Rotary compressor

Pumps – Condition responsive control of drive transmission or pump... – Adjustable cam or linkage

Reexamination Certificate

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Details

C417S223000, C417S326000, C418S029000

Reexamination Certificate

active

06860724

ABSTRACT:
A rotary compressor having a plurality of compression chambers and adapted to vary a compression capacity according to a direction of rotation of roller pistons within the compression chambers. A rotating shaft provided with a plurality of eccentric parts drives the roller pistons to compress refrigerant in the compression chambers by eccentric rotations of the eccentric parts. A reversible motor selectively rotates the rotating shaft in opposite directions, and a clutch engages the roller pistons such that the roller pistons perform a compressing action or an idle action according to a rotating direction of the rotating shaft, thus varying the compression capacity of the compressor according to a rotating direction of the rotating shaft. Thus, the compression capacity may be varied without using an inverter circuit.

REFERENCES:
patent: 4236874 (1980-12-01), Sisk
patent: 5522235 (1996-06-01), Matsuoka et al.
patent: 5951261 (1999-09-01), Paczuski
patent: 6092993 (2000-07-01), Young et al.
patent: 6132177 (2000-10-01), Loprete et al.
patent: 6190137 (2001-02-01), Robbins et al.
patent: 6796773 (2004-09-01), Choi et al.

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