Expansible pulley with torque and centrifugal response

Details Expansible pulley with torque and centrifugal response Expansible pulley with torque and centrifugal response

1976-07-19

1978-06-20

Scott, Samuel

Machine element or mechanism

Gearing

Toothed gear and recirculated unconnected elements

7423017M, 7423017A, F16H 5552, F16H 5556

Patent

active

040954790

ABSTRACT:
A V belt pulley clutch assembly for a variable speed transmission which may be either the driving or the driven pulley, and which has one movable sheave which is both speed and torque responsive, and wherein the torque responsive portions comprise raised spiral ramps on the hub of the movable portion of the V belt pulley driven through saddle type members riding on the spiral ribs. The ribs are spiraled axially along the hub of the movable portion of the V belt pulley in a direction so that when the driven member is subjected to more load the unit tends to shift into a lower drive ratio. That is when the drive clutch assembly is powered from a drive shaft, the spirals are arranged so that the pulley halves tend to separate under increasing load on the belt. The ribs are on the external surface of a hub and can be die cast draft free for permitting driving and sliding between two relatively movable pulley halves.

REFERENCES:
patent: 2711103 (1955-06-01), Miner
patent: 3269202 (1966-08-01), Getz et al.
patent: 3395587 (1968-08-01), Casini
patent: 3599504 (1971-08-01), Taylor
patent: 3868862 (1975-03-01), Bessette
patent: 3908475 (1975-09-01), Takagi et al.
patent: 3968702 (1976-07-01), Beaudoin et al.
patent: 3996811 (1976-12-01), Reese

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