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:
Oct. 07, 2008
Filed:
Aug. 31, 2004
Mamoru Yasuda, Osaka, JP;
Yasuo Sugimori, Osaka, JP;
Takahisa Ohtsuji, Osaka, JP;
Hosiden Corporation, Osaka, JP;
Abstract
A vibration sensor capable of preventing a diaphragm electrode from being damaged without lowering sensitivity as well as realizing a satisfactory assembling process. The vibration sensor includes a fixed electrode, and a diaphragm electrodehaving a weight memberattached to a membrane surface facing away from the fixed electrodeand fixedly supported at peripheries thereof, the vibration sensor being capable of outputting variation of capacitance between the fixed electrode and the diaphragm electrode as vibration signals. The vibration sensor further includes projecting portionsformed on parts of an end portion of the weight memberto project along the direction of the membrane surface and spaced from the membrane surface of the diaphragm electrode, and a restricting memberfor contacting the projecting portionsof the weight memberdisplaced along the direction of the membrane surface of the diaphragm electrode, thereby to restrict displacement of the weight member