US 12,486,885 B2
Toothed CVT for which teeth re-engagement is improved
Armin Sebastian Tay, Rowland Heights, CA (US)
Appl. No. 17/440,717
Filed by Armin Sebastian Tay, Rowland Heights, CA (US)
PCT Filed Mar. 20, 2020, PCT No. PCT/US2020/023854
§ 371(c)(1), (2) Date Sep. 17, 2021,
PCT Pub. No. WO2020/198007, PCT Pub. Date Oct. 1, 2020.
Prior Publication US 2022/0170535 A1, Jun. 2, 2022
Int. Cl. F16H 9/08 (2006.01); F16H 7/08 (2006.01); F16H 7/12 (2006.01); F16H 9/24 (2006.01)
CPC F16H 9/08 (2013.01) [F16H 7/12 (2013.01); F16H 7/1254 (2013.01); F16H 7/1263 (2013.01); F16H 9/24 (2013.01); F16H 2007/0806 (2013.01); F16H 2007/0865 (2013.01); F16H 2007/0874 (2013.01); F16H 2007/0891 (2013.01)] 1 Claim
OG exemplary drawing
 
1. A continuously variable transmission comprising:
a) a driving cone, which is a cone with a single torque transmitting member having teeth; and
b) a driven cone, which is a cone with a single torque transmitting member having teeth; and
c) a transmission belt having teeth, said transmission belt operationally couples said driving cone and said driven cone by having said teeth of said transmission belt engaging the respective said teeth of said torque transmitting members of said driving cone and said driven cone;
and an exit point is defined at a point where engagement between said teeth of said torque transmitting member of said driving cone and said teeth of said transmission belt ends; and
d) a constrainer including first and second constrainer wheels, said first constrainer wheel is configured to push said transmission belt against said driving cone, and said second constrainer wheel is configured to push said transmission belt against said driven cone; and
said constrainer further includes a tensioning pulley positioned on a slack side of said transmission belt and mounted on said constrainer, said tensioning pulley being configured to be able to slide axially towards and away from said transmission belt in order to selectively provide or remove slack to said transmission belt so as to maintain a substantially constant tension in said transmission belt;
wherein said first and second constrainer wheels are configured to maintain a substantially constant angle of engagement and disengagement between said transmission belt and said tensioning pulley; and wherein said first constrainer wheel is configured to prevent teeth ratcheting at said exit point.