US PATENT SUBCLASS 200 / 511
.~ Compressible elastomer


Current as of: June, 1999
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200 /   HD   ELECTRICITY: CIRCUIT MAKERS AND BREAKERS

502  DF  SOLID CONTACT {15}
511.~ Compressible elastomer


DEFINITION

Classification: 200/511

Compressible elastomer:

(under subclass 502) Subject matter wherein a circuit is completed by an elastomeric material containing discrete particles of electrically conductive materials embedded therein and wherein, in the compressed state, the particles come into contact with each other to complete the circuit, and as the compression is released, the particles again separate to open the circuit.

SEE OR SEARCH CLASS

338, Electrical Resistors,

114, for variable resistors using elastomeric conductors. These switches differ from the resistors in the amount of change of resistance with pressure. The switch normally changes from open or infinite resistance to closed or low resistance with only a small change in pressure. The resistor has a gradual change in resistance such that intermediate resistance can be obtained.