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Patent No. 5421089

Fork With Timer

A fork with timer for providing a cue to a user after an elapsed period of time for indicating that another bite of food using the fork may be taken.

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Class 392/458 - With external heater


Subclass of Class 392 - Electric resistance heating devices
Definition: wherein the heating device is located outside of the tank
No. of patents: 35
Last issue date: 01/22/2008


NumberTitleIssue Date
7321723Electric radiator
An electric radiator comprising at least one laminar element, at least one electrified flexible sheet being fixed on the face of said element that is not exposed once installed, the sheet being electrically connectable to an electric power source. Elements for fixin...
01/22/2008
7287663Lined pressure vessel and connector therefor
A pressure vessel is disclosed which includes a lower metallic dome having a lower rim portion, and an upper metallic dome having an upper rim portion, a plastic liner disposed within the upper and lower metallic domes, a metallic band disposed between the plastic l...
10/30/2007
7238196Skin-contacting heatable dressing
A skin-contacting heatable dressing including a pressure-sensitive adhesive layer having a first skin-contacting side and a second side; heat generating conductive carbon fibers contained within the skin-contacting pressure sensitive adhesive layer; and a source of ...
07/03/2007
7228571Method of making a helmet
A method of making a helmet comprises the steps of cutting a plurality of substantially rectangular, preferably square, blanks from a sheet of resin-impregnated fabric, making curved cuts (1) in each blank to form a crown portion (5) and lobe portions ...
06/12/2007
6704497Electric heating devices and elements
Heating device having a substantially flat heating element with specifically selected physical parameters is provided for heating an object to a required temperature. The physical parameters are selected such as to, at a given power and at a selected volt...
03/09/2004
6553948Water heater
In a water heater, an outer casing includes a hollow flue tube that extends vertically from an inner periphery of a bottom wall thereof, and an outer surrounding wall that extends uprightly from an outer periphery of the bottom wall and that cooperates wi...
04/29/2003
6483990Electric heating devices and elements
Heating device having a substantially flat heating element with specifically selected physical parameters is provided for heating an object to a required temperature. The physical parameters are selected such as to, at a given power and at a selected volt...
11/19/2002
5966501Method for controlling the viscosity of a fluid in a defined volume
A method is provided for heating the interior surface of a defined volume, such as the interior of a pipe or tank, to control the viscosity of a liquid contained within that volume. In the method, a laminated composite heater element, impermeable to water...
10/12/1999
5712952Boiler for coffee machine of the espresso type
A boiler for an espresso coffee maker comprises a metallic body (12) comprising a cover (15) with a peripheral flange (16) and a cup (18) connected in sealed fashion to the cover (15). A downwardly-extending water supply tube (26) extends through the cove...
01/27/1998
5557704Heating vessel with chromium-enriched stainless steel substrate promoting adherence of thin film heater thereon
A kettle which includes a vessel that provides a chamber for holding water, a pouring spout for dispensing water from the chamber, and a handle for lifting and tilting the vessel during pouring, also includes an electric heating element in the form of a c...
09/17/1996
5433379Dual tank water heating system
A dual tank water heating system has an exterior tank which surrounds an interior tank. Water in the exterior tank is maintained at a prescribed temperature by heating elements located beneath the outer tank. Water in the interior tank is heated by water ...
07/18/1995
5367605Boiler with deformable wall for removing scale
A boiler for the production of steam and/or hot water has a principal enclosure limited by a watertight wall for containing water, a bottom water extraction outlet,a water supply inlet, an upper steam outlet and a level detector controlling the water leve...
11/22/1994
5354965Window cleaning fluid heating system having timer-controlled heater and differential input circuit
A system for electrically heating a volume of windshield cleaning fluid in a motor vehicle includes a metallic vessel connected between a windshield fluid reservoir and a nozzle for spraying the windshield with the fluid. The vessel has a metal heater wal...
10/11/1994
5271085Temperature-controlled laboratory beaker comprising a heating element and temperature sensor bonded to the outer surface of the beaker by a silicone-rubber molding
A temperature-controlled laboratory heating apparatus consisting of a flexible electrical heater wrapped around the exterior surface of a conventional glass or metal beaker and permanently encased within a rubber molding forming an insulating ring around ...
12/14/1993
5209115Liquid detector for thin-walled tanks operating in zero gravity
A liquid detector for thin-walled tanks Operating in a zero gravity environment (e.g., outer space). The liquid detector includes a small heater, such as a 1-watt patch heater, and two thermistors positioned on either side of the heater and diametrically ...
05/11/1993
5067170Electric water warming system
An electric water warming system generally comprises a cylindrical first water storage tank to be installed in a vertical fashion, a water feed pipe connected to a bottom portion of the first water storage tank for feeding water therein, and a hot water f...
11/19/1991
5057667Aquarium heater
An aquarium heating system utilizes a conductive coating on an aquarium glass viewing window to heat the aquarium water. The conductive coating is transparent and is disposed on the surface of at least one viewing window. A voltage is supplied to the cond...
