The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.
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| Number | Title | Issue Date |
| 7357440 | Camper A camper having passive solar climate controls. The camper has a solar structure carried by a base. The solar structure includes a cover, a window panel, a ridge vent, a plurality of awnings, and a plurality of side panels. The ridge vent and the awnings are carried... | 04/15/2008 |
| 7318432 | Solar collector plate method for safeguarding the operation of a solar collector and method for manufacturing a solar collector plate A solar collector plate (2) has a solar radiation receiving front absorber plane (3) that is wiped at its rear side by a cooling liquid (4) flowing in channels (5). Cavities (7), preferably behind the channels (5) and integr... | 01/15/2008 |
| 7308792 | Steam power plant arrangement A steam power plant arrangement with a steam turbine and a steam generator, a condenser and a preheating system is characterized according to the invention in that the steam generator, the condenser and the preheating system are configured as individual functionally... | 12/18/2007 |
| 7240675 | Parabolic trough collector The parabolic trough collector has a receiver formed by several single absorber tubes (13). The single absorber tubes (13) are supported by absorber tube supports (14) and surrounded by a glass tube (15). Because of different expansion be... | 07/10/2007 |
| 7219723 | Integrated control system for beam pump systems The present invention generally provides apparatus and methods of operating a pumping system. The pump control apparatus includes a first sensor for measuring strain on a structure of the well pumping system and a second sensor for measuring a position of the struct... | 05/22/2007 |
| 7077124 | Wall integrated thermal solar collector with heat storage capacity A wall integrated thermal solar collector with heat storage capacity includes a transparent layer and a solar radiation absorption layer, that is separated by an air gap from the transparent layer. A heat storage layer of phase changing material is positioned in clo... | 07/18/2006 |
| 7028685 | Air conditioning system for buildings and air-conditioned building, especially a zero energy house A method of air-conditioning a building with low heat loss, having the following steps: providing a fresh-air/outgoing-air system for feeding fresh air through a heat accumulator being located beneath said building and extracting said outgoing air through the heat a... | 04/18/2006 |
| 7013887 | Absorber pipe for solar heating applications The absorber pipe (1), especially for a parabolic collector for a solar heat collecting apparatus, is described. The absorber pipe (1) includes central metal pipe (3), a glass sleeve tube (2) surrounding the nine so that an annular space ... | 03/21/2006 |
| 6962150 | Pool heating system A modular swimming pool water heating system including a first casing for mounting in an attic of a building, a heat exchange unit removably mounted in said first casing, an opening in said first casing permitting access to the interior of the first casing for recei... | 11/08/2005 |
| 6957536 | Systems and methods for generating electrical power from solar energy Systems and methods capable of producing electrical power from solar energy through the use of air cycles without fossil fuel combustion. The system includes a solar receiver, a generator, a compressor, and an expander. The expander is coupled to the generator to dr... | 10/25/2005 |
| 6931851 | Solar central receiver with inboard headers A solar power plant having a plurality of receiver panels mounted in a circular fashion about a solar receiver. Each receiver panel includes a plurality of tubes that terminate at each end at a header. To eliminate the presence of gaps between the tubes of adjacent ... | 08/23/2005 |
| 6922908 | Vegetable product drying A dryer is constructed and arranged to dry vegetable product, such as coffee beans. The dryer includes a thermal collector that is constructed and arranged to convert solar energy to heat energy, a heat transfer system, and a housing that defines a drying chamber. T... | 08/02/2005 |
| 6899097 | Solar blackbody waveguide for efficient and effective conversion of solar flux to heat energy A solar blackbody waveguide that captures and uses sunlight to heat a thermal working or heat transfer fluid. Solar cell arrays capture the sunlight. The arrays are movably mounted on solar towers to track the daily movement of the sun and to maintain the proper ang... | 05/31/2005 |
| 6532952 | Heating and cooling solar system control module A control for a solar-heating and ventillation-cooling air type solar system has temperature sensors, dual air distribution valves, valve actuators and a fan-integrated into a single module that is removably mounted together with a modular solar system en... | 03/18/2003 |
| 5507275 | Solar shower A reservoir for storing and solar-heating water, a shower head, and means in fluid communication between said reservoir and said shower head for adjusting a temperature of water leaving said shower head. The shower preferably includes a source of temperat... | 04/16/1996 |
| 4982723 | Accumulator arrangement for the sunlight energy A solar energy accumulator arrangement including a plurality of optical systems for focusing the sunlight and a fluid passage in a transparent body which is disposed such that it passes through, or in the vicinity of, the optical systems, the fluid passag... | 01/08/1991 |
| 4949902 | Building heating system A building heating system includes a plurality of intake ducts located at various spaced apart locations in an attic as well as temperature sensors and a control circuit. The system has the intake duct located closest to the highest temperature air in the... | 08/21/1990 |
| 4790477 | Solar heating The invention relates to a space heating system comprising an air cooled solar collector, a heat store, air ducting, a forced draught mechanism valves, auxiliary heating means and a control system. According to the invention the auxiliary heating means in... | 12/13/1988 |
| 4766884 | Accumulator arrangement for the sunlight energy A solar energy accumulator arrangement including a plurality of optical systems for focusing the sunlight and a fluid passage in a transparent body which is disposed such that it passes through, or in the vicinity of, the optical systems, the fluid passag... | 08/30/1988 |
| 4745906 | Passive heat transfer device The invention relates to a device for passive heat transfer between a heat source and a condenser (6) by means of a vaporizable liquid and a cycle with two phases controlled by a float valve (2, 4, 11). This device comprises a boiler (1) heated by said so... | 05/24/1988 |
