Radial vane pump having variable displacement

Details Radial vane pump having variable displacement Radial vane pump having variable displacement

1982-08-17

1984-05-01

Vrablik, John J.

Rotary expansible chamber devices

With changeable working chamber magnitude

Axially or radially spaced working chambers

418210, F04C 200, F04C 1504

Patent

active

044458304

ABSTRACT:
A variable displacement vane pump includes a rotor (10) rotatably mounted in a casing (32). The casing (32) has a pair of relatively rotatable complementary cams (18,20). Each cam (18,20) has a surface shaped to provide an annular curvilinear track. The pump also has a first (14) and second (16) plurality of vanes slidably mounted upon the rotor (10). Each of the vanes (14,16) is sized and positioned to engage a corresponding cam (18,20). These vanes (14,16) are constrained in a radial direction by the cams (18,20) as the rotor (10) rotates. The vanes of the first (14) plurality engage one (18) of the cams, the other one (20) of the cams being engaged by the vanes of the second plurality (16).

REFERENCES:
patent: 2570411 (1951-10-01), Vickers

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