Cylindrical pump device having a flexible blade member

Details Cylindrical pump device having a flexible blade member Cylindrical pump device having a flexible blade member

1997-06-20

1999-10-05

Freay, Charles G.

Rotary expansible chamber devices

Non-metallic working member, cylinder or partition

Resilient

418161, F01C 500

Patent

active

059613084

ABSTRACT:
A cylindrical pump device comprises a cylindrical housing and a cylindrical rotational member disposed in the cylindrical housing for rotation around the axis of the cylindrical housing. The cylindrical rotational member has a solid cylindrical wall, a central hub and a plurality of flexible blades extending between the central hub and the solid cylindrical wall for defining a plurality of liquid chambers therebetween. The cylindrical housing supports a shaft apart from the central axis of the cylindrical housing. During rotation of he rotational member, the chambers far from the central axis first increases its volume to introduce liquid ink therein and then decreases its volume to discharge the liquid ink from the chamber. Inlet valve or outlet valve for the pump are not necessary to reduce the parts and fabrication cost of a pump system.

REFERENCES:
patent: 3410219 (1968-11-01), Shope
patent: 4004865 (1977-01-01), Ikeda et al.
patent: 4334842 (1982-06-01), Ikeda et al.

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