Conduit making method
OwnerDavid Lariveinventor
Life of this patent
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Abstract
This invention relates to a method for making concrete conduit. The method of this invention pertains to forming a conduit mat of material on a form, advancing the formed conduit mat of material from the form, fastening the conduit mat together, cutting the conduit into desired lengths, applying concrete on the conduit mat, working the concrete from both the inside and outside of the conduit mat to form smooth surfaces on both surfaces of the concreted conduit mat and curing the concreted conduit mat to form concrete conduit. In one embodiment of this invention, the method is performed from a mobile base which moves forward as the concrete conduit is continuously made and layed on the ground or underwater.
Claims9
A method for making concrete conduit comprising:
- (a) forming a conduit mat in a mat forming zone by feeding material on the bias and under tension onto a form in said mat forming zone,
- (b) advancing the said formed conduit mat from said form and forming zone,
- (c) applying concrete on said conduit mat as said conduit mat is placed over a trowel thereby forming a concrete conduct,
- (d) moving said conduit axially only,
- (e) rotating a trowel circumferentially about said inside surface of said concreted conduit relative to the direction of advance of said concreted conduit for smoothing said concrete applied on said mat, and
- (f) curing the concreted mat to form the concrete conduit.
Dependencies are inferred from the claim text.