"I watched his countenance closely, to see if he was not deranged ... and I was assured by other senators after he left the room that they had no confidence in it."
U.S. Senator Smith of Indiana ; After seeing Samuel Morse demonstrate the telegraph.
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| Number | Title | Issue Date |
| 5856783 | Pump control system A pump control system which can distinguish between water and oil so that a pump can be controlled to pump water and deactivated before oil is pumped. Sensing is accomplished by a pair of capacitive sensors, one located above the other in a vessel in whic... | 01/05/1999 |
| 5847663 | Multi purpose communications system for intelligent roadways based on time-companded, spoken advisories Real-time, multi-purpose advisories that inform users of roadways on upcoming situations, require frequent gathering and interpreting of information gleaned from road systems, and then feedingback information by means of repeated, spoken descriptives pert... | 12/08/1998 |
| 5841367 | Electronic equipment for prevention of collisions between vehicles An electronic encoder/transmitter encodes acoustic and visual signal pulses for transmission to other vehicles. A device transmits alarm signals instantaneously when the vehicle self collides, becomes blocked in the road, or when the vehicle is on a colli... | 11/24/1998 |
| 5838240 | Wet diaper detector A wet diaper detector comprises an elongated strip of material sized to be positioned in a diaper with a portion of the strip residing in a region of the diaper subject to wetness and an end of the strip protruding from the diaper at the upper rear or fro... | 11/17/1998 |
| 5831533 | Entering/leaving control system An entering/leaving control system for a user who is carrying a wireless medium which stores at least collating information and has a wireless communication function. The entering/leaving control system includes a receiving unit provided near a gate for e... | 11/03/1998 |
| 5828319 | Motor vehicle display system and ranging device A vehicle display system has a stationary detector and an indicator, which form a stationary vehicle detection apparatus being operative to produce an indicator signal which is indicative of the vehicle being stationary. The vehicle display system also ha... | 10/27/1998 |
| 5825285 | Portable transmitter for tire air pressure warning apparatus A tire air warning apparatus attached to a wheel of the vehicle is disclosed. The apparatus includes a sensor which detects tire air pressure lower than a predetermined value and a transmitter which outputs a signal in accordance with an instruction from ... | 10/20/1998 |
| 5812070 | Shared vehicle rental system A shared vehicle rental system has a plurality of motor vehicles, a parking area for a plurality of users to rent motor vehicles therefrom and to return motor vehicles thereto, and a control center for supervising the motor vehicles. The shared vehicle re... | 09/22/1998 |
| 5781118 | Self-contained breathing apparatus having a personal alert safety system integrated therewith The present invention provides a self-contained breathing apparatus ("SCBA") having a personal alert safety system ("PASS") fully integrated therewith. The PASS is structurally integrated with the SCBA such that it is protected from damage by both the air... | 07/14/1998 |
| 5751213 | Theft detection alarm element for avoiding false alarms An alarm element forming part of an alarm system and constructed to receive a magnetic alternating field having the frequency F and transmitted by a transmitter (2). The alarm element retransmits a magnetic alternating field without an energy addition, th... | 05/12/1998 |
| 5748083 | Computer asset protection apparatus and method An advanced asset protection system (APS) includes a small, battery-powered, Asset Protection Device (APD) having circuits for detecting motion and tampering and intrusion of a protected asset or the APD itself. The APD includes a an internal wireless bat... | 05/05/1998 |
| 5717389 | Method of determining toll charges for vehicles using a traffic route In the proposed method of determining toll charges for vehicles using a traffic route, a radiolocation system is used to compare a vehicle's geographical location continuously with the geographical location of virtual collection points. The virtual collec... | 02/10/1998 |
| 5710541 | Smoke/fire detector A smoke/fire detector assembly having a base section and a removable sensor section. The base section includes a plurality of electrical contacts and the sensor section includes a corresponding plurality of electrical contacts. Each one of the sensor sect... | 01/20/1998 |
| 5708512 | Facsimile apparatus and recording method therein A facsimile apparatus receives image information and recording the image information by use of a laser-beam printer. In a case where the document size of the received image information is larger than the size of the recording paper, the recording resoluti... | 01/13/1998 |
| 5691695 | Vehicle information display on steering wheel surface A vehicle steering wheel is provided with a thin reconfigurable display such as an LED, an LCD, an electro-luminescent display, or other types of reconfigurable thin display. Vehicle instrument information such as speedometer, fuel level, vehicle temperat... | 11/25/1997 |
| 5689232 | Vehicle signalling device A bicycle signalling device (1) has flexible arms (4) carrying lamps (5). The arms (4) are mounted on a holder (2) having spring clamps (3) for snap engagement with the handlebars of a bicycle. A battery within the holder (2) powers the lamps (5) operable... | 11/18/1997 |
| 5686883 | Vehicle anti-theft system A vehicle anti-theft system in which, only when the ID signal is obtained from a right ignition key and when the vehicle anti-theft function is halted by the failure of an anti-theft circuit or theft detection unit itself, the start-up of the engine is pe... | 11/11/1997 |
| 5686881 | Automatic phone light The present invention relates to a first automatic phone light system (110) functioning to turn a light (14) ON, in response to a telephone call received by a telephone line (16A), for a preset period of time predetermined by a timer (24) when a photocell... | 11/11/1997 |
| 5684452 | Multi-purposes warning device A multi-purposes warning device includes a battery container, a tube threadedly engaged to an end of the battery container and a flash bulb disposed in the tube, a bracket pivotally engaged to the tube and a flashlight head pivotally engaged to the bracke... | 11/04/1997 |
