Did You Know...
...that a workman who left the soap mixing machine on too long was responsible for making Ivory Soap? He was so embarrassed by his mistake that he threw the mess in a stream. Imagine his dismay when the evidence of his error floated to the surface! Result: Ivory soap, the soap that floats.
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| Number | Title | Issue Date |
| 7248136 | Tamperproof magnetic switch assembly with universal switch A universal magnetic switching assembly for detecting relative movement between first and second members, the universal switching assembly including, a flux directing device for selectively directing a majority of applied magnetic flux, such that an externally appli... | 07/24/2007 |
| 7218194 | Tamperproof magnetic switch assembly An improved magnetic switching assembly for detecting relative movement between first and second members, the switching assembly including a flux directing device for channeling a majority of applied magnetic flux away from a shiftable body such that an externally a... | 05/15/2007 |
| 7109892 | Device for activating an electronic control unit A device for activating a control unit is proposed. It includes at least one operating element operable by a user as well as analog encoding means assigned to the operating element. To generate an activation signal for a control unit, deactivation means are provided... | 09/19/2006 |
| 7081827 | Power over Ethernet-prioritized active splitter A POE (power over Ethernet)-prioritized active splitter is disclosed for a prioritized network having different priorities such as a network security system that uses an intelligent POE power supply with a prioritized back-up response, allowing a lower cost UPS (uni... | 07/25/2006 |
| 7046013 | Open-circuit failure detection circuit A broken-wire-failure detection circuit connected to a higher circuit includes a power line, a signal line, a ground line, and at least one of the first resistance device connected between the power line and the signal line and the second resistance device connected... | 05/16/2006 |
| 6462653 | System and method of group definition An event detection system has a control element coupled to a plurality of detectors, such as smoke detectors. The control element can be implemented with a programmed processor. The detectors can include a base which removably receives a separable detecto... | 10/08/2002 |
| 6462651 | Gear indicator A gear indicator provides a display to a motorcycle driver of which gear the motorcycle is currently operating in. The gear indicator is used with a gear position switch providing ground signal indication to a motorcycle CPU at a connection with a plurali... | 10/08/2002 |
| 6392541 | Theft-deterrent outdoor lighting A theft-deterrent outdoor lighting fixture having an auger that is connected to the lowermost end of the lighting fixture by means of a one-way clutch mechanism. The one-way clutch mechanist engages or locks the auger relative to the fixture when turned i... | 05/21/2002 |
| 6392552 | Weak cooling/overcooling compensation device for refrigerator The device for compensating a weak cooling/overcooling for a cooling chamber of a refrigerator has a plurality of resistances connected in series between the power and ground and a plurality of switches connected in parallel to the plurality of resistance... | 05/21/2002 |
| 6229439 | System and method of filtering An ambient condition detector includes at least a sensor for a first ambient condition and a second, sensor which is responsive to a second ambient condition not necessarily correlated to the first condition. Control circuitry, coupled to both sensors, pr... | 05/08/2001 |
| 5999094 | Combination telephone and smoke alarm system An in-building telephone distribution system has a multi-conductor telephone distribution cable, starting at the point where the telephone utility lines enter the building and extending from there to each location at which a telephone outlet is wanted, at... | 12/07/1999 |
| 5998985 | Voltage indicator using serial comparison voltage measurement A voltage indicator using a serial or sequential comparison voltage measurement technique. Reference voltages generated by a voltage divider are applied to inputs of a multiplexer which is driven by a counter to select one reference voltage at a time in s... | 12/07/1999 |
| 5912618 | System for detecting the presence of an electrically conductive object, particularly an integrated circuit on a chip card The invention provides a system for detecting the presence of an electrically conductive object, the system comprising a first and a second contact (C1 and C2) intended to be short-circuited by said object, and further comprising a control device for the ... | 06/15/1999 |
| 5896086 | Failure diagnostic apparatus When one of the failure detecting devices disposed at some spots in an electronic appliance detects failure of the electronic appliance, the failure detecting device detecting the failure generates a certain voltage. From the voltage, a certain specific v... | 04/20/1999 |
| 5517175 | Potential adjusting sensor supervision circuit A warning or alarm sensor supervision circuit employs varying voltage levels which may vary at random intervals and to random levels.... | 05/14/1996 |
| 5438474 | Protective sheath There is disclosed a tubular protective sheath for containing a power transmission conduit, the sheath comprising: first and second flexible elements each helically arranged to form respective inner and outer tubular members. The first element is in the f... | 08/01/1995 |
| 5218339 | Arrangement for monitoring a consumer in combination with an internal combustion engine and/or a motor vehicle An arrangement monitors a consumer in combination with an internal combustion engine or motor vehicle especially for monitoring an electric drive which is driven by an output stage in the form of a bridge circuit. Potentials are compared in the area of th... | 06/08/1993 |
| 5168262 | Fire alarm system A fire alarm system employs a neural network for obtaining one or more types of fire related information values. A plurality of detection information values are time-serially collected from plural fire phenomenon detectors. The detection information value... | 12/01/1992 |
| 5017905 | Fire alarm system In a fire alarm system including a plurality of addressable detectors connected to a main circuit extended from a central receiving unit, any alarming detector is discriminated and indicated in accordance with its address on the receiving unit side. In th... | 05/21/1991 |
