Rotary expansible chamber devices – With mechanical sealing – Seal on cylinder engaging rotary member separates inlet and...
Patent
1986-12-17
1988-10-18
Vrablik, John J.
Rotary expansible chamber devices
With mechanical sealing
Seal on cylinder engaging rotary member separates inlet and...
418170, F03C 208, F04C 210, F04C 1500
Patent
active
047783630
ABSTRACT:
An internal-gear machine such as 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), Jones
patent: 4132514 (1979-01-01), Eckerle
patent: 4472123 (1984-09-01), Eckerle et al.
Otto Eckerle GmbH & Co. KG
Vrablik John J.
Walnoha Leonard P.
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