10/15/1991
4935602Heating apparatus of tank type
Heating apparatus of tank type comprises a first and a second heating element in a flexible material applied respectively onto the peripheral and bottom wall. The first and the second element have respectively a substantially rectangular and circle-sector...
06/19/1990
4636160Device for tightening a coil on a cylindrical body
A device for tightening a coil on a cylindrical body. The device has a first anchor for connecting one end of the heater coil to the cylindrical body, and a second anchor for connecting the second end of the coil to a rotatable ring on the cylindrical whi...
01/13/1987
4634838Electrically heated coffee percolator
An electric coffee percolator is provided with a fresh water container located above a water heating chamber sized to receive and retain about 30-60% of the volumetric amount of fresh water required for a complete coffee infusion. The heating chamber is s...
01/06/1987
4625096Liquid bath temperature control
The temperature of a liquid bath in the tank of a clinical analyzer is precisely regulated to a known reaction temperature, for example, 37.0 degrees C., notwithstanding the transport of cuvettes through the tank by a conveyor for photometric analysis, by...
11/25/1986
4620667Hot water heating system having minimum hot water use based on minimum water temperatures and time of heating
A conventional hot water heating system generally of the type for heating water in multiple units of hotels, motels, schools and the like and using any heating medium has a processor and control assembly which is operationally connected to at least a wate...
11/04/1986
4599992Anticipatory thermostat with reset for domestic hydronic boiler control
A hot water heating system for a building has a hot water storage tank, a combustor, a burner for firing the combustor, a plurality of radiators, a pump for circulating hot water to and from the plurality of radiators, a first thermostat for measuring the...
07/15/1986
4506138Magnetically attachable electric preheater for automobile engines
A preheater unit magnetically attachable to the surface of the oil pan of an automobile engine includes an electric heating unit and a magnetic device situated within a rectilinear shell having an open side closed by a non-magnetic heat transfer plate. Th...
03/19/1985
4485831Cooking oil salvage system
A used cooking oil disposal system for receiving oil from a building includes an oil receiving means inside the building communicating with an external, insulated, cylindrical holding tank having thermostatically controlled heater means servicing at least...
12/04/1984
4413775Water heater control system
A water heater control system designed to conserve energy, in part by anticipating hot water demand as a function of usage, utilizes refined design features to effectively automatically switch the water heater's thermostat between a high and a low setting...
11/08/1983
4395623Self-regulating electric heater
A self-regulating electric heater includes a casing made of ceramic and a heating unit housed in the casing. The heating unit includes a PTC body for generating heat when electric current is supplied, heat dissipating plates essentially made of brass and ...
07/26/1983
4296637Method and apparatus for sampling hot homogeneous mixtures
A portable vessel for a sample of gas, some components of which may condence when cooled to ambient temperature. The container with inlet and outlet valves is surrounded by a heater and insulation so that the sampled material can be maintained above the d...
10/27/1981
4209303Method and apparatus for recovery of combustible gas from waste
A method and apparatus is disclosed for recovery of combustible gas formed from combustible refuse or vegetable matter in an enclosed space from which the combustible gas is collected. Water can be injected into the apparatus and the decay process initiat...
06/24/1980
4182567Apparatus for continuously processing photographic films or the like
A continuous processor for exposed webs of photographic paper has several tanks and a system of hoses which connect the outlets in the lower portions with the inlets in the upper portions of the tanks. The liquid developer is circulated by a pump and is h...
01/08/1980
4153046Plastic, heated water container for tape machines
A plastic, heated water tank for gummed tape dispensing machines that resists corrosion, is easy to clean, reduces the likelihood of burning the user, and yet affords good heat transfer from an external heating element into the water in the tank. It provi...
05/08/1979
4150665Heater for hot tubs and storage tanks
A heater for use with hot tubs formed from material subject to damage from excessive heat, the heater comprising a heating element arranged within a chamber adjacent a thermally conductive plate with one or more hollow extensions penetrating through a sur...
04/24/1979
4131785Electrically heated liquid tank employing heat pipe heat transfer means
The heating apparatus for applying heat to the interior of a chamber includes a modular, removable, electrical, heat-producing unit and a heat pipe mountable in a wall of the chamber with one end of the pipe arranged to receive heat from the electrical he...
12/26/1978
4084547Safe start checking liquid processing system
A self checking system is disclosed in various forms, and is specifically shown as applied to a system which checks the level of water in a boiler before an associated fuel burner system is initiated. Before the liquid or water in the system can be proces...
04/18/1978
4028527Apparatus and control system for heating asphalt
An apparatus is disclosed for melting asphalt and for maintaining it in a molten condition without producing by-products harmful to the atmosphere. The asphalt is heated and maintained in a liquid state in an enclosed vessel by transferring heat from a he...
06/07/1977
 
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