Machine transmission with clutch element hydraulic control
US10801612B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 26, 2019 |
| Grant date | Oct 13, 2020 |
| Priority date | — |
| Expiry date | Apr 26, 2039 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/1264
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A transmission for a machine is disclosed. The transmission may comprise a torque path providing a path for transmission of torque from an input shaft to an output shaft, and a single clutch element along the torque path. The transmission may further comprise a clutch actuator configured to actuate engagement of the clutch element, and a clutch pressure control (CPC) valve configured to permit a flow of hydraulic fluid to the clutch actuator through a control pressure line when in an open position to cause the clutch actuator to actuate engagement of the clutch element. The transmission may further comprise a failure mode response (FMR) valve in the control pressure line between the CPC valve and the clutch actuator. The FMR valve may have a failure position obstructing flow of the hydraulic fluid from the CPC valve to the clutch actuator when the CPC valve is in the open position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.