Patent ID: 7134845

Claim:
A variable capacity rotary compressor, comprising: a housing to define therein a the first compression chamber having a first capacity, and a second compression chamber having a second capacity; a rotating shaft to transmit a rotating force to the first and second compression chambers; first and second eccentric parts, provided on an outer surface of the rotating shaft in the first and second compression chambers, respectively; an eccentric unit, including first and second eccentric bushes having different weights, the first and second eccentric bushes fitted over the first and second eccentric parts, respectively, to rotate relative to the rotating shaft within predetermined angles; and a pair of force transmission parts provided on opposite sides of the eccentric unit to receive the rotating force of the rotating shaft so that one of the first and second eccentric bushes rotates the rotating shaft and a remaining one of the first and second eccentric bushes rotates while being released from eccentricity from the rotating shaft, according to a rotating direction of the rotating shaft, the pair of force transmission parts being provided to be closer to a center of gravity of the first or second eccentric bush which is heavier, than to a center of gravity of the first or second eccentric bush which is lighter.