Hitch adapter
US4195704A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Jun 12, 1978 |
| Grant date | Apr 1, 1980 |
| Priority date | — |
| Expiry date | Jun 12, 1998 |
Classification
- Technology area (CPC A)Human Necessities
- CPC primaryA01D67/005
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
An agricultural tractor includes a rearwardly extending drawbar connected to a hitch member on the tongue of a trailing implement through a hitch adapter that includes a housing mounted on the rearward end of the drawbar and connected thereto by a vertical pin extending through a vertical bore in the housing and the drawbar, the rearward end of the adapter being pivotally connected to the implement tongue by a vertical pin, the axis of which is equidistant from the front and rear universal joints of a PTO hook-up assembly that connects the tractor power take-off to the implement driveshaft. The housing has a cavity with a larger cross section than the cross section of the drawbar and a plate-like clamping element is mounted in the housing cavity and includes upwardly and outwardly diverging inclined surfaces that are engageable with the lower lateral corner edges of the drawbar, the clamp member being vertically adjustable so that when the inclined surfaces engage the edges of the drawbar they clamp the drawbar against the top of the housing while resisting lateral shifting of the drawbar in the cavity, thereby providing a simple adjustment to accommodate the hitch adapter to vario…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.