Vane pump with integrated shaft, rotor and disc

Details Vane pump with integrated shaft, rotor and disc Vane pump with integrated shaft, rotor and disc

2008-01-08

2008-01-08

Trieu, Theresa (Department: 3748)

Rotary expansible chamber devices

Positively actuated vane

C418S133000, C418S268000

Reexamination Certificate

active

07316551

ABSTRACT:
A rotary vane suction pump that includes a housing that defines a pump chamber. A shaft is rotatably mounted to the housing. A rotor is fixed to the front end of the shaft to rotate in unison with the vanes. The vanes that form the fluid cavities, into which the fluid is drawn into and discharged from, are seated in radially directed slots that extend longitudinally, end-to-end along the length of the rotor. Discs located at the opposed inboard and outboard ends of the rotor are mounted to the shaft and rotor to turn in unison with the rotor. The discs have diameters greater than that of the rotor and the pump chamber. The discs thus close the ends of the pump chamber and the ends of the slots in which the vanes are seated.

REFERENCES:
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Redjacket website page dated Sep. 8, 2004 entitledRed Jacket-Pump and Monitoring Technology Delivering Today's Vital Resources Worldwide(English language) showing in central cross-section a multistage centrifugal pump and Redjacket® brochure page entitledServico Como Nunca Antes Para Más Clientes De LPG.(Spanish language) cited merely for the enlarged view of the same pump (2 sheets).
Case 20A PCT Written Opinion (PCT/ISA/237—6 sheets) mailed Oct. 18, 2004.
Case 20A PCT International Search Report (PCT/ISA/210—5 sheets) mailed Oct. 18, 2004 (copy filed in USPTO with Nov. 18, 2004 IDS).

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