Hydraulic screw machine

Details Hydraulic screw machine Hydraulic screw machine

1985-06-14

1987-01-20

Croyle, Carlton R.

Rotary expansible chamber devices

Interengaging rotating members

Helical or herringbone

F04C 1824

Patent

active

046377875

ABSTRACT:
A hydraulic screw machine including a drive screw and at least one running screw co-operating therewith are arranged inside a housing, the drive screw being united with a shaft extending out through the housing at the high pressure side of the machine and being provided with a balancing piston for balancing a part of the axial force acting on the drive screw and also with a collar which together with a wall portion of the housing forms a hydrostatic axial bearing for taking up the remaining axial force acting on the drive screw. The bearing surfaces of the axial bearing are kept separated by a spring means during starting and similar operating conditions. An axially limitedly movable rolling bearing is mounted in association with the hydrostatic axial bearing and takes up axial forces on the drive screw occurring in certain operating conditions.

REFERENCES:
patent: 3642331 (1972-02-01), Silver
patent: 3932073 (1976-01-01), Schibbye
patent: 4000559 (1977-01-01), Korrenn
patent: 4028025 (1977-06-01), Lonnebring
patent: 4131400 (1978-12-01), Segerstrom
patent: 4394091 (1983-07-01), Klomp

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