Alex P Giusti

US Patent:

7372247, May 13, 2008

Filed:

Jul 9, 2003

Appl. No.:

10/616861

Inventors:

Alex Giusti - Sacramento CA, US
Derrick Torres - Folsom CA, US
Michael Roach - Visalia CA, US

Assignee:

Tri-Site, Inc. - Folsom CA

International Classification:

G01R 19/00
G01R 33/00

US Classification:

324 67, 324326, 324329

Abstract:

An apparatus and method to locate and mark the surface position of an underground utility while maneuvering along the path of the utility. The apparatus uses an underground utility detector that responds to the location of an underground utility to continually position a carriage proximate vertical of the utility. Marker systems are aligned with the carriage and apply either a unique paint symbol on pavement or a spike in the ground. The apparatus is configured to use an underground utility detector or positioning equipment that generate positional signals. The apparatus may be configured to mark utility positions at predetermined intervals and mark utility offset positions. The apparatus may be attached to a vehicle, towed by a vehicle, motorized or propelled by a person.