Internal gear machine having segmented, pivotal filler members

Details Internal gear machine having segmented, pivotal filler members Internal gear machine having segmented, pivotal filler members

1988-03-22

1988-10-25

Vrablik, John J.

Rotary expansible chamber devices

With mechanical sealing

Seal on cylinder engaging rotary member separates inlet and...

418169, F04C 210, F04C 1500

Patent

active

047800712

ABSTRACT:
An internal-gear machine such as a pump comprises a casing with an internally toothed annular gear rotatably mounted therein. An externally toothed pinion meshes with the internal teeth of the annular gear, and a generally sickle-shaped filling member which is split approximately in a circumferential direction is disposed in the clearance between the pinion and the annular gear. The end faces of the filling member portions which are towards the intake side of the machine may be of a convexly curved configuration and bear against a support element fixedly connected only to one wall of the casing so as to be radially slidable thereagainst and also pivotable about a pivot axis parallel to the axis of the pinion. Alternatively the end faces of the filling member portions may be flat and bear radially slidably against an intermediate element pivotally supported on an at least part-cylindrical peg fixed to only one wall of the casing.

REFERENCES:
patent: 2482713 (1949-09-01), Eckerle
patent: 4472123 (1984-09-01), Eckerle et al.

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