Machine element or mechanism – Mechanical movements – Grip units and features
Patent
1976-11-03
1978-09-12
Scott, Samuel
Machine element or mechanism
Mechanical movements
Grip units and features
F16H 1516
Patent
active
041127790
ABSTRACT:
A variable speed transmission device of the type in which a first rotatable element is in rolling friction engagement with a second nutatable element having an axis movable in a biconical path about the axis of the first elements. The first element supports a pair of axially movable cone-like members fixed for rotation with the first element and each having exterior surfaces of revolution defined by a curved generatrix to be convex in axial section and converging away from the point of first and second element axes intersection. The rolling friction surfaces of the second element are defined by an interior cylindrical surfaces and means are provided for adjusting the angle of the second element axis with respect to the first to vary the radii at the point of frictional contact on the cone-like members. Angular adjustment of the second element axis with respect to the axis of the first element is effected by an eccentric sleeve-like member carrying the second element in a support member rotatable about the axis of the first element. Input torque is preferably provided by a clutch to the support member whereas the variable speed output is desirably transmitted through a multi-speed gear transmission.
REFERENCES:
patent: RE29328 (1977-08-01), Kemper
patent: 2721483 (1955-10-01), Hacker
patent: 2850911 (1958-09-01), Kraus
patent: 3837233 (1974-09-01), French
patent: 3910137 (1975-10-01), Nedeljkovitch
Bigot Lucien
Kemper Yves Jean
Chandler Lance W.
Scott Samuel
Vadetec Corporation
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