Cartridge vane pump with dual side fluid feed and single side in

Details Cartridge vane pump with dual side fluid feed and single side in Cartridge vane pump with dual side fluid feed and single side in

1999-08-02

2000-11-21

Denion, Thomas

Rotary expansible chamber devices

With plural working fluid inlet or outlet passages

418259, 418133, F03C 200

Patent

active

061494097

ABSTRACT:
A hydraulic vane pump (10), including a top section (12), a middle section (14), a vane rotor assembly (16) and a bottom section (18) secured together to form a single assembly. The vane pump (10) has a fluid feed chamber (20) to supply fluid directly to the top of a bore (32) formed in the middle section (14). Fluid from the feed chamber (20) also passes through a bypass chamber (28) into a fluid pocket (24) in the bottom section (18) and into the bottom of the bore (32). A vane rotor assembly (16) is used to force fluid from the bore (32) out the outlet chamber (26). By supplying fluid to both the top and bottom of the bore (32) cavitation is reduced. By feeding fluid from a single side of the hydraulic vane pump (10), packaging requirements are minimized.

REFERENCES:
patent: 2228933 (1941-10-01), Thomson
patent: 2232983 (1941-02-01), Wahlmark
patent: 2291346 (1942-07-01), Robinson
patent: 3870910 (1975-03-01), Fussner
patent: 3877845 (1975-04-01), Green
patent: 4002029 (1977-01-01), Jones
patent: 4500270 (1985-02-01), Tuckey
patent: 4502854 (1985-03-01), Shibuya et al.
patent: 4596519 (1986-06-01), Tuckey
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patent: 4986739 (1991-01-01), Child
patent: 5064362 (1991-11-01), Hansen
patent: 5112085 (1992-05-01), Busch
patent: 5593287 (1997-01-01), Sadakata
patent: 6030191 (2000-02-01), Wood et al.

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