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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 |
| 7661440 | Device for selectively regulating the flow rate of a fluid A device for regulating the flow rate of a fluid includes a housing containing a plurality of flow conduits fluidly connecting an inlet and an outlets each of the flow conduits comprising a flow control tube and a resiliently compressive occlusion tube, wherein the ... | 02/16/2010 |
| 7455072 | Device for selectively regulating the flow rate of a fluid A device for regulating the flow rate of a fluid includes a housing containing a plurality of flow conduits fluidly connecting an inlet and an outlet, each of the flow conduits comprising a flow control tube (310, 312, 314) and a resiliently compressive occlu... | 11/25/2008 |
| 7163025 | Vacuum regulating valve A vacuum regulating valve which is simplified in structure and where the flow rate characteristic in evacuating a vacuum vessel is improved, comprises (i) a main valve 1A of a large size which has: a principal body 4 having two main ports 11, 12... | 01/16/2007 |
| 6997202 | Gas storage and dispensing system for variable conductance dispensing of gas at constant flow rate A gas supply system arranged for dispensing of gas at a predetermined flow rate. The system employs a gas dispensing flow circuitry arranged for dispensing gas at selectively variable gas flow conductance conditions, to maintain the flow rate of the dispensed gas at... | 02/14/2006 |
| 5875817 | Digital gas metering system using tri-stable and bi-stable solenoids A digital gas metering system includes inlet and outlet manifolds, a plurality of conduits each extending between the inlet manifold and the outlet manifold, and a solenoid-operated valve in each conduit. At least one of the valves is a tri-stable valve. ... | 03/02/1999 |
| 5009251 | Fluid flow control Disclosed is a variable fluid flow controller for regulating the rate of flow from a source of fluid under pressure, comprising a plurality of unique flow restriction passagways, a valve associated with each passageway, and a rotatable cam for selectively... | 04/23/1991 |
| 4860535 | Power plant for burning a fuel at high pressure and a gas turbine driven by the combustion gases A power plant for burning a fuel at a pressure exceeding atmospheric pressure, in particular a PFBC power plant with a bed vessel enclosed in a pressure vessel, includes a plurality of valves in a hot gas pipe between the bed vessel and a turbine, and an ... | 08/29/1989 |
| 4132153 | Metering control valve and fluid power system A fluid power system including a fluid power cylinder having a piston and fluid ports at its opposite ends, a directional valve for selecting the direction of piston actuation, and a metering control valve coupled between the directional valve and the cyl... | 01/02/1979 |
