Force sensing means and method of producing such sensing means
First Claim
1. A force sensing means comprising a capacitor arrangement of at least two capacitor plates and one compressible dielectric between at least two of said capacitor plates, the improvement wherein the capacitor plates are a metallic cloth, the warp threads and the weft threads of which define an angle which yields to the influence of external forces, and the dielectric is a macroscopically homogeneous, foamed, elastomeric material.
1 Assignment
0 Petitions
Accused Products
Abstract
A force sensing means comprising capacitor plates in the form of metallic cloth bonded to a compressible dielectric made from a foamed elastomeric material. An incompressible layer of insulating material may be formed over one or both of the capacitor plates and additional capacitor plate or plates may be provided bonded to the insulating layer to shield the capacitor plates bonded to the compressible dielectric. The metallic cloth strips forming the capacitor plates may be formed in the form of strips running crosswise on opposite sides of the dielectric to provide a matrix of force sensing means. The warp and weft threads of the metallic cloth are arranged so that neither is perpendicular or parallel to the longitudinal direction of the strip.
67 Citations
24 Claims
- 1. A force sensing means comprising a capacitor arrangement of at least two capacitor plates and one compressible dielectric between at least two of said capacitor plates, the improvement wherein the capacitor plates are a metallic cloth, the warp threads and the weft threads of which define an angle which yields to the influence of external forces, and the dielectric is a macroscopically homogeneous, foamed, elastomeric material.
-
24. A force sensing means comprising a capacitor arrangement of at least two capacitor plates and one compressible dielectric between at least two of said capacitor plates, the improvement wherein the capacitor plates are a metallic cloth and the dielectric is selected from the group consisting of macroscopically homogeneous, foamed, elastomeric polyurethane and a foamed mixture of natural rubber and polystyrene-butadiene rubber.
Specification