Continuously variable transmission with control arrangement and method for reducing impact of shock load
US6290620A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 25, 1999 |
| Grant date | Sep 18, 2001 |
| Priority date | — |
| Expiry date | Jun 25, 2019 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H61/66272
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A continuously variable transmission and method for preventing transmission belt slippage in the case of a sudden change in load torque on the transmission involve one or both of inserting a lag in the transmission with a torsional spring damper or elastomer damper device between the device to be driven and an output shaft of the secondary pulley of the transmission, and inserting a lag in a hydraulic pressure control loop of the transmission compensating for a difference between the rate of torque transmission between the device to be driven and the transmission, and a response rate of the hydraulic pressure control loop to a sudden change in load torque. The transmission is used to drive an aircraft electrical generator at a constant speed in the disclosed embodiment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.