William F. Semple, a dentist, was awarded the first US Patent on chewing gum in 1869. His recipe contained powdered chalk.
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| Number | Title | Issue Date |
| 7861946 | Nozzle apparatus A nozzle apparatus for an agricultural crop sprayer, the apparatus having a control element adjustable using ah external power source for controlling the flow of a spray liquid from a spray line through at least one channel of the nozzle apparatus. Once the control ... | 01/04/2011 |
| 7438764 | Spray assembly for paving machine A spray assembly for applying a fluid material to a surface includes a first spray bar and a second spray bar, each of which is mounted for movement along an axis. Each spray bar includes a plurality of nozzles, each of which is associated with a valve that can be o... | 10/21/2008 |
| 7270749 | Pump system A pumping system comprising: (a) an inlet adapted for connection with a supply of low pressure water; (b) a filtration unit in fluid communication with the inlet, wherein the filtration unit filters impurities from the low pressure water so as to discharge a flow of... | 09/18/2007 |
| 7175104 | Backpack with sprayer An apparatus for spraying chemicals in a forestry environment includes a back pack supported reservoir for containing such chemicals and a variable speed pump for urging the chemicals from the reservoir through a rearwardly oriented spraying unit. Positional and del... | 02/13/2007 |
| 7124792 | Manual bulk liquid pump control and distribution system The present invention is directed to a manual bulk liquid pump control and distribution system that utilizes a single-handle manual operation for direction of flow and speed, along with providing a neutral position for standby. The system can be operated at a rate o... | 10/24/2006 |
| 7108196 | Method and apparatus for depositing snow-ice treatment liquid on pavement Method and apparatus for depositing liquid brine on roadway surface. Substantially horizontally disposed streamer nozzles are employed in conjunction with brine pumps which are operated in correspondence with the forward speed of the treatment vehicle. Substantially... | 09/19/2006 |
| 7066402 | Spraying device for spraying liquids, in particular, for spraying liquids for agricultural purposes A Spraying assembly for spraying liquids for agricultural purposes is provided whose respective sprayer valves attached to a common liquid supply line are at least configured in the form of valve housings whose pair of valve channels share a common distributor bore.... | 06/27/2006 |
| 7048008 | Gas-panel assembly A fluid manifold and components for constructing the fluid manifold having a plurality of separate fluid-flow pathways. The manifold comprises a plurality of pipe modules which form said fluid-flow pathways and a plurality of block modules which can be joined togeth... | 05/23/2006 |
| 7021332 | Hydraulic valve section with reduced bore distortion A spool valve section for a multiple valve assembly has a body with two opposing side surfaces. A plurality of mating surfaces are raised from each side surface. The mating surfaces surround the openings of fluid passages through the section and apertures for fasten... | 04/04/2006 |
| 6969010 | Landscape and agricultural sprayer foam marking attachment A foam marking attachment to a lawn and garden tractor or tractor mounted agricultural implement spray apparatus attaches to a low voltage DC power supply of the tractor, applying a left or right side droplet of liquid marking foam to the outer edge of a traveled pa... | 11/29/2005 |
| 6942735 | Adjustable spray apparatus with multiple outlets An adjustable spray apparatus with multiple outlet for applying a flowable coating onto a non-vertical surface. A carriage includes an outwardly extending arm with a plurality of downwardly facing spray tips connected to a manifold mounted on the carriage. The manif... | 09/13/2005 |
| 6932282 | Water supply system for a fuel cell Apparatus for supplying water to a plurality of individually controllable water injectors, has a pump adapted to provide water under pressure to the water injectors. Each water injector has associated therewith a respective controllable solenoid valve to control the... | 08/23/2005 |
| 6802464 | Device for spreading liquid binder and roadstone behind a road making machine The device comprises a roadstone spreader having roadstone flap-doors which are juxtapositioned the transverse direction and which are of equal width, and a rail for spreading bituminous binder facing spreading zones for roadstone via the roadstone flap-doors. The r... | 10/12/2004 |
