Vibrating concrete screed

Details Vibrating concrete screed Vibrating concrete screed

1976-04-26

1977-06-21

Husar, Francis S.

Plastic article or earthenware shaping or treating: apparatus

Vibrating means including mechanical movement or power means

259DIG42, 404114, 404119, 425218, B28B 108

Patent

active

040308731

ABSTRACT:
A lightweight and portable vibrating screed is provided with an elongate open structure frame which may be made up of a plurality of interconnected frame units. A shaft is supported for rotation in spaced bearings along the frame and extends outwardly beyond the bearings at each end of the frame. Variable speed drive means is provided for rotating the shaft at a sufficient speed to cause deflection of the portions of the shaft between the bearings and the portions of the shaft extending outwardly beyond the bearings to impart uniform vibrations throughout the length of the screed.

REFERENCES:
patent: 1119387 (1914-12-01), Baker
patent: 1943076 (1934-01-01), Jackson
patent: 3113494 (1963-12-01), Barnes
patent: 3220322 (1965-11-01), Lewis
patent: 3435740 (1969-04-01), McGall

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