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:
Apr. 22, 1980
Filed:
Aug. 16, 1978
Masaaki Nakai, Nara, JP;
Yasuzi Kogure, Kawanishi, JP;
Masayoshi Sahara, Sennan, JP;
Toshio Kobori, Sakai, JP;
Minolta Camera Kabushiki Kaisha, Osaka, JP;
Abstract
In a still or motion picture camera including an electric circuit such as a light measuring circuit, an exposure control circuit, a sound recording circuit, or a capstan driving circuit, the shutter release button is provided with a piezo-electric element for developing an electric charge or potential difference when an external pressure is applied thereon. The pressure responsive piezo-electric element is connected in the electric circuit in response to the pressure applied on the pressure responsive element, whereby the electric circuit is enabled prior to the commencement of the exposure.