The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 12, 2009
Filed:
Sep. 26, 2003
Eberhard Kertscher, Yvonand, CH;
Thomas Bernauer, Neuchâtel, CH;
Eberhard Kertscher, Yvonand, CH;
Thomas Bernauer, Neuchâtel, CH;
The Thomas Machines S.A., Couvet, CH;
Abstract
A device for continuously producing drip irrigation tubes comprises an extruding device () for producing a tube body (), a calibrating device (), and a cooling device () for the tube body (). In addition, a feeding device () for feeding dosing elements () into the tube body () and means for joining these dosing elements () to the inner wall of the tube body () are provided. This feeding device is comprised of a pressing element () that is formed by the end area of the guideway () while protruding into the extruded tube body (), and of a pressing member () that can be pressed against the tube body () from the exterior in the vicinity of pressing element (). The calibrating device () is made of a tubular body () whose insertion area () narrows to the desired diameter of the tube body () and whose longitudinally elongated body area () protrudes into the cooling device (). The longitudinally elongated body area () of the tubular body () of the calibrating device () is provided with a recess () into which the pressing member () protrudes so that the pressing and joining process of the dosing elements () against/to the inner wall of the tube body () ensues inside the calibrating device (). This results in the tube body () not cooling too quickly before the joining process, and in an optimal joining to the dosing elements () without requiring the dosing elements to be preheated.