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| Number | Title | Issue Date |
| 7247219 | Rotary impulse sealer The invention is a rotatable cylindrical roll for heat sealing heat sealable materials that includes a heating zone for sealing the material and a cooling zone for supporting the newly formed seal. The device comprises a conductive zone and a resistive zone that are... | 07/24/2007 |
| 7223947 | Domestic appliance and heating structure for a domestic appliance An electric heating structure of a domestic appliance includes at least one first electric heating track (23) having a positive temperature coefficient and at least one additional electric heating track (27, 28). A control structure (22, 25, 29)... | 05/29/2007 |
| 7209336 | Double-protection circuit protector A circuit protector is connected in a circuit to protect the circuit from overloading. The circuit protector includes a casing inside which first and second terminals electrically connected to the circuit are fixed. A first cantilever member is fixed to the first te... | 04/24/2007 |
| 7119654 | Temperature sensor A temperature sensor for radiant heating units with a heating coil disposed in a cup includes a tube with a first end connected to a housing of a switch with a movable contact cooperating with stationery contacts in the housing. A two-section rod, which extends into... | 10/10/2006 |
| 7075035 | Hot wire control apparatus and method Control system and apparatus for controlling current input to an electrical resistance element such as a seal wire. The system and apparatus of the present invention is a closed loop feedback modification to conventional systems, and takes advantage of the inherent ... | 07/11/2006 |
| 7023674 | Overload protector for electrical motors An overload protection for electric motors, includes a one-piece suppression choke in which the connecting point to be broken is produced by means of at least one connecting point between the connection lug of the motor and a respective connecting element of the sup... | 04/04/2006 |
| 6992267 | Low-temperature steam electric iron with separately heated steam space A kind of low-temperature steam electric iron, includes ironing plate, temperature-adjusting plate and temperature adjustable circuit, steam room and its temperature auto-adjusting circuit. A heat insulation layer is positioned between the temperature-adjusting plat... | 01/31/2006 |
| 6822203 | Reactive hot wire control apparatus and method responsive to wire thermal expansion and contraction Control system and apparatus for controlling current input to an electrical resistance element such as a seal wire. The system and apparatus of the present invention is a closed loop feedback modification to conventional systems, and takes advantage of the inherent ... | 11/23/2004 |
| 6720538 | Thermostat variation compensating knob A heating appliance having an electrical circuit that controls the temperature output of the heating appliance is provided with a bimetallic element that opens upon reaching a temperature level. A potentiometer in the circuit is used to select the temperature level ... | 04/13/2004 |
| 6660976 | Device for controlling the service loads of an electric household appliance, in particular a refrigerator A control unit (3) for controlling an electric household appliance, e.g. a refrigerator, is connected in series with a positive temperature coefficient (PTC) resistive unit (4) which, when supplied with electric current, generates sufficient heat to activ... | 12/09/2003 |
| 6555796 | Heater having over temperature control A heater having a shut off device is provided which prevents false over temperature lockouts. The heater comprises a body having walls defining a volume for holding water, a heating element thermally coupled to the body for heating water within the body, ... | 04/29/2003 |
| 6472646 | Thermally sensitive controls A thermally sensitive, overheat protection control for a thick film electric heater comprises a bimetallic actuator (68) arranged for making good thermal contact with the heater, and a moveable electrical contact (78) for engagement with a contact provide... | 10/29/2002 |
| 6414285 | Thermal protector A thermal protector has a fixed plate provided with a fixed contact at the front end portion. There is a first terminal for external connection in the rear end portion and a movable plate having elasticity so that a movable contact provided in the front e... | 07/02/2002 |
| 6150641 | Temperature sensing and limiting device A temperature sensing and limiting device is described for use in a radiant electric heater (8) incorporating at least one heating element (14). The device comprises an elongate tubular housing (1) adapted to at least partly traverse the heater so as to b... | 11/21/2000 |
| 6002115 | Control device for electric heating apparatus A temperature controller for an electrically operated cooking appliance which performs as a thermostatic controller at high temperatures and as a simmerstat or time dependent temperature controller at simmering temperatures.... | 12/14/1999 |
| 5804798 | Thermal protector with bimetal plate A thermal protector having a fixed plate with a fixed contact point at one end, a movable plate having a movable contact point at a position corresponding to the fixed contact point. A bimetal plate which bends when a temperature exceeds a specified level... | 09/08/1998 |
| 5607610 | Compact protector A compact protector device having a housing 10 with a fixed electrode 18 and terminal member 12 and a movable electrode 26 and terminal member 14 contained therein. The movable electrode 26 includes a thermostatic bimetal member 26a with a movable contact... | 03/04/1997 |
| 5235159 | Control system, method of operating a heating apparatus and controlled heating apparatus A control system for regulating electrical power input to the resistive heating elements of an electric heating apparatus, including domestic cooking appliances, is provided which employs at least one piezoceramic relay device. The electrical power is app... | 08/10/1993 |
| 5233162 | Electric cigar lighter with a bimetallic snap-action disc for overload protection An electric lighter for a vehicle includes a lighter plug insertable into a dashboard socket having a bimetallic yoke engageable with an end of the plug for energizing the glow coil of the plug. An overload protective device is disposed in the socket and ... | 08/03/1993 |
| 5175792 | Low liquid level advance warning alarm system with safety shut-off An advance warning control system for controlling the liquid level in a heating tank including an electrical immersion heater to provide a source of radiant energy, a control means operably associated with the immersion heater and the control means includ... | 12/29/1992 |
