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Reward Candy Dispenser for Personal Computers
A personal computer peripheral, battery powered reward candy dispenser which immediately presents students with a single candy for each problem completed correctly.
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| Number | Title | Issue Date |
| 7147772 | Low spillage replaceable water filter assembly A filter assembly includes a water filter assembly having a filter element sealingly disposed in a cartridge, and having an inlet and an outlet, the water filter assembly being substantially dripless when charged with water and disposed substantially horizontally. A... | 12/12/2006 |
| 7134405 | Process The present invention provides a process for dosing a fuel with a fuel additive comprising (i) passing the fuel from a fuel container through a dosing apparatus (ii) dosing the fuel with additive in an amount based on the fuel passing through the dosing apparatus an... | 11/14/2006 |
| 7093606 | Liquid fertilizer injector system for lawn sprinkler systems and irrigation systems A liquid fertilizer injector system attached to a water source by a water source has an inlet line to input the water from the water source line into the liquid fertilizer injector system. The system's components include a holding tank to receive the water from the ... | 08/22/2006 |
| 6973975 | Universal transportable compressed air foam fire fighting system A compressed air/foam fire fighting system which is sufficiently compact to be carried on the bed of a pick-up truck includes a water tank, a pump for providing water at substantial pressure to a water conduit, an engine for driving the pump, a foam reservoir includ... | 12/13/2005 |
| 6966328 | Fluid diversion apparatus A fluid diversion apparatus, which has a first member and a second member, each said member having at least one fluid inlet and at least one fluid outlet, the first member comprising a fluid inlet adapted for connection to a fluid pipe, and a fluid outlet adapted fo... | 11/22/2005 |
| 6955819 | Methods and apparatus for using controlled heat to regulate transdermal and controlled release delivery of fentanyl, other analgesics, and other medical substances The present invention is directed toward an apparatus to rapidly deliver a drug to a patient The invention comprises a drug beneath a patient's skin in a drug depot site. A heating component is placed near the drug depot site and generates heat in and near the drug ... | 10/18/2005 |
| 6921027 | Truck wash automatic chemical ratio proportioning A chemical ratio proportioning apparatus (100, 200) intended primarily for use in a wash bay (10) of a vehicle wash system. A gantry (14) and spray wands (18) are used for washing a vehicle (12). A quantity of solvent such as water... | 07/26/2005 |
| 6418958 | Dual solid chemical feed system A solid chemical feed system, preferably including two feed bowls, comprises a quantity of solid chemicals that dissolve upon immersion in water to form a liquid solution. A sump is provided to receive liquid solution from the feed bowls, the liquid solut... | 07/16/2002 |
| 6415808 | Apparatus and method for controllably delivering fluid to a second fluid stream A device for introducing a first fluid into a second fluid stream comprising an enclosure and a member which causes release of a first fluid. The enclosure releasably retains the first fluid. The release causing member causes the release of the first flui... | 07/09/2002 |
| 5558116 | Metering cap A metering cap in which a first component of a flowable material is squeezed out of a cartridge (C) which can be emptied by means of a press (P). The main component flows through a feed line (8) to an outlet line (11) and, in the process, drives two rotor... | 09/24/1996 |
| 5538027 | Pressure balancing foam valve A pressure balancing foam valve includes a body having a liquid inlet at one end and a liquid outlet at an opposite end, and having an annular passage therethrough. A first stage pressure regulating assembly is disposed within the annular passage of the v... | 07/23/1996 |
| 5490766 | Precision small displacement fluid pump A fluid pump for displacing a small, precise volume of fluid for each pump stroke, particularly where the fluid to be displaced is a liquid containing dissolved gas. The precise volume of fluid to be displaced is adjustable to any selected amount up to th... | 02/13/1996 |
