Endless belt power transmission systems or components – Friction drive pulley or guide roll – Pulley or guide roll having plural – discrete belt-engaging...
Patent
1992-07-24
1993-09-14
Bui, Thuy M.
Endless belt power transmission systems or components
Friction drive pulley or guide roll
Pulley or guide roll having plural, discrete belt-engaging...
F16H 700
Patent
active
052444350
ABSTRACT:
A cylindrical pulley over which a belt or web is looped is composed of a series of flat, annular discs, each of which rotates about its own individual axis, all discs closely adjacent to its neighbors so that the aggregate of discs forms the cylindrical pulley. All rotating disc axes are parallel and all are inclined at a chosen angle to the aggregate pulley axis creating a belt contact surface that moves laterally as well as peripherally. All discs revolve about bearing carriers that are rotated together in outboard bearings to change the orientation of the angled discs with respect to the traveling belt. Thus a belt wrapped about the pulley can be made to move in a direction perpendicular to its travel direction at a rate defined by the degree to which the individual discs deviate from the aggregate pulley axis. More importantly the belt can be made to reverse its direction of lateral travel by opposite positioning of the disc carrier group for which purpose several operating means are shown.
REFERENCES:
patent: 1540588 (1925-06-01), Alexander
patent: 1738700 (1929-12-01), Hadwin
patent: 3392431 (1968-07-01), Bisang
patent: 4592463 (1986-06-01), Puskar
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