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 |
| 7987844 | Catalyzed hot gas heating system for concentrated solar power generation systems A solar power generation system includes a fluid housing, a solar collector, and a heating system. The fluid housing contains a heat transfer medium. The solar collector concentrates solar energy onto the heat transfer medium. The heating system includes at least on... | 08/02/2011 |
| 6119682 | Water heater and storage tank The invention provides a low-profile, solar energy powered, thermosyphon-circulated water heater and storage device (10) comprising: a flat, tilted solar radiation absorber panel (12); an insulated hot fluid storage tank (18); a conduit (20) providing flu... | 09/19/2000 |
| 4390008 | Hot water tank for use with a combination of solar energy and heat-pump desuperheating A water heater or system which includes a hot water tank having disposed therein a movable baffle to function as a barrier between the incoming volume of cold water entering the tank and the volume of heated water entering the tank which is heated by the ... | 06/28/1983 |
| 4350144 | Hot water heating system A system for heating domestic hot water includes solar collectors for raising the temperature of the water in the usual hot water storage tank. When a tap is opened, the water is drawn out of the tank and directed through a mixing valve which checks the t... | 09/21/1982 |
| 4341201 | Solar energy collecting and utilization system A solar energy collecting and utilization system is provided which comprises a lens matrix formed by a plurality of lens units disposed in a generally planar array. Each unit comprises a plurality of lenses arranged in a dome-like configuration and having... | 07/27/1982 |
| 4331129 | Solar energy for LNG vaporization Disclosed is an apparatus for vaporizing a normally gaseous fluid which is in liquefied state which apparatus employs solar energy for heating a second fluid which preferably is water, which solar heated second fluid is passed into heat exchange relations... | 05/25/1982 |
| 4319561 | Solar energy collector assembly A solar energy collector assembly is provided which finds particular utility when interconnecting a plurality of tubular solar energy collectors with each other, in parallel, to form a bank of collectors, and when interconnecting a plurality of such banks... | 03/16/1982 |
| 4314547 | Solar hot water system with sub-loop hydronic heating A system is provided for heating a building with solar energy by means of solar panels provided with hydronic sub-loops which connect with radiators separately heated by a furnace. Each hydronic sub-loop serves to supplement heat from the furnace and, whi... | 02/09/1982 |
| 4309986 | Solar heater A self-pumping solar liquid heating system which includes two solar collectors, a high temperature collector for generating vapor which expands and pumps fluid through the system, and a separate collector for collection of heat of utilization. A heat pipe... | 01/12/1982 |
| 4308042 | Heat pump with freeze-up prevention What is disclosed is a heat pump apparatus for conditioning a fluid characterized by a fluid handler and path for circulating the fluid in heat exchange relationship with a refrigerant fluid; at least two refrigerant heat exchangers, one for effecting hea... | 12/29/1981 |
| 4307708 | Solar heated building A solar heating system for a building is disclosed. The solar heating system includes a solar collector and conduits leading from the solar collector to a plurality of heat sinks. The conduits contain an antifreeze solution for carrying the heat from the ... | 12/29/1981 |
| 4301965 | Heat collector system The heat collector system comprises a heat collector connected to a heat p. The heat collector has an inlet conduit and contains a heat transmitting fluid and is effective to take radiation heat from the environment. The heat collector has a structural c... | 11/24/1981 |
| 4294227 | Apparatus for heating water by solar heat Apparatus comprising a solar collector, three heat exchangers operating at different temperature levels and connected in series on the service-water side, a latent-heat store, various lines and valves, a circulating pump and an electrical operation-contro... | 10/13/1981 |
| 4257397 | Solar water heater An apparatus for heating water with solar radiation incorporates an auxiliary heating unit, external to the hot water reservoir and bypassing the solar heating element, for providing auxiliary water heating whenever the temperature in a selected portion o... | 03/24/1981 |
| 4159017 | Solar panel system A solar heating panel has a rectangular frame to receive a rectangular metal pan which supports a continuous coil of water tubing which is attached thereto by strips of metal attached to the pan. Preferably, the frame is divided into quadrants by rails. E... | 06/26/1979 |
| 4137900 | Solar heating system A solar heating system including a specially designed tank divided into zones in which heat is stored in water, the hottest water in each zone rising to the top thereof by convection. A solar flow circuit draws water from the bottom of the coldest zone, a... | 02/06/1979 |
| 4061267 | Solar heating system and operation thereof A solar heating system, using a pebble bed as a heat storage, includes an auxiliary heater, providing heat for the system and/or for the pebble bed during times of low solar heat accumulation and during off-peak use loading of the public utility network s... | 12/06/1977 |
| 3991938 | Combination heat pump and low temperature solar heat absorber A combination heat pump and solar heat absorber includes an outside conduit acting as an evaporator and heat absorber in cold weather and as a condenser and heat dissipator in warm weather. The heat absorber is exposed to the sun, and a spray device enabl... | 11/16/1976 |