Quotables
"The abolishment of pain in surgery is a chimera. It is absurd to go on seeking it...knife and pain are two words in surgery that must forever be associated in the consciousness of the patient."
Dr. Alfred Velpeau, French surgeon ; 1839
PatentStorm News
Make the Most of PatentStorm
See this month's Top Inventors and Most Cited Patents.
Stay on top of the latest patents by subscribing to an RSS feed.
Got questions? Ask a Patent Expert!
Registered users: Manage your profile, comments and alerts.
US Patent 4121767 - Mobile agricultural sprayer with additive concentration control
US Patent Issued on October 24, 1978
Estimated Patent Expiration Date:
July 26, 1996Estimated 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.
Estimated Patent Expiration Date:
July 26, 1996Estimated 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.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. | 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 dischargeField of Search239/61, WITH SELECTIVE PROPORTIONING OR CORRELATED FLOW FOR PLURAL FLUIDS239/71, WITH SIGNALS, INDICATORS, RECORDERS, METERS OR CHANGEABLE EXHIBITORS239/72, Audible239/73, Position or extent of motion indicator239/74, With spray material quantity or flow indicating means (e.g., sight gauge)239/124, WITH SYSTEM FLUID RELIEF OR RETURN TO SUPPLY239/156, Ground wheel operated discharge means or controller239/171, Aircraft carried239/172, Vehicle drawn or carried239/303, Plural holders for diverse materials239/304, Two or more spray-material holders239/305, Choice of any one material only239/307, And carrier fluid supply239/308, Holder for carrier fluid239/310, To be mixed, dissolved or entrained in a flowing liquid stream prior to discharge239/317Branching flow and recombining in terminal memberExaminersPrimary: Blunk, Evon C.Assistant: Kashnikow, Andres Attorney, Agent or FirmUS Patent References3223108, 3299787, 3770198, 3771542, 3784100, 3865308International 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) |