| 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 |
| 4937430 | Utility steam generator with self-controlled pressure more particularly for little household electric appliances In a utility steam generator for small household electric appliances, steam pressure and filling water supply to the boiler is automatically controlled merely by a microswitch and a temperature controller, rather than by conventional devices such as press... | 06/26/1990 |
| 4892996 | Thermostatically controlled in-line diesel fuel heater using a bimetal disc thermostat A fuel heater adapted to mount in series with a diesel engine fuel line comprises a metal pipe having a resistance heater wound around a first straight portion of the pipe containing a fluid deflector dividing the first portion into a plurality of fluid p... | 01/09/1990 |
| 4889971 | Apparatus for regulation or limitation of temperature A device for temperature regulation has a contact housing which is provided ith a movable contact spring for breaking a circuit and on which a fastening flange is fastened. Furthermore, there is a tube of low thermal expansion, in which a bar with a high c... | 12/26/1989 |
| 4788415 | Dual bimetal power control switching arrangement for electronically controlled appliances A power control switching arrangement for controlling energization of a load in response to an external controller, in which a first semiconductor switch is connected in parallel with the series combination of a first normally open thermally actuated swit... | 11/29/1988 |
| 4752671 | Electric immersion heating elements and controls therefor An element protector unit for an electrically heated water boiling vessel comprises primary and secondary bimetals responsive to the element head temperature and each arranged for actuating a respective one of primary and secondary switching contacts conn... | 06/21/1988 |
| 4743727 | Turntable drive unit for a microwave oven A turntable drive unit of a microwave oven which comprises a spring box disposed below floor of the cooking chamber in the microwave oven, the spring box containing a shape memory alloy plate spring disposed therein, an axle mounted to the spring box thro... | 05/10/1988 |
| 4723067 | Electric hotplate An electric hotplate (1) with a temperature sensor (21) of a power control device provided in the center of the cooking surface (3) has on the underside of area (5) of hotplate body (2) directly heated by heating resistors (7, 8) a thermal cutout (27) wit... | 02/02/1988 |
| 4697068 | Electric cooker heating unit A heating unit for cooking points, baking oven muffles or the like is provided on the inside of its outer body (2), in the central zone (10), with two thermal cutouts (17, 18), which are preferably located in a common cutout casing (19) exclusively locate... | 09/29/1987 |
| 4667074 | Temperature display for an induction heating apparatus An induction heating apparatus is formed by connecting a plate or a rod made of good heat-transferring metal to the lower surface of an insulating plate, connecting a spring or a bimetal having shape-memorizing function to one end of the metallic plate or... | 05/19/1987 |
| 4665307 | Thermal cut-out device for radiant heaters A thermal cut-out device for a radiant heater includes a probe-type thermally responsive assembly (2), at least a part of which is coated with and/or is surrounded by a radiation reflective material. The probe-type assembly may include a first element (3)... | 05/12/1987 |
| 4636615 | Electrical resistance heating element having a bimetallic protective switch An electrical radiator, particularly for fan-forced heaters, is provided which includes a resistance heating element disposed on an insulating element connected to the housing of the fan-forced heater. The coil winding of the resistance heating element is... | 01/13/1987 |
| 4633238 | Temperature limiter for a glass-ceramic cooking unit A temperature sensor for a temperature limiter is made up of an outer tube and a number of inner component rods. The temperature sensor extends transversely over the top side of a moulding of a heating system for a glass-ceramic cooking unit. The heating ... | 12/30/1986 |
| 4631390 | Thermal limiter A thermal limiting device for controlling one or more sources of infra-red radiation, preferably tungsten-halogen lamps, mounted in heating apparatus, consists of a metallic wire arranged to de-energize the sources when it is subjected to a predetermined ... | 12/23/1986 |
| 4621186 | Thermally-sensitive control arrangement for containers provided with electric immersion heaters A thermally-sensitive electrical control is mounted to the head of an electric immersion heater of an electric kettle or like container. The control has an outer periphery of less radial extent than the head so as to be passable, during assembly, through ... | 11/04/1986 |
| 4577176 | Temperature regulating device A temperature regulating device is provided for electrical cooking appliances wherein the heat is provided by heating bodies, or elements, for plural heating zones. The device has a heat resistant bar or rod of high thermal expansion. The rod is enclosed ... | 03/18/1986 |
| 4574185 | Temperature control circuitry for a cooking apparatus The deep fryer comprises an oil tank, an immersed heater (3) controlled by a thermostat (2) which disconnects the heater when the oil reaches a given temperature. The thermostat comprises an auxiliary switch (a) which controls a signal light (a-1) or some... | 03/04/1986 |
| 4555688 | Thermostat for cooking utensil A thermostat for a cooking utensil having a radiation heating body is constructed of an electrical switch actuated by a push rod. The rod extends away from the switch and expands in response to increasing temperature. The rod is held by spring loading wit... | 11/26/1985 |
| 4554438 | Electric cooker with thermostats for protecting against localized overheating The cooker contains several conventional hotplates in a mounting plate. A thermostat is associated with each hotplate. However, the thermostat is not placed in or on the hotplate, but is instead located on the cooker, particularly between the hotplate and... | 11/19/1985 |
| 4544831 | Hot warning device for cooking apparatus In a cooking and heating apparatus, a device for warning personnel of dangerously hot temperature is incorporated within the structure of a thermostat which has a switch for regulating the flow of electric current to a heating element of the apparatus. Th... | 10/01/1985 |
