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. 10, 2000
Filed:
Dec. 18, 1998
George Qin Jiang, Kokomo, IN (US);
Delco Electronics Corporation, Kokomo, IN (US);
Abstract
A motion sensor having a sensing ring and electrodes formed on or in a surface region of a substrate, such as a silicon chip. The sensing ring is supported above the substrate by a number of spring members extending radially from a hub, so that the ring has an axis of rotation through the hub. The electrodes are formed to closely surround the ring, with some of the electrodes being adapted to induce vibration in the ring, while others detect angular and radial deflections of the ring. Finally, the spring members are substantially S-shaped with substantially C-shaped first and second portions having different radii of curvature. Configuring the spring members to have two portions of different radii of curvature substantially produces in the sensing ring the elliptical vibration mode shape of an ideal ring.