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:
Jan. 17, 1995
Filed:
Feb. 08, 1993
Murata Manufacturing Co., Ltd., Kyoto, JP;
Abstract
A piezoelectric bimorph type actuator which, given a constant applied voltage, is capable of greater displacement without suffering from the problem of generating a smaller force of displacement or increasing the actuator size. The piezoelectric bimorph type actuator which is cantilevered, includes an electrode plate, a pair of piezoelectric plates provided on both sides of the electrode plate, and a voltage source for applying a voltage between each piezoelectric plate and the electrode plate so as to displace a free end thereof, wherein a ratio t.sub.2 /t.sub.1 between the thickness t.sub.2 of the electrode plate and the thickness t.sub.1 of each piezoelectric plate is set to be 0.42-1.11 times as much as a ratio E.sub.2 /E.sub.1 between the Young's modulus E.sub.2 of the electrode plate and the Young's modulus E.sub.1 of each piezoelectric plate.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile