Quotables
"Rail travel at high speeds is not possible because passengers, unable to breathe, would die of asphyxia."
Dionysius Lardner, Professor of Natural Philosophy and Astronomy at University College, London ; 1830
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| Number | Title | Issue Date |
| 7781920 | Push-on/push-off power-switching circuit An electrical power-switching circuit controls power to an electronic device. In some embodiments, the circuit consists of only transistors, resistors, and capacitors, making it small, low cost, and functional over a wide range of supply voltages. The circuit may be... | 08/24/2010 |
| 7441727 | Highway-rail grade crossing controller with out of service mode An electronic controller for a highway-railroad grade crossing warning system is coupled to an approach circuit and to an island circuit and activates a warning device when a train is present in either of the approach or the island circuits. The controller has a dis... | 10/28/2008 |
| 7391133 | Hybrid switch An electrical switching topology for a hybrid switch provides extremely low losses in both cryogenic and non-cryogenic electronic systems. In this switch having switch modules connected in parallel, switching losses in a first module are separated from conduction lo... | 06/24/2008 |
| 7349764 | Watering warning device A watering warning device (1) for determining watering intervals for at least one plant to be monitored, having at least one moisture content sensor (2), a timer (6) and an evaluation unit (3) is described. The evaluation unit (3) ... | 03/25/2008 |
| 7333345 | Combination current sensor and relay A combination current sensor and relay has an improved housing. In one aspect, the housing includes light emitting diodes on an upper surface that indicate open circuit and short circuit conditions. In another aspect, the housing includes a securement structure for ... | 02/19/2008 |
| 7274226 | Power source voltage monitoring circuit for self-monitoring its power source voltage A power source voltage monitoring circuit for monitoring self power source voltage comprises a reference voltage circuit which is supplied with a power source voltage, and generates and outputs a reference voltage in accordance with the power source voltage, a compa... | 09/25/2007 |
| 7239047 | Switch device incorporating capacitive oscillator A switch (10) comprises a face plate (16) and a single switch sensing oscillator (18) responsive to a switch activating presence. The oscillator (18) has a resistive component (36) connected to a sensing plate (38) which act... | 07/03/2007 |
| 7231262 | Apparatus for monitoring and controlling use of equipment Apparatus is provided for controlling and limiting the amount of time that a television, computer game, or other electrical appliance can be utilized. The apparatus is inserted in the electrical cord leading to the electrical appliance and is programmable to limit t... | 06/12/2007 |
| 7221106 | Cordset based appliance controller An apparatus and method for distributed control of an electrical appliance having a plug and a load and two power carrying conductors connecting the plug to the load, comprising locating power control elements completely within the plug, connecting interface element... | 05/22/2007 |
| 7183672 | MOSFET based, high voltage, electronic relays for AC power switching and inductive loads A MOSFET based, high voltage, high current AC electronic relay includes a MOSFET switching circuit selectively switching between switch conducting and switch isolation. The relay also includes a transformer coupled to the MOSFET switching circuit, the transformer se... | 02/27/2007 |
| 7173882 | Methods and systems for performing horological functions using time cells A simple electronic horological device, termed a time cell, is presented with associated methods, systems, and computer program products. A time cell has an insulated, charge storage element that receives an electrostatic charge through its insulating medium, i.e. i... | 02/06/2007 |
| 7170403 | Tamper switch structure and security sensor including the tamper switch structure A tamper switch body is disposed in a housing of a PIR sensor. A tamper opening is formed at a position opposite a switch actuating member of the tamper switch body in a base plate of the PIR sensor. An elastic switch member is mounted in the tamper opening. The ela... | 01/30/2007 |
| 7154380 | Power distribution and timing device A power distribution and timing device (PDTD) for controlling power supply to controlled device(s). This invention includes: an outlet; an alarm clock; a backup battery; a keyboard; a tamper switch; a display for showing day, time, modes of operation, programming st... | 12/26/2006 |
| 7089915 | Method and device for controlling an electromagnetic consumer A device and a method are described for controlling an electromagnetic user, especially a magnetic valve for influencing the fuel quantity to be injected into an internal combustion engine. At least one switching time of the user is taken into consideration in the c... | 08/15/2006 |
| 7081715 | Method of providing break-in conditioning for a bi-level illumination system High level and low level illuminating use of lamps in an office stairwell of the nature requiring a lamp break-in period of conditioning, wherein normally the former level is used during work hours and the latter level during off-hours, in which high level illuminat... | 07/25/2006 |
| 7010436 | Method and device for prediction of a zero-crossing alternating current An apparatus (14) for detecting a zero-crossing of an alternating current after occurrence of a fault in a current path (2) for determining a suitable time for opening an electric switching device (2) arranged in the current path for breaking th... | 03/07/2006 |
| 7010395 | PC-programmed irrigation control system A free-standing field irrigation controller is selectively programmed by a personal computer over a radio link. The computer is equipped with software that displays a screen with seven horizontal time bands representing one day each, arranged vertically to display o... | 03/07/2006 |
| 7000278 | Method and apparatus for end of cycle signal for laundry appliance A method is disclosed for producing an end of cycle for a laundry appliance having a drive motor, a timer motor, and at least one water valve. The method includes determining that the drive motor was previously running and is presently turned off, determining that t... | 02/21/2006 |
| 6750568 | Remote controlled auxiliary lock With an auxiliary lock operated by a built-in battery, it is desired to prevent the door from being kept locked even if the battery dies. The auxiliary lock body is provided with first and second voltage detecting means for detecting that the voltage of the battery ... | 06/15/2004 |
