Truss assembly system

Details Truss assembly system Truss assembly system

1996-12-18

1999-02-16

Lisehora, James

Road structure, process, or apparatus

Apparatus

With means for profile shaping, e.g., crown

404114, E01C 1938

Patent

active

058713026

ABSTRACT:
A vibratory concrete screed including alternating turnbuckles and tubular housings, mated together for adjusting tension and screeding surface camber. The turnbuckles and tubular housings include interior space therethrough which houses an elongate rotatable shaft for providing vibration. The elongate shaft includes eccentric weights rotating within bearings within the turnbuckles and driven by drive shafts driven in turn by a motor located at one end of the screed. The screed includes male and female joiner pieces having mating bearing surfaces for securing abutting screed sections. The invention also includes a laser alignment system for adjusting camber.

REFERENCES:
patent: 4124325 (1978-11-01), Cutler
patent: 4349295 (1982-09-01), Morrison
patent: 4577994 (1986-03-01), Miller
patent: 4701071 (1987-10-01), Morrison
patent: 4931008 (1990-06-01), Morrison
patent: 4950101 (1990-08-01), Artzberger
patent: 5664908 (1997-09-01), Paladeni

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