Class 392/486 - Plural pipes or tubes form flow path

Subclass of Class 392 - Electric resistance heating devices
Definition: Subject matter wherein the flow path for the fluid to be
No. of patents: 36
Last issue date: 09/04/2012

Number	Title	Issue Date
8260126	Dual wall axial flow electric heater for leak sensitive applications A dual wall axial flow electric heater for leak sensitive applications provides an improved corrosion and leak resistant assembly and includes protective tubes over electrical heater rods, double tubesheets spaced apart by a plenum and leak detectors positioned to s...	09/04/2012
7496285	Multi-pass parallel-tube heat exchanger A multi-pass parallel tube heat exchanger is disclosed. The multi-pass parallel tubes heat exchanger provides a compact, light and inexpensive heat exchanger that may be oriented in any direction. These features and others make the disclosed exchanger ideal for use ...	02/24/2009
7368832	Circuit and fault tolerant assembly including such circuit A circuit is provided that provides for the same power characteristics to an assembly of electrical resistive elements wired in parallel as to the assembly as wired in series. An input power source provides electrical resistive power to a plurality of load elements,...	05/06/2008
7289924	Self-calibrating sensor A method for self-calibrating a sensor can be implemented in a system having a calibration circuit. The calibration circuit has differential circuitry which compares an output signal of the sensor with a predetermined reference signal associated with a reference pro...	10/30/2007
7190894	Energy efficient electric water heater system that provides immediate hot water at a point of use and a method therefor A water heater system that will provided immediate hot water to a point of use has a water storage container having an inlet coupled to a water pipe and an outlet coupled to a point of use fixture. A low current heating element is located within the water storage co...	03/13/2007
7091456	Aircraft hot water supply system An aircraft hot water supply system (10) comprising a group of water-use stations (14a–14f) each including a hot water line having a heater (40a–40f) which heats water at a heating rate dependent upo...	08/15/2006
7088915	Modular tankless water heater A tankless water heater module is disclosed and includes a casing having a first end, a second end and a plurality of conduits formed therein. A top head manifold is coupled to the first end of the casing and includes a port aligned with each of the plurality of con...	08/08/2006
7076814	High flow rate water supply assembly An assembly for rapidly filing bathtubs, whirlpools, spas, washing machine drums and the like includes a basin, water storage tank(s) (such as hot and cold water storage tanks), and a system for controlling the filling of the basin from the tank(s). When it is desir...	07/18/2006
7046922	Modular tankless water heater A tankless water heater module is disclosed and includes a casing having a first end, a second end and a plurality of conduits formed therein. A top head manifold is coupled to the first end of the casing and includes a port aligned with each of the plurality of con...	05/16/2006
7039305	Heat conductive tubular electric heater A heat conductive tubular electric heater is disclosed. In the heater body, a water inlet tube is connected to a heat conductive tube and an electric tube is installed within the heat conductive tube so as to form a water path between a periphery of the electric tub...	05/02/2006
6998586	Device for heating article to be treated The present invention provides heating equipment of a treated substance designed so as to be equipped with any foil of a metallic material or non metallic material for heating the treated substance, and a heating mechanism for heating the foil to a temperature where...	02/14/2006
6968125	Suspendable industrial electrical liquid heater An electric heater for industrial liquids comprises a plastic flat box that contains a stainless steel pressure vessel holding a number of parallel electrical heating rods. These heating rods are interlaced with shorter “I” shaped Teflon rods which generates a t...	11/22/2005
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
6873790	Laminar air flow, low temperature air heaters using thick or thin film resistors An elongate heating element that includes an insulative substrate and a resistive coating that heats to a predetermined temperature when an electrical current is passed through the coating. The insulative material forming the substrate is preferably a ceramic such a...	03/29/2005
6853804	Ice and snow removal system One or more dispensing conveyances (1) have outlet apertures (2) or conveying and dispensing heated water to surfaces of roofs (3) and other structural surfaces selectively when ice and snow is being accumulated or has accumulated thereon. The w...	02/08/2005
6825443	Vehicular and outdoor water-tank valve heating system A vehicle or stationary liquid, water or oil tank heater teaches that a hot fluid may be passed through a metal body placed in the water piping or in the vacuum piping, thereby melting any ice in the system and preventing further freezing. The system may be advantag...	11/30/2004
6539173	Sensor controlled water heater and method of use A water heater apparatus for aircraft applications has three water heating tubes joined in series interconnection and positioned in side-by-side adjacency, where each of the tubes provides an electrical resistance heater part of a 3 phase electrical power...	03/25/2003
6424801	Upright cylindrical water heater with top and bottom can covers A miniature water heater apparatus has three water heating tubes joined in series interconnection and positioned in side-by-side adjacency. The water heating tubes are enclosed within a cylindrical container with opposing closed ends. A top and a bottom c...	07/23/2002
