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:
Nov. 10, 2009
Filed:
Mar. 27, 2006
Masahiro Kirigaya, Kyotanabe, JP;
Masahiro Sato, Nara, JP;
Youhei Ishigami, Shijonawate, JP;
Kazuo Sawada, Katano, JP;
Minoru Kurosawa, Yokohama, JP;
Masahiro Kirigaya, Kyotanabe, JP;
Masahiro Sato, Nara, JP;
Youhei Ishigami, Shijonawate, JP;
Kazuo Sawada, Katano, JP;
Minoru Kurosawa, Yokohama, JP;
Panasonic Electric Works Co., Ltd, Osaka, JP;
Tokyo Institute of Technology, Tokyo, JP;
Abstract
In an energy recovery type surface acoustic wave motor, an increase in energy efficiency at the time of energy recovery and supply is achieved by adjusting phase change. A surface acoustic wave motor comprises: a surface acoustic wave substrate; a slider provided with an applied pressure; a driving interdigital electrode connected to an external power supply for generating a driving surface acoustic wave on a surface so as to drive the slider by a frictional force which is generated on a contact surface of the slider with the surface acoustic wave substrate based on the surface acoustic wave and the applied pressure; recovery interdigital electrodes placed forward and backward in the direction of travel of the surface acoustic wave for recovering energy of a surface acoustic wave unused to drive the slider, and for using that energy to generate a surface acoustic wave; and phase adjusting means for matching the phase of a surface acoustic wave generated by the recovery interdigital electrodes to the phase of the driving surface acoustic wave generated by the driving interdigital electrode.