| 4703749 | Solar apparatus An improved solar apparatus for heating above 100° C. is disclosed. Said apparatus comprises a solar collector means for heating a heat transferring gas, ducting means extending from said solar collector means for permitting moving of said gas past a hea... | 11/03/1987 |
| 4674476 | Solar heating and cooling apparatus Solar heating and cooling system comprising an insulated fluid containing tank positioned with a portion thereof disposed above and below ground level. The system includes apparatus for transferring heat between the tank and the atmosphere, and to or from... | 06/23/1987 |
| 4541413 | Pump and control unit for a solar heating installation for a water tank, and particularly for a swimming pool The invention relates to a pump and control unit for a solar heating installation system for a water tank, particularly for a swimming pool. The system contains a solar collector, a hydraulic circuit which includes an outward-flow pipe, a return-flow pipe... | 09/17/1985 |
| 4535754 | Manufactured fuel assisted solar heat exchanger A heat exchange system operates on solar energy, supplemented by nonsolar manufactured fuels such as electricity, natural gas, propane and the like. The system includes a solar heat collector and a heat exchanger for delivering the collected solar heat to... | 08/20/1985 |
| 4531510 | Bidirectional thermal syphon valve, installation for the production and storage of heat or cold comprising such a thermal syphon valve, and various uses The invention relates to a bidirectional thermal siphon-valve operating by natural convection. It further relates to an installation for the production and storage of heat or cold comprising such a thermal siphon-valve, preferably with a continuously oper... | 07/30/1985 |
| 4505262 | Passive solar heated system A passive solar water heater includes a heat exchanger having concentric pipes for providing heat transfer by convective, counterflow action. The inner pipe includes reducer elements at each end. The reduced pipe extends through resilient annular grommets... | 03/19/1985 |
| 4498457 | Control for solar system A modular space-heating solar system has integral air-handling controls which automatically select a heating mode, a venting mode, or a variable combination of the two, according to room temperature. This eliminates the potential capability of the solar s... | 02/12/1985 |
| 4492219 | Valve and system incorporating same A temperature responsive valve having a primary inlet, secondary inlet and an outlet, in which the two inlets communicate with one another through a chamber within the valve body and communicate with the outlet through an orifice controlled by a valve mem... | 01/08/1985 |
| 4485803 | Solar receiver with interspersed panels A solar receiver comprising a plurality of vapor generating tube panels and a plurality of superheating tube panels interspersed with the vapor generating tube panels to maintain nearly a constant absorbed power ratio between the superheating and vapor ge... | 12/04/1984 |
| 4483320 | Solar powered fluid heating system A solar powered fluid heating system includes a thermal collector for vaporizing a refrigerant, a separator for removing any liquid component from the vapor component of the heated refrigerant, and a condenser for transferring heat from the refrigerant va... | 11/20/1984 |
| 4473063 | Solar heater Solar heater having a collector wherein heat transfer fluid is heated by solar radiation and a heat-dissipating conduit operatively connected to the collector so that fluid from a return line normally flows through the collector and the heat-dissipating c... | 09/25/1984 |
| 4471758 | House siding solar panel A house siding solar panel for the efficient conversion of solar radiation into usable heat energy, which includes an aesthetically pleasing housing having forwardly beveled side edges so that the panels may be mounted directly to the side of the house mu... | 09/18/1984 |
| 4455999 | Solar hot-water heaters A solar energy collection system including a collector having an absorber structure in the form of a closed chamber defined between an upper sheet comprised of a thin metal sheet or foil and an under layer. The under layer includes a plurality of supports... | 06/26/1984 |
| 4444177 | Apparatus for converting solar energy into heat The invention concerns an apparatus for converting solar energy into heat, comprising a solar collector made up of a plurality of collector elements which are attachable to the outside of a building or the like, are mutually couplable, and are capable of ... | 04/24/1984 |
| 4425903 | Chemical heat pump A chemical heat pump system is disclosed for use in heating and cooling structures such as residences or commercial buildings. The system is particularly adapted to utilizing solar energy, but also increases the efficiency of other forms of thermal energy... | 01/17/1984 |
| 4420947 | Heat pump air conditioning system A heat pump air conditioning system with an active digital control of the refrigeration cycle thereof to improve the coefficient of performance. The system can incorporate solar collectors in parallel with the outdoor heat exchanger and a water storage ta... | 12/20/1983 |
| 4412529 | Closed loop solar collector system with dual reservoirs and fluid bypass A closed loop solar collector system includes a linear concentrating parabolic reflector, a linear vaporizer tube horizontally aligned along the focal line of the parabolic reflector, and a fluid metering assembly attached to the input end of the vaporize... | 11/01/1983 |
| 4409961 | Solar water pump The intermittent generation of steam by a solar heat source provides a reciprocating column of water when the steam pressure acts on the top of a water column and the column in turn causes a diaphram in a chamber first to expand into an adjacent chamber w... | 10/18/1983 |
| 4397300 | Closed loop solar collector system with dual chamber fluid supply arrangement A closed loop solar collector system includes a linear concentrating parabolic reflector, a linear vaporizer tube horizontally aligned along the focal line of the parabolic reflector, and a fluid metering assembly attached to the input end of the vaporize... | 08/09/1983 |
| 4396004 | Venting means for solar collectors Venting means for solar collectors of the air flow type. An upper manifold has a gap formed by a top extending over and spaced above the upper end of the collector. An elongated inflatable tube is mounted in the gap, so that when the elastic tube is infla... | 08/02/1983 |