Apparatus for molding articles from fibrous concrete

Details Apparatus for molding articles from fibrous concrete Apparatus for molding articles from fibrous concrete

1986-12-03

1987-11-24

Hoag, Willard E.

Plastic article or earthenware shaping or treating: apparatus

Press forming apparatus having opposed press members

404105, 425218, 425432, 425447, 425456, B28B 2114, B29C 3900

Patent

active

047086289

ABSTRACT:
The proposed apparatus is intended for use in industrial and civil engineering for molding high-strength thin-wall fibrous concrete articles.
The apparatus comprises a stationary tray, and a movable gantry carrying a concrete mixer with a concrete levelling member, and a concrete compacting roller arranged in succession above the tray. The working member has the form of a plurality of rotating rod-like spirals of equal pitch and diameter arranged in the vertical plane to extend through the length of the compacting roller above the tray. The distance between the vertical axes of the adjacent spirals is equal, and is smaller than the diameter of the spirals.

REFERENCES:
patent: 3217375 (1965-11-01), Kinnard
patent: 3362308 (1968-01-01), Austin et al.
patent: 3541931 (1970-11-01), Godbersen
patent: 4280800 (1981-07-01), Bunn
patent: 4306595 (1981-12-01), Longinotti

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