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| Number | Title | Issue Date |
| 7315692 | Electrical water heater The present invention discloses an electrical water heater including a container body which is adapted to contain a predetermined volume of water, a heating unit mounted to the heater body for heating the water, and a temperature control unit for operating the heati... | 01/01/2008 |
| 7242858 | External reset device for an electric water heater An external reset device that is operable in combination with an electric water heater is disclosed. The external reset device is attached to an element cover that is mounted to the water heater and conceals the water heater's control device, such as a manual reset ... | 07/10/2007 |
| 7162150 | Thermistor sensor probe with bimetal high limit control for electric water heater control A bracket operable to support a temperature control device and a sensor probe at an external surface of a water tank for controlling and monitoring the water temperature of the tank. The bracket comprises a first receptacle, a second receptacle, and a coupling featu... | 01/09/2007 |
| 6996336 | Economical heated grease storage tank A used cooking oil and grease storage tank is comprised of a plastic material such as, polyethylene. Advantageously, a metal heating element or member is secured to a top cover member of the tank and extends downward into the used cooking all and grease stored with ... | 02/07/2006 |
| 6957014 | Liquid heater A liquid heater comprising a plurality of storage compartments for containing liquid to be heated. The storage compartments being connected together in series and comprising at least a first end compartment for receiving liquid to be heated and a second end compartm... | 10/18/2005 |
| 6951478 | Method and apparatus for three-phase to single-phase power distribution In a piece of equipment deriving power from a three-phase power supply, a method and a connector provide a country-independent arrangement of connection pins to interface with the equipment, so as to provide one or more single-phase output voltages at designated pin... | 10/04/2005 |
| 6917756 | Water heater electrical enclosure insert/foam dam Electrical components projecting outwardly from the storage tank portion of an electric water heater are shielded from foam insulation material being injected into an insulation space between the tank and an outer jacket portion of the water heater by a hollow, open... | 07/12/2005 |
| 6915069 | Temperature sensor assembly, water heater including the temperature sensor assembly, and method of sensing a temperature A temperature sensor assembly and method for use in a water heater. The temperature sensor assembly includes a sensor disposed within a non-planar base that at least partially defines a volume, a collector coupled to the base, and a reflector coupled to the base suc... | 07/05/2005 |
| 6710310 | Heating element with integrated heat safety device The invention relates to armoured heating elements. The invention specifically relates to a heating device (1) consisting of a tubular envelope, wherein a heating element (4) surrounded by insulation (3) is arranged, said heating element (4 | 03/23/2004 |
| 6707988 | Universal drain plug heater for livestock water tanks An electric water heater for use with a livestock water tank includes a heating element, a housing including a drain plug fitting, and a power cord. The power cord is interconnected with the heating element through a temperature control device, e.g. a thermostat, fo... | 03/16/2004 |
| 6477323 | System and method for continuously reprocessing waste sulfuric acid liquid, and heater supporting structure for heating a vessel made of glass A heating vessel for concentration is formed in an elongated one, and a baffle plate is arranged to increase sulfuric acid liquid concentration at an outlet to a high level. The heating vessel for concentration and a heating vessel for distillation are in... | 11/05/2002 |
| 6371057 | Adjustable mount for a gas control valve of a water heater A fitting for connecting a gas control valve to a water storage tank of a gas water heater comprising a base member having an elongated opening sized and shaped to receive a mating locator attached to the tank, which permits connection of the valve and ta... | 04/16/2002 |
| 6353708 | Apparatus for mounting an electrical heater through a water tank drain plug opening An electric water tank heater is installable through the drain plug opening of a water tank. The heater includes a power cord interconnected with a heating element through a temperature control device for delivering electrical power to the heating element... | 03/05/2002 |
| 6317559 | Apparatus for sealing the end portion of a hot-water tube in which electric heating wires are inserted An apparatus for sealing an end portion of a hot-water tube in which electric heating wires are inserted enables electric heating wires in hot-water tubes to extend through to the outside, while preventing leakage of water from the hot-water tubes. A plug... | 11/13/2001 |
| 6289177 | Encapsulated heating element fluid heater A new encapsulated heating element fluid heater for heating a fluid such as water. The inventive device includes a vessel and an end cap. The end cap has a plurality of bores therethrough extending between the first and second ends of the end cap. A plura... | 09/11/2001 |
| 6256456 | Hot water dispenser with heat dissipation plates for dry-start protection The present invention presents a heat dissipating system for protecting a hot water tank dispenser from damage during a dry operation. The dispenser includes a hot water tank with a plastic wall. The hot water tank contains a heating element extending thr... | 07/03/2001 |
| 6240249 | Electric water heater with simplified phase conversion apparatus An electric water heater is provided with simplified phase conversion apparatus including a terminal structure having replaceable line lug portions which are wired to a single phase row of multi-pin connector sockets by single phase routing circuitry, and... | 05/29/2001 |
| 6210208 | Quick connect terminal and terminal block A screwplug type water heating unit (10) has a body (12) through which ends (14a, 14b) of a heating element (14) extend. Separate terminal quick connects (22) have tabs (38a, 38b) which engage the ends of the heating element. Electrical leads (L1, L2) whi... | 04/03/2001 |
| 6151448 | Electric heater for a livestock water tank An electric water tank heater is installable through the drain plug opening of a water tank. The heater includes a power cord interconnected with a heating element through a temperature control device for delivering electrical power to the heating element... | 11/21/2000 |
| 6137955 | Electric water heater with improved heating element A water heater heating element including a base member adapted to extend through and sealingly engage a wall of a water heater tank, the base member having a recess; a thermistor positioned in the recess; members connected to the thermistor and extending ... | 10/24/2000 |
