Abstract: In a solenoid type fuel injection valve, outer and inner fuel spray guide devices are coaxially disposed downstream of a fuel injection hole, and a pintle is provided at a tip end of a needle valve and projects to extend through the fuel injection hole and opposed to an upper surface of the inner fuel spray guide device. Thus, fuel passing through the fuel injection hole to collide against a valve head of the pintle is sprayed into an intake port, while being atomized and spread into a cone-like shape. At this time, the fuel is blocked by a support arm which extends radially inwardly from a cap to support the inner fuel spray guide device, thereby causing a fuel spray pattern to be formed into a horse's hoof-like shape having fuel non-spray portions. By forming the fuel non-spray portions in correspondence to a rod portion of an intake valve and/or the like, the deposition of the fuel is prevented.

Abstract: An electrostatic spray gun including a housing for receiving a replaceable fluid container, a nozzle from which fluid is to be sprayed, apparatus for expelling the fluid from the container and a high voltage generator for applying electrostatic potential to the fluid to form an electrically charged atomized spray at the nozzle. The replaceable fluid container is externally insulating and the electrical path from the generator passes through the fluid entering it at a point remote from the nozzle. A piston is employed to expel the fluid from the nozzle during spraying. The electrostatic spray gun has the advantage that it does not employ propellants and the paint need not be stored in a flexible plastic container thereby preventing loss of solvent during storage.

Abstract: The present invention relates to a suitable apparatus for cleaning water closets bowls by concentrated water and steam jets and for in disinfecting the bowls. The apparatus includes a portable hand-held dispenser body provided with a water tank, heating element, pump and rechargeable battery supply means. The dispenser is received in a recharging socket having a timing mechanism for setting the period of time electricity is connected to the rechargeable battery in the dispenser body after use. A pawl on the socket that cooperates with the dispenser body prevents the timing mechanism from operating whenever the dispenser body is removed from the socket.

Abstract: A fuel injection device for internal combustion engines having a high pressure accumulation chamber, which can be filled by a high pressure fuel pump and from which high pressure lines lead to the individual injection valves. Control valves for controlling the high pressure injection at the injection valves, as well as an additional pressure storage chamber between these control valves and the high pressure accumulation chamber, are inserted in the individual high pressure lines. For a more rapid pressure relief of the injection valve at the end of injection, the valve member of the control valve has a reaspiration collar, which additionally constitutes a throttle to maintain a residual pressure in the pressure line to the injection valve, which throttle precedes the flat seat valve, which opens the communication of the injection valve to a relief chamber.

Abstract: The present invention includes a flow nozzle with a main body having an annular inlet and an annular outlet. The annular outlet includes a material of fiberglass and ceramic-filled nylon that encloses the orifice. The present invention also includes a method for making a flow nozzle. The method includes providing a main body with an annular inlet and an annular outlet. Next, the main body is positioned in a mold and is molded with a material that includes fiberglass and ceramic-filled nylon so that the fiberglass and ceramic-filled nylon is molded onto the annular outlet. An orifice is defined by the fiberglass-ceramic-nylon material.

Abstract: A reversing switch and more particularly a diaphragm operated electrical polarity reversing switch which has general utility but in the application the reversing switch is disclosed for use in combination with a vehicle mounted spray device including a discharge nozzle which may be used for applying chemicals, liquid fertilizers and other liquids such as when applying such materials alongside of roadways to effectively apply liquid throughout the width of the road right-of-way in which spray nozzles are mounted adjustably on a pivotal arm-type support assembly at the right front of a vehicle and a control arrangement is oriented in the cab of the vehicle to enable the vehicle operator to control the spray apparatus.

Abstract: A safety mechanism for a trigger activated dispenser which dispenses a pressurized fluid includes an engaging piece connected to an upper surface of a dispenser body by a hinge. The engaging piece, the dispenser body and the hinge are molded integrally from a plastic material and an engaging groove is formed on an upper surface of a nozzle cap to receive the engaging piece when the nozzle cap is rotated to an "Off" position. When the engaging piece is received in the engaging groove in the nozzle cap, the nozzle cap is locked in the "Off" state and the nozzle cap is prevented from being rotated to any position at which liquid can flow.

Abstract: An improved safety switch system for hydroblasting and hydrocutting operations. The switch system comprises at least two actuatable triggers each displacing a specified volume of incompressible fluid which, when coupled with a predetermined volume within an actuator, displaces a piston initiating a signal. In specific application within a hydroblasting gun, two separate triggers are depressed displacing a predetermined volume in an actuator adjacent a dump valve. Until the actuator fully closes the dump valve, hydroblasting operations may not begin. In this manner, the chances of accidental discharge through the depression of a single trigger are eliminated and preferred ergonomical characteristics are provided.

Abstract: A lawn care machine including an engine powered mower unit having a front deck element which overlies a blade cutting element and which mounts a liquid storage container for a liquid material spraying unit and a particulate container for a granular spreading unit. The deck being pivotally mounted to the tractor. An operator-seat positioned on the front of the tractor to overlook the front deck.

Abstract: The invention provides an electrostatic spray gun including a replaceable fluid container a nozzle outlet, apparatus for applying high voltage to the liquid and a spring loaded trigger piston for pressurizing the liquid through the outlet. The piston has axially inner and outer parts for forming a lubricant chamber therebetween. The lubricant seals the paint forward of the piston during pressurization and prevents the piston from being locked up during reciprocation.

