Inductively coupled position detection system
Patent 4646087 Issued on February 24, 1987. Estimated Expiration Date: 
February 24, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
February 24, 2004. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3918021 Control lever switch Finger control joystick utilizing Hall effect Contactless switch and joystick controller using Hall elements Joystick with single-leaf spring switch Joystick controller using magnetosensitive elements with bias magnets Digital joystick controller Gear selector unit for a transmission Patent #: 4519266 InventorApplicationNo. 06/548410 filed on 11/03/1983US Classes:340/870.31, Inductive transmitter341/5, For X or Y coordinate determination (e.g., stylus-pad)74/471XYControl moves in two planesExaminersPrimary: Caldwell, Sr., John W.Assistant: Heim, Michael F. International ClassesG01D 5/12 (20060101)G01D 5/20 (20060101) AbstractAn inductively coupled position sensing system wherein voltages induced in plural stationary sensor coils are combined and synchronously detected. Variation in the induced voltages results from movement of a drive coil mechanically coupled to a member the position or orientation of which is of interest. | |
