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:
Jan. 29, 2013
Filed:
Mar. 23, 2010
Makoto Furuhata, Matsumoto, JP;
Akinori Yamada, Ina, JP;
Yuji Hamayama, Tokai, JP;
Epson Toyocom Corporation, Tokyo, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
A flexural vibration piece including a vibrator having a first region on which a compressive stress or a tensile stress acts and a second region on which a tensile stress acts when a compressive stress acts on the first region and a compressive stress acts when a tensile stress acts on the first region, and performs flexural vibration in a first plane; and a heat conduction path formed of a material having a thermal conductivity higher than the vibrator and that thermally connects the regions, wherein when m is the number of heat conduction paths, ρis the thermal resistivity of the heat conduction path, ρis the thermal resistivity of the vibrator, tis the thickness of the vibrator in a direction orthogonal to the first plane, and tis the thickness of the heat conduction path, a relationship of t≧(1/m)×tv×(ρ/ρ) is satisfied.