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:
Aug. 25, 2009
Filed:
Apr. 20, 2006
Applicant:
Carl C. Petersen, Mentor, OH (US);
Inventor:
Carl C. Petersen, Mentor, OH (US);
Assignee:
Channel Products, Inc., Chesterland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H01L 41/04 (2006.01); H01L 41/08 (2006.01);
U.S. Cl.
CPC ...
Abstract
A piezoelectric actuator that can be operated in the d31 mode and which controls the potential energy of a spring is disclosed. The d31 mode of operation provides large actuator displacement and the potential energy of the spring significantly increases the force and work produced by the actuator. In a first embodiment, a single piezoelectric element, operating in the d31 mode, controls the potential energy of the spring. In another embodiment, two piezoelectric elements, both operating in the d31 mode, control the potential energy of the spring.