| 5684450 | Electricity distribution and/or power transmission network and filter for telecommunication over power lines A power transmission network which includes an input for the input of telecommunication signals having carrier frequencies greater than 1 MHz onto the network, and removing similar speech and/or data signals from the network. Preferably a network conditio... | 11/04/1997 |
| 5682145 | Toxic gas detector with a time measurement sensor The present invention is a carbon monoxide or other toxic gas detector. The detector of the present invention detects the presence of carbon monoxide in an air sample by measuring the time required for the sensor circuitry to charge. Such a measurement te... | 10/28/1997 |
| 5682138 | Illumination system for a semi-trailer or the like An illumination system for illuminating the rear wheel assembly of a wheeled vehicle for a predetermined period of time in response to actuation of a turn signal. An auxiliary light and corresponding circuit are provided on the underside of a semi-trailer... | 10/28/1997 |
| 5680096 | Process and apparatus for monitoring a vehicle interior A monitoring of a vehicle interior is effected by detecting sound waves in a vehicle interior, either from an incursion source or as reflected as echo waves and decomposing the electrical signals representing those detected sound waves into measurement ve... | 10/21/1997 |
| 5680094 | Key sensor alarm for door locks A key reminder device for use in combination with a key lock mechanism having an adjustable timer with a predetermined timer interval electrically coupled to a replaced power supply. The timer is energized upon detection of a conventional key inserted int... | 10/21/1997 |
| 5673028 | Electronic component failure indicator An electronic component failure indicator for clearly visably indicating on the surface of an electronic component to be tested a self sustaining indication of the functional operational status of the component. It is used for easily locating and identify... | 09/30/1997 |
| 5673018 | Transponder system for reporting the distance traveled by a wheeled vehicle An RF transponder transmits information on the distance traveled by a wheeled vehicle in response to an interrogation signal from an exciter/receiver. A rotation sensor, preferably an odometer/shaft encoder combination that is mounted on a vehicle wheel, ... | 09/30/1997 |
| 5668534 | Containment failure detection device and method A device and method for detecting a containment failure. The device has a gas supply means (18) for providing a gas to a containment failure volume (16, 60) and for maintaining a constant gas pressure in the containment failure volume. The device also has... | 09/16/1997 |
| 5668540 | Detection device for data relating to the passage of vehicles on a road A detection device for data relating to the passage of vehicles over a road. The detection device is to be placed in a groove provided in the upper portion of the road and comprises a first profiled strip provided with an upper cavity in a U-shape, and a ... | 09/16/1997 |
| 5663711 | Power failure alarm A combination electrical connector and power failure signal device, comprising a generally box-like housing having a front, a back and a chamber, a male electrical plug on the back, a female electrical plug on the front, an electrical circuit in the housi... | 09/02/1997 |
| 5659289 | Control and interface system for emergency vehicles An interface system for use in a motor vehicle to be converted to a police or emergency vehicle includes a switch panel array operating an array of relays which in turn controls a lamp unit such as a conventional light bar. A video camera and VCR are mutu... | 08/19/1997 |
| 5659306 | Expired parking meter indicator An expired parking meter indicator with electronic components which detect the presence of a vehicle in the parking place. When a vehicle pulls into a parking place a signal is received by the parking meter which after a grace period emits a signal if no ... | 08/19/1997 |
| 5652577 | Device and method for passively activating inductive loop sensor A device and method for passively activating an inductive loop vehicle sensor. The sensor has an inductive loop in a roadway that produces an electro-magnetic field and utilizes the changes caused by the interaction of a detectable vehicle with the field ... | 07/29/1997 |
| 5650771 | Electrical socket with monitoring unit for monitoring operating conditions An electrical socket includes at least one socket receptacle adapted to connect electrically an electrical appliance to a line power source, and a monitoring unit connected electrically across the socket receptacle for monitoring operating conditions, suc... | 07/22/1997 |
| 5650765 | Automotive rear safety detection system An automotive rear detection system which assists a driver by informing whether an obstacle is present when the vehicle is in a reverse motion. The alarm is activated by transmitting an audible noise to warn the driver. The signals are monitored by detect... | 07/22/1997 |
| 5650762 | Fire alarm system A transmitter for use with a fire alarm system controls the monitoring of devices to be controlled based on a control command transmitted from a receiving section such as a fire receiver. With this transmitter, even if there is a short circuit in control ... | 07/22/1997 |
| 5648751 | Drug preparation tray A drug tray is for containing all drugs prescribed for each patient, and includes a display unit for providing an indication of the drugs which have been placed in the tray. The display unit has a signal transmitter/receiver, drug type indicating switches... | 07/15/1997 |
| 5644290 | Blackout control system An improved blackout control system located within the passenger compartment allows the driver to alter the normal and emergency lighting features of the vehicle. The blackout control system comprises an illuminated control panel unit modified by harness ... | 07/01/1997 |
| 5642099 | Light scattering type smoke detector A light scattering type smoke detector arranged such that even if the range in which light from an LED is emitted has a dispersion, a labyrinth member 90 in the light emitting range has no edge or only a predetermined labyrinth member exist therein. The l... | 06/24/1997 |
| 5638051 | Method and apparatus for monitoring an electrical drive A method for monitoring an electrical drive, in particular a drive of an armature, having electric supply lines being extended through a switchgear plug-in unit associated with the drive and being connected at the plug-in unit to a measurement and evaluat... | 06/10/1997 |
| 5635921 | Emergency vehicle radio transmission system An apparatus for, and method of, providing an emergency signal over preselected frequencies of various radio bands such that the operators of nearby motor vehicles, or other emergency vehicles, or the like, may respond accordingly. The preselected frequen... | 06/03/1997 |