Power transmission device for vehicle
US11859703B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Sep 23, 2021 |
| Grant date | Jan 2, 2024 |
| Priority date | — |
| Expiry date | Sep 23, 2041 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H2061/0488
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A transmission (21) as a power transmission device for a vehicle comprises an input shaft (22), an output shaft (23), and a planetary continuously variable transmission mechanism (31). The planetary continuously variable transmission mechanism (31) comprises a planetary gear mechanism (32), a pump side clutch (33), a hydraulic pump (36), a hydraulic motor (38), and a motor side clutch (40). The hydraulic pump (36) and the hydraulic motor (38) are connected via a pair of main lines (37A, 37B). When the transmission (21) is switched from a traveling state to a neutral state, at least one clutch (33, 40) of the pump side clutch (33) and the motor side clutch (40) is released.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.