Sliding piston pump, especially for vapourizers

Details Sliding piston pump, especially for vapourizers Sliding piston pump, especially for vapourizers

1974-03-18

1976-05-04

Croyle, Carlton R.

Pumps

Expansible chamber type

Distributor formed from integral portion of flexible wall...

417550, F04B 4300, F04B 2104, F04B 3910

Patent

active

039543544

ABSTRACT:
A pump primarily intended for incorporation in a dip-tube sprayer includes a hollow piston slidable in a cylinder which communicates with an outlet tube. The piston defines a seat for a valve which in the inoperative condition prevents communication between the cylinder and the outlet or delivery tube. The piston has the form of a shallow cup and is not totally covered by the valve when seated. One or more bleeds are provided in the part of the piston covered by the valve.

REFERENCES:
patent: 378848 (1888-02-01), Normand
patent: 3749291 (1973-07-01), Prussia et al.

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