Patents by Inventor Karl Knecht

Karl Knecht 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 and device for manufacturing a heat-insulated pipe
    Patent number: 8950071
    Abstract: During the manufacturing of heat-insulated pipes (1) with an inner duct (3) and an outer duct (2) and a foamed insulation (14) arranged in between, the inner duct is placed on a tension member (10). The latter is tensioned between tensioning means by means of a tensile force, such that it runs straight and that the inner duct is held straight. The latter is held on centering elements (16, 17) which are spaced from one another in a defined way by means of spacers (18). In this straight position the inner duct may be surrounded with foam inside of the outer duct, without needing spacers between the ducts.
    Type: Grant
    Filed: May 5, 2010
    Date of Patent: February 10, 2015
    Assignee: Brugg Rohr AG Holding
    Inventor: Karl Knecht
  • METHOD AND DEVICE FOR MANUFACTURING A HEAT-INSULATED PIPE
    Publication number: 20110047774
    Abstract: During the manufacturing of heat-insulated pipes (1) with an inner duct (3) and an outer duct (2) and a foamed insulation (14) arranged in between, the inner duct is placed on a tension member (10). The latter is tensioned between tensioning means by means of a tensile force, such that it runs straight and that the inner duct is held straight. The latter is held on centering elements (16, 17) which are spaced from one another in a defined way by means of spacers (18). In this straight position the inner duct may be surrounded with foam inside of the outer duct, without needing spacers between the ducts.
    Type: Application
    Filed: May 5, 2010
    Publication date: March 3, 2011
    Applicant: Brugg Rohr AG Holding
    Inventor: Karl Knecht