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:
Apr. 19, 1983
Filed:
Jan. 29, 1981
Dynamit Nobel Aktiengesellschaft, Troisdorf, DE;
Abstract
A machine installation for the manufacture of a thick-walled insulating pipe of elastic, laminatable foamed synthetic resin sheet material, includes an apparatus for effecting the lamination of a foamed synthetic resin sheet material to form a multilayer insulating pipe having a length corresponding to the sheet width of the sheet of foam material and a finishing unit. The laminating apparatus has an expandable and rotatable mandrel equipped with a pneumatic expanding means and an infinitely variable drive mechanisms for rotating the mandrel to wrap the sheet material thereon, and a pressure roller which can be urged against the mandrel. The roller is movable pneumatically by a telescopic holder, and the mandrel is associated with a pivotably mounted burner and a cutter. The unit for finishing the initially formed pipe product has a shaft rotatable in timed segments with clamping jaws attached to holding arms that are spaced from the shaft; the jaws being capable of receiving an unfinished insulating pipe product and being opened and closed pneumatically. One holding arm is associated with a band cutter for trimming the end faces of the insulating pipe product, and another holding arm is associated with a blade for slitting the insulating pipe along its length.