| 6688329 | Water feeder controller for boiler A water feeder controller for a boiler monitors a low water cutoff sensor in a boiler and uses a feed timer to feed water to the boiler for a predetermined feed period of time. The feed timer brings the water level in the boiler well above the low water c... | 02/10/2004 |
| 6670727 | Timed switch A timed switch has a housing member, an output connecting leg connected to an appliance, and a circuit board including both a timing device and an electromagnet. The output connecting leg is electrically connected to the circuit board, and has a front end... | 12/30/2003 |
| 6650030 | Electrical device having a power supply unit, a transformer power supply unit and a control card for an electrical device In an electrical device for controlling functional units and processing data, for connection to an external data network communicating signals, and for switching between quiescent and active states, the improvement includes a control unit for controlling ... | 11/18/2003 |
| 6548996 | Optimized on/off control circuit An on/off control circuit is provided that controls the application of power to a device. The effectiveness of the on/off control circuit is optimized with regard to cost, power consumption, component life, and utility. An R-C circuit is used to provide a... | 04/15/2003 |
| 6533451 | Underwater electromechanical timer An underwater electromechanical timer comprises a motor-driven timer assembly which includes a threaded member that engages an endless screw driven in rotation by means of a motor. Time programming of the timer is accomplished via presetting a length of s... | 03/18/2003 |
| 6519208 | Locking timer and outlet cover A locking timer assembly for controlling access time for a television, video game, or computer, employs a lockable enclosure box that attaches onto a wall outlet in place of the usual face plate. The volume inside the box encloses a standard 24-hour on-of... | 02/11/2003 |
| 6483780 | Security system using modular timers Electrical timer modules that interact with one another so as to effect random operation of a plurality of electrical devices, creating the appearance that the devices are not operated automatically. The timer modules include circuitry that allows them to... | 11/19/2002 |
| 6388854 | Load balancing and distributing switch-on control for a circuit breaker, an appliance, a device, or an apparatus The present invention is a load balancing and distributing switch-on/turn-on control for a circuit breaker, an appliance, a device, or an apparatus wherein each switch-on device on a circuit breaker, appliance, device, or apparatus generates and provides ... | 05/14/2002 |
| 6307812 | Security system using modular timers Electrical timer modules that interact with one another so as to effect random operation of a plurality of electrical devices, creating the appearance that the devices are not operated automatically. The timer modules include circuitry that allows them to... | 10/23/2001 |
| 6268775 | Dual capacitor oscillator circuit An electronic delay circuit (10) useful for the delayed initiation of detonators illustrates several novel features that may be combined, including a novel oscillator (34), a programmable timer circuit (32) and a run control circuit (46). The oscillator (... | 07/31/2001 |
| 6167000 | Multiple timer display A multiple timer device includes a DC power supply circuit, a central processing unit, a slide switch, a function key set, and a liquid crystal multiple display. The slide switch serves to select an operating mode according to settings programmed by press... | 12/26/2000 |
| 6040640 | Direct voltage back-up system at a power supply outlet A back-up device includes at least one back-up battery, in particular a rechargeable battery which can be charged via the power supply, and a control unit. The control unit connects the back-up battery when the actual value of the DC voltage is less than ... | 03/21/2000 |
| 6034449 | Load drive circuit The invention relates to a load drive circuit wherein an emergency shutdown switch for forcible interruption and a normal shutdown switch for normal current control are disposed in series in a load power supply circuit. An emergency shutdown switch (SW | 03/07/2000 |
| 6028372 | Daily start operation for remote vehicle starters A control system for a remote vehicle starter which allows a remote vehicle starter to be activated at a preset time for a specific number of days after setting. According to the control operation, a setting sequence is detected. When the setting sequence... | 02/22/2000 |
| 6025655 | Control system, particularly for a motor vehicle A control system, particularly for a motor vehicle, having at least one control device which, in order to produce control parameters, is connected with a timer circuit for the production of a time parameter. In order to provide a control system in which a... | 02/15/2000 |
| 6020659 | Ramping electronic switch system The present invention relates to an electronic switch system for controlling AC power to a load. The switch has ON, OFF and RAMP down modes that can be selected by means of momentary touch switches. When put into the RAMP down mode, the power to the load ... | 02/01/2000 |
| 6011329 | Electrical circuit cycling controller A time delay power controller has a power input for receiving alternating electrical power from an external source; a timer activation device connected in parallel to a one or more timers, each timer having an associated delay time and an output for deliv... | 01/04/2000 |
| 5986361 | Automated electronically controlled microsprayer An electronically controlled micro-dispensing apparatus (10 or 210) is described. The apparatus includes a liquid storage container (12), a propellant container (16), a control circuit (34 or 42) and an ejector (28). In a second embodiment, the liquid and... | 11/16/1999 |
| 5959940 | Controller timer A timer controls equipment with electrical drivers, in which timer is combined an electromechanical device and an electronic circuit. The timer includes an electromechanical device (1) in conjunction with an electronic circuit (2). The electromechanical d... | 09/28/1999 |
| 5955796 | Programmable wall switch actuator/timer A self-contained programmable wall switch actuator/timer unit can easily be mounted directly onto the outside of the face plate of a standard wall switch. This actuator/timer unit can be programmed to operate the lever of the wall switch in accordance wit... | 09/21/1999 |
| 5949148 | D.C. power distribution and fuse panel unit A D.C. power distribution and fuse panel unit facilitates installation and trouble shooting of vehicle auxiliary electrical equipment such as two-way radios, sirens, computer mobile data terminals, and mobile phones in police and other emergency vehicles.... | 09/07/1999 |
