Did You Know...
...that it was melting ice cream that inspired the invention of the outboard motor? It was a lovely August day and Ole Evinrude was rowing his boat to his favorite island picnic spot. As he rowed, he watched his ice cream melt and wished he had a faster way to get to the island. At that moment the idea for the outboard motor was born!
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| Number | Title | Issue Date |
| 7602305 | Feedback circuit for a display sign and method A feedback circuit for a display sign has a number of lights. A resistor is coupled in series with the lights. A voltage measuring circuit is coupled to the resistor. ... | 10/13/2009 |
| 7378987 | Traffic control malfunction management unit with per channel red enable A method and apparatus for monitoring for Red Fail faults in a traffic signal control system. Traffic control signals generated by a traffic control unit are grouped into channels. Certain channels are specified for Red Fail testing in which all lights in a given ch... | 05/27/2008 |
| 7315255 | Load status indicator A load status indicator is disclosed wherein a green light-emitting diode of a bi-color light-emitting diode lights up when power is available to but not being used by a monitored device, whereas a red light-emitting diode of the bi-color light-emitting diode lights... | 01/01/2008 |
| 7310049 | Status indicator A status indicator indicates an operating state, including an electrical malfunction, of an electrical load that is located and controlled from locations remote from a monitoring location. ... | 12/18/2007 |
| 7302041 | Method for estimating the remaining life span of an X-ray radiator In a method for estimating the remaining life span of an X-ray radiator that has been installed in an X-ray apparatus and is operational, under specified test conditions and at time intervals, a measurement value that is indicative for the remaining life span of the... | 11/27/2007 |
| 7259685 | Landing light fault annunciator A helicopter of the type having an electrical system, a landing light, a master switch and a power supply of between about 18-32 V for operating the electrical system when the master switch is in an on position also includes a landing light fault detector. The landi... | 08/21/2007 |
| 7250872 | Method and device for testing at least one LED strip A test device for at least one LED strip contains: a voltage source, by way of which a cold test voltage or a warm test voltage can be applied to a parallel circuit formed of a test resistor and the LED strip, and an evaluation unit which records the cold test curre... | 07/31/2007 |
| 7164359 | Networked RF tag for tracking freight The invention disclosed provides a method, system, and associated tag for detection and tracking of inanimate and animate objects. The novel method broadly comprises the steps of: a) attaching a low radio frequency detection tag to each of the objects, each tag comp... | 01/16/2007 |
| 7123136 | Indicator system having multiple LEDs An indicator system having light emitting diode (LED) indicators and an open-circuit detecting circuit. In the open-circuit detecting circuit, a voltage at a point between a constant current source and the first resistor is applied to a base of a transistor. The sec... | 10/17/2006 |
| 7120560 | Lamp monitoring and control system and method A system and method for remotely monitoring and/or controlling an apparatus and specifically for remotely monitoring and/or controlling street lamps. The lamp monitoring and control system comprises lamp monitoring and control units, each coupled to a respective lam... | 10/10/2006 |
| 7113893 | Lamp monitoring and control unit and method A unit and method for remotely monitoring and/or controlling an apparatus and specifically for remotely monitoring and/or controlling street lamps. The lamp monitoring and control unit comprises a processing and sensing unit for sensing at least one lamp parameter o... | 09/26/2006 |
| 7109886 | Traffic control malfunction management unit with co-channel monitoring A method and apparatus for monitoring for Red Fail faults in a traffic signal control system. Traffic control signals generated by a traffic control unit are grouped into channels. A parent-child relationship is established between some channels. When testing for a ... | 09/19/2006 |
| 7103511 | Wireless communication networks for providing remote monitoring of devices Wireless communication networks for monitoring and controlling a plurality of remote devices are provided. Briefly, one embodiment of a wireless communication network may comprise a plurality of wireless transceivers having unique identifiers. Each of the plurality ... | 09/05/2006 |
| 7102540 | Remote access of an airport airfield lighting system Remote monitor and control of an airfield lighting system. A processing system local to the airport is provided in communication with the airfield lighting system for monitor and control thereof, the airfield lighting system producing airfield information for proces... | 09/05/2006 |
| 7071699 | Non-load driven fault monitor for electrical circuits A fault monitor for the load portion of an electrical circuit may be connected to an existing circuit by a single connection, and may detect flaws within the load portion of the circuit through the detection of changes in voltage through a resistor, caused by change... | 07/04/2006 |
| 7049769 | Circuit arrangement and method for an illumination device having settable color and brightness It is intended to be possible to use a respective setting apparatus (E1, E2) to set the color and the brightness of an illumination device separately. Light sources having three different colors are operated for this purpose. Only one first power suppl... | 05/23/2006 |
| 7044623 | Thru-hull light A thru-hull fitting assembly is connected to the forward end of a hollow lamp housing for mounting to a hole in the hull of a vessel in a water-tight fashion. An HID or other lamp is mounted in the lamp housing and is surrounded by a reflector which may have an oute... | 05/16/2006 |
| 7046132 | Lamp monitor and method for operating a lamp monitor A lamp monitor for a bus or other motor vehicle has a processor, a current sensor, a memory and a display for monitoring the current through the lamps. In program mode, the processor samples the current passing through the warming lamps and calculates an operating r... | 05/16/2006 |
| 7023353 | Warning device status circuit including a status output device A warning device including a status and function indicator circuit for indicating the status and function of the warning device. In a visual warning device such as a strobe light, the status and function indicator circuit includes a status output device such as an L... | 04/04/2006 |
| 7019474 | Constant current regulator using IGBT's with simplified timing A constant-current AC regulator comprises a switching network including two pulse-width modulator (PWM) transistors and two half-cycle transistors, a PWM transistor driver circuit, a main power transformer with two primary windings, a current sensing network, and an... | 03/28/2006 |
