Rotary expansible chamber devices – With mechanical sealing – Seal element between working member and vane
Patent
1975-07-18
1976-11-02
Husar, C. J.
Rotary expansible chamber devices
With mechanical sealing
Seal element between working member and vane
F04C 2910
Patent
active
039894266
ABSTRACT:
A vane pump comprising a cylindrical pump chamber, vanes adapted to rotate within the pump chamber, and a drive rotor arranged eccentrically with respect to the center of rotation of the vanes, such vane pump being formed with through holes in portions of opposite end walls of the drive rotor which are in spaced juxtaposed relationship with side end faces of each vane, such through holes being connected to a line for supplying therethrough a portion of the fluid discharged by the vane pump. During operation of the vane pump, the portion of the fluid discharged by the pump and supplied through the line is ejected through the through openings against the side end faces of the vanes so as to avoid collision between the end walls of the drive rotor and the side end faces of the vanes whereby the service life of the vane pump can be increased.
REFERENCES:
patent: 2070138 (1937-02-01), Martin
patent: 2536851 (1951-01-01), Latham
patent: 3072068 (1963-01-01), Weiss
patent: 3187678 (1965-06-01), Pettibone
patent: 3373929 (1968-03-01), Partain
Fujisawa Fumio
Kawashima Ken'ichi
Sato Masayuki
Hitachi , Ltd.
Husar C. J.
Smith Leonard E.
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