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| Number | Title | Issue Date |
| 5128670 | Roadway alert apparatus An apparatus is arranged wherein a signal device is positioned in a confronting relationship for visual observation by a vehicle within a primary roadway adjacent to a secondary roadway, wherein the signal device is operative upon breaking of a photo-cell... | 07/07/1992 |
| 5101200 | Fast lane credit card A toll paying system for use with a vehicle passing through a fast lane, having a toll booth. The toll paying system comprises detection means, class determining means, a wallboard, and a vehicle having both a first processor and a transmitter; a toll boo... | 03/31/1992 |
| 5083200 | Method for identifying objects in motion, in particular vehicles, and systems for its implementation A method for identifying an object in motion, in particular a vehicle, includes several steps whenever the object is moving inside a predetermined identification zone following a predetermined movement axis. The steps are periodically acquiring images of ... | 01/21/1992 |
| 5066950 | Traffic safety monitoring apparatus A traffic monitoring system comprising apparatus for establishing a pair of precisely spaced radiation beams in association with a thoroughfare, whereby passage of a vehicle along the thoroughfare interrupts the radiation beams, apparatus for sending inte... | 11/19/1991 |
| 5053868 | Video monitoring system for auto drive-through fast food restaurants Apparatus is provided for the video intercommunication between a drive-through customer at the outdoor ordering station and the indoor order-taking clerk at the order processing station of a fast food restaurant. A first video camera is located at the foo... | 10/01/1991 |
| 5047748 | Dock monitoring system A remote monitoring system for a multi-position loading dock facility having a vehicle restraint lock at each loading/unloading position is disclosed. The monitoring system includes a data processor, and a keyboard and monitor associated therewith, which ... | 09/10/1991 |
| 5039217 | Optical transceiver apparatus for detecting distance between two cars An apparatus for detecting the distance between one's car and the car ahead, together with the angle between the axes of the two cars. The apparatus has a pair of driving optical systems disposed at a predetermined distance from each other, each driving o... | 08/13/1991 |
| 5005004 | Light activated vehicle sensor with flashing light and pulsing sound alarm An audible warning tone and a flashing optical signal are generated by a personal portable signalling apparatus when it detects the approach of a lighted moving vehicle. The flashing optical signal also alerts the operator of the moving vehicle of the pre... | 04/02/1991 |
| 4998093 | Portable personal electronic perimeter alarm An extremely reliable, easily portable perimeter alarm system. It is comprised of a light beam controlled radio transmitter and personal warning devices capable of individually warning preoccupied highway workers of the imminent danger present when an err... | 03/05/1991 |
| 4970389 | Vehicle identification system Vehicle (4) are automatically identified using a specially constructed windshield (8) which carries identifying indicia (10). The window is a layered construction, similar to safety glass, and includes an intermediate layer (20) sandwiched between inner a... | 11/13/1990 |
| 4947353 | Automatic vehicle detecting system An automatic vehicle detection system within a toll collecting system has a scanning laser unit positioned on one side of a roadway, a vertical photoelectric detector on the opposite side of the roadway and a treadle extending across the roadway. The lase... | 08/07/1990 |
| 4929942 | Lighting peg A lighting peg having a solar cell and a battery installed in a casing including a number of sensors each including a photoelectric conversion element mounted on a side surface of the casing, a differential circuit provided on the subsequent stage of the ... | 05/29/1990 |
| 4916429 | Overheight detector system for drive through restaurant A detector system for detecting overheight vehicles in a drive through restaurant is employed to prevent damage to an overhanging roof or canopy by signalling both the vehicle driver and a restaurant attendant simultaneously when an overheight vehicle is ... | 04/10/1990 |
| 4904998 | Lighting peg with variable pulsation rate In a lighting peg with a variable pulsation rate including a square outer casing provided with a solar cell and a battery and adapted to be installed at an intersection of two roads, light emitting diodes and a photoelectric conversion element are provide... | 02/27/1990 |
| 4855717 | Security device for conveying systems with unmanned vehicles A security device for monitoring unmanned vehicles within an area, the device comprising at least two oppositely directed light barriers associated with the area. Each light barrier includes a light emitter, a reflector, and a light receiver. The light ba... | 08/08/1989 |
