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. 04, 1990
Filed:
Jun. 08, 1989
Keith W Katahara, Allen, TX (US);
Atlantic Richfield Company, Los Angeles, CA (US);
Abstract
A piezoelectric transducer includes a stack of plates of piezoelectric material which are energized to elongate in a predetermined direction and to provide amplified mechanical displacement to a drive member through a set of levers. The levers are connected at one end to a frame supporting the transducer, are provided with hinges between the point of connection and a point of engagement with the piezoelectric actuator and are also connected at their opposite ends to the drive member. The lever arms provide amplified linear displacement to the drive member in response to energization of the actuator. The lever arrangement also provides for exertion of high compressive forces on the piezoelectric actuator in response to a low force, large displacement-causing signal.