Abstract Friction-type variable-speed transmission mechanism comprising internally tangent disk and rings, and more particularly at least one disk rigid with the input shaft and interposed between two friction rings rotatably solid with a driven drum, one of said rings being adapted to be moved in its axial direction under the control of a thrust device carrying reaction members distributed around a circumference external to the contact area between said disks and rings, characterized in that said thrust device comprises a plate carrying at least one shaft on which radially spaced rotary rollers are disposed and adapted rotatably to engage cam faces positioned on said movable ring and in said rotary drum, respectively, said plate being positioned angularly under the combined action of two antagonistic forces.
Friction-type variable-speed transmission mechanism comprising a driving shaft having at least a first disk means thereon, a driven member including a drum having a second disk means fixed thereto, third disk means splined to the drum for axial movement relative to the second disk means, a ring carried by the drum, a plurality of radially extending pins carried on the ring and extending radially outwardly therefrom, at least two radially spaced rollers journalled on each pin with said rollers located radially outward of said second and third disk means, cam means carried adjacent the rollers on at least one of said second disk means and said drum, and actuator means connected between the drum and the ring for selectively moving the ring and rollers circumferentially relative to the drum and cams whereby all said disks are frictionally engaged to drive the driven drum.
Claim 2
Dependent Claim
143 words
Friction-type variable-speed transmission mechanism comprising a driving shaft having at least a first disk means thereon, a driven member including a drum having a second disk means fixed thereto, third disk means splined to the drum for axial movement relative to the second disk means, a ring carried by the drum, a plurality of radially extending pins carried on the ring and extending radially outwardly therefrom, at least two radially spaced rollers journalled on each pin with said rollers located radially outward of said second and third disk means, cam means carried adjacent the rollers on at least one of said second disk means and said drum, and actuator means connected between the drum and the ring for selectively moving the ring and rollers circumferentially relative to the drum and cams whereby all said disks are frictionally engaged to drive the driven drum.