Continuously variable transmission with wedge actuation mechanism
US10267391B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 16, 2016 |
| Grant date | Apr 23, 2019 |
| Priority date | — |
| Expiry date | Jan 29, 2037 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/662
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A continuously variable transmission (CVT comprises a shaft rotatable about an axis, and variator assembly, and an actuator mechanism. The variator assembly includes a pulley supported on the shaft and having a ramp surface, and an endless rotatable device frictionally engaged with the pulley. The ramp surface inclines in an axial direction along the axis toward the endless rotatable device. The CVT further comprises an actuator mechanism that includes a wedge component that has a wedge surface interfacing with the ramp surface, and a rotary piston operatively connected to the wedge component. The rotary piston defines a first fluid chamber pressurizable to apply a rotational force that provides relative motion between the ramp surface and the wedge surface resulting in a wedge force on the ramp surface and a clamping force of the endless rotatable device on the pulley.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.