Internal-gear machine

Details Internal-gear machine Internal-gear machine

1988-07-01

1990-01-16

Koczo, Michael

Rotary expansible chamber devices

With mechanical sealing

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

418170, F04C 106, F04C 1500

Patent

active

048939978

ABSTRACT:
An internal-gear machine such as a pump comprises a casing with an internally toothed annular gear mounted therein. An externally toothed pinion meshes with the internal teeth of the annular gear over a portion thereof, and an arcuate filling member is disposed between the annular gear and the pinion. The filling member has a first end of substantial thickness in the radial direction of the assembly and tapers almost to a point at the second end, and is mounted in the casing by means of at least one mounting pin. The pin is arranged at a spacing from the first end of the filling member, which is towards the intake chamber defined between the annular gear and the pinion, and the pin has a mounting portion engaging into a groove in a side surface of the filling member. The filling member is thus rotatable about the axis of the pin and displaceable by virtue of displacement of the mounting portion in the groove in the filling member.

REFERENCES:
patent: 3289599 (1966-12-01), Eckerle et al.
patent: 3890066 (1975-06-01), Eckerle
patent: 4132514 (1979-01-01), Eckerle
patent: 4132515 (1979-01-01), Kruger
patent: 4392799 (1983-07-01), Shikano et al.
patent: 4472123 (1984-09-01), Eckerle et al.
patent: 4778363 (1988-10-01), Buchmuller
patent: 4780071 (1988-10-01), Buchmuller

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