Autocutting extrusion machine for producing prestressed concrete

Details Autocutting extrusion machine for producing prestressed concrete Autocutting extrusion machine for producing prestressed concrete

1986-03-31

1988-01-12

Hoag, Willard E.

Plastic article or earthenware shaping or treating: apparatus

Building forms or construction engineering type mold with...

Including mold charging means

425224, 425308, 425432, 425456, B28B 108, B28B 320

Patent

active

047188383

ABSTRACT:
The present invention of an extrusion machine for forming prestressed concrete cored slabs includes a mechanism for cutting and core-plugging a molded concrete slab into sections having both ends plugged. The extrusion machine is capable of forming several transverse ribs at intermediate positions along the slab. The mechanism includes a cutting blade, blade cylinder, blade vibrator, supplement feed device, supplement feed plate, supplement feed plate cylinder, a hydraulic system and means for movement of the machine. The extrusion machine is able to produce directly high quality prestressed concrete cored narrow and large size slab units.

REFERENCES:
patent: 2853250 (1958-09-01), Crom
patent: 3143781 (1964-08-01), Kalns
patent: 3161117 (1964-12-01), Supject
patent: 3401438 (1968-09-01), Dennis
patent: 3740176 (1973-06-01), Nilsson
patent: 3994639 (1976-11-01), Hewitt
patent: 4084928 (1978-04-01), Petersik
patent: 4273522 (1981-06-01), Bunn et al.

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