Endless belt power transmission systems or components – Pulley with belt-receiving groove formed by drive faces on...
Patent
1992-10-21
1994-07-12
Watts, Douglas D.
Endless belt power transmission systems or components
Pulley with belt-receiving groove formed by drive faces on...
474242, 474245, F16H 5556
Patent
active
053284127
ABSTRACT:
An apparatus and a method for generating same provides a pulley sheave inner face profile for a variable pulley of a continuously variable transmission allowing the crowned face chain-belt centerline to remain in a plane substantially perpendicular to the axis of the pulleys at all times and at all drive ratios. Given a primary pulley sheave inner face profile, a corresponding secondary pulley sheave inner face profile can be developed to achieve substantially perfect belt alignment. The pulley sheave inner face profiles may be designed to be identical or congruent. Congruent pulley sheave inner face profiles can be developed according to an algebraic solution allowing numerically controlled design and manufacturing techniques in the fabrication of the sheave inner faces.
REFERENCES:
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patent: 3016755 (1962-01-01), Dittrich
patent: 3640145 (1972-02-01), Kraus
patent: 4504248 (1985-03-01), Hollinger
patent: 4589859 (1986-05-01), Kanesaka
patent: 4631042 (1986-12-01), Rattunde
patent: 4795406 (1989-01-01), Dittrich et al.
Borg-Warner Automotive Inc.
Watts Douglas D.
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