Roller vane pump with angular ranges of approximate concentric c

Details Roller vane pump with angular ranges of approximate concentric c Roller vane pump with angular ranges of approximate concentric c

1985-01-14

1985-09-03

Vrablik, John J.

Rotary expansible chamber devices

Working chamber surface expressed mathematically

418225, F04C 200

Patent

active

045389772

ABSTRACT:
A fluid supply pump such as a roller cell pump which includes a multiplicity of individual pumping bodies or rollers held in the grooves of a driven rotor in contact with an eccentrically disposed roller path which, in a certain angular range around the narrowest and widest gap, it is, at each location, virtually identical with a concentric circular path which is drawn around the rotor center point, the path preferably formed by two ellipse halves, for the elliptic shape can be virtually exactly approximated around the apex points of the ellipse by means of its primary circles of curvature to thereby improve the dynamic sequence of operations, for example to increase the sealing effect of the radial gap and to adapt the expansion and compression phases to the opening and closing conditions of the intake and pressure grooves.

REFERENCES:
patent: Re27241 (1971-12-01), Pace, Jr. et al.
patent: 1271585 (1918-07-01), Klise
patent: 2359903 (1944-10-01), Fanning
patent: 3247803 (1966-04-01), Halsey

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