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:
Mar. 19, 1985
Filed:
Mar. 21, 1983
Wan C Wong, North Point, HK;
Shigeru Oshima, Tokyo, JP;
W. Haking Enterprises Limited, Hong Kong, HK;
Abstract
An electronic shutter mechanism for a still camera comprises a shutter blade, preferably carrying a solenoid armature, urged by a first spring into an initial lens aperture closing position. An initially latched actuating member for moving the shutter blade to a lens aperture exposing position carries a normally energized solenoid coil to attract the shutter blade carried armature thereto so that the shutter blade moves with the actuating member until the coil is deenergized. When the actuating member is unlatched, a second spring urges the actuating member and the shutter blade magnetically attached thereto into a lens aperture opening position against the return force of the first spring. Upon the unlatching of the actuating member a timing circuit establishes a timing period depending upon the amount of ambient light, after which the solenoid coil is deenergized so the first spring returns the shutter blade quickly to a lens aperture closing position.