Hydrostatic continuously variable transmission
US7222485B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 15, 2006 |
| Grant date | May 29, 2007 |
| Priority date | — |
| Expiry date | Mar 15, 2026 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16H57/033
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A hydrostatic continuously variable transmission comprises: a hydraulic pump; a power input shaft engaged with the hydraulic pump to transmit power from a power source to the hydraulic pump; a hydraulic motor in hydraulic communication with the hydraulic pump; a casing that houses the hydraulic pump and the hydraulic motor; a port block mounted to the casing, the port block having a block main body and a cover member connected to a power input side of the block main body, said cover member having an outer surface; a cooling hydraulic path provided in the port block in a region where the block main body and the cover member meet, the cooling hydraulic path being connected to a first hydraulic path in the port block, the cooling hydraulic path having a plurality of bends; a cooling fan provided on the power input shaft to provide air flow directly to the outer surface of the cover member.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.