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:
Dec. 07, 1999
Filed:
Jul. 30, 1997
Seiko Precision Inc., , JP;
Abstract
A focal plane shutter has a base plate provided with a shutter opening, opening and closing sector groups each having a plurality of sectors, and a plurality of arms each having one end pivotally supported on the base plate so as to pivotally connect and support the sectors through connecting pins to form a parallel link mechanism. Each of the connecting pins has a tapered portion or a flange having a diameter small enough to prevent the action of each sector from being hindered when any of the sectors becomes interposed between any of the remaining sectors or an arm supporting the sector and any of the other sectors. Each of the arms may also have a reduced thickness portion proximate the connecting pin corresponding thereto to thereby prevent movement of the interposed sector from being hindered.