Gerald M Jackson

US Patent:

7204657, Apr 17, 2007

Filed:

Mar 21, 2005

Appl. No.:

11/085492

Inventors:

Gerald Mclain Jackson - Lake City MI, US

International Classification:

E01C 19/00
E01C 19/22

US Classification:

404 85, 404 845, 404 848, 404118

Abstract:

A lightweight one man screed apparatus to automatically strike off and level uncured concrete flatwork, includes a tri-pod framework beneath which a cutting/leveling member operates. The apparatus is controlled by two grade setting devices, adjustably mounted to the screed tool, which may be adjusted relative to a laser plane generating system. Physical control of the screed member may be provided by at least one screed tool pivotal arm assembly moved for and aft by a carriage operated under the tri-pod framework within a fore and aft footprint. The screed tool is adjusted to grade by being raised or lowered by at least one linear actuators responding to an electronic controller. When moving the framework and screed assembly into freshly poured concrete, an operator is assisted by retractable wheels. The wheels are rotationally stowable or used deployed as part of the tripod/transport system facilitating mobility.