Hitch assembly for a work machine
US6089328A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 28, 1998 |
| Grant date | Jul 18, 2000 |
| Priority date | — |
| Expiry date | Aug 28, 2018 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01B59/068
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A hitch for a work machine such as an agricultural tractor permits controlled towing of an implement behind the work machine. The hitch is attached to the machine frame. The hitch includes first and second draft arms that are pivotally connected with and spaced apart on the frame by intermediate links. The intermediate links provide pivotal movement of the draft arms constrained about a first horizontal axis. The intermediate links also provide pivotal movement of the first draft arm constrained about a second axis, and of the second draft arm constrained about a third axis. At least one draft cylinder is connected to one of the intermediate links and to a respective draft arm. The hitch incorporates multiple degrees of movement in a compact package and is useful as a steerable component of the machine to provide positive steering force.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.