Continuously variable transmission pulley
AssigneeManville Corporation
InventorThomas H. Sadler
Life of this patent
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Abstract
A pulley construction for use in a continuously variable power transmission arrangement. The conical working surfaces of the drive pulleys and the driven pulleys are comprised of removable segments formed of material which is relatively erodable so that the conical pulley surfaces will wear away before the drive belt. The segments are to be replaced when their surfaces have been eroded too much. The replacement of the pulley face segments is simpler and less expensive than replacing the belt, and the use of a relatively erodable pulley face prolongs the life of the belt.
Claims9
In a power transmission arrangment having a drive shaft, a pulley mounted on the drive shaft, a driven shaft, a pulley mounted on the driven shaft, and a drive belt trained over and operatively connecting the pulleys, the improvement comprising:
- each pulley having a base portion and a belt engaging face portion;
- each belt engaging face portion comprising a plurality of connecting segments, having wear surfaces which together are forming a conical surface,
- the wear surfaces of said segments being comprised of a composition including friction modifying material which will erode to a greater extent than the belt as a result of its operative contact with the belt;
- and
- means for removable attaching the face portions of the puleys to the base portions thereof.
In a continuously variable power transmission arrangment having a drive shaft, a pulley on the drive shaft including two pulley halves mounted for relative axial movement toward and away from each other, a driven shaft, a pulley on the driven shaft including two pulley halves mounted for relative axial movement toward and away from each other, and a drive belt trained over and operatively connecting the pulleys, the improvement comprising:
- each pulley half having a base portion and a belt engaging face portion, each face portion comprising a conical surface;
- the face portions of the pulley halves being comprised of a material which as a result of its operative contact with the belt will erode to a greater extent than will the belt;
- and
- means for removably attaching the face portions of the pulley halves to the base portions thereof.
Dependencies are inferred from the claim text.