Conduit making apparatus

Details Conduit making apparatus Conduit making apparatus

1976-10-18

1980-01-15

McQuade, John

Plastic article or earthenware shaping or treating: apparatus

With transportation device for relocating molding apparatus...

425 64, 425112, 425224, 425404, B28B 2144, B28B 2156

Patent

active

041837240

ABSTRACT:
This invention relates to an apparatus for making concrete conduit.
The apparatus of this invention for making concrete conduit comprises a base and a transmission mounted on the base with a power unit drivingly connected to the transmission; a form connected to the transmission for shaping a conduit mat of material; feeders drivingly connected to the transmission for applying material over the form to form a conduit mat of the material; advancing apparatus to move the formed conduit mat from the form; fastener apparatus for binding the layers of conduit mat together as the conduit mat is advanced; injection apparatus connected to the base for injecting concrete on the conduit mat; trowel means adjacent the inside and the outside of the conduit mat for working the concrete into the conduit mat and smoothing both the inside and the outside surfaces of the conduit mat; and means for controlling the curing of the concrete conduit thus formed. The apparatus also is provided with cutter apparatus for cutting various desired lengths of concrete conduit. Also the apparatus of this invention is adaptable to being mounted on a mobile base which lays the concrete conduit as it is formed.

REFERENCES:
patent: 2605202 (1952-07-01), Reynolds
patent: 2998339 (1961-08-01), Barnes et al.
patent: 3470051 (1969-09-01), Meyer
patent: 3497413 (1970-02-01), Ullman et al.
patent: 3520749 (1970-07-01), Rubenstein
patent: 3526692 (1970-09-01), Onaka

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