Fluid control valves

Details Fluid control valves Fluid control valves

1977-08-17

1980-01-15

Weakley, Harold W.

Fluid sprinkling, spraying, and diffusing

With signals, indicators, recorders, meters or changeable...

Position or extent of motion indicator

137509, 137554, 2395333, 123 32H, B05B 1200

Patent

active

041834674

ABSTRACT:
A fluid control valve, principally for controlling the flow of fuel to a compression ignition engine, comprises a valve body and a valve member slidable within the body, the valve member co-operating with a seating on the valve body to control the flow of fluid through the valve. A spring urges the valve member into engagement with the seating and in use, the pressure of the fluid entering the valve is arranged to act on the valve member in opposition to the spring so as to lift the valve member off the seating. The valve member and the seating are formed from electrically conductive material and are electrically insulated from each other except when the valve member is engaged with the seating. An electrical terminal extends to the exterior of the valve body and enables the electrical resistance between the valve member and the seating to be measured. The measured electrical resistance provides an indication of movement of the valve member towards and away from the seating.

REFERENCES:
patent: 2434151 (1948-01-01), Fisk
patent: 2960973 (1960-11-01), Davis
patent: 3124305 (1964-03-01), Evans
patent: 3890995 (1975-06-01), Miller
patent: 3993247 (1976-11-01), Tyler
patent: 4066059 (1978-01-01), Mayer

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