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A gantry conveyor apparatus for transporting components between work stations in an assembly line. The apparatus includes an elevated gantry beam and two gantry carts movably mounted to roll along the beam. The gantry conveyor apparatus also includes a conveyor coupled to each gantry cart. The conve

A gantry conveyor apparatus for transporting components between work stations in an assembly line. The apparatus includes an elevated gantry beam and two gantry carts movably mounted to roll along the beam. The gantry conveyor apparatus also includes a conveyor coupled to each gantry cart. The conveyor moves the carts along the gantry beam between stations in an assembly line. A lift tube is supported on each gantry cart and engages a part at one station, raises the part to an elevated transport position, and lowers and releases the part at a subsequent station. The apparatus also includes a harmonic lift drive coupled to the lift tubes and drives the lift tubes using a single motor rather than a separate motor at each lift.

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A gantry conveyor apparatus for transporting components between work stations in an assembly line. The apparatus includes an elevated gantry beam and two gantry carts movably mounted to roll along the beam. The gantry conveyor apparatus also includes a conveyor coupled to each gantry cart. The conve

A gantry conveyor apparatus for transporting components between work stations in an assembly line. The apparatus includes an elevated gantry beam and two gantry carts movably mounted to roll along the beam. The gantry conveyor apparatus also includes a conveyor coupled to each gantry cart. The conveyor moves the carts along the gantry beam between stations in an assembly line. A lift tube is supported on each gantry cart and engages a part at one station, raises the part to an elevated transport position, and lowers and releases the part at a subsequent station. The apparatus also includes a harmonic lift drive coupled to the lift tubes and drives the lift tubes using a single motor rather than a separate motor at each lift. able relative to the rotor, the coil plate being movable toward the coil body and away from the rotor in response to electrical power being supplied to the coil; a coil spring mounted between the coil plate and the coil body that moves the coil plate away from the coil body and toward the rotor when the electrical power is removed from the coil, the coil plate being operatively engaged with the rotor to cause braking action preventing rotation of the rotor when the electrical power is removed from the coil; and a friction plate mounted stationarily to the coil body on an opposite side of the rotor from the braking surface of the piston, the friction plate having a braking surface that engages the rotor on the opposite side of the rotor when hydraulic pressure is supplied to the piston and also when electric power is removed from the coil. 7. A brake assembly for a rotatable shaft of a vehicle, comprising: a rotor for mounting to the shaft of the vehicle for rotation therewith, the rotor having an annular braking surface, the shaft having an axis; a hydraulic piston axially movable relative to the rotor, the piston having a braking surface for frictionally engaging the braking surface of the rotor when hydraulic fluid pressure is supplied to the piston; a coil body having an electromagnetic coil therein; a coil plate axially moveable relative to the rotor, the coil plate being movable toward the coil body and away from the rotor in response to electrical power being supplied to the coil, and a coil spring mounted between the coil plate and the coil body that moves the coil plate away from the coil body and toward the rotor when the electrical power is removed from the coil, the coil plate being operatively engaged with the rotor to cause braking action preventing rotation of the rotor when the electrical power is removed from the coil; wherein: the coil body has a cylinder in which the piston is carried and a hydraulic passage for receiving hydraulic fluid pressure, the coil body being axially movable relative to the rotor, such that movement of the piston toward the rotor due to hydraulic pressure being supplied causes the coil body to move away from the rotor; and wherein the brake assembly further comprises: a friction plate mounted stationarily to the coil body on an opposite side of the rotor from the braking surface of the piston, the friction plate having a braking surface that engages the rotor on the opposite side of the rotor when the coil body moves away from the rotor. 8. A vehicle brake assembly, comprising: a mounting plate for mounting to a stationary portion of a vehicle, the mounting plate having a hole for receiving a rotatable shaft of the vehicle; a rotor for mounting to the shaft of the vehicle for rotation therewith, the rotor having annular first and second braking surfaces on opposite sides thereof; a hydraulic piston axially moveable relative to the mounting plate, the piston having an annular braking flange facing the second braking surface of the rotor for frictionally engaging the second braking surface of the rotor when hydraulic fluid pressure is supplied to the piston; a coil body carried by to the mounting plate, the braking flange of the piston being located between the coil body and the rotor, the coil body having an electromagnetic coil therein; a coil plate axially moveable relative to the mounting plate and located between the coil body and the braking flange of the piston, the coil plate being movable toward the coil body and away from the rotor in response to electrical power being supplied to the coil; a coil spring mounted between the coil plate and the coil body that moves the coil plate away from the coil body and toward the rotor when the electrical power is removed from the coil, the coil plate pressing the braking flange of the piston into engagement with the second braking surface of the rotor, preventing rotation of the rotor when the electrical power is r