Patents by Inventor Theo Staheli

Theo Staheli 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).

  • Publication number: 20070175570
    Abstract: The invention relates to a method for producing compressed plastic-coated fibres or fibre strands, consisting of essentially parallel filaments, from fibre strands consisting of filaments coated with plastic. The invention is characterised in that fibre strands or a composite of a plurality of such fibre strands consisting of essentially parallel filaments to which the plastic is applied in a melted or liquid state, optionally as powder, are guided, following the coating, by means of a rotating device (6) which is used to carry out a local rotation of the fibres. The invention also relates to the use of the inventive individual filaments for producing saw threads, tapes and prepegs, fibre-reinforced plastic granulated material and fibre-reinforced preforms, or fibre-reinforced pultruded or extruded profiled elements. The invention further relates to a device for carrying out the inventive method.
    Type: Application
    Filed: May 21, 2004
    Publication date: August 2, 2007
    Applicant: SIA ABRASIVES INDUSTRIES AG
    Inventors: Christian Jentgens, Kurt Lehmann, Donat Frei, Theo Staheli
  • Patent number: 6838123
    Abstract: The invention relates to a method for coating fibers shaped as fiber strands (roving and mats) using a fluidized bed technique, wherein (i) the desired composition of the individual coating constituents is directly applied from the fluidized bed without previous compounding and (ii) the individual coating constituents contained in the fluidized bed are additionally mixed in the mass so that dissociation of individual constituents is substantially avoided. The invention also relates to a device for implementing the method.
    Type: Grant
    Filed: July 1, 2002
    Date of Patent: January 4, 2005
    Assignee: Neopreg AG
    Inventor: Theo Staheli
  • Publication number: 20020197397
    Abstract: The invention relates to a method for coating fibers shaped as fiber strands (roving and mats) using a fluidized bed techniques, wherein (i) the desired composition of the individual coating constituents is directly applied from the fluidized bed without previous compounding and (ii) the individual coating constituents contained in the fluidized bed are additionally mixed in the mass so that dissociation of individual constituents is substantially avoided. The invention also relates to a device for implementing the method.
    Type: Application
    Filed: July 1, 2002
    Publication date: December 26, 2002
    Applicant: NEOPREG AG
    Inventor: Theo Staheli