Mobile agricultural sprayer with additive concentration control
Patent 4121767 Issued on October 24, 1978. Estimated Expiration Date: 
July 26, 1996. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
July 26, 1996. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent References 3223108 3299787 3770198 3771542 3784100 3865308 InventorApplicationNo. 05/708544 filed on 07/26/1976US Classes:239/71, WITH SIGNALS, INDICATORS, RECORDERS, METERS OR CHANGEABLE EXHIBITORS137/92, By viscosity or consistency137/93, By optical or chemical property239/124, WITH SYSTEM FLUID RELIEF OR RETURN TO SUPPLY239/156, Ground wheel operated discharge means or controller239/307, And carrier fluid supply239/308, Holder for carrier fluid239/310To be mixed, dissolved or entrained in a flowing liquid stream prior to dischargeExaminersPrimary: Blunk, Evon C.Assistant: Kashnikow, Andres Attorney, Agent or FirmInternational ClassesA01M 7/00 (20060101)G05D 21/00 (20060101) G05D 21/02 (20060101) B01F 15/04 (20060101) B05B 7/26 (20060101) B05B 7/24 (20060101) B01F 3/08 (20060101) AbstractA mobile agricultural sprayer having a control system for controlling the amount of chemical additive added to a water stream from a mobile storage tank in response to a chemical additive concentration detector is disclosed. The mobile sprayer utilizes a mobile water storage tank and at least one chemical additive tank which communicates with the water to be sprayed at a point between the tank and the sprinkler heads. A pump draws water from the storage tank and directs it under pressure to the sprinkler heads. The chemical additive is typically added in liquid form, such as a solution or a slurry, at a point preferably upstream of the pump inlet while concentration is measured at a point between the point of addition of the chemicals and the sprinkler heads and preferably before the inlet of the pump. The concentration detector transmits information to a monitor which controls the amount of chemical introduced into the water to be sprayed.Field of SearchWITH SELECTIVE PROPORTIONING OR CORRELATED FLOW FOR PLURAL FLUIDSWITH SIGNALS, INDICATORS, RECORDERS, METERS OR CHANGEABLE EXHIBITORS Audible Position or extent of motion indicator With spray material quantity or flow indicating means (e.g., sight gauge) WITH SYSTEM FLUID RELIEF OR RETURN TO SUPPLY Ground wheel operated discharge means or controller Aircraft carried Vehicle drawn or carried Plural holders for diverse materials Two or more spray-material holders Choice of any one material only And carrier fluid supply Holder for carrier fluid To be mixed, dissolved or entrained in a flowing liquid stream prior to discharge Branching flow and recombining in terminal member | |
