×

Three-axis force measurement stylus

  • US 4,896,543 A
  • Filed: 11/15/1988
  • Issued: 01/30/1990
  • Est. Priority Date: 11/15/1988
  • Status: Expired
First Claim
Patent Images

1. An apparatus for generating signals representing direction and magnitude of force on a shaft in a stylus comprising:

  • a housing, wherein said housing comprises a funnel portion;

    a pickup, wherein said pickup comprises a cone portion; and

    means disposed between said housing and said pickup and abutting said housing and said pickup at an interface skewed from said shaft for sensing pressure between said housing and said pickup in a plurality of directions wherein said sensing means further comprises a first pad, a second pad and a third pad constructed on a common elastomeric backing material, each said pad including at least a pair of conductive traces having a surface exposed for electrical connection thereto and a coating of conductive material over said traces, said conductive material being in contact with said traces varying conductivity between said traces in proportion to pressure between said coating and said traces.

View all claims
  • 1 Assignment
Timeline View
Assignment View
    ×
    ×