ALEXANDRIA, Va., March 24 -- United States Patent no. 12,583,167, issued on March 24, was assigned to Plast-Control GmbH (Remscheid, Germany).
"Cooling ring for cooling a film tube" was invented by Stefan Konermann (Remscheid, Germany), Martin Winhausen (Dusseldorf, Germany) and Mallzim Shabani (Leverkusen, Germany).
According to the abstract* released by the U.S. Patent & Trademark Office: "A cooling ring for cooling a film tube (14) in a film blowing installation, includes a cooling gas inlet (18), a distribution system (20) for distributing the cooling gas over the circumference of the film tube (14), a supply gap (28) for guiding the cooling gas in a radial direction towards the film tube, a cooling gas outlet forming an annular gap (...