Patents by Inventor Juergen KNEBL

Juergen KNEBL 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).

  • Method for Bending Thermoplastic Pipes
    Publication number: 20150091214
    Abstract: A method for producing a bent pipe from thermoplastic material with end cross-sections, central points of which have in relation to one another a positional tolerance on the basis of LN xy/JAR xy/FAR xy in relation to one another. A straight pipe element is introduced into a tool and a portion of the straight pipe element is heated that is located in the bending region to a temperature which lies above a glass transition temperature of the thermoplastic material by a first temperature value. The straight pipe element is bent about the heated bending region of the tool by a freely selectable bending angle, which has a spatial alignment in an XYZ system of coordinates that is fixed with respect to the pipe. The pipe is then cooled below the glass transition temperature by a second temperature value.
    Type: Application
    Filed: December 5, 2014
    Publication date: April 2, 2015
    Applicant: PFW AEROSPACE AG
    Inventors: Juergen Knebl, Peter Luettmann, Michael Groel
  • Bent thermoplastic pipe
    Patent number: 8931521
    Abstract: A method for producing a bent pipe from thermoplastic material with end cross-sections, central points of which have in relation to one another a positional tolerance on the basis of LN xy/JAR xy/FAR xy in relation to one another. A straight pipe element is introduced into a tool and a portion of the straight pipe element is heated that is located in the bending region to a temperature which lies above a glass transition temperature of the thermoplastic material by a first temperature value. The straight pipe element is bent about the heated bending region of the tool by a freely selectable bending angle, which has a spatial alignment in an XYZ system of coordinates that is fixed with respect to the pipe. The pipe is then cooled below the glass transition temperature by a second temperature value.
    Type: Grant
    Filed: June 11, 2012
    Date of Patent: January 13, 2015
    Assignee: PFW Aerospace AG
    Inventors: Juergen Knebl, Peter Luettmann, Michael Groel
  • METHOD FOR BENDING THERMOPLASTIC PIPES
    Publication number: 20120325363
    Abstract: A method for producing a bent pipe from thermoplastic material with end cross-sections, central points of which have in relation to one another a positional tolerance on the basis of LN xy/JAR xy/FAR xy in relation to one another. A straight pipe element is introduced into a tool and a portion of the straight pipe element is heated that is located in the bending region to a temperature which lies above a glass transition temperature of the thermoplastic material by a first temperature value. The straight pipe element is bent about the heated bending region of the tool by a freely selectable bending angle, which has a spatial alignment in an XYZ system of coordinates that is fixed with respect to the pipe. The pipe is then cooled below the glass transition temperature by a second temperature value.
    Type: Application
    Filed: June 11, 2012
    Publication date: December 27, 2012
    Inventors: Juergen KNEBL, Peter Luettmann, Michael Groel