Torsion disc for use in a continuously variable transmission

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United States of America Patent

PATENT NO 7785228
SERIAL NO

11842118

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Importance

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Abstract

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A continuously variable transmission (CVT) having a torsion disc for a CVT. The torsion disc includes a splined bore about its central axis, an annular recess formed in the disc for receiving the race of a bearing, and a raised surface for supporting a torsion spring. In one embodiment, the torsion disc includes a number of holes for receiving dowels that support a torsion spring. Load cam discs, a torsion disc, rolling elements, and a hub cap shell are configured to generate axial force, transmit torque, and manage reaction forces. In one embodiment, a splined input shaft and a torsion disc having a splined bore cooperate to input torque into the variator of the CVT. Among other things, various ball axles, axle-ball combinations, and reaction force grounding configurations are disclosed. In one embodiment, a CVT having axial force generation means at both the input and output elements is disclosed.

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Patent Owner(s)

Patent OwnerAddress
ENVIOLO INC1501 LEANDER DRIVE BUILDING C SUITE 2 LEANDER TX 78641

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Armstrong, Oronde J Austin, US 30 3752
Dawe, Daniel J Austin, US 52 5085
Lohr, Charles B Austin, US 97 9172
Miller, Donald C Fallbrook, US 160 21835
Nichols, Jon M Georgetown, US 55 5823
Pohl, Brad P Leander, US 80 8040
Poth, Wesley R Leander, US 20 2730
Simister, Matthew P Austin, US 31 3498
Smithson, Robert A Cedar Park, US 82 11568
Thomassy, Fernand A Liberty Hill, US 52 5668

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