V-belt continuously variable transmission

Details V-belt continuously variable transmission V-belt continuously variable transmission

2006-10-10

2006-10-10

Charles, Marcus (Department: 3682)

Endless belt power transmission systems or components

Pulley with belt-receiving groove formed by drive faces on...

Load responsive

C474S028000

Reexamination Certificate

active

07118501

ABSTRACT:
A V-belt continuously variable transmission includes a primary pulley and a secondary pulley. The primary pulley is connected to an input shaft and the secondary pulley is connected to an output shaft. A V-belt is wrapped around the primary and secondary pulleys. When a speed ratio is to be increased: (a) the oil pressure supplied to the primary pulley is set to an oil pressure necessary for ensuring a torque capacity of the V-belt and for maintaining the speed ratio; and (b) the oil pressure supplied to the secondary pulley is set to an oil pressure that is higher than the oil pressure necessary for ensuring the torque capacity of the V-belt and for maintaining the speed ratio, thereby attaining a target speed change speed.

REFERENCES:
patent: 5168778 (1992-12-01), Todd et al.
patent: 5269726 (1993-12-01), Swanson et al.
patent: 6007452 (1999-12-01), Sawada et al.
patent: 6110062 (2000-08-01), Fujikawa
patent: 6454675 (2002-09-01), Asayama et al.
patent: 6464603 (2002-10-01), Reuschel et al.
patent: 3-181659 (1991-08-01), None
patent: 2001-21016 (2001-01-01), None

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