Extended life infinitely variable traction roller transmission w

Details Extended life infinitely variable traction roller transmission w Extended life infinitely variable traction roller transmission w

1996-03-04

1997-12-16

Marmor, Charles A.

Friction gear transmission systems or components

Fluid control

Of toroidal transmission

476 40, 476 42, F16H 6130

Patent

active

056978634

ABSTRACT:
In an infinitely variable traction roller transmission, wherein two toric traction disks are rotatably supported opposite one another and define a toric cavity in which at least two motion transmitting traction rollers are disposed in engagement with the two toric disks and supported by trunnions, the trunnions being pivotally supported to permit changing the ratio of motion transmission between the toric disks, the toric disks each have a different cavity radius, thus causing the circles of contact of the traction rollers with the toric disk to change as the trunnions pivot to various transmission ratio positions, thereby distributing the loads on the traction rollers over a relatively large surface area thus extending the fatigue life of the traction rollers, and consequently, of the transmission.

REFERENCES:
patent: 2856784 (1958-10-01), Weisel
patent: 4159653 (1979-07-01), Koivunen
patent: 4576055 (1986-03-01), Kraus
patent: 5299987 (1994-04-01), Dawe

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