Abstract: A fuel injection nozzle has a valve member engageable with a seating to prevent fuel flow through an outlet orifice. The valve member is engaged by the narrower end of a stepped piston member the surface of which remote from the valve member is subjected to fuel under pressure to bias the valve member into engagement with the seating. A tubular valve element the interior of which is connected to a drain, is engageable with the surface but can be moved away from the surface to lower the pressure applied to the surface. The valve member lifts away from the seating when the pressure applied to the surface is reduced by fuel pressure acting on a further surface defined on the valve member. The valve element is connected to the armature of a solenoid.

Abstract: An improved aspirator device for the accurate blending of an additive liquid such as a liquid concentrate with a pressurized stream of a main liquid such as water. The improvement involves the use of a metering means composed of at least two plastic injection molded restrictors in serial communication. Each restrictor has, as its smallest diameter fluid passage, a hollow bore of from about 0.005 inches to 0.010 inches in diameter and from about 0.005 inches to 0.010 inches in length wherein the dimensions of each hollow bore are such to provide a volume:volume dilution ratio of the additive liquid to the main liquid of from about 1:500 to 1:2,500.

Abstract: A scent dispensing device comprising a scent impregnated pad of which the side edges are supportingly engaged by the inner side surfaces of a perforated hollow tubular body within which the pad is enclosed. The tubular body is expandable between: (1) a flat-folded, collapsed condition in which a pair of opposing tube wall panels with spaced apart apertures are joined together along their opposite side edges and (2) a dilated condition in which the opposing wall panels bow outwardly of each other creating a tubular body of lenticular cross section of lesser dimension between the wall panel joined side edges than in the flat-folded, collapsed condition. Convex contoured end closure flap members connected to extend across the width of each opposing wall panel at their ends are displaceable inwardly of the opposing wall panels to close the tubular body and establish the dilated condition. The width of the impregnated pad is substantially that of the lenticular lesser cross sectional dimension.

Abstract: A method and apparatus for continuously making and distributing snow. The apparatus includes a first and second tube through which compressed air and water are flowed. The tubes have outlet portions where the water and air impinge on a cup shape nozzle head. The air and water are flowed at a substaintially constant pressure but the decompressed air has a greater velocity at the outlet portion than the water to aid in cooling. The water impinges on the atomizing surface of the nozzle head to produce small droplets which in the ambient creates snow for example for skiing.

Abstract: A system for spraying water-based adhesive and a method of using the system is disclosed. The system includes a hot air gun connected to both a source of hot pressurized air and a source of flowable adhesive. The gun includes a body having a handle assembly and a spraying assembly. The handle assembly includes a depressible trigger and first knob for adjusting the amount of flowable adhesive in the spray gun and a second knob for adjusting the pattern of the spray. The spraying assembly includes a spray nozzle and control valves operably connected with the trigger for controlling the flow of pressurized hot air and adhesive. The spraying assembly also includes an air routing insert for routing air currents to the nozzle and an adhesive fluid tube for routing adhesive fluid to the nozzle. The adhesive fluid is atomized upon leaving the nozzle when combined with the hot pressurized air.

Abstract: A tamper proof fountain attachment adapted to be mounted on a water faucet, the fountain attachment including a base member having a flow path aligned with the faucet and a passage transverse to the flow path, a spigot assembly mounted in the passage for movement between open and closed positions with respect to the flow path, a cover permanently mounted on the top of the base member for connecting the base member to the faucet, a cap permanently mounted on the bottom of the base member, the spigot assembly including a shaft having an offset bore on one end for directing water angularly upwardly from the spigot assembly and a spring for biasing the shaft to a closed position in the base member.

Abstract: A fuel injection device for internal combustion engines having a high pressure accumulation chamber, which can be filled by a high pressure fuel pump and from which high pressure lines lead to the individual injection valves. Control valves for controlling the high pressure injection at the injection valves, as well as an additional pressure storage chamber between these control valves and the high pressure accumulation chamber are inserted in the individual high pressure lines. In order to be able to carry out a shaping of the course of injection at the injection valve, the control valve has a hydraulic throttle segment disposed at an additional collar on the valve member as well as a damping chamber formed between the collar and a flat valve seat, whose throttled relief delays the opening motion of the valve member at the onset of injection.

Abstract: A hydraulically actuated fuel injector includes an intensifier piston with a tapered or conical protuberance and an injector body with a conical seat. During the pre-injection stage, the piston is spring loaded to seat its conical protuberance against the conical seat of the injector body. To start the injection, actuation fluid is admitted to the injector. The injector actuation volume is pressurized and the pressure acts initially only on the top of the conical protuberance of the piston. The displacement of the piston is temporarily retarded during the first stage of injection due to a throttling effect in allowing the high pressure fluid to act on the remaining top surface of the piston. The throttling effect is provided by the relatively narrow flow area between the conical protuberance and the conically shaped seat.

Abstract: An improved orchard or grove sprayer having a rigid tubular member arranged to receive the discharge from a blower, flexible upper and lower sleeves secured to the rigid member, and turning vanes secured in the rigid member to direct the majority of air discharged from the blower into the upper flexible sleeve. A clevis and pin located below the lower sleeve connect the sprayer to a trailer carrying a tank, and the flexible sleeve permits inserting and removing the pin while the blower is inoperative. A support post stabilizes the upper sleeve.

Abstract: A water play toy includes a base and a platform pivotally secured over the base so as to be stepped on and pivoted. Several pairs of valves and nozzles are provided around the outer periphery of the toy between the platform and base with each valve positioned to be contacted by and depressed by the platform as the platform pivots onto such valve. Four spaced apart pivot members define eight primary axes over which the platform will pivot to open one, two or three of the adjoining valves at the same time. When the platform is stepped on within an area surrounded by the pivot members and with sufficient force, the platform is depressed vertically and all four valves are depressed and open. A simultaneous depression of all valves can be prevented by supporting the platform directly on the pivot members before activation.