Patent ID: 6098780
Filing Date: 2000-08-08
Classification: B61H,B65G

Abstract:
The apparatus comprising:a conveyer structure, including first and second T-sections; anda car adapted to ride on said conveyor structure, said car comprising:(a) two pairs of wheel tires positioned to ride on said first and second T-sections respectively, each wheel tire being driven by a respective motor drive unit, each drive unit including an electric motor, an electric motor brake and a shaft-mounted gearbox;(b) four caster guide wheels each mounted adjacent a respective one of said wheel tires so as to rotate in a horizontal plane adjacent a vertical edge of one of said first and second T-sections; and(c) four roller wheels, each mounted to rotate about an axis parallel to the axis about which said wheel tires rotate and immediately adjacent an underside edge of one of said first and second T-sections.