Plastic article or earthenware shaping or treating: apparatus – Vibrating means including mechanical movement or power means
Patent
1981-03-23
1983-06-07
Parrish, John A.
Plastic article or earthenware shaping or treating: apparatus
Vibrating means including mechanical movement or power means
404118, 404119, B28B 108
Patent
active
043869017
ABSTRACT:
A lightweight and portable screen mounts a gasoline engine which drives a vibrating shaft and is adapted with handles for being used in "wet" or "mud" screeding without requiring forms as guide supports.
REFERENCES:
patent: 3992124 (1976-11-01), Schrader
patent: 4213749 (1980-07-01), Morrison
Olive B. B.
Parrish John A.
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