Endless belt power transmission systems or components – Control for variable input to output speed-ratio
Patent
1992-01-27
1993-03-16
Bui, Thuy M.
Endless belt power transmission systems or components
Control for variable input to output speed-ratio
474 18, F16H 700
Patent
active
051940493
ABSTRACT:
The present invention relates to a combined directional and infinitely variable speed transmission which, through a single continuous V-belt pulley drive mechanism, is capable of infinitely variable changing speeds and direction with a single control. It employs an axially adjustable non-rotatable drive inducing input pulley whose effective operaing diameter can be adjusted to vary its dimentional ratio with a rotatable, fixed diameter orbiting output pulley rotatable driven on its own axis by a walking motion of the connecting V-belt about the non-rotatable input pulley. Prior art transmission all require some type of forward-reverse directional change mechanism completely separate and apart from the speed section of the transmission. The present invention eliminates such separate directional devices by being able to manipulate the ratio between the effective operating diameters of the pulleys to change direction at the same time that such ratio is determining the output speed of the transmission. This is due to the fact that the walking movement (emphasis added) of the belt around the stationary input pulley will rotate the output pulley in either direction depending on the effective relative operating diameters of the pulleys. Where their diameters are equal, no drive is transmtted. However, on either side of this "neutral" position, one pulley's effective operating diameter is different from the other, causing speed as well as directional changes from the drive train, even though the belt is always walking around the "drive inducing" input pulley in the same direction.
REFERENCES:
patent: 4740191 (1988-04-01), Takano et al.
patent: 4913686 (1990-04-01), Hattori
patent: 5031481 (1991-07-01), Algrain et al.
LandOfFree
Combined directional and infinitely variable-speed transmission does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Combined directional and infinitely variable-speed transmission, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Combined directional and infinitely variable-speed transmission will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-349095