Class 219/476 - Plural separate heating devices

Subclass of Class 219 - Electric heating
Definition: Subject matter including or comprising at least two or more
No. of patents: 39
Last issue date: 07/05/2011

Number	Title	Issue Date
7973265	Coupled optical waveguide resonators with heaters for thermo-optic control of wavelength and compound filter shape An integrated optical device is disclosed comprising a substrate, optical waveguide, and compound optical resonator having a temperature sensor, at least two coupled optical resonators, and a heater localized to each optical resonator. An optical input signal is cou...	07/05/2011
7378617	Heating systems and methods for a cooking appliance A heating system for a cooking appliance includes a first upper heating element and a second upper heating element positioned within a cooking cavity defined by a cabinet of the cooking appliance. The cooking cavity is configured to support a food item therein durin...	05/27/2008
7297902	High performance defrosters for transparent panels The present invention provides a window assembly having a transparent panel and a conductive heater grid formed integrally with the transparent panel. The conductive heater grid has a first group of grid lines and a second group of grid lines, with opposing ends of ...	11/20/2007
7276710	Light source unit and exposure apparatus having the same A light source unit supplies the light radiated from the plasma, and includes a stabilizer for reducing a fluctuation of a position of the light radiated from the plasma. ...	10/02/2007
7271912	Method of determining analyte concentration in a sample using infrared transmission data A method determines an analyte concentration in a sample. The sample includes the analyte and a substance. The method includes providing absorption data of the sample. The method further includes providing reference absorption data of the substance. The method furth...	09/18/2007
7163301	Method and apparatus for managing actinic intensity transients in a lithography mirror An apparatus and method for mitigating a cold edge effect within a lithography mirror is presented. The apparatus includes a heated annular zone formed on a substrate and a heated optical aperture zone formed on the heated annular zone, where each zone includes a re...	01/16/2007
7163011	Outdoor gas grill with auxiliary burner unit, and method of using same A gas grilling apparatus includes a cart, a grill housing attached to the cart, and a grill and a main grill burner contained in the grill housing. An auxiliary burner unit is also attached to the cart, and the auxiliary burner unit is located, or is placeable at a ...	01/16/2007
7150278	Multiple burner grill An improved barbeque grill having a plurality of gas-fueled cooking surfaces which can be stored in stacked relation, yet can be moved into essentially side-by-side relation for cooking. ...	12/19/2006
7115841	Imaging methods for fluorescence and reflectance imaging and spectroscopy and for contemporaneous measurements of electromagnetic radiation with multiple measuring devices Optical systems that provide for simultaneous images and spectra from an object, such as a tissue sample, an industrial object such as a computer chip, or any other object that can be viewed with an optical system such as a microscope, endoscope, telescope or camera...	10/03/2006
7091450	Two-circuit grip heater A grip heater has a tubular insulator that is designed to slip over a handlebar and has two interposed pairs of helical recesses. Each pair of helical recesses is formed by two parallel helical grooves and accommodates a heating element; the heating elements can hav...	08/15/2006
7087868	Heating device In order to create a heating device which can operate in different power stages, but only has to be contacted from one side, the invention provides a heating device with at least two plate-like ceramic heating elements, which are electrically contacted on opposite f...	08/08/2006
7081600	Method and apparatus for cover assembly for thermal cycling of samples A flexible heating cover assembly for an apparatus for heating samples of biological material with substantial temperature uniformity includes a housing having a plurality of engageable enclosure components; a resistive heater having a plurality of heater element ar...	07/25/2006
7078656	Device for electrically heating a vertically erect chamber A device for electrically heating a vertically erect chamber comprising several heating zones arranged vertically one above the other. The components of the device, with the exception of the insulating components, are made from graphite materials. Each zone (Z) comp...	07/18/2006
7005617	Apparatus and method for thermally cycling samples of biological material with substantial temperature uniformity An apparatus for thermally cycling samples of a biological material including a thermal block assembly including a plurality of sample holders for receiving samples of biological material; a heat sink thermally coupled to the thermal block assembly, the heat sink tr...	02/28/2006
6858820	Fixing device Preset electric powers are distributed and continuously supplied to a plurality of coils to uniformly heat a fixing member in a warm-up period, and the preset electric power is supplied only to the coil corresponding to a region whose temperature is lowered in a rea...	02/22/2005
6723964	Apparatus for heating and cooling semiconductor device in handler for testing semiconductor device A heating and cooling apparatus is provided which employs a series of thermally conductive plates thermally coupled to heating and cooling devices to heat or cool a mounting plate loaded with semiconductor devices. The mounting plate is assembled on a heating plate,...	04/20/2004
6657169	Apparatus for thermally cycling samples of biological material with substantial temperature uniformity An apparatus for thermally cycling samples of a biological material including a thermal block assembly including a plurality of sample holders for receiving samples of biological material; a heat sink thermally coupled to the thermal block assembly, the h...	12/02/2003
6463999	Multiloop temperature control system A multiloop temperature-control system has a hydraulic bus connected to a plurality of loops for the temperature-control medium and respective hydraulic modules connected to the hydraulic bus, and through the hydraulic bus, to these loops. Plug connectors...	10/15/2002
6466737	Portable electric space heater A method and apparatus for conditioning air includes conditioning units that are removably attached together. The conditioning units may be separated from each other and individually perform conditioning functions, such as air moving, heating, humidifying...	10/15/2002
