Mark Twain (Samuel L. Clemens) received Patent No. 121,992 for "An Improvement in Adjustable and Detachable Straps for Garments." He later received two more patents: one for a self-pasting scrapbook and one for a game to help players remember important historical dates.
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| Number | Title | Issue Date |
| 7453052 | Electrical distribution apparatus with controlled cooling An electrical distribution apparatus configured to connect a load to a power source is disclosed. The apparatus includes a housing having an air inlet and an air outlet, a distribution conduction path, a thermal sensor in thermal communication with the conduction pa... | 11/18/2008 |
| 7342205 | Apparatus and method for controlling an electric heating assembly In apparatus and a method for providing electronic control of an electric heating assembly, a radiant electric heater (10, 110) is arranged at a lower surface (22, 124) of a glass-ceramic cooking plate (12, 112), the plate having an upper surfac... | 03/11/2008 |
| 7326885 | Hot plate with stainless steel top A hotplate with a stainless steel top plate to support a vessel. The stainless steel top plate has an upper surface with a substantially centrally located depression having a depth and area generally sufficient to absorb upward crowning of the top plate when heated.... | 02/05/2008 |
| 7193192 | Temperature-responsive device A temperature-responsive device (14) is provided for an electric heater (2). The heater (2) is located behind a heatable surface and comprises a dish-like support (6) having therein at least one electric heating element (12) having... | 03/20/2007 |
| 7183522 | Corrugated electric heating element and related radiant hotplate An electric radiant hotplate includes a base of electrically insulating material and a peripheral crown extending along the outer rim of the base and projecting upwards. A strip of resistive material is inserted in the base and is formed by a sequence of planar leng... | 02/27/2007 |
| 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 |
| 7053340 | Heating device with two areas A radiant heater is provided, which is subdivided into three concentric areas and which can be mounted under a glass ceramic cooking area. It has a rod controller and the two innermost heating areas are jointly protected against excess temperatures by means of the r... | 05/30/2006 |
| 7041942 | Heating plate assembly for a cooking appliance A heating assembly is provided for heating objects, for example, food items, that comprises a substrate attached to an insulating frame, which may optionally be attached to a metal pan. The complete assembly is attached to a cooking appliance. The substrate may take... | 05/09/2006 |
| 6995344 | Cooking appliance The appliance has a cooking plate (10) and a radiant electric heater (2) having multiple heating zones (12, 14, 16) arranged substantially side-by-side. A temperature sensing assembly (34) incorporates an electrical component (42) ... | 02/07/2006 |
| 6924465 | Display device with illuminating device for a domestic electric heating apparatus The invention provides according to one example a display device for a domestic electric heating appliance, such as for example a glass ceramic hob, the electric heating appliance having at least one heating device. The latter is subdivided into several flat heating... | 08/02/2005 |
| 6919538 | Method for thermally treating substrates To increase the temperature homogeneity on the surface of a substrate that is to be thermally treated, a method for thermally treating substrates is provided, according to which the substrate is heated by several separately controllable heating elements. A desired-v... | 07/19/2005 |
| 6765179 | Electric radiant element with an active sensor for cooking vessel detection An electric radiant heater (11, 111) is provided having an active sensor (21, 121) for detecting the position of a cooking vessel on a glass ceramic plate over the radiant heater (11, 111). The sensor (21, 121) is mad from electrically co... | 07/20/2004 |
| 6603100 | Radiant electric heater A radiant electric heater (2) comprises a dish-like support (6) having a base layer (8) of thermal insulation material. At least one heating element (10) is supported relative to the base layer. A temperature-responsive device (16) has a rod-like componen... | 08/05/2003 |
| 6300604 | Radiant electric heater A radiant electric heater comprises a base (2) of thermal and electrical insulation material, an electrical heating element (3) supported on or adjacent to the base and having a terminal region (7) at a location in the heater remote from a periphery of th... | 10/09/2001 |
| 6300605 | Radiant electric heater A radiant electric heater comprises a base (3) of thermal insulation material having supported thereon or adjacent thereto at least two concentrically-arranged heating elements (7, 9) separated by a dividing wall (5) of thermal insulation material to form... | 10/09/2001 |
| 6229119 | Fitting a casing of a switching device A casing (11) of a thermostat (12), which is to be fixed to the rim (17) of a reception container (16) for a heating device, is substantially inserted in a recess (23) of the rim (17). The recess (23) is open to the outer edge of the rim (17) and has two ... | 05/08/2001 |
| 6051816 | Radiant electric heater A radiant electric heater includes a base (2) of thermal and electrical insulation material and at least one electrical heating element (4) supported on a surface (3) of the base. A rod-like temperature-responsive device (10) extends across the heater fro... | 04/18/2000 |
| 6018148 | Radiant electric heater A radiant electric heater includes a base (2) of thermal and electrical insulation material having a surface supporting at least one heating element (3) in the form of an elongate electrically conductive ribbon (4). The ribbon (4) is supported on edge and... | 01/25/2000 |
| 5961867 | Method and apparatus for controlling an electric heater An electric heater (1) arranged beneath a glass-ceramic cook top (2) is controlled with the aid of a temperature sensor (7) for monitoring temperature at or adjacent to the glass-ceramic cook top. The sensor provides an electrical output as a function of ... | 10/05/1999 |
