Portable roadway perimeter alarm
First Claim
1. An apparatus for detecting a vehicle penetrating a perimeter of a roadway work area and providing a warning to workers in the work area comprising:
- an impact sensor and transmitter unit having an electromechanical shock sensor electrically connected to a transmitter;
the impact sensor and transmitter unit having a means for communication with a warning receiver and alarm unit;
the impact sensor and transmitter unit mounted in a top of a safety cone; and
a means for providing electrical energy to the impact sensor and transmitter unit.
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Accused Products
Abstract
The portable roadway perimeter alarm has an impact sensor which may be a shock or pressure sensor that is connected to a transmitter. The impact sensor and transmitter unit is located around the perimeter of a roadway work area to detect vehicles penetrating the perimeter into the designated work area which vehicles may represent a hazard to work crews. The vehicle penetration event is transmitted to a warning receiver and alarm unit which may be placed in a pocket of a worker'"'"'s vest or may be mounted on a work vehicle to sound an area alarm. The impact sensor and transmitter units are durable and operate in adverse environmental conditions.
46 Citations
11 Claims
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1. An apparatus for detecting a vehicle penetrating a perimeter of a roadway work area and providing a warning to workers in the work area comprising:
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an impact sensor and transmitter unit having an electromechanical shock sensor electrically connected to a transmitter;
the impact sensor and transmitter unit having a means for communication with a warning receiver and alarm unit;
the impact sensor and transmitter unit mounted in a top of a safety cone; and
a means for providing electrical energy to the impact sensor and transmitter unit. - View Dependent Claims (2, 3, 4)
the alarm including a vibrator.
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4. The apparatus as in claim 1 wherein the apparatus is additionally comprised of a road tube having a hose containing a plurality of lead wires with a means for sensing pressure applied to the road tube and with the lead wires electrically connected to a second transmitter having a communication means with the warning receiver and alarm unit.
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5. An apparatus for detecting a vehicle penetrating a perimeter of a roadway work area and providing a warning to workers in the work area comprising:
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an impact sensor and transmitter unit having a road tube with a hose filled with a liquid which hose is connected to a pressure sensor at an end and an end cap closure at a hose opposite end from the pressure sensor;
the pressure sensor electrically connected to a transmitter having a communication means with a warning receiver and alarm unit; and
a means for providing electrical energy to the impact sensor and transmitter unit.
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6. An apparatus for detecting a vehicle penetrating a perimeter of a roadway work area and providing a warning to workers in the work area comprising:
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an impact sensor and transmitter unit having an electromechanical shock sensor electrically connected to a transmitter;
the impact sensor and transmitter unit having a means for communication with a warning receiver and alarm unit;
the impact sensor and transmitter unit mounted intermediate a top and a bottom of a safety cone; and
a means for providing electrical energy to the impact sensor and transmitter unit. - View Dependent Claims (7, 8, 9, 10, 11)
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Specification