Valve/piston cartridge and rotor bearing pre-load for a radial p

Details Valve/piston cartridge and rotor bearing pre-load for a radial p Valve/piston cartridge and rotor bearing pre-load for a radial p

1988-06-15

1990-04-10

Freeh, William L.

Pumps

Three or more cylinders arranged in parallel, radial, or...

Radial cylinders

417559, 417564, F04B 104

Patent

active

049155954

ABSTRACT:
A radial piston pump is provided with a plurality of valve/piston cartridges. Each cartridge includes the piston and at least one of the valves connecting the piston to the inlet and outlet passages of the pump. The bearings for the main rotor are pre-loaded using a threadedly adjustable end quill. Once adjusted, the end guill is held in location by a pin or the like. The rotor itself is provided with counterweights to balance the eccentric cam surface. These features allow construction of a pump housing which is substantially a single unit, rather than two pump halves. A significant reduction in the number of machined bores also is obtained.

REFERENCES:
patent: 1634579 (1927-07-01), Hutton
patent: 2442631 (1948-01-01), Winkler
patent: 2450248 (1948-09-01), Morgan
patent: 4363607 (1982-12-01), Eichele

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