6280688	Rinsing device for sample processing components of an analytical instrument A device for rinsing sample processing components of an analytical instruments including an inlet coupleable to a fluid source, an outlet coupleable to sample processing components of an analytical instrument, and a fluid reservoir between the inlet and o...	08/28/2001
6246831	Fluid heating control system An improved system, method and apparatus for control of an instantaneous flow-through fluid heater system is disclosed. The control incorporates a logic control method providing modulation of power in small steps to a plurality of heating elements retaini...	06/12/2001
5548100	Article warmer with heated frame and flexible enclosure A warmer and dryer for fabric articles having a vertically disposed heated frame upon which one or more articles can be draped. A heated fluid is circulated through the frame by a pump that is mounted in the base of the frame. The frame is enclosed by a f...	08/20/1996
5438642	Instantaneous water heater A heater for the rapid heating of water includes a main body having plural vertical upwardly opening chambers, combined with a molded cover plate that can be removably installed over the upper part of the main body. A plurality of combination heating and ...	08/01/1995
5408578	Tankless water heater assembly A continuous flow water heater assembly requiring no storage tank and including an entrance chamber having a flow control switch mounted therein adapted to be activated upon a positive flow of water through the system wherein the water flows from the entr...	04/18/1995
5353370	Non-uniform temperature profile generator for use in short duration wind tunnels Apparatus for producing a non-uniform temperature profile in a short duration wind tunnel includes a plurality of nested cylindrical elements each having an inlet end and an outlet end, a plurality of heater element extending axially along the surface of ...	10/04/1994
5277152	Water heater A water heater includes a base formed in a board, a control device disposed on the base, a vessel fixed to the board and connected to the base, and a heater disposed in the vessel for heating the water contained in the vessel. The water heater occupies a ...	01/11/1994
5216743	Thermo-plastic heat exchanger The present invention provides a flow-through instantaneous fluid heater system designed to satisfy the need for a heater not limited by being connected to a storage tank and which can be made using a plastic casing, incorporating cool-down when out of se...	06/01/1993
5134684	Electric air or gas heater utilizing a plurality or serpentine heating elements An electric air or gas heater includes a plurality of equal diameter elongated linear serpentine resistive wire heating elements circularly arranged in parallel about a common axis and disposed within a cylindrical chamber having separable air or gas entr...	07/28/1992
5129034	On-demand hot water system An on-demand electric water heater includes at least one heating chamber having an electric heating element operatively positioned between a cold water inlet and a hot water outlet. The heating elements are controlled by pressure sensing switches activate...	07/07/1992
4883943	Electric heater for fuel tank discharge opening coupling to prevent fuel waxing A coupling for connecting a fuel delivery conduit to the discharge opening of a diesel fuel tank includes a hollow fitting body defining a flow passage in which is located an electric heating rod for heating the fuel as it flow through the passage from th...	11/28/1989
4797535	Tungsten-halogen heater A method and apparatus for heating by use of tungsten-halogen heating elements. A space heater for use with a radiator or other heat using apparatus employs the principle of collecting heat emitted by a tungsten-halogen element by use of a heat transfer f...	01/10/1989
4567350	Compact high flow rate electric instantaneous water heater A compact instantaneous-type electric water heater for household and commercial use provides hot water at a rate of at least five gallons per minute and includes a plurality of individual heating chambers connected in series flow relationship between a co...	01/28/1986
4323760	Method and apparatus for temperature control of heated fluid in a fluid handling system A method and apparatus is disclosed for maintaining uniform temperature in a pressurized, heated fluid which is distributed from an elongate manifold in at least one pressurized stream. Associated with each of a plurality of inlet conduits is a separate h...	04/06/1982
4310747	Method and apparatus utilizing a porous vitreous carbon body particularly for fluid heating A body of a specially prepared, porous vitreous carbon which does not crack or substantially change in electrical resistance with time when heated to elevated temperatures in air and which is used in a method or apparatus to heat a fluid stream flowing in...	01/12/1982
4236548	Apparatus for providing instant hot water A control system for providing instant hot water at a hot water tap comprising a control unit adapted to be interposed in the fluid line between the source of water supply and the hot water tap. A heating unit is also interposed in the fluid line between ...	12/02/1980
4129178	Heat exchange installation for heating and cooling a liquid heat carrier medium A heat transfer arrangement operable selectively for heating, cooling and tempering in which a heating and cooling system, and a pump are applied under predetermined flow conditions, whereby directed and substantially constant speed prevails over the enti...	12/12/1978
4095087	Miniature system for central heating and water heating A miniature heater system has electric immersion heaters in a heating enclosure which forms a compact monoblock composite unit resistant to high pressures. In this unit several horizontal tubes are connected at or near their ends by two vertical distribut...	06/13/1978

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Class 392/486 - Plural pipes or tubes form flow path