Back pressure regulator and valve system

Details Back pressure regulator and valve system Back pressure regulator and valve system

1987-09-28

1988-10-25

Cohan, Alan

Fluid handling

Line condition change responsive valves

Pilot or servo controlled

13762413, 251122, G05D 1600

Patent

active

047796421

ABSTRACT:
A back pressure regulator system is set forth. In the preferred embodiment, a pressure to be regulated is input to a pressure transducer. The transducer forms a signal indicative of pressure applied through a regulator system which forms an output driving differential signal suitable for a motor. An electric motor is driven thereby and operates a gear box which in turn connects through a slip clutch and a linear motion clutch to advance or retract a needle valve stem. The stem is threadedly engaged with the body. It rotates to advance or retract a needle valve in a valve seat, and a connection is made from the pressure to be regulated through the needle valve to thereby control back presssure on the system.

REFERENCES:
patent: 2917271 (1959-12-01), Banks
patent: 3077552 (1963-02-01), Koppel
patent: 3464438 (1969-09-01), Maurer
patent: 3586027 (1971-06-01), Fitzgerald
patent: 4476893 (1984-10-01), Schwelm
patent: 4679591 (1987-07-01), Mane
patent: 4705067 (1987-11-01), Coffee

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