Hitch
US4688819A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Aug 1, 1986 |
| Grant date | Aug 25, 1987 |
| Priority date | — |
| Expiry date | Aug 1, 2006 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T403/602
- WIPO fieldOther special machines
- WIPO sectorMechanical engineering
Abstract
A tractor has a typical three-point hitch with lower lift arms and an upper stabilizing arm comprising, in part, of a transverse horizontal rod extending between the lift arms. A pair of connecting structures are mounted on the implement and spaced on the order of the lift arms but being transversely offset therefrom. Each of the connecting structures includes a vertical plate having a U-shaped edge opening vertically for receiving the transverse bar. A link is mounted on the fore-and-aft plate and extends from one position in which it traverses the opening of the U so as to retain the bar in the nip area of the U-shaped edge and a position in which it extends vertically and opens up the U-shaped edge so that the bar may have ingress and egress from the nip area. A latching rod extends from the plate and there is provided an opening in the link that receives the latching rod. The link is mounted on the plate so that it may yield transversely to bypass the latching rod and is biased to lie alongside the plate and to be locked by the latching rod in its first position.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.