Patent Number: 6,252,513

Title: Pole alarm system

Abstract: A Pole Alarm System including an electromagnetic field sensor and collision sensors for detecting overhead power lines and physical obstructions within the intended path of a telescoping mast or utility boom device is disclosed. The present alarm system includes a mast-mounted housing containing the sensors and a microprocessor-based control unit which interprets the output signals of the sensors and provides both audible and control feedback to a safety control module in the vehicle to alert the operator of impending contact and to automatically stop the movement of the mast. The alarm housing also features a light source which provides illumination in the direction of movement of the mast to assist in positioning thereof. The light source also functions as a heating element to prevent the accumulation of ice on the housing which would detrimentally affect the performance of the system. The alarm housing also includes a plurality of Tilt sensors which monitor the orientation of the mast to prevent mast extension if the device deviates from an acceptable range of operation. A system integrated safety control module mounted in the vehicle provides self-test functions and an error code display to alert the operator to the cause of an alarm signal.

Inventors: Beckmann; Uwe L. (Chapel Hill, NC)

Assignee: The Will-Burt Company

International Classification: B66C 15/00 (20060101); B66C 15/06 (20060101); G08B 021/00 ()

Expiration Date: 06/26/2018