Hydraulic rotary screw machine with axial balancing piston

Details Hydraulic rotary screw machine with axial balancing piston Hydraulic rotary screw machine with axial balancing piston

1977-04-19

1978-12-26

Croyle, Carlton R.

Rotary expansible chamber devices

Interengaging rotating members

Helical or herringbone

F04C 1712, F04C 2900

Patent

active

041314000

ABSTRACT:
A hydraulic screw machine having a housing employing a screw assembly with a drive screw and cooperating idler screws. The drive screw is sealably connected to a shaft extending beyond the housing on the high pressure side and has associated therewith a balance piston for acting on the screw drive. The drive screw is journalled to the shaft via bearings in the form of a self-adjusting plate surrounding the shaft. The plate is disposed between abutment surfaces connected to the housing for limiting its axial movement. A leakage channel between the piston and the housing is connected to the high pressure side of the machine and is determined by the balance piston.

REFERENCES:
patent: 2590561 (1952-03-01), Montelius
patent: 2924181 (1960-02-01), Sennet
patent: 4028025 (1977-06-01), Lonnebring

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