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. The strips are conductively connected by cutting a bias surface relative to said strips and placing resin thereon.

대표청구항 ▼

[ What we claim is:] [1.] A potentiometer assembly for determining linear position comprising:an elongate strip comprised of first, second and third conductive layers of conductive polymeric material, each separated by a layer of nonconductive polymeric material;a head assembly attached to one end o

[ What we claim is:] [1.] A potentiometer assembly for determining linear position comprising:an elongate strip comprised of first, second and third conductive layers of conductive polymeric material, each separated by a layer of nonconductive polymeric material;a head assembly attached to one end of the elongate strip comprising wiring connecting the conductive layers; anda slide contact assembly slidable along the outer surfaces of said first and third conductive layers of the elongate strip, andone end of the elongate strip having a bias surface relative to and from the first conductive layer through the second conductive layer, and having a conductive resin placed on the bias surface connecting the first and second conductive layers.