Device for minimizing flutter of a filler piece in an internal g

Details Device for minimizing flutter of a filler piece in an internal g Device for minimizing flutter of a filler piece in an internal g

1990-05-10

1991-09-03

Smith, Leonard E.

Rotary expansible chamber devices

With mechanical sealing

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

418169, 418170, F04C 210

Patent

active

050449052

ABSTRACT:
A gear pump which includes a housing having an internally toothed gear and a pinion meshing with the internally toothed gear disposed therein. The housing has a sickle-shaped space between the two gears and has therein a filler piece. In order to avoid a fluttering of the filler piece and the noises connected therewith, structure is provided for urging the filler piece, due to pressurized oil being guided from the pressure chamber and one side of the filler piece into a bore extending through the filler piece to the opposite side of the filler piece, against the pump housing. The filler piece can also be locked in the direction of rotation by a pressure piece also loaded by the pressurized oil.

REFERENCES:
patent: 3486459 (1969-12-01), Eltze
patent: 3890066 (1975-06-01), Eckerle

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