| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 219481000 | With protective means for heater | 16 |
| 20090179025 | RESISTOR ANODE ASSEMBLY - A sacrificial anode assembly. The sacrificial anode assembly includes a sacrificial anode, an insulator positioned around an end of the anode, an electric coupler positioned around the insulator and extending beyond the end of the anode, the electric coupler electrically isolated from the anode, a resistor having a first lead and a second lead, the first lead electrically connected to the anode and the second lead electrically connected to the electric coupler, and a cap positioned around the electric coupler, the cap electrically connected to the electric coupler and electrically isolated from the anode. The cap complete encapsulates the resistor, the first lead, and the second lead. | 07-16-2009 |
| 20100116812 | DRY FIRE PROTECTION SYSTEM - A dry fire protection system for a water heater is provided. The water heater includes a body having an elongated hollow for holding water to be heated, an inlet opening and an outlet opening in communication with the hollow for flowing water therethrough. A heating element is coupled to the body for heating the water within the hollow. The dry fire protection system comprises a sensing element disposed in the hollow of the body for detecting the presence of water in the hollow. The sensing element is spaced from and operably connected to the heating element. The sensing element is configured to generate a voltage in response to a temperature of the sensing element. A controller is operably connected to the sensing element for monitoring the generated voltage across the sensing element. The controller is configured to prevent a supply of electrical power to the heating element as a function of the generated voltage. | 05-13-2010 |
| 20100147826 | CARTRIDGE TYPE HEATER - A cartridge type heater is provided with at least one hot wire coil ( | 06-17-2010 |
| 20110155715 | Radiant Heater Device - The invention relates to constructing a heating device that employs electrical resistance foils to provide a uniform heat. In embodiments of the invention applicable for providing heat from a ceiling location, the device provides this uniform heat at a comfortable temperature. | 06-30-2011 |
| 20120018416 | CERAMIC HEATER - The ceramic heater | 01-26-2012 |
| 20120199574 | HEATER WIRE SAFETY CIRCUIT - A safety overheat protection circuit for flexible heater wire used in heating pads and electric blankets. The heater wire includes a low melt temperature fuse-able layer and a conductive core. A polymetric positive temperature coefficient (PPTC) device is used in series with the heater wire in a configuration so that a hot spot anywhere along the length of the wire will cause the fuse-able layer to melt and the heater wire to short to the conductive core, increasing the current and causing the PPTC device to change to a high impedance state significantly removing power to the heater wire. In addition, dual circuits having the same operating target temperature are presented as a safe method of temperature control. | 08-09-2012 |
| 20120325800 | Formable Helical Wire Heating Coil Assembly - The supporting frame for a helical wire heating coil assembly is initially formed in a straight linear manner using an angular cross section shape and including integrally formed linear arrays of clips for mounting insulating stand-offs, attachment tabs for mounting the assembly and open notches that permit the frame to be subsequently formed into a circular or other arcuate shape. | 12-27-2012 |
| 20130134149 | HEATER WIRE SAFETY CIRCUIT - A dual heater wire circuit for use with a heating pad or electric blanket includes two independent heater wire circuits. Each heater wire circuit includes a heater wire and a temperature sensor conductor. The temperature sensor conductor of each heater wire circuit is connected to a capacitor, or to a resistor, to define with the capacitor or resistor a voltage divider circuit. The juncture between the sensor conductors and either the capacitor or the resistor is provided to the input of a microprocessor. The electrical resistance of the temperature sensor conductors varies with temperature. The signal provided to the microprocessor from the voltage dividers formed between the sensor conductors of the heater wires and either the capacitor or resistor will vary in phase or voltage relative to the temperature of the heater wires. The microprocessor controls the duty cycle of the power signal provided to the heater wires. | 05-30-2013 |