| 5213129 | Fluid mixing device A fluid mixing valve has a canister which defines a chamber divided into an upper additive subchamber and a lower carrier subchamber by a plunger and diaphragm. A pressurized carrier liquid enters the carrier subchamber through an inlet and exits the carr... | 05/25/1993 |
| 5197462 | Anesthetic metering device An anesthetic metering device with a bypass stream 5 passed from a gas inlet opening 2 via a bypass valve 3 to a gas discharge opening 4 and with a vaporizer chamber stream 7 flowing from a vaporizer chamber 6 via an adjusting device. Accurate metering is... | 03/30/1993 |
| 5167800 | Apparatus for treatment of acidic water streams An apparatus and method are described for treating a flowing water stream with a chemical treatment agent. In particular, the apparatus includes a hopper for containing the chemical treatment agent, an auger for discharging the chemical treatment agent fr... | 12/01/1992 |
| 5165442 | Differential valve A fire fighting foam proportioner for use in providing precise proportioning of foam to fire fighting liquid, e.g. water, is disclosed. It includes a tank for the storage of foam concentrate which is loaded using a hand pump. The storage tank is coupled t... | 11/24/1992 |
| 5150822 | Mixing head for dispensing an actine ingredient An apparatus for dispersing an active ingredient, such as a fumigant, fertilizer or room freshener in which the active ingredient is placed in a sample cylinder and a pressurized solvent/propellent is subsequently introduced from a source. The solvent/pro... | 09/29/1992 |
| 5129730 | Fluid mixing device A fluid mixing valve has a canister which defines a piston chamber divided into an upper additive subchamber and a lower carrier subchamber by a piston. A pressurized carrier liquid enters the carrier subchamber through an inlet and exits the carrier subc... | 07/14/1992 |
| 5088517 | Apparatus for admitting flowable additive to a liquid An apparatus for admitting metered quantities of a flowable additive into a liquid stream has a horizontal metering cylinder which is surrounded by a connector supporting a vessel for a supply of additive. The additive is free to flow into the cylinder wh... | 02/18/1992 |
| 5020689 | Metering and dispensing system The invention is concerned with a method and apparatus for dispersing an active ingredient, such as a fumigant. The active ingredient is placed in a container and a pressurized solvent/propellent is subsequently introduced. The solvent/propellent expands ... | 06/04/1991 |
| 5018547 | Pressure actuated valve A pressure actuated valve is normally closed by the action of an externally manually adjustable spring that acts against the back side of the valve element. The valve element surface opposite that of the adjustment spring is exposed to a first port in the... | 05/28/1991 |
| 5009244 | Fire fighting foam mixing system A fire fighting foam proportioner for use in providing precise proportioning of foam to fire fighting liquid, e.g. water, is disclosed. It includes a tank for the storage of foam concentrate which is loaded using a hand pump. The storage tank is coupled t... | 04/23/1991 |
| 4820408 | Double valve apparatus Double valve apparatus is used in a swimming pool chlorinating system for injecting chlorine gas into a swimming pool when a swimming pool pump is operating. Two valve elements move on and off two valve seats for preventing air from bleeding back to the w... | 04/11/1989 |
| 4738541 | Apparatus for mixing fluids An apparatus for mixing fluids in accurate predetermined quantities has a feed line for a first fluid (water) under pressure, a suction line for a second fluid (disinfectant) which is to be mixed to the first fluid, and an injector in the form of a fluid ... | 04/19/1988 |
| 4722358 | Pressure equalizing valve A pressure equalizing valve comprises a valve body with a longitudinally disposed bore therein, and a spool disposed in the bore for longitudinal movement to regulate fluid communication from an inlet port to outlet ports in response to a pressure differe... | 02/02/1988 |
| 4555347 | Iodine disinfection dispenser A method of, and a device for, providing a disinfectant carried by a water supply flowing through a conduit, comprising introducing a predetermined portion of the water into a sealed container having a reservoir and a chamber below the reservoir in interc... | 11/26/1985 |
