Shinpo Kogyo Kabushiki Kaisha

Shimpo Kogyo Kabushiki Kaisha

Tadashi Kashihara

Kikuo Okamura

Yasushi Kitazaki

A stepless speed change traction gear includes a plurality of conical rollers, each having a conical surface frictionally engaging with an internal surface of a speed changing ring, a flat surface perpendicular to the axis of the conical surface frictionally engaging a non-rotating track ring, and an annular concave surface coaxial with the conical surface and frictionally engaging a bearing ring. The speed changing ring is longitudinally adjustable between limits so that a speed ratio range from 0 to nearly 1.0 is developed. This traction gear is not provided any additional gearing or speed increasing device to widen the speed range. A clutch, brake, and operator can permit a direct drive condition between the input and output shafts.

Stepless speed change traction gear

Disclosed is a stepless speed change gear including a plurality of conical rollers each of which is provided with a conical surface frictionally engaging with a ring-member moved by a speed changing assembly. A surface of concave cross-section frictionally engages with a sun-member on an input shaft, and a flat surface frictionally engages with a non-rotatable disc member. A gear train is provided to extend the speed range to include a speed ratio of 1:1. A release mechanism is provided for the non-rotatable disc member, and a clutch mechanism is provided for direct coupling of the input and the output shaft. Power is transmitted by direct coupling of the input and the output shaft.

Growing community of inventors

Kyoto, Japan

Tadashi Kashihara