Patents by Inventor Bert Wöllner

Bert Wöllner has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Patent number: 9932694
    Abstract: A roller guides and processes synthetic strand material. The roller includes a drivable roller shell. The roller shell has, on a projecting free end thereof, a cover which is effective relative to the surroundings. In order to secure the end of the roller shell relative to an operating side, the cover is freely rotatably connected to the roller shell.
    Type: Grant
    Filed: October 13, 2014
    Date of Patent: April 3, 2018
    Assignee: Oerlikon Textile GmbH & Co. KG
    Inventors: Jens Weinhold, Joachim Lauckner, Bert Wöllner, Marco Sacher
  • Publication number: 20160251781
    Abstract: A roller guides and processes synthetic strand material. The roller includes a drivable roller shell. The roller shell has, on a projecting free end thereof, a cover which is effective relative to the surroundings. In order to secure the end of the roller shell relative to an operating side, the cover is freely rotatably connected to the roller shell.
    Type: Application
    Filed: October 13, 2014
    Publication date: September 1, 2016
    Inventors: Jens WEINHOLD, Joachim LAUCKNER, Bert WÖLLNER, Marco SACHER
  • Patent number: 9011134
    Abstract: The invention relates to a method and apparatus for fibrillating synthetic ribbons in an extrusion process for the production of, for example, grass fibers. The extrusion process creates a sheet of ribbons from an extruded foil or a multiplicity of extruded monofils, and stretches them conjointly. The ribbons are led side by side in a parallel arrangement along the circumference of a fibrillating roll with a partial wrap. To produce a pattern of fibrillation irrespective of the thickness of the ribbons and the elasticity of the ribbons, the invention provides that a multiplicity of short partial cuts is made in the ribbons by a plurality of successively engaging rows of blades on the fibrillating roll each having a multiplicity of projecting cutting tips.
    Type: Grant
    Filed: October 30, 2012
    Date of Patent: April 21, 2015
    Assignee: Oerlikon Textile GmbH & Co., KG
    Inventors: Jens Weinhold, Bert Wöllner, Marko Neubert, Uwe Hirsch
  • Publication number: 20120112381
    Abstract: The invention relates to a method and a device for melt spinning and cooling a plurality of monofilaments which are extruded through a plurality of openings of a spinneret and guided into a cooling bath. The removal process consists of redirecting the monofilaments within the cooling bath. According to the invention, in order to prevent adhesion and an oblique pull-off, the monofilaments are divided into multiple filament groups after extrusion, said groups consisting of multiple monofilaments, and the filament groups are individually redirected independently of each other within the cooling bath into multiple redirecting positions by separate redirecting sheaves.
    Type: Application
    Filed: May 3, 2010
    Publication date: May 10, 2012
    Applicant: OERLIKON TEXTILE GMBH & CO.KG
    Inventors: Bert Wöllner, Kenneth Schindler