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| Number | Title | Issue Date |
| 7292154 | Monitor and method for sensing temperature differences A monitor can sense the difference in temperature between the inside and the outside of an enclosure containing electrical power equipment. The monitor has a case adapted for mounting at the enclosure. Also included is a first and a second sensor for producing a fir... | 11/06/2007 |
| 7216064 | Method and apparatus for programmable thermal sensor for an integrated circuit A programmable thermal sensor is implemented in an integrated circuit such as a microprocessor. The programmable thermal sensor monitors the temperature of the integrated circuit, and generates an output to indicate that the temperature of the integrated circuit has... | 05/08/2007 |
| 7046155 | Fault detection system A fault detection system detecting malfunctions or deteriorations, which may result in an inverter fault, is provided. The system has a temperature sensor installed on a semiconductor module to monitor a temperature rise rate. It is judged that an abnormal condition... | 05/16/2006 |
| 7023172 | Motor controller An electric motor control apparatus of this invention estimates changes in temperature of a semiconductor device to compute temperature change amplitude 108 based on an output current signal 105 computed from a current flowing through the semiconductor... | 04/04/2006 |
| 7011444 | Fire sensor A fire sensor comprising a baseplate, a temperature detecting element, and a protective case. The baseplate has an outside surface which serves as a heat sensing surface which is exposed to a hot airflow generated by a fire. The temperature detecting element thermal... | 03/14/2006 |
| 7005992 | Temperature monitor for electro-mechanical part A temperature monitor includes a temperature sensor, a transmitter, and a controller. The temperature sensor generates a temperature signal based upon a detected temperature and the controller controls the temperature sensor to generate the temperature signal and co... | 02/28/2006 |
| 6959258 | Methods and structure for IC temperature self-monitoring Methods and systems are provided for thermal self-monitoring of integrated circuits. Temperature is sensed, digitized, encoded, and compared to one or more threshold values by circuits added within an integrated circuit. A signal produced by a thermal diode within a... | 10/25/2005 |
| 6943694 | Bottoming sensor The present invention is directed to a cushioning device. The present cushioning device has many attributes that are common with many cushions. Some of these common attributes are at least one bladder having a top surface, a bottom surface and at least one side surf... | 09/13/2005 |
| 6847291 | Apparatus for detection of water level and temperature in a bathing appliance An apparatus operable in a wet environment for detecting the presence or absence of water in a non-conductive vessel, by measuring changes in dielectric constant and detecting the temperature of water in same vessel. A conductive element coupled to a sensing and swi... | 01/25/2005 |
| 6759964 | Fault detection system A fault detection system detecting malfunctions or deteriorations, which may result in an inverter fault, is provided. The system has a temperature sensor installed on a semiconductor module to monitor a temperature rise rate. It is judged that an abnormal condition... | 07/06/2004 |
| 6696959 | Broken bag sensing feature for a metallized ink bag An ink system is disclosed which includes a broken bag sensing feature for use with conductive ink. The ink system preferably includes an ink containment bag with a metallized layer insulated from the bag interior; a first electrical contact with the meta... | 02/24/2004 |
| 6369712 | Response adjustable temperature sensor for transponder A response-adjustable temperature sensor (306, Rext), particularly for a transponder (102, 200, 400) capable of measuring one or more parameters (e.g., temperature, pressure) and transmitting a data stream (FIGS. 3C, 4B) to an external reader/interrogator... | 04/09/2002 |
| 5856780 | Semiconductor sensors and method for detecting fires using such sensors A fire detector, for connection in a fire protection/alarm system, comprises an array of sensors, or a single sensor, of the semiconductor resistor type impregnated with a noble metal. The detector is responsive, by way of a decrease in its resistance, to... | 01/05/1999 |
| 5847643 | Apparatus for indicating motor vehicle impact A honk strip comprising an electrical power source, electrical leads, electrically conducting members and an alarm. The honkstrip being useful for detecting vehicular impact with other objects and signaling a vehicle operator that an impact has occurred.... | 12/08/1998 |
| 5710515 | Non-volatile memory in power and linear integrated circuits A testable temperature warning circuit (120) in an integrated circuit substrate (124) provides a warning if the substrate temperature exceeds a critical temperature. A programming circuit (140) controls a selection, circuit (128) to establish a programmab... | 01/20/1998 |
| 5355123 | Overheating detection circuit for detecting overheating of a power device An arrangement for detecting overheating of a power integrated circuit includes a power device integrated in a semiconductor substrate and an overheating detection circuit. The overheating detection circuit includes a reverse biased pn junction formed in ... | 10/11/1994 |
| 5349336 | Overheating detection circuit for detecting overheating of a power device An arrangement for detecting overheating of a power integrated circuit includes a power device integrated in a semiconductor substrate and an overheating detection circuit. The overheating detection circuit includes a reverse biased pn junction formed in ... | 09/20/1994 |
| 5070322 | An overheating detection circuit including a reversely biased junction having a temperature dependent reverse leakage current for detecting overheating of a power integrated circuit An overheating detection circuit has a simple circuit construction and may be formed in the same substrate as that of a power integrated circuit. It can produce a large output signal in response to detection of a temperature within a preselected range of ... | 12/03/1991 |
