Patent ID: 7828516

Claim:
A device for supporting a rotatably adjustable ring coaxial with a circular blade carrier about a center axis of the blade carrier of a compressor, comprising: a plurality of levers arranged between the blade carrier and the adjusting ring, the levers being distributed over the circumference of the adjustable ring and extending tangentially from the blade carrier to the adjustable ring, wherein the levers are fixed at one end to the blade carrier and have a free end opposite the fixed end that is arranged toward the adjustable ring; and a plurality of rotatable rollers each arranged at the free end of the plurality of levers where each roller is rollable in a circumferential direction on the adjusting ring or on the blade carrier, wherein each lever is adjustably fixed to the blade carrier by a screw, and wherein each lever has an elongated hole extending in the tangential direction that accommodates the screw.