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. 06, 1980
Filed:
Aug. 30, 1978
Wilhelm Brand, Hannover, DE;
Hermann Berstorff Maschinenbau GmbH, Hannover Kleefeld, DE;
Abstract
Extrusion apparatus for manufacturing blow moulded sheets of expanded polystyrene wherein, following an extruder there is a static cooler/mixer member comprising inner and outer cooling surfaces defining between them an annular passage, the inner cooling surface having a star-shaped outline when viewed in cross-section with the points of the star extending at an oblique angle to the longitudinal axis. Preferably the star-shaped outline is provided by folded metal strips several of which are provided alternately angled and staggered with respect to one another.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile