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:
Nov. 08, 2011
Filed:
Jan. 16, 2004
Toshinori Takatsuka, Fuji, JP;
Toshinori Takatsuka, Fuji, JP;
Asahi Kasei EMD Corporation, Tokyo, JP;
Abstract
A pointing device is provided which can reduce its size and height, reduce leakage magnetic flux density to the outside. Magnetic sensors are disposed symmetrically two by two on X and Y axes on a printed circuit board. A silicone resin is placed on the printed circuit board, and an internally and externally unipolarly magnetized ring-like magnet is placed near the center of the magnetic sensors. The printed circuit board and silicone resin are not bonded. The silicone resin is easily deformed by applying external force, and returns to its initial state without the external force as soon as the external force is removed. The ring-like magnet is configured to move approximately in parallel to the surface of the printed circuit board. The variations in the ambient magnetic flux density produced by the movement of the ring-like magnet are detected by the magnetic sensors.