6414281	Hot-toe multicell electric heater A multicell heater is shown with typically round outer tubing, containing a plurality of resistive heating elements having a common inner sheath. The inner sheath has a preferably non-circular cross-section and is given a hairpin bend to form a "U" shape....	07/02/2002
6348672	Electric heater for a motor vehicle with individually switched branch circuits An electric heater for a motor vehicle uses heat generated by power semiconductors as the heat source. The heat output by the power semiconductors is used directly for heating. The power semiconductors are regulated by circuit regulators to be able to adj...	02/19/2002
6321034	Pivotable heater A heater comprising two or more heating units which are rotatably attached to each other about a common axis. Preferably, each heating unit is rotatably attached to the next successive heating unit along a vertical axis by a flanged coupling. Alternativel...	11/20/2001
6316746	Defrosting assembly for a mirror of a vehicle A defrosting assembly for a mirror of a vehicle for keeping sideview mirrors free of ice. The defrosting assembly for a mirror of a vehicle includes a transparent planar sheet and an electrical wire. The electrical wire has a medial portion that is couple...	11/13/2001
6279349	Method for making glass sheet heating furnace A method for making a furnace for heating a glass sheet by lower electric resistance elements (50) supported by a furnace housing (12) below a roll conveyor (40) and by supplying a gas burner heated hot gas flow from a forced convection heater (56) that p...	08/28/2001
6153861	Heating element for lambda sensors A heating element, preferably for oblong plate-shaped sensors for measuring oxygen concentration in internal combustion engine exhaust gas, has a conductive heating strip at one end of the heating element and electrical conductors which are connected elec...	11/28/2000
6148145	Multi-temperature control system and fluid temperature control device applicable to the same system A fluid temperature control device is improved to be simpler in structure, less in fluid temperature non-uniformity, and able to heat a fluid having a small light absorbability. The fluid temperature control device has a cylindrical inner vessel (20), a c...	11/14/2000
6058245	Electric boost heater for deep fryer A fryer system having a vat containing shortening, a first heater for supplying heat to the shortening, and a second heater for supplying heat to the shortening. The second heater is preferably activated only when the temperature of the shortening falls b...	05/02/2000
6054203	Transport shield, assembly aid and operating means for glass and glass ceramic panels A transport shield is provided for brittle glass and glass ceramic panels susceptible to scratching and fracturing to be integrated into a cooker, in particular as cooking surfaces. The transport shield remains permanently joined to the panel during insta...	04/25/2000
6035097	Electrical heating unit with two concentrically disposed heating elements An electrical heating unit, particularly for a hair drier, comprises a first wire heating element, in particular a spiral coil wire heating element (2) having a heat conductor support comprising at least one support plate (4, 5, 6), and a heat conductor w...	03/07/2000
6006009	Superheated vapor generator system A superheated vapor generator system comprises at least two vapor generators connectable to a controller for causing at least one of the superheated vapor generators to generate superheated vapor during a time interval in which the at least one other supe...	12/21/1999
5925273	Electric multi-stage heater assembly An electric multi-stage heater assembly that provides multi-level heating using a plurality of separately controllable heating elements within a housing that is readily interchangeable with standard single-stage heater housings that can be controlled by c...	07/20/1999
5832179	Floor heater with water tube and thin copper electric heating element inserted therein An apparatus for heating rooms with electrically heated hot water tube, and a method therefor are disclosed. The apparatus for heating rooms with electrically heated hot water tube and a method therefor are constituted such that an electrically heating li...	11/03/1998
5628928	Method for reducing the potential difference in an electrically heatable converter by connecting the strip heater to corrugated strip with an electrical conductor A converter having electrically heatable strips connected in an electrical circuit, and intertwined with non-electricvally heated thin metal strips, having an electrical connection, or anchor, from the electrically heatable thin metal strips to the non-el...	05/13/1997
5579575	Method and apparatus for forming an electrical connection A method and apparatus of forming a solder connection between a plurality of elongate bodies, comprises: (i) forming an initial connection between the elongate bodies by inserting them into an induction heatable connecting element of a connector, the conn...	12/03/1996
4792246	Apparatus for raised printing Raised printing is produced on a printed sheet by applying thermography powder to a top printed surface of the sheet while printed areas on such top surface are tacky, such that the powder adheres to such printed areas and is thereafter melted in a heatin...	12/20/1988
4580144	Postal fixed and variable data thermal printer The invention features a high speed thermal printing mechanism having a dichotomized printing sequence. The thermal printing mechanism is particularly useful for printing postal values and indicia upon postage tape in a variable and fixed format, respecti...	04/01/1986
4217481	Cooking appliance with several electric cooking zones A surface-unit cooking appliance comprising a plurality of electric hot plates of the same type, each of the hot plates having a temperature regulator and each of the regulators having a temperature sensor for sensing the temperature of a cooking vessel o...	08/12/1980
4071738	Ventilated range with convertible radiant convection oven Disclosed is a domestic cooking range of the ventilated type having surface elements and an underlying oven characterized by an extension of the ventilating fan motor shaft carrying an auxiliary fan disposed within the oven which provides forced circulati...	01/31/1978
4015104	Control system for electrically operated heat generating apparatus A control system for controlling energization of electrically operated heat generating apparatus included in a multizone electrical heating system. Each of the zones has at least two parallel connected heat generating stages. The second stage heat generat...	03/29/1977

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Class 219/476 - Plural separate heating devices