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WO/1999/009789A1 |
A water heater having a water tank and a electric resistance heating element (125) extending into the water tank for heating water in the tank. The water heater includes a proportional band temperature controller (100) for conducting ele...
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WO/1999/007185A1 |
The invention relates to an electric heater for a motor vehicle, in which the heat generated by power semiconductors is used as heat source. The heat emitted by the power semiconductors is used directly for heating. The power semiconduct...
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WO/1999/003385A2 |
In an RC oscillator having a controllable oscillation frequency a signal source (6) supplies a step signal to a series arrangement of a capacitor (2) and resistor (4), the oscillation frequency in operation being dependent upon the time ...
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WO/1998/058210A1 |
A cooking device wherein information on the cooking of an object to be heated, etc. is inputted to a terminal computer from a host computer and a control means provided in the terminal computer for controlling cooking based on the inputt...
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WO/1998/054931A1 |
A heating element (2) comprises a substantially planar substrate (4) having a heating track or tracks (8) and a thermal sensor (10), in the form of a track or discrete component, disposed on one side of the substrate (4). The thermal sen...
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WO/1998/050836A1 |
A thermal appliance, particularly an iron, comprises a heating plate (4), particularly a soleplate of the iron, which is heated by a single heating element (8). The temperatue of the soleplate (4) is measured by means of a plurality of t...
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WO/1998/036617A1 |
A thick film heater (2) comprises a thick film heating track (8) provided on an electrically insulating substrate (6). An electrical contact member (16) of silver or similar is bonded to a contact receiving pad (14) of the heater track (...
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WO/1998/036616A1 |
A heater assembly in or for a liquid heating apparatus comprises a thick film heater (200) and a control (2) for the heater (200). The heater (200) has a resistive heating track (204) having an electrical contact (206, 208) through which...
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WO/1998/030066A1 |
A liquid heating apparatus comprises a vessel (4) for receiving liquid to be heated and a thermally sensitive control (2) having a thermally sensitive actuator (14, 16) operable in the event that the vessel overheats to open a set of con...
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WO/1998/028944A1 |
It is therefore a particular object of the present invention to provide the means of reducing cooking related fire hazards without compromising usability of electric stoves. The present invention is designed to automatically shut down th...
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WO/1998/025114A1 |
Disclosed are an operating procedure related to a resistance heating element (10) and the device for applying same. In a first step, the resistance R�h? (11) of the heating element concerned (10) is determined at a given base temperatu...
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WO/1998/024269A1 |
Electrical resistance heating element, hot water heaters containing such elements, and method of preparing such elements are provided. The electrical resistance heating elements can be disposed through a wall of a tank for heating fluid,...
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WO/1998/020710A1 |
A safety-assuring control device for an electric blanket which includes a PTC heater includes an integrated circuit microcontroller unit having first and second safety circuit inputs and an output connected to a control input of an elect...
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WO/1998/017952A1 |
A heat transfer apparatus comprising at least one heat transfer means and at least one programmable controller. Said heat transfer means may be a 'hob'. Said programmable controller is adapted to receive at least one type of signal and m...
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WO/1998/012725A1 |
Disc-shaped planar electric heating elements (1) of the type comprising a stainless steel substrate carrying a resistive track or layer on one side thereof demonstrate a tendency to bow as their temperature changes and this can cause dif...
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WO/1998/012724A1 |
The invention concerns a radiant heating element for a cooking area, specially in a glass ceramic plate (4), having an insulated bottom with an annular border (3) in a pot (1). A heating element (6) is mounted in a free space (5) above t...
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WO/1998/006296A1 |
The invention concerns an electrical circuit (1) for an electric consumer, in particular for an electric hair-dryer, fan heater, or the like. The circuit (1) comprises two heating resistors (2, 6) which are disposed parallel with each ot...
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WO/1998/002895A1 |
An element protecter control is assembled with a planar electric heating element of a water heating vessel to protect the heating element against overheating by switching off the power supply thereto, the control being biased towards the...
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WO/1998/001798A1 |
The invention relates to a device for heating a seat, comprising a heating element (2) arranged in connection to the seat and connected to a control unit (1), which comprises current feeding organs (7; 16) for feeding a current (I) throu...
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WO/1997/048031A1 |
The temperature of a heating element (3), which heating element has a temperature dependent resistance, is measured by comparing the current through the heating element (3) with a user adjustable reference value. The AC voltage over a cu...
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WO/1997/039603A1 |
An electrical resistance or heater (2) comprising an electrical resistive track (8) provided on an insulating substrate (6). Two predetermined sections (10, 12) of the track (8) have a predetermined current carrying capacity and are brid...
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WO/1997/038557A1 |
Arrangements for the attachment of element overtemperature protection controls and appliance connector inlet parts to planar electric heating elements are described. The heating element has attachment studs integrally formed on its under...
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WO/1997/034209A1 |
A thermally insulated substrate, e.g. a system of pipes (11, 12, 13) surrounded by insulation (15), is maintained above a selected minimum temperature by means of one or more electrical heaters, preferably elongate self-regulating heater...
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WO/1997/017642A2 |
The diagnostic system (120) of the present invention monitors and accumulates the thermal signatures or characteristics during at least one operational mode of the cooking appliance (105). These thermal signatures or characteristics are ...
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WO/1997/016943A2 |
In a cooking system comprising a cooking field with a cooking surface which is permeable to electromagnetic fields (e.g. one made from "Ceran") and a cooking vessel placed on and externally heated by the cooking surface, the base of said...
