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. 23, 2005
Filed:
Apr. 05, 2002
Yukihisa Takeuchi, Nishikamo-Gun, JP;
Hiroyuki Tsuji, Nagoya, JP;
Kazumasa Kitamura, Itinomiya, JP;
Nobuo Takahashi, Owariasahi, JP;
Yukihisa Takeuchi, Nishikamo-Gun, JP;
Hiroyuki Tsuji, Nagoya, JP;
Kazumasa Kitamura, Itinomiya, JP;
Nobuo Takahashi, Owariasahi, JP;
NGK Insulators, Ltd., Nagoya, JP;
Abstract
A piezoelectric/electrostrictive actuator includes a plurality of piezoelectric/electrostrictive elements arranged in comb teeth-like alignment on a base plate. The actuator is driven by means of dislocation of the piezoelectric/electrostrictive elements. The cell driving type actuator is characterized in that each of the cells is formed independently from adjacent cells by positioning cover plates between two adjacent piezoelectric/electrostrictive elements. Thus, there is provided a piezoelectric/electrostrictive actuator wherein a heating process at a high temperature can be applied and mass production at low cost is possible. The actuator includes cells with slit portions having a width of 60 μm or less and a high aspect ratio and can be activated with high electric field strength, and great displacement can be obtained with small electric field strength.