| 4467964 | Automatic mixing device for use in a shower head A mixing device is disclosed for the purpose of mixing a first fluid with a second fluid contained in a pressurized stream. The device includes a first fluid chamber for holding the first fluid, which includes a closure surface, an inlet, and an outlet, a... | 08/28/1984 |
| 4449543 | Fluid injecting method and apparatus A fluid injector suitable for injecting a fluid into a flowline having a fluid under pressure therein in which a piston divides the interior of a hollow body into a power chamber and a pumping chamber with a piston rod extending through the pumping chambe... | 05/22/1984 |
| 4418869 | Hose mounted fluid mixing sprayer A hose mounted fluid mixing dispenser has a fluid containing bladder inside a bottle. A bottle cap fitting the bottle has a water hose connection, a water passage having a rectilinear portion and a nozzle with an adjustable metering device for introducing... | 12/06/1983 |
| 4381240 | Swimming pool water conditioning system A swimming pool water conditioning system which incorporates a pump-fed, pool water filtration system; a hydrochloric acid-consuming electrolytic chlorine gas generator; and a manifold system to draw the chlorine gas into the flow through the filtration s... | 04/26/1983 |
| 4352374 | Apparatus for diluting a concentrated solution An apparatus and method are provided for diluting a concentrated solution to be analyzed which includes a Y-coupling for combining a diluent and the concentrated solution to form a mixture. The mixture is then divided into first and second parts, such as ... | 10/05/1982 |
| 4329940 | Flow apparatus In a flow apparatus for adding liquid additive to drinking water for cattle, a drinking trough (13) is supplied with treated water from a header tank (18) topped up from a mains supply (15) in response to changes in level in the trough (13). A siphon (19)... | 05/18/1982 |
| 4328821 | Method and apparatus for the chemical treatment of plants A method and apparatus for the chemical treatment of plants using a mixing tank connected to the inlet side of a pre-existing irrigation system having a shutoff valve and antisiphon valve. The tank is connected through an antisiphon valve and a throttling... | 05/11/1982 |
| 4202760 | Apparatus and method for preparation of a hemodialysis solution optionally containing bicarbonate Apparatus and method for make up of a hemodialysis solution and supply of same to an artificial kidney; the solution optionally contains bicarbonate in any desired amount. The apparatus comprises a recirculation loop which mixes a hemodialysis dialysate c... | 05/13/1980 |
| 4137932 | Apparatus for dosing a flowing fluid Apparatus for dosing a flowing fluid, particularly for dosing an airstream with lubricant. The apparatus includes a casing for connection into the fluid flow line and, within the casing, a cartridge with the additive therein. The cartridge comprises a bag... | 02/06/1979 |
| 4084605 | Additive metering system using a centrifugal pump A novel system for metering a relatively viscous fluid into a less viscous fluid using a centrifugal pump is described. In particular, a novel valve for use in the system including a fluid pressure responsive means to actuate a needle valve which is slide... | 04/18/1978 |
| 4074685 | Apparatus for mixing medication with water supply A coiled clear plastic tube is disposed within a wire basket support and contains a liquid medication to be mixed with another liquid, such as water. The inlet end of the coiled tube is connected through a valve to a source of water pressure which serves ... | 02/21/1978 |
| 3998239 | Gas dosing arrangement An arrangement for dosing gas into a flow line comprising a storage vessel divided into two compartments by a movable gas-tight wall, the first compartment being connected directly to the flow line and the second compartment, which holds the dose gas, bei... | 12/21/1976 |
| 3996953 | Apparatus for dosing a flowing fluid A device for dosing a flowing fluid with an additive is disclosed. The device has a casing through which the fluid flows and the additive is contained in a bag of flexible material. One end of the bag is held against rotation and the other end of the bag ... | 12/14/1976 |
| 3976220 | Chlorinator having trip device actuated by line pressure difference A chlorinator for swimming pool systems which releases a charge of chemical in response to the pressure differences generated by the circulating pump. The time during which the discharge valve is open is automatically varied in accordance with the pump pr... | 08/24/1976 |