| 4808997 | Photoelectric vehicle position indicating device for use in parking and otherwise positioning vehicles The position indicating device is employed to assist in parking and otherwise positioning a vehicle on a supporting surface. A photoelectric control unit is mounted on an overhead structure spaced above the supporting surface and has a beam emitting devic... | 02/28/1989 |
| 4747610 | Pallet sensor for lift truck A pallet sensing system, for a low lift pallet-type fork truck having load wheels extendible downwardly away from and retractable upwardly toward the forks to raise and lower the forks, is characterized by sensors for detecting proper alignment of the for... | 05/31/1988 |
| 4735289 | Dispensing apparatus and deposit apparatus for drive up machines A dispensing apparatus is provided for use from an open window of a stationary vehicle. The position of the open window is optically or acoustically sensed and a data input and dispensing component is moved by a carriage mechanism in response to the sense... | 04/05/1988 |
| 4653002 | Navigation system for unmanned vehicles A system for effecting transport over a surface among a plurality of terminals, including at least one transport vehicle movable over the surface, light barriers dividing the surface into a plurality of contiguous elemental zones and sensing the passage o... | 03/24/1987 |
| 4613103 | Crossing bell and flasher A model railroad crossing bell and flasher employs spaced photocell detectors along the model railroad track. A comparator receives the photocell detector output signals and upon detecting a train shadow provides power to a first oscillator which actuates... | 09/23/1986 |
| 4549182 | System for encouraging the return of vehicles such as trolleys Users need to be encouraged to return vehicles such as airport baggage trolleys or supermarket trolleys to a vehicle storage area. The area is equipped with an entrance fitted with a system for dispensing a reward for each vehicle returned to the area. Th... | 10/22/1985 |
| 4493103 | Automatic toll-ticket issuing apparatus An automatic toll-ticket issuing apparatus includes a vehicle-type identification unit for identifying the type of each oncoming vehicle, a toll-ticket issuing unit installed ahead of the identification unit along the vehicle path, and a vehicle-start det... | 01/08/1985 |
| 4433325 | Optical vehicle detection system An optical vehicle detection system comprising camera means for catching the image of a vehicle running in a selected roadway lane to generate an output video signal, inquiring means for inquiring if the output video signal includes a predetermined shadow... | 02/21/1984 |
| 4398172 | Vehicle monitor apparatus A vehicle monitor (10) apparatus for monitoring vehicles (14) in a monitoring location (17). A vehicle unit (12) mountable in a vehicle includes circuitry (21) for transmitting, on a continuous repetitive basis, information characterizing the vehicle and ... | 08/09/1983 |
| 4284971 | Overheight vehicle detection and warning system A system for alerting drivers of vehicles which have an overall height too great to clear an overhead obstruction in their path. Respective pairs of cooperating light sources and light sensors are spaced at appropriate distances from each other and in adv... | 08/18/1981 |
| 4275292 | Method and apparatus for positioning a drag racing vehicle to a starting-line position A method of and apparatus for positioning a drag racing vehicle is provided for the purpose of enabling the driver to position the drag racing vehicle to a preferred and predetermined starting-line position.... | 06/23/1981 |
| 4258351 | System for collection and transmission of road traffic information The system for collection and transmission of road traffic information comprises a lens system installed on a tall structure such as on the roof of a building and angled vertically or diagonally to include in its field of view a road area subjected to obs... | 03/24/1981 |
| 4249159 | Aircraft docking system An aircraft ground guidance and parking system consisting of a lighting display unit adapted to be mounted at a parking station pointing directly down the on-course center line to be followed by the incoming taxying aircraft and at an elevation for viewin... | 02/03/1981 |
| 4247768 | Vehicle velocity related measuring systems A measuring system particularly for measuring the length of a moving vehicle comprises a pair of detector stations spaced a known distance apart along a path of vehicle movement each detector station comprising a vertically extending series of electromagn... | 01/27/1981 |
| 3972021 | System for monitoring spaces by electro-optical means System for monitoring spaces by electro-optical means, using optical imaging means (1) capable of detecting objects present in the monitored spaces and beam splitting means (2) for grating resolution of the object images into geometric, mutually complemen... | 07/27/1976 |
| 3930735 | Traffic survey system This invention is of a traffic survey system in which an aerial photo survey transparency is first made of a significant survey area, for example, two kilometers square. The transparency is then optically scanned to check the position and size of vehicles... | 01/06/1976 |