| 6776355 | Sprayer section control valve switching A sprayer switching control system includes toggle switch structure incorporated into the main control handle of the sprayer and toggling spray sections sequentially so that each section changes condition in turn as the switch structure is operated. A reset switch l... | 08/17/2004 |
| 6749128 | Spray control device A spray control device for use with vehicle mountable spraying apparatus having a pump for conveying fluid under pressure to a spray head. The control device has a pressure sensor for sensing the pressure of the fluid near the spray head. A speed sensor enables calc... | 06/15/2004 |
| 6739526 | Spray bar assembly A coating apparatus for coating a material to be coated with a solution is disclosed, preferably for coating pharmaceuticals. A spray bar having a spray gun receptacle, a solution inlet conduit and an atomizing air conduit is disclosed. The spray gun is positionable... | 05/25/2004 |
| 6698668 | Shielded plot sprayer A mobile shielded plot sprayer including a wind shield having a side wall that defines an enclosed area, and a movable atomizer within the enclosed area. A track assembly is located within the enclosed area and supported on the windshield. The atomizer is... | 03/02/2004 |
| 6499670 | Directional control valve and valve assembly in an asphalt distributor A directional control valve having three positions controls the direction of flow through an asphalt distributor. The directional control valve is interposed between a pump and a feed line assembly to a spray bar. The directional control valve has a first... | 12/31/2002 |
| 6454183 | Sprayer boom A sprayer boom on a vehicle serves for by means of a number of liquid nozzles spraying a carriageway with a liquid fed under pressure to the nozzles from a storage container via a feed pipe. The nozzles are divided into sets with each their valve arrangem... | 09/24/2002 |
| 6446879 | Method and apparatus for depositing snow-ice treatment material on pavement Apparatus and method for depositing salt granular materials upon a highway pavement at practical speeds. A highway truck is utilized which employs two spaced apart ejector mechanisms which function to deposit a continues narrow band of mixed salt and brin... | 09/10/2002 |
| 6443365 | Discriminating ground vegetation in agriculture A method and device for discriminating different types of ground vegetation in agriculture is disclosed in which an artificial source (24) of electromagnetic radiation is employed for directing a beam (26) of radiation onto the vegetation. A sensor assemb... | 09/03/2002 |
| 6367713 | High definition rain curtain A water display which contains a plurality of drip tubes that are suspended from a structure, and periodically drip droplets of fluid in a manner that simulates "rain fall". The tubes are attached to a tank that contains a ballast and a volume of fluid. W... | 04/09/2002 |
| 6336600 | Self-propelled material spreader A self-propelled lawn and garden spreader that can be used to apply granular and/or liquid materials to both wide and narrow areas at a constant rate of application per unit area at different ground speeds, such as at a relatively high speed when the oper... | 01/08/2002 |
| 6250564 | Flow control system for sprayer nozzles The present invention relates to a flow control system for sprayer nozzles. The control system includes a solenoid coil and a solenoid plunger. The solenoid plunger can slide into an adapter body, substantially perpendicular to the direction of fluid flow... | 06/26/2001 |
| 6244520 | Spray boom and a method of spraying A spray boom (1) is provided in which the spray boom (1) comprises one or more outlet nozzles (4) and one or more actuator means (9) each of which drives at least one outlet nozzle clearing means (10). The spray boom provides for the accurate dispensing o... | 06/12/2001 |
| 6206300 | Aerosol generator This invention provides a mobile aerosol generator which enables the vehicle operator to remotely reposition the droplet launch trajectory during normal operation of the generator and the vehicle. Azimuth and elevation launch directions are controlled sep... | 03/27/2001 |
