초록 ▼

Use is made of thermoplastic materials in layered configurations as a thermally stable, rigid but not brittle strip of lengths of six inches to ten feet or more. The layered strip contains layers of conductive fibers in a resin matrix, which, through use of appropriate contact mechanisms and wiring,

Use is made of thermoplastic materials in layered configurations as a thermally stable, rigid but not brittle strip of lengths of six inches to ten feet or more. The layered strip contains layers of conductive fibers in a resin matrix, which, through use of appropriate contact mechanisms and wiring, provide an assembly with an infinite potentiometer scale. The strips are especially useful in linear positioning indicators such as pneumatic and hydraulic cylinder and liquid level gauges.

대표청구항 ▼

[ What we claim is:] [1.] A multi-segment potentiometer board, comprising a top layer of conductive polymeric resin, a bottom layer of conductive polymeric resin and a center layer of non-conductive polymeric resin, and sliding contacts, the board being formed into potentiometer segments defined by

[ What we claim is:] [1.] A multi-segment potentiometer board, comprising a top layer of conductive polymeric resin, a bottom layer of conductive polymeric resin and a center layer of non-conductive polymeric resin, and sliding contacts, the board being formed into potentiometer segments defined by notches separating the conductive layers and slots passing through said top, center, and bottom layers, said slots receiving said sliding contacts for the top and bottom conductive resin layers.