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US 2015/0084934 A1Published application
Electromagnetic and capacitive pointer
AssigneeWaltop International Corporation
InventorYU CHIEHMR HO
Life of this patent
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Abstract
An electromagnetic and capacitive pointer is disclosed. The electromagnetic and capacitive pointer comprises a tube assembly and a conductive tube assembly, a ferrite core, an non-magnetic and conductive pin, a control circuit board, a conductive pin holder, a conductive elastomer, a holder and a power source. The non-magnetic and conductive pin, the conductive pin holder, the conductive elastomer, the control circuit board and the conductive tube assembly constitute a conductive path.
Claims10
An electromagnetic and capacitive pointer, comprising:
- a tube assembly and a conductive tube assembly;
- a ferrite core;
- an non-magnetic and conductive pin penetrating trough the ferrite core and being moveable through the ferrite core;
- a control circuit board;
- a conductive pin holder, one end of the non-magnetic and conductive pin being sheathed in the conductive pin holder;
- a conductive elastomer located between the conductive pin holder and the control circuit board;
- a holder with a winding coil electrically connecting to the control circuit board to constitute a resonance circuit with the ferrite core, the ferrite core, the conductive pin holder and the conductive elastomer being sheathed in the holder;
- and
- a power source providing the control circuit board with electrical power;
- wherein the non-magnetic and conductive pin, the conductive pin holder, the conductive elastomer, the control circuit board and the conductive tube assembly constitute a conductive path.
7 more elements
Dependencies are inferred from the claim text.