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:
Sep. 29, 1998
Filed:
Feb. 06, 1997
Jerry Schell, Chanute, KS (US);
Schell Electronics, Inc., Chanute, KS (US);
Abstract
A motion detector includes a plurality of electrically conductive spheres contained within a chamber having a height slightly greater than the sphere diameter. In a first embodiment, a top wall of the chamber consists of a circuit board having a pattern of conductive metal installed thereon including one pattern for one conductor and another pattern for another conductor with the two patterns being interrelated so that spheres rolling within the chamber can make and break electrical circuits. In a second embodiment, both the top and bottom walls of the chamber consist of circuit boards having patterns of conductive metal thereon. In either embodiment, the pattern of conductive metal may be spiral-shaped, either circular or elliptical, concentric circles or concentric ellipses, an array of dots or an array of rectangles.