Molding forms for making precast portal assembly sections for cu

Details Molding forms for making precast portal assembly sections for cu Molding forms for making precast portal assembly sections for cu

1984-10-18

1987-06-16

Woo, Jay H.

Static molds

Container-type molding device

Adjustable, forming different size or shaped product

249 12, 249 27, 249102, 249123, 249160, 249184, 249209, B28B 730

Patent

active

046731598

ABSTRACT:
Molding forms for precast concrete portal assemblies are described. The molding forms include adjustable form surfaces for precasting different shaped portal assemblies from the same basic mold. The molding forms herein are particularly designed for molding portal assemblies for use at either or both end of box culverts which provide passages extending under a longitudinal embankment at skew angles rather than transversely perpendicular to the embankment access.

REFERENCES:
patent: 3701508 (1972-10-01), Cross
patent: 3767153 (1973-10-01), Haller et al.
patent: 4023764 (1977-05-01), Clements
patent: 4127254 (1978-11-01), Kahan
patent: 4219513 (1980-08-01), Miller

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