Controlled inlet valves for metering pumps

Details Controlled inlet valves for metering pumps Controlled inlet valves for metering pumps

1976-03-01

1977-11-29

Croyle, Carlton R.

Pumps

Expansible chamber type

Mechanically actuated distributor

251332, F04B 700

Patent

active

040603512

ABSTRACT:
This invention relates to controlled inlet valves for metering pumps. The metering pumps for which the valve of the invention is applicable are of the kind comprising a cylinder in which moves a piston to which a reciprocating movement is imparted. In the valve of the invention a member is mounted to slide in the pump cylinder and one of the ends of this member has an obturator which co-operates with a sealing gland arranged at the inlet opening to the cylinder. The sliding member is selectively coupled at its other end to the piston and is subject to the urging of an elastic member which is capable of thrusting the obturator back to the closed position.

REFERENCES:
patent: 27128 (1860-02-01), Holly
patent: 2083584 (1937-06-01), Wineman
patent: 2254084 (1941-08-01), Nilson
patent: 3023710 (1962-03-01), Tyree
patent: 3233863 (1966-02-01), Bowen et al.
patent: 3272218 (1966-09-01), Johnson
patent: 3888552 (1975-06-01), Fontaine

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