Patent Number: 7,029,199

Title: Automatic ground marking method and apparatus

Abstract: An automatic ground marking apparatus including a carriage (1) responsive to carriage control signals for traversing the ground (5), the carriage having a controllable steering and drive system, a controllable marking system and a position determining system (6) arranged to determine the position of the carriage. The ground marking apparatus further includes a processor (8) responsive to the position determining system and operatively executing a software product for generating the carriage control signals to cause the carriage (1) to mark out a predetermined sign (14) on the ground. The position determining system (6) suitably employs a laser beam (4) and reflective tracking prism (2), and the predetermined sign may be defined by data points stored in a file (9) accessed by the processor (8) (FIG. 1).

Inventors: Mayfield; Ian (Queensland, AU), Johnson; Matthew J (Queensland, AU)

Assignee: Edgeroi Pty. Ltd.

International Classification: E01C 23/07 (20060101)

Expiration Date: 4/18/02018