Insertion of compressible sheets in concrete

Road structure – process – or apparatus – Apparatus – Means to install or form joint

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E01C 2302

Patent

active

040777324

ABSTRACT:
Slip form concrete laying machines for forming curbs are equipped with apparatus which forcibly inserts compressible sheets downwardly in the freshly laid concrete, the sheet being strengthened by a backing plate and an attached strip at its lower edge.

REFERENCES:
patent: 789992 (1905-05-01), Miller
patent: 1804215 (1931-05-01), Fischer
patent: 1903456 (1933-04-01), Heltzel
patent: 2014894 (1935-09-01), Heltzel
patent: 2265301 (1941-12-01), Meyer
patent: 2729152 (1956-01-01), Carnes
patent: 3218944 (1965-11-01), Larsen
patent: 3259032 (1966-07-01), Suhr
patent: 3335647 (1967-08-01), Thorp

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