| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 219504000 | Comprising variable resistance means | 8 |
| 20140291314 | GLOW PLUG CONTROL DEVICE - The invention relates to a glow plug control device comprising a power transistor for switching the heating current on and off, a control unit for controlling the power transistor, a measuring resistor connected in series with the power transistor for measuring the intensity of a heating current, and a circuit board, which carries the power transistor, the control unit and the measuring resistor. The measuring resistor is connected to the circuit board via pins which are pressed into circuit board holes and which are made of an alloy that has a copper content of at least 80% by weight and a nickel content from 4 to 12% by weight. This disclosure also relates to the use of an alloy having a copper content of at least 80% by weight and a nickel content from 4 to 12% by weight for a pin of a press-in connection in a glow plug control device. | 10-02-2014 |
| 20150377513 | SELF REGULATING INLINE HEATER - Embodiments provide systems and methods for improving in-line water heaters. Certain embodiments find particular use on board aircraft, other air travel vehicles (such as helicopters or aerospace vehicles), or any other vehicles that experience varying temperatures. The in-line water heaters described are self-regulating and use a temperature dependent resistance element to detect water temperature instead of a temperature sensor. | 12-31-2015 |
| 20160113063 | ELECTRICAL HEATER - An electrical heater comprising; a first conductor, a second conductor, and a fluoropolymer heating element disposed between the first conductor and the second conductor, and a temperature regulation element disposed between the fluoropolymer heating element and the second conductor, wherein the fluoropolymer heating element comprises an electrically conductive material distributed within a fluoropolymer, and wherein the electrical heater comprises a stack, the first conductor, the second conductor, the fluoropolymer heating element, and the temperature regulation element comprising layers of the stack. | 04-21-2016 |
| 219505000 | Comprising nonlinear or negative temperature coefficient resistance means | 5 |
| 20090283511 | Controllable electrothermal element of PTC thick film circuit - The present invention discloses a controllable electrothermal element of a PTC thick film circuit which comprises a substrate and a serial electronic paste, the serial electronic paste is prepared on the substrate, the said serial electronic paste comprises a medium paste and an electrode paste, the serial electronic paste is consists of three parts that are functional phase, inorganic adhesive phase and organic carrier. The said serial electronic paste further comprises PTC paste, the said substrate is 1Cr18Ni9 series stainless steel substrate, the serial electronic paste in the form of thick film is prepared on the substrate, the present invention also discloses the composition of the said medium paste, the PTC paste and the electrode paste. The present invention has the followed benefits: the distribution of a heated temperature field is controllable; restricting temperature automatically, setting temperature automatically, controls randomly, the power density is large, the response speed is fast, the mechanical strength is high, vibration is suppressed, anti-heat-impact capability is strong, the formal structure is compact, the life is long, the energy is saved, appliance range is wide. | 11-19-2009 |
| 20100051606 | Heating device and its temperature control method - A heating device and its temperature control method, wherein an NTC element envelops a core member, a sensing wire is wound around an outside periphery of the NTC element for making parallel connection of the core member with the sensing wire; further, a capacitor, the sensing wire and an electric resistor are connected in series to form an RC circuit, the RC circuit is connected with a microprocessor and a switch. Thereby when the microprocessor outputs a control signal containing at least a duty cycle square wave in a predetermined time to control the switch to make a direct-current electric power source electrically charge/discharge for the RC circuit; meanwhile, the microprocessor measures RC time constant of the RC circuit, and when it detects changing of the RC time constant reaches a preset state, it outputs a control signal to make the heat emitting line and the direct-current electric power source in a state of circuit turning on or off, such that the heat emitting device is kept at a predetermined working temperature. | 03-04-2010 |
| 20100059502 | CONTROL OF HEATING CABLE - Devices and methods for the control of heating cables are described. A first heating cable assembly includes a heating cable, a heater regulator for connection electrically in series between the heating cable and a voltage source. The heater regulator comprises a material having a positive temperature coefficient of resistance such that in use the voltage across the heating cable is dependent upon the temperature of the heater regulator. A second heating cable assembly includes a heating cable having a resistive heating element, a material having a positive temperature coefficient resistance for controlling the heat output from the heating cable, and a cold start limiter element comprising a material having a negative temperature coefficient of resistance for connection electrically in series with the heating element and a voltage source. | 03-11-2010 |
| 20100140253 | Positive Temperature Coefficient (PTC) Rod Assembly - A Positive Temperature Coefficient (PTC) assembly, in which protrusions are formed on opposite longitudinal edges of an electrode terminal, PTC elements are held between the protrusions and are in contact with the electrode terminal, an insulating member is attached to an outer surface of the electrode terminal, and a rod cover houses therein the electrode terminal, the PTC elements and the insulating member. A simple structure is realized, fabrication costs are reduced, and a hollow space inside the rod cover is minimized, leading to improved heat transfer efficiency from the PTC elements to the rod cover, reduced noise and a slim structure. | 06-10-2010 |
| 20190142206 | Method for Adjusting the Heating Power of At Least One Heating Element of a Domestic Appliance | 05-16-2019 |