| 4916432 | Smoke and fire detection system communication A smoke and fire detection system wherein a central controller transmits data to remote transponders on a voltage supply line by pulse code modulation (PCM) of the supply voltage, and the transponders communicate with the controller by pulse width modulat... | 04/10/1990 |
| 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 |
| 4833451 | Individual source identification An individual source identification of several signal providers or pick-ups with closable contacts disposed in a twin-wire signal line, in particular for fire detectors in fire alarm systems. The signal pick-up system allows to distinguish actuation of in... | 05/23/1989 |
| 4831361 | Environmental abnormality alarm apparatus An environmental abnormality alarm apparatus includes a sensor for detecting a fire, gas leakage, a burglar, or the like in a monitoring area, and a signal processor for receiving an output from the sensor and evaluating the output for an alarm determinat... | 05/16/1989 |
| 4745399 | Device for generating an alarm signal in the event of an environmental abnormality A device for generating an alarm signal in the event of an environmental abnormality has multiple sensors, with a multiplier associated with each sensor, an adder, and a comparator. The sensors are disposed in respective sensing volumes, which may be diff... | 05/17/1988 |
| 4742334 | Single-wire loop alarm system A single-wire loop alarm system in which the status of each alarm switch can be determined and which is relatively immune to the effects of noise. False alarms are avoided by incorporating an integrator in the loop potential test circuit; during polling, ... | 05/03/1988 |
| 4725821 | Device for generating an alarm signal A device for generating an alarm signal in the event of an abnormality in the environment of a detector includes a pair of signal/power supply lines, a number of detectors for detecting an abnormality, e.g., fire, gas leakage, or burglary, and an alarm re... | 02/16/1988 |
| 4706271 | Communication lines with terminate and leave capability-DC alarm bridge Apparatus for connecting in series a plurality of communication line pairs, typically direct connected security loops used by alarm companies for monitoring customer's facilities. A bridge with pairs of bridge terminals and switches for connecting bridge ... | 11/10/1987 |
| 4684931 | Capacitive sensing security system Separate signal input circuits respond to intruder disturbances of a capacitive wire sensing grid to generate signal outputs processed to reject signals caused by environmental phenomena with a high degree of statistical probability, by comparison of indi... | 08/04/1987 |
| 4665384 | Signal-transmitting junction unit of hazard alarm system A signal transmitting junction unit for a hazard alarm system includes a signal transmission control unit, a zone line circuit connected to an electric source and having at least one hazard sensor connected thereto and an analog digital convertor; and the... | 05/12/1987 |
| 4651138 | Intruder alarm system An intruder alarm system includes a number of sensors each of which comprises first and second series-connected resistances and a sensor switch connected in parallel with the first resistance. The first resistances of each sensor are different in value fr... | 03/17/1987 |
| 4647913 | Self-diagnostic ultrasonic intrusion detection system A self-diagnostic ultrasonic motion detection system includes an ultrasonic transceiver operative in a transmit mode and in a receive mode. In normal operation, the ultrasonic transceiver in its transmit mode has a characteristic electrical impedance. Pot... | 03/03/1987 |
| 4575711 | Alarm terminal device An alarm terminal device has a lower limit voltage generator for generating as a lower limit voltage an analog signal which is produced from a temperature sensor and which is lower than a first predetermined value, and an upper limit voltage generator for... | 03/11/1986 |
| 4567471 | Monitoring system A monitoring system for a protection loop that has a plurality of switches in series utilizes modules with inexpensive diodes and resistors, and is conveniently and easily added to existing burglar alarm circuits and loops. A monitoring module that includ... | 01/28/1986 |
| 4529970 | Supervision system for monitoring the integrity of a transmission line The integrity of a two-conductor transmission line, over which d-c energizing voltage is supplied to a series of shunt-connected detectors (such as fire and/or smoke detectors) and which line is terminated by an end-of-line capacitor, is monitored and rep... | 07/16/1985 |
| 4524349 | Security system having detector sensing and identification A security system including a plurality of sensor loops, each having a plurality of detectors and associated detector identification devices which upon actuation produce analog detector signals of different amplitude for each detector in such loop to iden... | 06/18/1985 |
| 4523183 | Alarm-fault detecting system A microcomputer controlled circuit arrangement for sensing fire and burglar alarms in the presence of undesired fault conditions, such as opens or shorts, on monitored communication lines. The arrangement includes transistor-resistor sensing circuitry whi... | 06/11/1985 |
| 4506254 | Alarm system with detectors and signaling devices on the same cable pair A single zone system which may use a single cable pair for both detectors of nonstandard conditions and audio/visual alarms. The audio/visual alarms are polarity responsive and in response to an alarm detection, comprising an increase in line current, the... | 03/19/1985 |
| 4506253 | Supervisory and control circuit for alarm system An alarm detection, indication and supervision circuit with reduced power drain during failure of commerical power supply whereby standby batteries may maintain detection capability for an extended period. Separate detection and alarm indication loops are... | 03/19/1985 |
| 4494106 | Pressure monitor A tire pressure monitor which includes a signal generating section and a signal processing section. The signal generating section has a transducer which produces a first signal which is dependent on the tire pressure, and a transistor the collector curren... | 01/15/1985 |
| 4459582 | Local control apparatus for central station alarm system In a central station alarm system the alarm sensors associated with a particular subscriber's premises are monitored by a local control unit associated with those premises and controllable by the subscriber. The local control unit automatically reminds th... | 07/10/1984 |
