Gear machine for use as a pump or motor

Details Gear machine for use as a pump or motor Gear machine for use as a pump or motor

1989-10-05

1991-04-02

Smith, Leonard E.

Rotary expansible chamber devices

With mechanical sealing

Axially movable end wall or end wall portion

F04C 1500

Patent

active

050044125

ABSTRACT:
A gear machine includes a machine casing closed by two covers and within which two gear wheels provided on respective shafts supported by bushes are in mutual engagement. A compensation area for the axial thrusts to which a bush is subjected is defined between an elastic diaphragm installed between the bush and a cover, so that because of the clearance between the gear wheels and bushes rapid starting is possible even under load, whereas as pressure increases a corresponding flexure of the diaphragm towards the bushes occurs, so as to gradually narrow clearance while at the same time partially balancing the axial thrusts.

REFERENCES:
patent: 2842066 (1958-07-01), Hilton
patent: 3578887 (1971-05-01), Turolla
patent: 3748063 (1973-07-01), Putnam
patent: 3895890 (1975-07-01), Laumont
patent: 3975124 (1976-08-01), Dworak et al.
patent: 4108582 (1978-08-01), Bitton
patent: 4281974 (1981-08-01), Teruyama
patent: 4392798 (1983-07-01), Bowden
patent: 4465444 (1984-08-01), Dworak et al.
patent: 4527966 (1985-07-01), Laumont

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