| 4970497 | Method and apparatus for sensing thermal stress in integrated circuits An integrated semiconductor chip includes, integral to its substrate, a thermal sensing circuit formed from an array of transistors connected together in a stacked array so as to multiply the inherent effects of temperature on output voltage. A series of ... | 11/13/1990 |
| 4924212 | Temperature threshold detection circuit A threshold temperature detection is made by measuring the reverse saturation current of a transistor subjected to the temperature to be measured. It is shown that, for temperatures close to the ambient temperature, the sensitivity of this detector is ver... | 05/08/1990 |
| 4901060 | Increasing temperature warning device An increasing temperature warning device for protecting an item from high temperature or fire damage comprising a thyristor connected in parallel with a reference voltage source. An audible or visual warning means is connected in series with the thyristor... | 02/13/1990 |
| 4859989 | Security system and signal carrying member thereof A security system comprising a signal-carrying member and a detector for detecting a change in the resistance of the conductive path surrounding a core of the signal-carrying member. The conductive path comprises inner and outer layers of semi-conductive ... | 08/22/1989 |
| 4855711 | Impact detection apparatus An impact detection apparatus (10) includes a device that utilizes multiple sensor elements (11) to determine whether or not a ball lands in or out on a tennis court (12). The sensor positions (13-134) are adjacent to the various boundary lines of the ten... | 08/08/1989 |
| 4692744 | Glazing unit alarm systems A glazing unit alarm system includes a light transmitting electrically conductive coating which extends over at least most of the area of a glazing panel and forms part of an alarm circuit. Changes in the resistance of the coating, occasioned by breakage ... | 09/08/1987 |
| 4384262 | Temperature responsive astable multivibrator In an oscillator circuit responsive to a predetermined temperature and including an astable multivibrator, a switching transistor inverts an output voltage from a first transistor of the multivibrator with a predetermined time delay, and a feedback capaci... | 05/17/1983 |
| 4381503 | Combination type fire detector By the employment of the heat-sensitive thyristor, the conventional rate-of-rise action fire detector having a diaphragm deformable by thermally expanding air in a restrictively vented air chamber is easily converted to a combination type fire detector wi... | 04/26/1983 |
| 4331888 | Temperature detecting apparatus A temperature detecting apparatus having a first transistor connected in diode configuration or a first diode, with its forward current set in certain value. A second transistor has similar electrical characteristics as the first transistor or the first d... | 05/25/1982 |
| 4310837 | Electrical device termination high temperature indicator Temperature indicating apparatus for sensing overheating at a pair of terminals on an electrical power line comprises a neon gas-filled glow tube and a thermistor electrically coupled in series across the terminals, with a resistor electrically coupled in... | 01/12/1982 |
| 4185253 | Temperature sensitive relaxation oscillator A temperature sensitive thyristor is incorporated in a relaxation oscillator to provide active temperature sensing. As temperature decreases, the breakover voltage VBO of the thyristor increases, and when VBO becomes greater than the... | 01/22/1980 |
| 4184126 | Temperature sensitive astable multivibrator A temperature sensitive thyristor is incorporated with an astable multivibrator to provide active temperature sensing. Below the switching temperature Tsw of the thyristor, an oscillatory signal is present at the output of the multivibrator. When the temp... | 01/15/1980 |
| 4181843 | Variable resistance type sensor controlled switch A circuit for controlling the flow of pulsating direct current by causing the on or off state of a gated switch to depend on the resistance of a sensor. The sensor used is of the variable resistance type whose impedance varies in a continuous manner with ... | 01/01/1980 |
| 4137467 | Sensor interface circuit A circuit for interfacing with sensors having a loop current flowing therethrough comprising a current mirror utilizing multiple diode-connected transistors for dividing the loop current into several equal subparts and means connected to said current mirr... | 01/30/1979 |
| 4117527 | Solid state valve thermal protection for HVDC power converters A thermal protection system is provided for a solid state valve that includes at least one representative thyristor having a junction and a heat sink system. The protection system comprises a thermal analog model whose electrical network dynamic electrica... | 09/26/1978 |
| 4102194 | Electronic bin temperature monitor An electronic bin temperature monitor is disclosed which automatically scans a plurality of temperature sensors which are disposed about the interior of a grain storage bin so that the temperatures at various locations in the stored grain can be monitored... | 07/25/1978 |
| 4003038 | Thermal discriminator for sensing variations in the heat exchange properties of a medium A thermal discriminator including two temperature sensitive switching devices having substantially identical electrical characteristics and exhibiting regenerative switching at a power level which is dependent on the temperature sensed by the switching de... | 01/11/1977 |
| 3993983 | Apparatus for sensing variations in the heat exchange properties of a medium The apparatus includes two temperature sensitive switching devices having substantially identical electrical characteristics and exhibiting regenerative switching at a power level which is dependent on the temperature sensed by the switching devices. Both... | 11/23/1976 |
| 3976985 | Alarm circuit suitable for monitoring freezer temperature A solid state electronic alarm circuit including means for sensing a predetermined change in a parameter such as the temperature in a freezer or the like from a predetermined safe limit and means for generating an audible alarm in response thereto.... | 08/24/1976 |
| 3962692 | Solid state temperature responsive switch A silicon solid state temperature responsive switching device having a thermally dependent P-N junction. The thermally dependent P-N junction is at the interface of a thermally invertible region and a non-invertible region. The thermally invertible region... | 06/08/1976 |
