Continuous pumping system

Details Continuous pumping system Continuous pumping system

1978-12-29

1980-09-30

Spar, Robert J.

Dispensing

With filter

Associated with vent passage

222340, 222380, B05B 1100

Patent

active

042250609

ABSTRACT:
A pumping system is disclosed in which a storage compartment formed by a spring loaded piston and cylinder assembly is provided with a spring which stays at a relatively constant length when pumping product to keep a relatively constant pressure on the product to maintain a steady stream or spray of product emerging from the pumping system. A vent structure is provided by a double seal arrangement which allows the mounting ring and a main cylinder of the pumping system to be made in one piece.

REFERENCES:
patent: 3061202 (1962-10-01), Tyler
patent: 3379381 (1968-04-01), Decaux
patent: 3923250 (1975-12-01), Boris
patent: 4035303 (1977-07-01), Ufferfilge
patent: 4109832 (1978-08-01), Kutik et al.

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