Piston position sensing device

Details Piston position sensing device Piston position sensing device

1975-02-27

1976-07-20

Myracle, Jerry W.

Signals and indicators

Bells

Gong type

137555, G01D 542, G09F 900

Patent

active

039700348

ABSTRACT:
A sensing device for sensing the position of a movable element in a fluid-operable actuator including a relatively movable piston and cylinder. The sensing device includes a pair of co-operating pressure tappings in the cylinder wall, a pair of peripheral and axially spaced seals on the piston for sealing between the piston and the cylinder wall and a detector responsive to the pressure at the pressure tappings by producing an output indicating piston position. The spacing of the pressure tappings is greater than the axial width of each of the seals and less than the axial distance between the seals.

REFERENCES:
patent: 2371893 (1945-03-01), Hyland
patent: 2746418 (1956-05-01), Loss
patent: 2891573 (1959-06-01), Dobleske

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