Tongue for connecting a draft implement to a towing vehicle
US4220350A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 8, 1979 |
| Grant date | Sep 2, 1980 |
| Priority date | — |
| Expiry date | Jan 8, 1999 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB62D49/065
- WIPO fieldTransport
- WIPO sectorMechanical engineering
Abstract
A tongue for connecting a pull type implement to a towing vehicle is provided with a front end portion adapted to be detachably connected to the rear portion of a towing vehicle and a rear portion adapted to be pivotally connected to a lower front portion of the implement for movement about a substantially horizontal lateral axis, with an abutment fixedly supported by the frame and being positioned above the rear end portion of the frame, the abutment being adapted to abuttingly engage a corresponding upper front portion of the implement for limiting pivotal upward movement of the tongue relative to the implement and for permitting the abutment to swing forwardly away from the upper front portion of the implement to accommodate pivotal movement of the tongue relative to the implement incidental to downward movement of the towing vehicle relative to the implement and to unhitching of the implement.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.