Hitch and coupling arrangement for automatically effecting...

Details Hitch and coupling arrangement for automatically effecting... Hitch and coupling arrangement for automatically effecting...

2008-07-24

2010-12-14

Winner, Tony H. (Department: 3611)

Land vehicles

Wheeled

Articulated vehicle

C280S420000, C280S477000, C280S504000, C137S015090, C172S047000

Reexamination Certificate

active

07850190

ABSTRACT:
An NH3applicator implement is equipped with a hitch arrangement for automatically effecting a connection with a tongue of an NH3nurse 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 NH3by remote actuation of a main on/off valve located at the nurse tank.

REFERENCES:
patent: 2844390 (1956-11-01), Smith
patent: 3788348 (1974-01-01), Johnson
patent: 4131295 (1978-12-01), Highberger
patent: 4346911 (1982-08-01), Wiese
patent: 4998560 (1991-03-01), Le Devehat
patent: 5005877 (1991-04-01), Hayman
patent: 5343958 (1994-09-01), Kromminga et al.
patent: 5413182 (1995-05-01), Kromminga et al.
patent: 6450545 (2002-09-01), LeMay et al.
patent: 6938636 (2005-09-01), Nimberger
patent: 6969093 (2005-11-01), LeMay et al.

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