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:
Jun. 27, 2000
Filed:
Sep. 24, 1999
Koichi Itoigawa, Aichi, JP;
Yutaka Yoshida, Aichi, JP;
Abstract
A acceleration actuated microswitch that accurately detects accelerations in various directions is provided. A mass is supported by first beams in a space defined in a silicon substrate. The mass can be reciprocated in a direction perpendicular to the silicon substrate. A pair of second beams extend from the mass. Each second beam includes an electrode layer. A cover is secured to the silicon substrate. A pair of steps are formed in the inner surface of the cover. A pair of fixed contacts is located on each step. Each pair of contacts faces a corresponding electrode layer. When an acceleration having a certain magnitude is applied to the switch, the first beams are vibrated and the electrode layers contact the steps, which closes the switch.