초록 ▼

A continuously variable diameter pulley includes a cylindrical hub mounted on a drive shaft for rotation therewith. A plurality of vanes have stem portions slidably journaled through radial apertures in the hub for slidable movement radially inwardly and outwardly in the hub. The vanes include head

A continuously variable diameter pulley includes a cylindrical hub mounted on a drive shaft for rotation therewith. A plurality of vanes have stem portions slidably journaled through radial apertures in the hub for slidable movement radially inwardly and outwardly in the hub. The vanes include head portions which form an outer circumferential drive surface around the hub. A first apparatus for sliding the vanes radially outwardly includes a cone slidably mounted on the drive shaft for rotation therewith and for slidable movement longitudinally along the drive shaft. The cone is slidable into a central cavity formed in the hub, with the conic surface of the cone contacting beveled inward ends of the vanes, to force the vanes outwardly as the cone is pushed into the hub cavity. A second apparatus for extending the vanes radially outwardly from the hub includes a disk-shaped plate with a plurality of radially extending apertures and a plurality of hydraulic fluid wells. The inward ends of the vane stems slide radially inwardly into the plate apertures, and a bearing plate with a plurality of pistons is operable to force the piston into the wells and thereby force the hydraulic fluid to push the vanes radially outwardly.

대표청구항 ▼

A continuously variable diameter pulley, comprising: a generally cylindrical hub having a forward face, a rearward face, a circumferential surface and a longitudinal axis extending from the rearward to the forward face; said hub coaxially mounted on a drive shaft for rotation therewith; a plurality

A continuously variable diameter pulley, comprising: a generally cylindrical hub having a forward face, a rearward face, a circumferential surface and a longitudinal axis extending from the rearward to the forward face; said hub coaxially mounted on a drive shaft for rotation therewith; a plurality of vanes, each vane having a head portion mounted on a stem portion, with said stems slidably journaled through apertures extending radially inwardly into said hub circumferential surface, for slidable movement radially inwardly and outwardly in said apertures and rotational movement with said hub; said vane head portions forming an outer circumferential drive surface around said hub; and means for simultaneously sliding all of said vanes inwardly and outwardly in said apertures, to selectively vary the overall diameter of the circumferential drive surface of the pulley.