| 6123050 | Sanitary stainless steel heating system A sanitary fluid heater includes a corrosion resistant stainless steel housing, a stainless steel cap securely positioned over an open end of the housing, and a heating element disposed within the housing. The cap defines an internal cavity which includes... | 09/26/2000 |
| 6069998 | Integral water heater and water temperature sensor A screwplug type water heater (10) has a heating element (12) immersible in a water heater tank (T) to heat water (L). Electrical terminals (28) on the outer end of the heater connect the heating element into a heater circuit (H) for a control unit (14). ... | 05/30/2000 |
| 6009238 | Water distiller with improved automatic shutoff feature Disclosed is a water distiller of the type having a raw water container, a heater for boiling water in the container and a thermostat for disabling the heater. In the improvement, the container includes a water cavity having a upper perimeter around a pan... | 12/28/1999 |
| 5968388 | Steam cooking appliance with a corrugated heat transfer membrane and thermally conductive filler A compressible and thermally conductive heat transfer membrane is placed between heating blocks and the bottom of a reservoir in a steam oven. This heat transfer membrane assists in distributing the heat from the heating block to the reservoir while servi... | 10/19/1999 |
| 5949960 | Electric water heater with dry fire protection system incorporated therein Multiple resistance type electric heating elements projecting into the interior of the storage tank portion of an electric water heater are protected against dry firing damage by using a water soluble member, representatively a sugar cube, positioned in t... | 09/07/1999 |
| 5946448 | Methods of assembling immersion heaters with heating elements in the form of printed circuit tracks An immersion heater has a support plate on which there is provided an electrical heating element in the form of a printed circuit conductive track. The element is provided with a portion which allows it to be clamped in direct relation to a control unit i... | 08/31/1999 |
| 5809056 | Vitrification furnace with a gas light seal A Deglor furnace includes heating elements each having a heater rod being surrounded by a protective tube. The protective tube is mounted on a ceiling of the Deglor furnace and is run through an opening in the ceiling into the interior of the Deglor furna... | 09/15/1998 |
| 5404421 | Fuel heating element mounting plug housing a thermostat A combined heating element and thermostat for use in a water heater. An electrical heating element includes a U-shaped rod having first and second legs, the first leg being longer than the second. A plug fits in a sidewall of the heater. The rod is instal... | 04/04/1995 |
| 5388178 | Safety control system of a boiling clothes washing machine A safety control system for a boiling clothes washing machine has paired wash water temperature detecting devices and heater temperature detecting devices, for accurately detecting and controlling the temperature of the wash water, and for preventing the ... | 02/07/1995 |
| 5379365 | Replaceable adaptor for a hot water tank resistive heating element An adaptor assembly for securing a resistive electric heating element to a hot water heating tank. The adaptor assembly comprises a hollow hub sealingly securable with a hole in a hot water tank outer wall with a connecting portion of the hub extending ou... | 01/03/1995 |
| 5371831 | Electrical heating element assembly for water heater A port assembly for a non-metallic pressure vessel is joined to a boss which is molded into or otherwise joined to the vessel wall. A bayonet type accessory mount is insertable therein for sealing passage through the vessel wall. The mount includes a simp... | 12/06/1994 |
| 5335311 | Modular galvanic current control resistor assembly for mounting on an electric immersion heater A modular galvanic current control resistor assembly for application to a metallic sheathed heating element of a domestic water heating tank to prevent heating element corrosion includes a circular metallic disc adapted to fit over the sheath ends of a U-... | 08/02/1994 |
| 5305419 | Hot water tank construction, electrically operated heating element construction therefor and methods of making the same A hot water tank construction, an electrically operated heating element construction therefor and methods of making the same are provided, the electrically operated heating element construction comprising a heating element and an externally threaded fitti... | 04/19/1994 |
| 5293446 | Two stage thermostatically controlled electric water heating tank A two-stage electric water heater which utilizes a centrally located, vertically-oriented flue pipe and multiple heating elements extending through selected lengths of copper tubing positioned in the flue pipe to heat the water surrounding the flue pipe. ... | 03/08/1994 |
| 5159659 | Hot water tank construction, electrically operated heating element construction therefor and methods of making the same A hot water tank construction, an electrically operated heating element construction therefor and methods of making the same are provided, the electrically operated heating element construction comprising a heating element and an externally threaded fitti... | 10/27/1992 |
| 5117089 | Structural support for hermetic terminal assembly heater apparatus A heating apparatus for heating a fluid medium confined in a hermetically sealed housing chamber including a terminal assembly having a body member sealed in the housing chamber wall with pins extending in sealed relation therethrough to provide electrica... | 05/26/1992 |
| 5113480 | Fluid heater utilizing dual heating elements interconnected with conductive jumper A dual element comprises two electrical heating elements of different ratings. Each heating element has first and second terminals. The second terminals of the two heating elements are secured to a common clip, which is wired into an appropriate electrica... | 05/12/1992 |
| 5109474 | Immersion heating element with conductive polymeric fitting A hot water tank construction, an electrically operated heating element construction therefor and methods of making the same are provided, the electrically operated heating element construction comprising a heating element and an externally threaded fitti... | 04/28/1992 |
| 5058197 | Heater apparatus for fluid medium in a hermetically sealed chamber A heating apparatus for heating a fluid medium confined in a hermetically sealed housing chamber including a terminal assembly having a body member sealed in the housing chamber wall with pin means extending in sealed relation therethrough to provide elec... | 10/15/1991 |
| 5020128 | Tubular sheathed electric heater with an overheat safety device A tubular electric resistance heater includes a tubular sheath enclosing an electric heater coil. As protective overheat safety device is provided at an end of the sheath and includes an electrically conductive tube disposed in a cavity in the end of the ... | 05/28/1991 |
