm at an other end, and an urging device for urging the shutter drive lever in a direction of drive of the vane group, in which the first plate has a support portion to support the one end of the shaft and a hole portion for transmitting a displacement of the shutter drive lever to the drive arm.