US 9,534,673 B2Granted

Continuously variable transmission device

AssigneeInawa

InventorsPierre Chevalier, Adrien Panzuti

Life of this patent

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Abstract

A continuously variable transmission device including a guiding cover rotating about a first axis, a guided cover rotating about a second axis, a planet gear including a first belt in contact with an inner surface of the guiding cover and a second belt in contact with an inner surface of the guided cover, contact areas between the belts and the inner surfaces of the covers being defined in a single first radial plane relative to the first axis, wherein the planet gear rotates about a third axis contained in the first radial plane, the angular orientation relative to the first axis defining the transmission ratio of the device, and wherein the planet gear pivots about a fourth axis perpendicular to the first radial plane and nonintersecting with the first axis, and pivots about a fifth axis parallel to the first radial plane and perpendicular to the third axis.

Claims11

Dependent claims

A continuously variable transmission device for transmitting a rotational movement, comprising:

a driving bell rotating around a first axis;
a driven bell rotating around a second axis aligned with the first axis;
a planet gear provided with a first belt in contact with an inner surface of the driving bell and a second belt in contact with an inner surface of the driven bell, contact zones between said belts and the inner surfaces of the bells being defined in a same first radial plane relative to the first axis, while the planet gear rotates around a third axis included in the first radial plane and an angular orientation of which relative to the first axis defines the transmission ratio of the device and while the planet gear pivots around a fourth axis perpendicular to the first radial plane and not intersecting the first axis;
wherein the planet gear pivots around a fifth axis parallel to the first radial plane and perpendicular to the third axis.

1 more element

Dependencies are inferred from the claim text.

Facts

Application: 14/408,412Filed 20 Jun 2013
Priority: FR 12 5586721 Jun 2012
Published: US 2015/0240921 A127 Aug 2015
Granted: 3 Jan 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification8 codes

F16H 15/50
With members having orbital motion: gearings providing a continuous range of gear ratios
B62M 9/06
Of changeable ratio: using a single chain, belt, or the like
F16H 15/30
In which the member B has a spherical friction surface centered on its axis of revolution: with internal friction surface
F16H 15/38
With concave friction surface, e.g. a hollow toroid surface: with two members B having hollow toroid surfaces opposite to each other, the member…