| 5900175 | Radiant cooking unit A radiant cooking unit comprises a heat insulating material forming a heating element carrier to which electrical heating elements are secured. It is surrounded by a ring-shaped bordering element of a heat insulating material relatively rigid in design. B... | 05/04/1999 |
| 5837975 | Corrugated strip, radiant heater element Radiant heating apparatus (10) for use on a stove (1). The heating apparatus is mounted beneath a glasstop type cooking surface (2) for radiating heat at the surface to heat the surface for cooking food. A pan (14) is installed adjacent an underside (2u) ... | 11/17/1998 |
| 5796075 | Heater, particularly for kitchen appliances At least one radiant heating resistor (10) formed from a corrugated flat material band has in different orientations projections (28) projecting from a corrugated longitudinal edge (14), which on the one hand for retaining purposes engage in an insulation... | 08/18/1998 |
| 5489764 | Radiant heating cook-top with biased temperature sensor In a radiant heating unit the temperature sensor (30) of a temperature limiter (29) extends over only part of the diameter of the heating field (17) in which the radiation heaters (13) are located. The temperature sensor is so constructed and/or mounted, ... | 02/06/1996 |
| 5420398 | Temperature detection device A device (1f), which is e.g. provided as an overheating protection means for detecting the temperature on a heating device (4f), apart from a temperature sensor (3f), also has an insulating connecting piece (20f) with all the connecting elements (23f) nec... | 05/30/1995 |
| 5310993 | Device for controlling or limiting temperature in an electric cooking appliance A device for controlling or limiting temperature in an electric cooking appliance includes a switch and a temperature sensor operatively coupled to the switch. The temperature sensor takes the form of a rod arranged substantially coaxially within a tube. ... | 05/10/1994 |
| 5270519 | Radiant heater having multiple heating zones In a radiant heater having multiple heating zones there is provided a first heating zone incorporating at least one heating element and a second heating zone incorporating at least first and second heating elements. A thermal cut-out device includes a tem... | 12/14/1993 |
| 5208574 | Temperature sensor A rod sensor (1) has in the vicinity of a sliding guide (17) of an outer tube (2) a bolt-like, smooth abutment (4) for an inner rod (3), which prior to the insertion of the inner rod (3) and prior to the constructional joining of the temperature sensor (1... | 05/04/1993 |
| 5132657 | Temperature limiting control for an electric heating device A temperature limiting control for an electrical heating appliance such as a ceramic hob comprises switch means (11) and a temperature sensor (10) connnected thereto. The temperature sensor comprises an elongate reference member (12) of ceramic or other l... | 07/21/1992 |
| 5113170 | Temperature switch A temperature switch for limiting the temperature of a glass ceramic plate against the radiation emanating from light and dark radiators has a sensor, which comprises a metallic sensor tube and an inner ceramic rod. Over the sensor is drawn a steatite tub... | 05/12/1992 |
| 5055819 | Temperature switch A temperature switch, used more particular as a temperature limiter for a radiation heating element (11) for heating a glass-ceramic plate (12), has radiation heaters (13, 14). Its rod-shaped temperature sensor (20) has an expansion rod (24) which is disp... | 10/08/1991 |
| 5001329 | Electric cooking appliance An electric cooking appliance includes a plurality of heater lamps supported by a frame having an opening so that light is radiated from the heater lamps through the opening toward a light-transmissible top plate disposed so as to cover the opening of the... | 03/19/1991 |
| 4931621 | Electric heater In the case of an electric heater, particularly a radiant heater for glass ceramic hotplates, there are several spirally nested heating resistors, whereof one heating resistor continuously passes through in the central field in such a way that it forms tw... | 06/05/1990 |
| 4918291 | Electric heater assemblies An electric heater assembly for a glass ceramic top cooker includes a plurality of electric heating elements, a thermal cut-out device incorporating a first set of contacts for controlling the supply of electric current to at least one of the heating elem... | 04/17/1990 |
| 4908496 | Radiant electric heater assemblies A radiant electric heater assembly for a glass ceramic top cooker includes four radiant electric heating elements and a thermal cut-out device. Associated with the termal cut-out device is a switching device for connecting the four heating elements in par... | 03/13/1990 |
| 4901049 | Temperature limiter In a temperature limiter (1) with a rod-like temperature sensor (6), the outer tube is formed by a continuously tensile-stressed insulating tube (7) extending into a base (2). An inner rod (8), optionally articulated two or more times in the longitudinal ... | 02/13/1990 |
| 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 |
| 4868371 | Heating assembly using tungsten-halogen lamps A heating assembly is disclosed in which infra-red energy generated by one or more tungsten halogen lamps is transmitted through a glass ceramic layer covering the lamp or lamps. The operating temperature of the glass ceramic layer is monitored by a therm... | 09/19/1989 |
| 4845340 | Electric radiant heating element for heating a plate particularly a glass ceramic plate In the case of an electric radiant heating element (11) positioned below a glass ceramic plate (12), a rod-like temperature sensor (23) of a thermostat (24) projects over and beyond the heating zone. There are spacers (35) for maintaining a minimum spacin... | 07/04/1989 |
| 4810857 | Radiant heater unit In a radiant heater unit (1) for heating through a hotplate (2), the periphery of the heating field is formed by an initial cooking marginal heating system (9), which is e.g. operated by a short-circuit connection (19), so that it passes much more rapidly... | 03/07/1989 |
| 4764663 | Electric radiation heater assemblies An electric radiation heater assembly for a glass ceramic top cooker includes at least one heating element having a substantial positive temperature coefficient of resistance, such as an infra-red lamp. A resistive assembly is electrically connected in se... | 08/16/1988 |