Freewheel devices

Details Freewheel devices Freewheel devices

1980-07-01

1984-04-10

Braun, Leslie A.

Machine element or mechanism

Gearing

Plural power paths to and/or from gearing

74665GC, 192 96, F16H 3706

Patent

active

044413840

ABSTRACT:
A freewheel device for connecting a power input to a selected one of a plurality of outputs so as to transmit rotary motion in one direction of rotation and to over-run when the speed of the selected one of the outputs exceeds that of the input, includes a neutral condition in which the input is rotationally disengaged from any of the outputs. In a described embodiment, the freewheel device comprises a plurality of rollers retained circumferentially adjacent one end of an axially movable shaft in operative association with a plurality of wedge-shaped portions formed on the shaft, axial movement of the shaft serving to engage the rollers between the wedge-shaped portions and, selectively axially spaced-apart internal, cylindrical surfaces formed on each of the outputs and on a rotatable support.
The freewheel device finds particular application in the transmission system of multi-engined helicopters.

REFERENCES:
patent: 1647932 (1927-11-01), Pozder
patent: 1943057 (1934-01-01), Bush
patent: 1947033 (1934-02-01), Bush
patent: 2861461 (1958-11-01), Kreidler
patent: 3380564 (1968-04-01), Beurer
patent: 3554338 (1971-01-01), Kennedy, Jr.
patent: 4284183 (1981-08-01), Brisabois et al.

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