Did You Know...
...that Charles Goodyear performed some of his experiments on rubber while in debtor's prison? He was there so often he referred to it as his "hotel". Chronically in debt because of poor business sense and ill health, Goodyear depended on the generosity of friends and family. Even after he unlocked the secret to vulcanizing rubber, he was unable to improve his financial situation. When he died, his estate was $200,000 in debt.
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| Number | Title | Issue Date |
| 7261145 | Snow melting panel A snow melting panel has a piping arrangement that includes straight pipe lines and U-shaped bend sections is provided. The panel can be sized such that the parallel length of the straight pipe lines is 300 to 5000 mm, and the perpendicular span of the straight pipe... | 08/28/2007 |
| 7222801 | Floor buried system for heat distribution This invention concerns a floor buried system for heat distribution comprising heating means of a heating fluid, a pump, at least a rack (12) to which are coupled at least a supply pipe (13), at least a return pipe (18) and connection means char... | 05/29/2007 |
| 7114524 | Fluid flow in tubing There is disclosed a method for configuring or reconfiguring branches in tubing in which the axes of at least two components of the branched structure are arranged askew. ... | 10/03/2006 |
| 6739517 | Non-circulating tank and kit for use with liquid heating unit A tank for use with a liquid heating vessel of a hydronic radiant heating system to assist in the simultaneous sealing and venting of air from the system where the heating vessel has a flue for release of exhaust, the tank including a liquid holder that is exposed t... | 05/25/2004 |
| 6463999 | Multiloop temperature control system A multiloop temperature-control system has a hydraulic bus connected to a plurality of loops for the temperature-control medium and respective hydraulic modules connected to the hydraulic bus, and through the hydraulic bus, to these loops. Plug connectors... | 10/15/2002 |
| 6276872 | Low temperature heat-assisted evaporation impoundment The assisting in the evaporation of water from a surface impoundment or other impoundment that utilizes a closed heat pipe system that is partially submerged within the material of the surface impoundment. Water, or other heat transfer fluid, is circulate... | 08/21/2001 |
| 6035932 | Process and apparatus for heating a gas delivered to a membrane gas separator A process and apparatus for heating gas in which a flow rate D0 of a warm fluid is caused in an input line, connected at its upstream portion to a source of warm fluid and at its downstream portion to the inlet of one of the passages of a heat exchanger; ... | 03/14/2000 |
| 5979781 | Hydronic heating with satellite distribution stations for multi-temperature supply water to heating loops A hydronic heating system having a source of hot supply water and a reservoir of cooler return water, a supply water line from the source, a return water line to the reservoir and a multitude of heating loops through which water flows to deliver heat, inc... | 11/09/1999 |
| 5887786 | Passive injection system used to establish a secondary system temperature from a primary system at a different temperature A passive injection system for a hydronic heating system having a primary loop and a secondary loop is described. The passive injection system establishes a secondary temperature in the secondary loop significantly different from the temperature of the pr... | 03/30/1999 |
| 5284204 | Hydronic thermal distribution system for space heating and cooling The apparatus of the present invention comprises a hydronic distribution system using prefabricated, flexible cable containing plastic tubing to provide liquid supply and return conduits for the hydronic system. The plastic conduits are enclosed in a foam... | 02/08/1994 |
| 5183029 | Hot water supply system In a domestic hot water supply system including at least one user terminal such as a shower head to which blended hot and cold water are supplied at a selected temperature, the cold water of the blend is supplied via a check valve which responds to change... | 02/02/1993 |
| 5119988 | Hydronic heating water temperature control system A three-way modulated diverting valve is provided in the return line to the boiler of a hydronic heating system between the heating loop return and the boiler return, the valve having its input from the heating loop return, one output to the boiler return... | 06/09/1992 |
| 5007583 | Device for accomodating expansion in fluid circulation systems Device for expansion transfer in liquid cycle systems, in particular for heating installations, comprising a heating boiler (1), a liquid line (2, 2'), radiators (3) and an expansion vessel (4) at atmospheric pressure. The expansion vessel (4) is connecte... | 04/16/1991 |
| 4921166 | Hot water circulating system A hot water circulating system capable of decreasing energy loss, increasing the amount of hot water to be circulated per unit time and reducing time required for each circulating cycle. The system includes a valve opened at the start of emptying of water... | 05/01/1990 |
| 4813396 | Methods and apparatus for changing liquid temperature Water heating methods and apparatus feed a combustible mixture of gas and air to an axial inlet of a cylindrical radiant surface burner and conduct water to be heated through a heat exchanger encompassing that cylindrical radiant surface burner as a cylin... | 03/21/1989 |
| 4791887 | Boiler with rotatable heat exchanger A boiler has a gas burner assembly and a heat exchanger positioned in a combustion chamber for heating water circulated through the heat exchanger by heat exchange with the combustion products. The performance of the heat exchanger is improved by rotating... | 12/20/1988 |
| 4671252 | Bubble formation and circulation system Conduits jointly define a fluid and vapor occupied annular chamber which when the conduits are heated emits bubbles which propel a quantity of fluid along a conduit. A fluid imbalanced condition in fluid heads is achieved by the bubble propulsion of fluid... | 06/09/1987 |
| 4601426 | Excess-pressure-free boiler and accumulator heating system The heating system includes water-radiators, a heat source as a boiler and/or one or more water-accumulators, an expansion vessel and a pipe-circulation system interconnecting the radiators and the source through which the water is pumped. The system is i... | 07/22/1986 |
