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:
Apr. 06, 2010
Filed:
Sep. 04, 2007
Yoshinori Hayashi, Iwata, JP;
Hideo Suzuki, Hamamatsu, JP;
Emiko Suzuki, Legal Representative, Hamamatsu, JP;
Yoshinori Hayashi, Iwata, JP;
Hideo Suzuki, Hamamatsu, JP;
Emiko Suzuki, legal representative, Hamamatsu, JP;
Yamaha Corporation, Hamamatsu-shi, JP;
Abstract
In order to realize a small and light key actuating apparatus for actuating a key which is rotatably supported with respect to a frame, a key actuating apparatus () is provided which includes a polymer transducer () for rotatably moving the key () by using a deformation of the transducer, wherein the transducer which is substantially formed in a plate shape includes: a polymer film () which is dielectric and made from an elastically deformable polymer material; and a pair of electrodes () arranged at both sides of surfaces of the polymer film, and the transducer is deformed corresponding to switching between an application of voltage and a lack of voltage between the electrodes.