Hitch and coupling arrangement for automatically effecting towing hitch and fluid quick-coupler connections between a nurse tank wagon and an NH3 applicator implement
US7850190B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | Jul 24, 2008 |
| Grant date | Dec 14, 2010 |
| Priority date | — |
| Expiry date | Apr 11, 2029 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/86493
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
An NH3 applicator implement is equipped with a hitch arrangement for automatically effecting a connection with a tongue of an NH3 nurse tank wagon. A quick-connect coupler assembly is provided for connecting the transfer hose of the nurse tank wagon to the supply hose of the implement. The quick-connect coupler assembly includes a first coupler section mounted to the applicator implement for powered, guided movement into engagement with a second coupler section mounted to the tongue of the nurse tank wagon. An electro-hydraulic control system including relay logic is used to first lock the fully coupled coupler sections together and then to engage the flow of NH3 by remote actuation of a main on/off valve located at the nurse tank.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.