| 4588124 | Heat-exchanging system for an enclosed space A heat-exchanging system for an enclosed space having wall-forming members, pipes provided on said members, and being adapted for discharging water for flow along the surfaces of the same, a source of water, a pump connecting said source and said pipes, d... | 05/13/1986 |
| 4498623 | Hot water heating system A hot water heating system is disclosed in which the convectors or radiators are provided with thermostatic valves capable of shutting off the supply water to all radiators. In order to prevent damage to the pump some circulation is permitted at all times... | 02/12/1985 |
| 4480785 | Method and apparatus for the regulated transfer of heat from a primary steam network to a heat consumer In a method for the regulated transfer of heat from a primary steam network to a heat consumer, the supply flow of which is at a predetermined overpressure and the return flow of which is at a relatively lower pressure, the steam withdrawn from the steam ... | 11/06/1984 |
| 4479484 | Pulsing combustion A pulsing combustion device is disclosed including a combustion chamber with a poppet valve mounted for reciprocation in the combustion chamber. A pressurized combustible mixture is supplied to the poppet valve with the combustion gases ignited in the com... | 10/30/1984 |
| 4477021 | Method and apparatus for a regulated heat transfer from a primary steam network to a heat consumer In a method for the regulated transfer of heat from a primary steam network (010), the flow (04) of the heat consumer (2) is supplied at a predetermined excess pressure, while the return flow (02) is at a relatively lower pressure. In order to be able to ... | 10/16/1984 |
| 4432339 | Solid fuel burning heating system A wood burning heating system comprises a large hot water storage tank and a furnace or boiler with a water jacket and a vaulted ceiling over a firebox with a refractory bottom and a refractory lining partially up the side walls of the firebox. The volume... | 02/21/1984 |
| 4420677 | Heating system A heating system comprising a closed conduit containing a liquid which is continuously circulated through the conduit by a pump. An electrical resistance heating unit serves to heat the liquid in the conduit and heat is transferred from the liquid through... | 12/13/1983 |
| 4401100 | Water heating system A water heating system comprises a lower energy storage tank connected with a source of energy and an upper tank mounted on top of the lower. The upper tank may be a conventional water heater or a water storage tank connected at an outlet therefrom with a... | 08/30/1983 |
| 4397418 | Control unit for central heating systems The invention relates to a control unit comprising two bodies, one of which is located in a main fluid-distributing section, such as a hot water heating system. A shunt valve in this main section body provides for shunting the hot water, of a boiler in th... | 08/09/1983 |
| 4366853 | Process and devices for causing a heat carrier fluid to circulate in a closed circuit comprising a hot source and a cold source The present invention relates to a heat pump for the circulation of a heat carrier fluid in a closed circuit in order to transfer calories from a hot source towards a cold source. This pump comprises two closed tanks which communicate, one with the hot so... | 01/04/1983 |
| 4360003 | Wood burning hot water heater A heating device for supplying hot water to home heating systems and hot water faucet outlets in the home includes a combustion chamber which is adapted to burn wood fuel for supplying the necessary heat. The heating device comprises a base member contain... | 11/23/1982 |
| 4296883 | Heat generation and distribution system A heat distribution system is disclosed for transferring heat, such as is generated by a burner device of conventional construction, to a remote location, with circulation away from the burner in a horizontal or downward direction. The distribution system... | 10/27/1981 |
| 4277020 | Fluid friction heater A fluid friction heater is disclosed. The heater includes a housing having a cylindrical inner surface. At least nearly circumferential, closely spaced grooves are formed in the inner surface of the housing, the depth of the grooves being small relative t... | 07/07/1981 |
| 4175698 | Method and apparatus for conservation of energy in a hot water heating system A very well heat insulated water storage or accumulator tank of relatively large capacity as compared to the capacity of the hot water heating unit is interposed between the unit and the radiator system and is interconnected with the unit. Heated water fr... | 11/27/1979 |
| 4155506 | Method and apparatus for conservation of energy in a hot water heating system A very well heat insulated water storage or accumulator tank of relatively large capacity as compared to the capacity of the hot water heating unit is interposed between the unit and the radiator system and is interconnected with the unit. Heated water fr... | 05/22/1979 |
| 4116379 | Heating apparatus A domestic heating system that utilizes heat collectors such as solar collectors or fireplace heat collectors, and effectively transfers the heat from these collectors for storage or useage without additional energy input. Thermal pump apparatus is utlize... | 09/26/1978 |
| 4052587 | HTW heating system having an electrode steam boiler as the direct source of HTW A high temperature water (HTW) space heating system in which the direct source of HTW is an automatic electrode steam boiler having electrodes, adapted to be connected in an electrical distribution system. The electrodes are positioned in corresponding st... | 10/04/1977 |
| 4011989 | Metal building with integrated hot water heating system A metal building with an integrated hot water heating system includes a heater for heating water, pipes connected between the heater and heating grids in the floor of the building and the structural columns and beams of the frame of the building for circu... | 03/15/1977 |
| 3999709 | Water heater Apparatus and method for providing heat to a hot water storage system in which water from the storage system is circulated through a heat exchanger in the flue of a combustion heat source and circulatory flow is provided by a circulating pump in a seconda... | 12/28/1976 |
| 3986666 | Distributor for hot water heating systems This invention relates to a water distributor for fluid water heating/cooling systems, having a pair of large conduits arranged side-by-side in spaced relation to each other with smaller dispersion conduits extending laterally from each large conduit and ... | 10/19/1976 |