| 7015652 | Electronic ballast having end of lamp life, overheating, and shut down protections, and reignition and multiple striking capabilities An electronic ballast having end of lamp life and overheating protection, and automatic reignition and multiple striking capabilities includes AC/DC rectifier, PFC/boost, inverter, and ballast protection and control circuits. The ballast protection and control circu... | 03/21/2006 |
| 7002453 | Remote lamp status display via fiber optic system A method and apparatus are provided for remotely monitoring the status of a variety of illumination devices. A fiber optic cable coupled to a light fixture transmits a light display. Based on the light received, the status of the light is determined. The status is d... | 02/21/2006 |
| 6982648 | Lighting or indicating light unit for a vehicle and lighting or indicating system equipped with at least one such light unit A light unit or indicating device for a vehicle (.e.g., a vehicle lighting unit, a vehicle indicating unit, reversing radars and other systems) has a shell, a light contained in the shell, and an electronics card mechanically associated with the shell. The electroni... | 01/03/2006 |
| 6975967 | CO/Oincubator predictive failure for COand Osensors Methods and apparatus for a predictive warning system of the failure of O2 and CO2 sensors, which are particularly suited for an incubator environment are, disclosed. An application of the predictive failure of O2 and CO2 ... | 12/13/2005 |
| 6963170 | Lamp monitor and lamp The present invention discloses a lamp comprising a lamp housing mounting an electrically driven light and a monitor circuit, the housing having power supply terminals for connection of the light to a power supply and the monitor being connected to the light such as... | 11/08/2005 |
| 6956377 | Disconnection detection apparatus A detection part (B), of a disconnection detection apparatus (1A), detects an open destruction of a detection resistor. An emitter of a transistor (Q5) is connected to an upstream end of a detection resistor (R1) through a diode (connected forwa... | 10/18/2005 |
| 6930613 | Electrical instruments circuits A device representing a simple means of multiplying the functionality of wiring in point to point control circuits such that fault tolerant, fault reporting circuits can be constructed with less wire. The circuit can employ the wiring on a continuous basis by the us... | 08/16/2005 |
| 6922136 | Security method for vehicle safe driving support system A security method for a vehicle safe driving system provides drivers information for safe driving, that is, when a sensor does not detect any danger when there is a danger on the road, when there are some limits in the system operations, or when a portion of the sys... | 07/26/2005 |
| 6909159 | Method and apparatus to make a semiconductor chip susceptible to radiation failure Methods and apparatus are provided for reducing the overall radiation hardness of a semiconductor chip. A radiation detector and a failure memory are provided. A disable signal or signals is produced by the failure memory. The disable signal is a required input to a... | 06/21/2005 |
| 6867703 | Safety-protection circuit In the process of drilling a concrete in a building, many times contact and damage can accidentally be made with existing electrical conduit and the wires inside, or plumbing pipes. This damage can be avoided with a device which can indicate a grounded metal, such a... | 03/15/2005 |
| 6788195 | Light monitor A monitor for a light circuit comprising a power source, a light being monitored, and a sense resistor. A first voltage amplifier circuit connected to the light circuit has a first output signal representing the voltage across the sense resistor. A second voltage am... | 09/07/2004 |
| 6774785 | Front panel light system for an electronic instrument which indicates the operating condition of the front panel lights and selected portions of the instrument The system tests front panel lights, such as LEDs, on an electronic instrument, the front panel lights being normally used to indicate the status of selected output conditions of the instrument. The system also uses the LEDs to communicate additional information con... | 08/10/2004 |
| 6720883 | Warning device status circuit including a status output device A warning device including a status and function indicator circuit for indicating the status and function of the warning device. In a visual warning device such as a strobe light, the status and function indicator circuit includes a status output device such as an L... | 04/13/2004 |
| 6603302 | Circuit testers A circuit tester (1) for testing circuit integrity in a series-wired string of Christmas fairy lights powered by domestic mains electricity. The tester comprises or includes a housing; a probe including a pair of matching current sensors (1,2) protruding ... | 08/05/2003 |
| 6583731 | Fault detection for traffic light systems using electronic lighting elements An indicator controller (18), an optical assembly (10) having the indicator controller (10), a traffic light system that comprises at least one of the optical assembly (10) and a method for fault indication by the indicator controller (10) is disclosed. A... | 06/24/2003 |
| 6573840 | Supervision and control of airport lighting and ground movements In an arrangement for supervising and controlling field light units (20) at an airport, a regulator provided with a monitoring unit for power supply and for monitoring the light units is arranged individually for each light unit (18,20) to regulate the li... | 06/03/2003 |
| 6556017 | Deteriorated filament detection A Method and an arrangement providing detection of deteriorated lamp filaments (3) in a lamp circuit (11) fed by constant current, in particular for a lamp supervision system for airfield lights. A change in a constant current fed through a lamp circuit (... | 04/29/2003 |
| 6515435 | Pixel mirror based stage lighting system A lighting system with a digital micromirror device which forms a digital gobo system that is controllable on a pixel level. The device includes a number of sensitive electronic elements. The device is controlled by two different controllers: a digital si... | 02/04/2003 |
| 6504485 | Monitoring apparatus and control apparatus for traffic signal lights Monitoring and control apparatus for fail-safe monitoring for normal operation of traffic signal lights provided at an intersection or the like where a plurality of roads intersect. The illumination conditions of respective signal lights are detected usin... | 01/07/2003 |
| 6456091 | Power line conditioner with voltage and current amplitude tracking An apparatus and a method using a power line conditioner having a conventional grounded plug disposed at one end of a short three-wire cord and a housing disposed at the opposite end for providing surge protection, voltage and current amplitude monitoring... | 09/24/2002 |
