Electromagnetic pointing device using varying overlap of coils and conductive elements
US6248018A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Sep 15, 1998 |
| Grant date | Jun 19, 2001 |
| Priority date | — |
| Expiry date | Sep 15, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG05G2009/04755
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A micro-stick in which the movement of the micro-stick is detected inductively. The micro-stick is connected to an actuator element which varies interaction between an electromagnetic element and a number of conductive coils. In one embodiment, the coils are mounted on a printed circuit board mounted beneath the micro-stick. The micro-stick is mounted on a plate having a number of pins extending through the circuit board. On the other side of the circuit board is a flexible metal sheet which is contacted by the pins, and moved away from the coils in a direction in which the micro-stick is tilted. This increased separation of the metal sheet from the coils can then be detected.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.