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Plant permitting spraying proportioning to the space covered, applicable in particular to agricultural sprayers

  • US 4,083,494 A
  • Filed: 02/09/1976
  • Issued: 04/11/1978
  • Est. Priority Date: 02/07/1975
  • Status: Expired due to Term
First Claim
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1. A mobile spraying plant, which comprises multiple spray heads disposed end to end in substantial alignment, a feeding pump means, means for delivering the spray product output of said feeding pump means to said spray heads, valve means associated with each individual spray head by which the flow of spray product can be shut off and one or more individual spray heads thus rendered inoperative as desired, regulating means operative to decrease the output of said pump means to match the pump output to the number of individual spray heads rendered operative, thereby to ensure that the spraying rate per unit area is maintained constant whatever such number may be, wherein the feed to each individual spray head is controlled by an electrically operated valve, and said regulating means comprises, in respect of each electrically operated valve, an element which is inoperative when that valve is open and operative when it is closed.

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