Rotary pump and cam ring therefor

Details Rotary pump and cam ring therefor Rotary pump and cam ring therefor

1997-06-02

1999-09-14

Ryznic, John E.

Expansible chamber devices

Relatively movable working members

Interconnected with common rotatable shaft

91491, F01B 106

Patent

active

059505222

ABSTRACT:
A rotary pump such as a rotary fuel injection pump comprises a pump body; a rotor rotatably supported by the pump body and responsive to mechanical pulses to pump a fluid; and a stator ring (208) supported by the pump body and having a ring of projections (209) arranged to deliver mechanical pulses to the rotor when the rotor rotates relative to the stator ring. The stator ring (208) has a vibrational mode which is induced by delivering the mechanical pulses to the rotor. The pump body supports the stator ring across an interface which is a complete annulus or a partial annulus. In order to reduce the transmission of vibration from the stator ring to the pump body, the interface and/or stator ring incorporate cavities at the antinodes of the vibrational mode of the stator ring.

REFERENCES:
patent: 3949647 (1976-04-01), Martin
patent: 4132154 (1979-01-01), Nishiba
patent: 4157056 (1979-06-01), Allart et al.
patent: 4256018 (1981-03-01), Badoureaux et al.

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