Triangular truss concrete screed having a blade extension bracke

Details Triangular truss concrete screed having a blade extension bracke Triangular truss concrete screed having a blade extension bracke

1981-05-15

1983-03-01

Lowe, James B.

Plastic article or earthenware shaping or treating: apparatus

Vibrating means including mechanical movement or power means

404114, 404119, 425458, E01C 1938

Patent

active

043753515

ABSTRACT:
A screed includes a triangular truss frame having first and second ends and a top support member forming the apex of the triangular truss. Front and rear screed blades are coupled in a spaced apart relationship to the lower portion of the front and rear of the frame. The screed includes a detachable screed blade extension bracket which is coupled to the top support member and to the front and rear screed blades. The detachable screed blade extension bracket includes a bracket frame, front and rear blade extension elements which are coupled to the bracket frame and aligned respectively with the front and rear screed blades for extending the effective length of the blade by a predetermined, desired amount. The detachable end bracket extends the effective length of the front and rear screed blades without extending the length of the top support member or the triangular truss frame of the screed.

REFERENCES:
patent: 3702578 (1972-11-01), Davin
patent: 3712189 (1973-01-01), Birtchet et al.
patent: 3838932 (1974-10-01), Glenewinkel
patent: 3957384 (1976-05-01), Lamb et al.
patent: 4030873 (1977-06-01), Morrison
patent: 4068969 (1978-01-01), Beach et al.
patent: 4213749 (1980-07-01), Morrison
patent: 4253778 (1981-03-01), Morrison

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