Air vibrated/winched concrete screed

Details Air vibrated/winched concrete screed Air vibrated/winched concrete screed

1980-03-21

1981-04-14

Hoag, W. E.

Plastic article or earthenware shaping or treating: apparatus

Vibrating means including mechanical movement or power means

404119, B28B 1700, B28B 108

Patent

active

042616948

ABSTRACT:
A vibrating concrete screed utilizes a plurality of air-driven vibrators which are mounted on an elongated frame in a manner designed to achieve a unique vibration pattern throughout the length of the frame. An air-driven winch on the screed enables the screed to be winched automatically and at a controlled speed while the screed is being vibrated.

REFERENCES:
patent: 1390479 (1921-09-01), Baker
patent: 2592960 (1952-04-01), Schulze
patent: 3377933 (1968-04-01), Dale
patent: 3412658 (1968-11-01), Griffin
patent: 3453988 (1969-07-01), Trent et al.
patent: 3767312 (1973-10-01), Raymond et al.
patent: 4030873 (1977-06-01), Morrison
patent: 4132492 (1979-01-01), Jenkins

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