Pumping unit

Details Pumping unit Pumping unit

1991-07-17

1993-09-14

Bertsch, Richard A.

Pumps

Expansible chamber type

Plural pumping chambers

417540, F04B 2102

Patent

active

052443647

ABSTRACT:
A pumping unit, particularly for waterblasters and similar equipments, comprising the pump, the control unit, and the pressure damping device to form a single body, although they can be separated from each other. The pump has one double-acting plunger.

REFERENCES:
patent: 1240712 (1917-09-01), Hamilton
patent: 4512188 (1985-04-01), Erickson
patent: 4594059 (1986-06-01), Becker
patent: 4734011 (1988-03-01), Hall
patent: 4842492 (1989-06-01), Gannaway
patent: 4867653 (1989-09-01), Mills et al.
patent: 5036662 (1991-08-01), Knowlton
patent: 5051074 (1991-09-01), Cowan
patent: 5074767 (1991-12-01), Gerlach et al.
patent: 5076769 (1991-12-01), Shao
patent: 5129427 (1992-07-01), White et al.

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