Patents by Inventor Herbert Egli

Herbert Egli 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).

  • USE OF POLYAMINE AS ANTI-STICKING ADDITIVE
    Publication number: 20150322339
    Abstract: Method of use of at least one polyamine compound as sticking decreasing additive for soil with a clay content of more than 10% by weight.
    Type: Application
    Filed: August 17, 2012
    Publication date: November 12, 2015
    Applicant: CONSTRUCTION RESEARCH & TECHNOLOGY GMBH
    Inventor: Herbert EGLI
  • Sealing Paste
    Publication number: 20120037042
    Abstract: The present invention relates to mixtures, preferably sealing pastes, particularly preferably shield tail sealing pastes, and the use of the mixtures according to the invention for sealing construction elements and/or construction machines, in particular for preferably temporary sealing of the transition between shield tail of a tunnel boring machine and the pipe lining or tubbing lining of the tunnel securing means.
    Type: Application
    Filed: November 25, 2009
    Publication date: February 16, 2012
    Applicant: Constuction Research & Technology GMBH
    Inventors: Peter Ellenberger, Herbert Egli, Giuseppe Viscomi
  • Method using composition to reduce cutting head wear
    Patent number: 7718581
    Abstract: A method of reducing wear in a cutting head of a tunnel boring machine, by means of the addition at the cutting head of a foamed aqueous liquid composition, which comprises a foaming agent and a lubricant, the lubricant being selected from the group consisting of high molecular weight polyethylene oxides and bentonite. Preferred foaming agents are anionic and nonionic surfactants. Wear rates of cutting elements of TBMs boring in hard rock are considerably reduced. A wear-reducing foamable concentrate is also described.
    Type: Grant
    Filed: September 2, 2003
    Date of Patent: May 18, 2010
    Assignee: Construction Research & Technology GmbH
    Inventors: Herbert Egli, Peter Ellenberger
  • Method
    Publication number: 20060122074
    Abstract: A method of reducing wear in a cutting head of a tunnel boring machine, by means of the addition at the cutting head of a foamed aqueous liquid composition, which comprises a foaming agent and a lubricant, the lubricant being selected from the group consisting of high molecular weight polyethylene oxides and bentonite. Preferred foaming agents are anionic and nonionic surfactants. Wear rates of cutting elements of TBMs boring in hard rock are considerably reduced. A wear-reducing foamable concentrate is also described.
    Type: Application
    Filed: September 2, 2003
    Publication date: June 8, 2006
    Inventors: Herbert Egli, Peter Ellenberger