Back to results
US 4,055,098 AGranted
Manufacturing corrugated perforated plastic tubes
AssigneeWavin B.V.
InventorArnoldus Willem Jan Leloux
Life of this patent
Estimating the term…
Abstract
A device for manufacturing corrugated plastic tube by subjecting an internally unsupported corrugated plastic tube, at a temperature between 30.degree. and 70.degree. C, to the simultaneous action of at least two punching members in one or in two corrugations. A device comprising a guide for corrugated plastic tube, and punching means with an operating member for simultaneously acting upon at least two punching members spaced a short distance from each other.
Claims5
A device for forming perforations in a corrugated plastic tube, comprising:
- guide means for supporting said corrugated plastic tube;
- a plurality of punching members, at least two of said punching members being substantially parallel and spaced in close proximity to each other;
- operating means for activating said punching members;
- means for preventing deformation of said tube;
- conveying means for conveying said tube to be perforated;
- said operating means simultaneously activating said at least two substantially parallel spaced punching members;
- and
- said at least two substantially parallel spaced punching members being disposed in a plane which is oriented substantially transverse to the longitudinal axis of said conveying means.
5 more elements
Dependencies are inferred from the claim text.