Endless belt power transmission systems or components – System including spaced pulleys interconnected by a belt
Patent
1999-05-20
2000-10-24
Bucci, David A.
Endless belt power transmission systems or components
System including spaced pulleys interconnected by a belt
474205, F16H 700, F16H 128
Patent
active
061359076
ABSTRACT:
The invention is an apparatus and method for providing an automatic speed change transmission for transmitting power from a drive wheel to a driven wheel by way of an elastic drive belt. The driven wheel may be made to turn at a desired different speed from the drive wheel supplying the driving power by proper selection of the respective radii of the wheels and of the elastic drive belt. When a load or tension is applied to a portion of the drive belt by the drive wheel, the tensioned portion of the drive belt--which is selected to be capable of maximal elongation under tension ranging from ten percent (10%) to nineteen-hundred percent (1900%) beyond its untensioned length--stretches to a substantial extent, thus causing the driven wheel to turn faster to accommodate the elongated belt portion. The untensioned belt portion remains unstretched. Thus, the speed of the respective wheels may be stepped up or stepped down to a desired ratio by appropriate selection of belt elasticity and applied load. The invention provides a simple automatic power transmission system and method for use in vehicles and other applications as an alternative to complicated and inefficient multi-component manual, automatic, and variable transmissions that use gears, clutches, etc.
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Bucci David A.
Kaness Matthew A.
The Trustees of Columbia University in the City of New York
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