| 20130146584 | MOISTURE RESISTANT LAYERED SLEEVE HEATER AND METHOD OF MANUFACTURE THEREOF - A heater assembly is provided that includes a substrate having opposed end portions defining raised flanges, a slot extending between the opposed end portions, and opposed chamfered surfaces extending along the slot and across the raised flanges. A plurality of layers are disposed onto the substrate, along with a pair of terminal pads. A protective cover defining at least one aperture is disposed over the layers and is secured to the raised flanges and the opposed chamfered surfaces of the substrate, and the aperture is disposed proximate the terminal pads. A pair of lead wires is secured to the pair of terminal pads, and a lead cap assembly is disposed around the pair of lead wires and is secured to the protective cover. | 06-13-2013 |
| 20140110395 | SYSTEM INCLUDING TUNABLE CHOKE FOR HYDROCARBON RESOURCE HEATING AND ASSOCIATED METHODS - A system and method for heating a hydrocarbon resource in a subterranean formation having a wellbore extending therein, include the use of a radio frequency (RF) source, an RF antenna to be positioned within the wellbore and a transmission line coupling the RF source and the RF antenna. A tunable choke is positioned on the transmission line between the RF source and RF antenna, and a controller is coupled to the tunable choke. The controller may be configured to tune the tunable choke to reduce a common mode current from propagating on an outside of the transmission line toward the RF source. | 04-24-2014 |
| 20140284319 | ELECTRIC HEATER - An electric heater includes a base, a bracket, a working head and a protecting structure. The bracket is disposed on the base. The working head is disposed on the bracket. The working head includes a supporter and a heating module. The heating module is disposed on the supporter. The heating module includes a heating element and at least two electrodes. The at least two electrodes are electrically connected with the heating element. The heating element includes a carbon nanotube layer structure. The protecting structure covers the heating module. | 09-25-2014 |
| 20140312027 | FLEXIBLE ELECTRIC HEATERS - Embodiments include a flexible fabric heater. The fabric heater has a conductive base fabric having elastic properties. The base fabric may be coupled to electrical terminals. A elastomeric layer may be applied on the base fabric. The elastomeric layer may have elastic properties and includes a liquid-resistant material. A first thermal layer may be applied proximate edges along the electrical coupling between the fabric heater and the electrical terminals. The first thermal layer can have heat-resistant properties. | 10-23-2014 |
| 20140353303 | HEATER FOR FIXING DEVICE - A heater for fixing devices includes a glass substrate, a heating element, electrode patterns connected to the heating element, a first protective layer, and a second protective layer. The glass substrate is made of an alkali-free glass. The first protective layer is formed by firing a mixture of a first glass powder and a first filler. The first glass powder contains no alkali metal oxide and has a lower softening point than the glass substrate. The first filler has a lower thermal expansion coefficient than the alkali-free glass for the glass substrate. The second protective layer is made of a material that does not contain the first filler contained in the first protective layer. | 12-04-2014 |
| 20150014298 | SELF-ADHESIVE RADIANT HEATING UNDERLAYMENT AND APPARATUS FOR MANUFACTURE - Provided herein is a self-adhesive underlayment and an apparatus for its manufacture. The apparatus is operative to remove portions of release sheets covering upper and lower adhesive membranes and compress resulting exposed adhesive surfaces of the membranes to upper and lower surfaces of a flexible heating element. | 01-15-2015 |
| 20160037582 | BI-POLAR TRIAC SHORT DETECTION AND SAFETY CIRCUIT - A safety circuit to disrupt power to a heating element of an appliance to be powered through a solid state switch (Tri-ac Q | 02-04-2016 |
| 20160044745 | HEATER CONTROL DEVICE AND IMAGE FORMING APPARATUS - A heater controller and heater control method is disclosed. The hater controller includes a detector, a determination circuit, a limiting circuit, a selection circuit, and a driving circuit. The detector detects a temperature of the heating object, which is heated by the heater. The determination circuit determines turn-on ratio for the heater for every control cycle of AC voltage, based on the surface temperature of the heating object and a target temperature of the heating object. The limiting circuit limits the turn-on ratio of current control cycle when the control method of previous control cycle is phase control. The selection circuit selects control pattern to control the heater, based on the turn-on ratio, and the driving circuit applies a heater driving signal to the heater. | 02-11-2016 |
