Patent ID: 6218797
Filing Date: 2001-04-17
Classification: E01F

Abstract:
A crossing guard maintenance system for use with a crossing guard control system having a motor mechanically coupled to a crossing guard arm for moving said crossing guard arm between up and down positions, said motor also being normally electrically connected to said control system, said crossing guard maintenance system comprising:a. a function switch having a first position, which electrically connects said motor to said control system, and having a second position:b. a diode electrically connected in the second position of said function switch to said motor to form a motor/diode circuit such that said diode provides a path for current in said motor/diode circuit when said motor operates as a generator;c. an electrical power source; and,d. a momentary switch connected between said power source and said motor/diode circuit, said momentary switch having a first open position in which electrical power is not supplied to said motor/diode circuit and a second closed position in which electrical power is supplied to said motor/diode circuit to reverse the polarity of said motor.