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| Number | Title | Issue Date |
| 4833894 | Ice maker with overtemperature protection An automatic ice maker for household refrigerator/freezers includes a mold in which water is frozen to form ice cubes which are then ejected from the mold into an ice bin. An electric heater is provided to heat the mold after the water is frozen to releas... | 05/30/1989 |
| 4834284 | Hot water control A system is described for use with a hot water supply for hotels, apartment buildings and similar multi-unit structures, which controls the temperature T1 of water at the outlet of a water tank to make it close to a desired temperature DTEMP th... | 05/30/1989 |
| 4832259 | Hot water heater controller A system is described for use with a hot water supply for hotels, apartment buildings and similar multi-unit structures, which controls the temperature T1 of water at the outlet of the water tank that circulates past the units and back to the t... | 05/23/1989 |
| 4790291 | Sediment agitating apparatus for water heater An agitating mechanism to aid in preventing the buildup of sediment in a gas fired water heater. The agitating mechanism includes a pump located outside of the tank and a first conduit connects the inlet of the pump to the interior of the tank, while a se... | 12/13/1988 |
| 4790289 | Sediment agitating apparatus for water heater An agitating mechanism to aid in preventing the buildup of sediment in a gas fired water heater. The agitating mechanism includes a pump located outside of the tank and a first conduit connects the inlet of the pump to the interior of the tank, while a se... | 12/13/1988 |
| 4765351 | Dual temperature water heater An improved dishwasher and hot water heater system is disclosed in which the dishwasher comprises means for automatically causing the water temperature in the hot water heater storage tank to be raised to a temperature suitable for sterilization of dishes... | 08/23/1988 |
| 4713526 | Reservoir filling arrangement for a coffee machine A control device for a valve (8) in the water supply conduit (7) of a reservoir (1), e.g. the water reservoir of a coffee machine, comprising a diaphragm (10) disposed in a reservoir wall and having an operating stud (11) for a tilting member (12, 40) swi... | 12/15/1987 |
| 4628184 | Foam insulated water heater and method of making same A water heater comprising a water tank having a component intended to be kept substantially free from contact with an expandable foam insulating material, and a method of making same, is provided. The water heater has a jacket surrounding the tank and pro... | 12/09/1986 |
| 4580034 | Wiring system for electrically operated devices comprising heating resistances In the disclosed heater device, a thermostatic control is connected in series with a heating resistance across two power junctions. An incandescent lamp and a glow lamp are connected in series between the junctions while the common point between the lamps... | 04/01/1986 |
| 4543445 | Thermostat cover An electrically insulative shield is disclosed for engaging and covering a device in an electrical circuit. The shield includes a generally planar portion having first, second and third edges. When the shield is engaged to the device, these edges correspo... | 09/24/1985 |
| 4543468 | Control system for water heater with external heat source A control system for an electric domestic water heater operatively associated with an external heat source, such as a heat pump, and including a water storage tank having an internal electric heater unit controlled by a tank thermostat responsive to the w... | 09/24/1985 |
| 4540874 | Control system for electric water heater with heat pump external heat source A control system for an electric water heater operatively associated with an external heat source, such as a heat pump. The water heater includes a water storage tank provided with an electric tank heating unit having a tank thermostat which closes in res... | 09/10/1985 |
| 4535931 | Energy conserving water heater control system Water temperature sensors in the form of thermisters are in physical thermal contact with the inlet and outlet pipes of a water heater and may be surrounded by insulating material to make them more insensitive to the ambient air temperature and more sensi... | 08/20/1985 |
| 4529032 | Method of and apparatus for recovery of waste energy A holding tank receives waste water from a dishwasher or laundry machine having a rinse cycle and at least one wash cycle. A pump moves the waste water through a heat exchanger at the same time that the rinse cycle requires hot water from a hot water heat... | 07/16/1985 |
| 4467178 | Control system for regulating water heater operation in accordance with anticipated demand A control system for selectively regulating the operation of water heating tank in accordance with anticipated hot water demand thus eliminating storage heat losses during periods when hot water is not required includes a remote control unit, a relay unit... | 08/21/1984 |
| 4371779 | Energy saving water heater control circuit An energy saving control circuit for a water heater having a hot water storage tank provided with an electrically operated heater, i.e., an electric heater or an electrically controlled combustion burner, includes a water flow detection device associated ... | 02/01/1983 |
| 4267432 | Installation circuitry for electric water heaters Electric installation circuitry that provides means for interconnecting with conventional storage-type electric water heaters of the sort energized from three-wire mains and controlled as to energy use thermostatically, the combination of hand switching a... | 05/12/1981 |
| 4166944 | Water heater control system A water heater control system is provided to lower the temperature to which hot water is heated during periods of low use, and raise the temperature back up during periods of peak demand. The unit described herein is adapted for use on a recirculating hot... | 09/04/1979 |
| 4165732 | Process and apparatus for obtaining hot water by use of solar energy A process and an apparatus for preparation of hot water, using solar energy is set forth. In the process, the water is made to circulate successively in two reservoirs connected in series, and the water is heated from solar energy in one reservoir while t... | 08/28/1979 |
| 4112281 | Combined water heater and sauna room heater device A jacket of rigid thermal insulation, containing a thermally reflective coating on its inner surface, is movably mounted on a hot water tank (gas-, electric-, oil-, etc- fired, of either standard or special design) mounted in a sauna room and selectively ... | 09/05/1978 |
| 3992607 | Electrically heated hot water system An electrically heated hot water system made of two superposed interconnected closed containers having a substantially elongated shape, a water inlet provided at the bottom of the lower container and a water outlet provided at the top of the upper contain... | 11/16/1976 |
