Pulley With Belt-receiving Groove Formed By Drive Faces On Relatively Axially Movable Coaxial Confronting Members (e.g., Expansible Cone Pulley, Etc.) Patents (Class 474/8)
Members are gripping jaws actuated during each rotation of pulley (Class 474/9)
Speed responsive (Class 474/11)
Load responsive (Class 474/17)
Temperature responsive (Class 474/22)
Adjusted by power from pulley drive train (Class 474/23)
And member has plural, relatively axially movable drive faces (Class 474/24)
And pulley shiftable laterally of its axis of rotation (Class 474/25)
Fluid pressure actuator for adjustment of member (Class 474/28)
Including actuator interconnecting plural pulleys on spaced shafts for simultaneous adjustment (Class 474/29)
Plural members forming plural belt-receiving grooves on common axis (Class 474/32)
By manual actuator for one or both confronting members (Class 474/37)
Including lubrication or particular guide or bearing for movable member (Class 474/43)
With spring device (Class 474/46)
  • Transmission mechanism having a variable transmission ratio
    Patent number: 4259874
    Abstract: The mechanism comprises at least one driving shaft and at least one driven shaft. A first pulley is keyed to rotate with the driving shaft and has a cheek which is fixed in translation and a cheek which is movable in translation relative to the first cheek. A second pulley is keyed to rotate with the driven shaft and has a cheek which is fixed in translation and a cheek which is movable in translation relative to the fixed cheek. A device is provided for controlling the displacement of the movable cheek of the first pulley. A transmission device extends around the first pulley and the second pulley. Radial elements adapted to be engaged in corresponding recesses in the transmission device are keyed to rotate with the driving shaft and the driven shaft between the cheeks of the first pulley and second pulley.
    Type: Grant
    Filed: January 12, 1979
    Date of Patent: April 7, 1981
    Assignee: Fonderie de L'Yonne
    Inventor: Louis Guirriec