Patent ID: 7614611

Claim:
A sheave system comprising: a first grooved sheave, with an outer diameter of a first value; a first groove size, and a sheave body inner diameter of a first value; a second grooved sheave, with an outer diameter of a second value; a second groove size, and a sheave body inner diameter of a first value; a third grooved sheave, with an outer diameter of a third value; a third groove size, and a sheave body inner diameter of a first value; a first sheave sleeve configured to be fixedly attached to any of the first through third grooved sheaves, the first sheave sleeve comprising: a first sleeve bore, with a first sleeve inner diameter of a first value; a first sleeve outer diameter that is about the same as the sheave body inner diameter as to allow a fixed attachment between the sleeve and any of the first through third grooved sheaves; a second sheave sleeve configured to be fixedly attached to any of the first through third grooved sheaves, the second sheave sleeve comprising: a second sleeve bore, with a second sleeve inner diameter of a second value; a second outer diameter that is about the same as the sheave body inner diameter as to allow a fixed attachment between the second sheave sleeve and any of the first through third grooved sheaves; a third sheave sleeve configured to be fixedly attached to any of the first through third grooved sheaves, the third sheave sleeve comprising: a third sleeve bore, with a third sleeve inner diameter of a third value; and a third sleeve outer diameter that is about the same as the sheave body inner diameter as to allow a fixed attachment between the sleeve and any of the first through third grooved sheaves.