| 6196473 | Spray nozzle, and also spray boom provided therewith Spray nozzle for a spray boom to be fixed to a crop protection machine or the like. The spray nozzle is fixed on a supply line for spraying a fluid. The spray nozzle consists of a spray nozzle holder and a spray nozzle head. The passage of the inflow aper... | 03/06/2001 |
| 6193166 | Spray nozzle arrangement An assembly 10 fed by a pressurised pipe 2 and comprising three differently rated spray nozzles 11, 12, 13 is mounted on a spray boom so that 11, 12 and 13 traverse the same area. The nozzles 11, 12, 13 are independently remotely pneumatically controlled ... | 02/27/2001 |
| 6189807 | Valve controlled spraying system A spraying system having a control valve with an inlet port for connection to a liquid supply, a discharge port for connection to a spray nozzle, and a return port for connection to the liquid supply. The control valve includes a valve member which has a ... | 02/20/2001 |
| 6126088 | Extended rate range sprayer nozzle system A nozzle mounting and control system for use in sprayers comprising multiple sets of nozzles mounted in the operating position on a sprayer boom. Control valves are operable to select which sets of nozzles are operating at any given time. The valves may b... | 10/03/2000 |
| 6036107 | Control valve arrangement for spraying systems A spraying system is provided with a plurality of spray sections, a discharge line coupled to each of the spray sections, and a control valve connected to each discharge line for regulating the flow of liquid from the discharge line to the spray section. ... | 03/14/2000 |
| 6015097 | Floor coating machine A machine for applying a liquid coating material such as floor wax, carpet protector or sealer, to a flat surface, such as a floor or the like, includes a first sealed vessel for containing compressed gas and a second sealed vessel for containing the liqu... | 01/18/2000 |
| 5971294 | Agricultural application systems with improved spray control A spray system is provided with improved spray control having decreased injection lag, and reducing non-uniformity in injection lag throughout the length of a spray boom. A pump is coupled to spray nozzles installed along the spray boom by manifolds which... | 10/26/1999 |
| 5947346 | Apparatus for dispensing asphalt A mobile asphalt dispenser for applying strips of asphalt having prescribed widths to a roof. The dispenser has a frame including an asphalt container for holding the asphalt. At least one wheel is rotatably mounted on the frame. A valve assembly is provi... | 09/07/1999 |
| 5907925 | Method for treatment of waste material A method of treating waste materials such as city or animal sewage which may contain toxic chemicals includes supplying the waste materials in slurry form using a dispensing machine in the field to a fibrous crop material so that the waste materials, wate... | 06/01/1999 |
| 5865549 | Apparatus for applying a coating to a substrate A device for applying a fluid coating, including a feed tube assembly having a plurality of feed tubes and valves for controlling the flow of fluid through each of the tubes, an extrusion tube coupled to each feed tube, and a fluid spreader coupled to the... | 02/02/1999 |
| 5772114 | Individually controlled nozzle valve system for application of liquid fertilizer/chemicals A system for applying fluid to a ground surface, the system includes (a) a plurality of nozzle valves, (b) a control switch and open and close manifold valves for operating each nozzle valve so that each nozzle valve closes essentially concurrently, and (... | 06/30/1998 |
| 5741090 | Injector for polymer placement and method therefore A system and method for injecting liquid/solid mixtures into porous pulse media, such as earth, is disclosed. A two-tank arrangement where liquid only is stored and run through a main pump, while a liquid/solid slurry is stored and moved to join the liqui... | 04/21/1998 |
| 5522543 | Water truck with exhaust gas pressurization system A pressurization system for a tank on a water truck includes a pipe connected at one end via a remotely controllable three-way valve directly into the engine exhaust system of the truck and at the other end into a top portion of the water tank. Engine exh... | 06/04/1996 |
| 5310115 | Sprayer having a folding boom A sprayer having a folding boom is disclosed which includes a main spray bar mounted at the rear end of a small vehicle or a trailer. First and second intermediate boom sections are pivotally connected, about horizontal axes, to the outer ends of the mean... | 05/10/1994 |