Fluid compressor with bearing means disposed inside a rotary rod

Details Fluid compressor with bearing means disposed inside a rotary rod Fluid compressor with bearing means disposed inside a rotary rod

1993-03-25

1994-11-29

Beatsch, Richard A.

Rotary expansible chamber devices

Helical working member

418164, 418188, 417356, F04C 200

Patent

active

053684567

ABSTRACT:
A fluid compressor with bearing means disposed inside a rotary member includes a cylinder having an inner circumferential surface therein; supporting means for rotatably supporting both ends of the cylinder; a rotary member arranged in the cylinder so as to extend in the axial direction of the cylinder and be eccentric thereto, the rotary member having a spiral groove formed on an outer circumferential surface thereof, the spiral groove having pitches gradually narrowing with a distance from a suction-side end to a discharge-side end of the cylinder; a spiral blade fitted in the spiral groove so as to be slidable in the radial direction of the rotary member; and drive unit for rotating the cylinder and the rotary member, wherein the supporting member is characterized in that the supporting member is extended inwardly the rotary member from a base portion fixed to the case.

REFERENCES:
patent: 2401189 (1946-05-01), Quiroz
patent: 4871304 (1989-10-01), Iida et al.
patent: 5062778 (1991-11-01), Hattori et al.
patent: 5174737 (1992-12-01), Sakata et al.

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