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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 |
| 7435081 | Method and system for pilot light safety A gas valve includes a gas inlet in fluid communication with a first chamber, a second chamber in selective fluid communication with the first chamber, a gas outlet in selective fluid communication with the second chamber, a pilot light outlet in fluid communication... | 10/14/2008 |
| 7296426 | Interactive control system for an HVAC system An interactive system for controlling the operation of an HVAC system is provide that comprises a thermostat for initiating the operation of the HVAC system in either a full capacity mode of operation or at least one reduced capacity mode of operation, and a control... | 11/20/2007 |
| 7252502 | Method and system for combined standing pilot safety and temperature setting The method and apparatus provides a controller (which might comprise a microprocessor) that can control gas flow to a pilot burner in fluid communication with a manual pilot valve and an automatic pilot valve. The exemplary embodiments can comprise a selectable inpu... | 08/07/2007 |
| 6920377 | Self-sustaining control for a heating system A self-sustaining control for a heating system, having conventional operational modes and pilot burner assembly, is disclosed. A controller directs operation in accordance with a need-based protocol and monitors the condition of a storage device, which provides syst... | 07/19/2005 |
| 6786225 | Three-stage relay control A three-stage relay control is provided for regulating the flow of gas through, for example, gas valves. The relay control includes a control arm for providing three levels of gas flow and having three adjustment screws, one for controlling the flow at each stage of... | 09/07/2004 |
| 6505099 | Radiant energy control system In a radiant energy heating system having one or more types of radiant energy heating sub-systems, a control system comprising a solid state electronic control panel pre-programmed to control two or more of the types of radiant heating sub-systems, wherei... | 01/07/2003 |
| 6109531 | High reliability heating system A high reliability heating system that includes dual furnace control mechanisms wherein each furnace control mechanism includes blowers and control elements and each is independently operable to control the operation of a shared furnace burner unit and he... | 08/29/2000 |
| 4903893 | Automatic device for controlling the supply of fuel to a heater An automatic device for controlling the supply of fuel to a heater which includes magnetic device units operatively associated with on/off switches, respectively, and a thermostat operatively connected to the switches, whereby one of the switches is actua... | 02/27/1990 |
| 4699586 | Method for igniting a multiburner furnace A method for igniting a multiburner furnace safely and reliably without need for an additional furnace purge if not all burners ignite initially, comprising attempting reignition at defined low firing rates and supplying fuel and oxidant to unignited burn... | 10/13/1987 |
| 4422067 | Dynamic self-checking safety circuit means A safety circuit which connects a condition responsive circuit to a cyclic signal detecting circuit. In order to provide the cyclic signal detecting circuit with a continuous cyclic input, the condition responsive circuit and a cyclic redundancy checker i... | 12/20/1983 |
| 4092094 | Method and apparatus for the controlled distribution of powdered solid fuel to burning units Both method and apparatus are disclosed for controlling the distribution of powdered solid fuel to one or more burners. The powdered solid fuel is caused to pass downwardly through an air current passing from an air inlet to one or more outlet ports. The ... | 05/30/1978 |
| 4070670 | Automatic shut-off and alarm for stove heating unit The invention relates to a safety control shut-off device for the heating element of a cooking stove. In one embodiment of this safety device, a burner plate of the stove is provided with several declining U-shaped grooves for collecting any spillage or o... | 01/24/1978 |
| 4052976 | Non-tracking solar concentrator with a high concentration ratio A nontracking solar concentrator with a high concentration ratio is provided. The concentrator includes a plurality of energy absorbers which communicate with a main header by which absorbed heat is removed. Undesired heat flow of those absorbers not bein... | 10/11/1977 |
| 4052136 | Marine stove safety controls A thermostat is arranged to be responsive to the temperature of flue gases from an oil burning heater and actuates switches when the temperature of the flue gases reaches either a predetermined high value or a predetermined low value. The switches are eff... | 10/04/1977 |
| 3997107 | Servo modulating regulating control system A servo valve control system exemplified by way of temperature controlled gas valves. Multiple slave pressure regulating valves are utilized supplying multiple burner manifolds. The first valve of the group of valves is modulated in response to temperatur... | 12/14/1976 |
| 3976243 | Gas fuel control system for multiple brooder installations A gas fuel supply control system for a plurality of poultry brooders arranged in a series and each having a gas fired main burner. The control system includes an electrically activated main gas regulating valve device electrically controlled by electrical... | 08/24/1976 |
