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Apparatus-and-method-for-producing-pipe-and-pipe-produced-thereby

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Apparatus and method for producing pipe and pipe produced thereby

Details

Inventors: Presby, David W.;
Assignee:
Primary Examiner: Rachuba; M.
Assistant Examiner: Kirkman; Christopher
Attorney, Agent or Firm: Dishong; George W.

An apparatus and method for perforating corrugated plastic pipe from the inside of the pipe to the outside and the pipe produced by the method. The apparatus has a perforating device attached to an elongated support member. Perforations are created by advancing pipe over the perforating device or by advancing the perforating device into the interior of the pipe. Where the pipe is advanced over the perforating device, a carriage, holding the pipe, is riding on a track which guides the pipe into engagement or into cutting or perforating proximity with the perforating device. The perforating device includes a housing holding motors with cutters attached to them. The cutters cut the inner corrugations or the valleys of the pipe as the pipe is passed over the perforating device. Pipe is perforated by advancing it over a perforating device, and curing the pipe from the inner pipe surface to the outer pipe surface. The perforated pipe made using this apparatus and method is distinguishable from similar pipe where the preforations are made from the outside of the pipe to the insided of the pipe.

DETAILED DESCRIPTION This invention most generally relates to an apparatus and method for perforating pipe by passing the pipe over a perforating means or by advancing the perforating means into the interior of the pipe and curing perforations in the pipe from the inner surface to the outer surface.
It is noted that it is only necessary that there be relative linear movement and there may also be relative rotational movement, simultaneously with or separately from the linear movement, between the pipe and the perforation means.
More particularly, the invention relates to an apparatus having a support system, a perforating means attached to the end of the support system; and a means for advancing the pipe over the perforating means in order to perforate the pipe.
A basic object of the present invention is to provide an apparatus for perforating pipe comprising a support system having a first end, a means for perforating the pipe attached to the first end of the support system and a means for causing the pipe and the means for perforating the pipe to perforatingly interengage interior of the pipe whereby perforations are created in the pipe.
The perforations thus made are created from inside the pipe to the outside of the pipe.
An object of the present invention is to provide an apparatus for perforating pipe that perforates pipe faster than those of the prior art, and that allows for holes to be either round or slotted.
It is a primary object of the present invention to provide an advancing means for the apparatus for perforating pipe that employs a carriage which rides upon rails, and which can give support to the pipe as it is advanced over or removed from over the perforating means.
It is a further object of the present invention to provide a carriage with at least one semicircular member as part of the advancing which can impart longitudinal rotation to a pipe so that the location of the perforations around the circumference of the pipe can be varied.
It is a further object of the present invention to provide as part of the advancing means, a track with at least one rail whereupon the carriage can be moved, thus engaging and disengaging the pipe with the perforating means

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