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WO/1997/014003A2 |
An electrically powered water heater includes a plurality of heating elements for substantially instantaneous heating of fluid passing through the heater. A controller for powering the plurality of heating elements is responsive to a tem...
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WO/1997/007319A1 |
Thermal controls for electric kettles and the like commonly have a bimetallic switch-operating element (108) juxtaposed in heat transfer relationship with the heating element (222) of the kettle, and a heat sink compound in grease or pas...
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WO/1997/003539A1 |
A heater for containers of liquid or gel is described comprising a dome- or ring-shaped heating element (5" "). The ring-shaped heating element (5" ") can be either a donut-shaped heater that fits around the outer surface at the upper re...
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WO/1996/034510A2 |
An automatic shut-off and indication device for an electric heating appliance which comprises: means (2) for sensing usage of the appliance and for providing a usage-signal (US) indicating a non-usage of the appliance; means (10) for off...
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WO/1996/031739A1 |
The automatic temperature measurement based power control device, preferentially on the pot lid, allows for wire or wireless selective power control of one or more power sources through identification of the controlled power source, as w...
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WO/1996/021336A1 |
Polymeric heating elements (10) and water heaters containing these elements utilize heating elements (10) which include an electrically conductive resistance material (14) capable of heating fluid when energized. The elements (14) are he...
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WO/1996/020492A1 |
A device for connecting and disconnecting a current supply (1) to an electric circuit (2) dependent on the ambient temperature. In a housing, the device includes a current conducting element (4), a temperature sensing switch (5) and a he...
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WO/1996/017497A1 |
A thick film resistive heating element (1) comprises a thick film resistive track (3, 3A, 3B, 10A, 10B, 12) applied to the surface of an electrically insulative substrate (2). An encapsulating insulating layer is applied over the track t...
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WO/1996/013140A1 |
A high-frequency heating device which heats an object to be heated is provided with an electromagnetic wave radiating means which radiates electromagnetic waves, local heating means which heats an arbitrary part of the object to be heate...
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WO/1995/034187A1 |
A control for engagement with the external base of a liquid heating vessel comprises a carrier mounting two bimetallic actuators at opposite ends thereof. The actuators operate at the same temperature. Attached to the carrier is a mouldi...
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WO/1995/034188A1 |
A liquid heating vessel comprises an electrical heating element (6) secured externally to its base plate (4). A boiling control (28), a primary overheat protector (30) and a backup overheat protector are provided in a base compartment (1...
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WO/1995/031882A1 |
A compact immersion heater, for aquariums, includes: a watertight tubular container (2); an electric heating component (4); an adjustable thermostat (3); an electric circuit (6, 7, 8, 9) for connecting the heating component, arranged in ...
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WO/1995/030324A1 |
A control unit for controlling the temperature of a domestic water supply, comprising a temperature sensor (15) for inserting into a water tank (10) so as to produce a sensor signal representative of actual water temperature in a region ...
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WO/1995/029652A1 |
The invention relates to a thermal skin treatment device with a hand-held instrument fitted with a heating device to heat an externally accessible heating section and a cooling device for cooling an externally accessible cooling section....
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WO/1995/029572A1 |
The invention discloses an electrical cooking appliance including a plurality of electrical heating elements (12) having a known maximum total wattage and an electrical power distribution apparatus (20) receiving electrical power from an...
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WO/1995/024757A1 |
An electrical safety device (3) is disclosed which utilizes a sensor conductor (16) configured in a continuous loop and disposed in an electrical component (12) so as to sense overtemperature or mechanical damage over a length or wide ar...
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WO/1995/018516A1 |
An electrical heating apparatus, for example a fan heater, comprises at least an electrical heating element (12) and a motor (14) for driving a fan. The apparatus also comprises switch means (16) arranged to provide the apparatus with tw...
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WO/1995/011515A1 |
An electrically heated water boiling vessel has a planar heating element incorporated into the base of the vessel, the planar heating element comprising a stainless steel plate having a printed heating element formed on the underside the...
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WO/1995/011516A1 |
A planar heating element for an electrically-heated water boiling vessel comprises a stainless steel plate having a printed heating element formed on one side thereof, the printed heating element being sandwiched between electrically-ins...
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WO/1995/003680A1 |
A disposable, in-line heating cassette (20) and apparatus (10) for raising fluid temperature. The cassette (20) comprises a spacer (300) defining a serpentine flowpath (308) interposed between flexible foils (200, 400) and mounted on a f...
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WO/1994/022065A1 |
The invention relates to a method and apparatus for interrupting current supply to an electric load (L), such as an electric cooker. In the method the power supply (I) to the load (L) is interrupted by a switching means (1) controlled by...
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WO/1994/012004A1 |
An electric heating pad including a flexible thin film heating element (4) including two independent semiconductor circuits printed on an electrically insulating surfaces, laminated between overlying and underlying organic polyester shee...
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WO/1994/000077A1 |
A cylindrical shaped water heater (10) is provided for heating water to a temperature suitable for dental operations. The heater has an annular chamber (32) for combining water to be heated, the chamber being defined by an outer tube (26...
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WO/1993/020440A1 |
An automated, continuous and random access analytical system, havin apparatus and methodology capable of simultaneously performing multiple assays of liquid samples using different assay methodologies, and providing continuous and random...
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WO/1993/020670A1 |
A heating apparatus capable of raising the temperature of an object material to a target level speedily, and maintaining the temperature of the object material at a target level stably. The apparatus is provided with a high output heatin...
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