Emergency shutoff system and method

Details Emergency shutoff system and method Emergency shutoff system and method

2008-07-22

2008-07-22

Novosad, Christopher J. (Department: 3641)

Planting

Liquid or gas soil treatment

Treating substance includes ammonia

C111S200000, C137S068150, C251S089500, C239S722000, C239S578000

Reexamination Certificate

active

07401562

ABSTRACT:
A safety system is provided for an anhydrous ammonia nurse tank (4) pulled by a tractor (1) with a tool bar applicator (2). The system includes a safety valve (10), and a breakaway coupling or connector (12) along a flexible hose (11) from the nurse tank to the applicator. The safety shutdown valve (10) closes in response to a break in the electrical connector in the event of a pull away or manual activation of a safety switch.

REFERENCES:
patent: 7036441 (2006-05-01), Scudder
Emerson-Fisher, Instruction Manual Type C407-10 Internal Valves, Jan. 2002, 8 pages.

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