Convertible pump system

Details Convertible pump system Convertible pump system

1988-04-01

1989-06-13

Neils, Paul F.

Pumps

With condition responsive pumped fluid control

Pressure responsive relief or bypass valve

417314, 417428, 417440, 417442, 134167C, 15104061, F04B 4900, F04B 1900, B08B 300

Patent

active

048387681

ABSTRACT:
A fluid pump system whose output can be varied by converting it from maximum output to a lesser output and in between by dumping or varying one of its pumping elements or pistons to the inlet side of the pump. More specifically, a pump is provided with two opposed pistons, both of which are connected to inlet and outlet for maximum capacity. The piston chamber of one piston is equipped with a converter line for leading that chamber back to the inlet, whereby only the remaining piston furnishes the pump discharge. Variations in the adjustable mode of the valve is reflected in the action of the pump relief valve to cause increased effectiveness of a jetter line supplied by the pump output.

REFERENCES:
patent: 71287 (1867-11-01), Dennison et al.
patent: 313879 (1885-03-01), Nagle
patent: 867932 (1907-10-01), Weeks
patent: 1061511 (1913-05-01), Webb
patent: 1176518 (1916-03-01), Burns
patent: 1481358 (1924-01-01), Dwyer
patent: 1566620 (1925-12-01), Scoville, Jr.
patent: 2566702 (1951-09-01), Harrigan
patent: 3463397 (1969-08-01), Mecklin et al.
patent: 3601452 (1971-08-01), Brunner
patent: 3653783 (1972-04-01), Sauder
patent: 4161956 (1979-07-01), Hadgkiss

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