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:
Feb. 03, 1987
Filed:
May. 14, 1985
Noboru Kobayashi, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A stacked type piezo-electric element device in accordance with the present invention includes stacked type piezo-electric elements constructed by stacking a plurality of piezo-electric elements with electrodes on both sides, a plurality of voltage impression circuits prepared corresponding to respective piezo-electric elements for supplying a voltage to each electrode of the piezo-electric elements, a power source which connects the voltage impression circuits in parallel, and circuit breaker elements which, when the current that flows in at least one of the voltage impression circuits exceeds a predetermined value, interrupt the current flowing in the voltage impression circuit that exceeds the predetermined value.