Patents by Inventor Ernst August Eigemann

Ernst August Eigemann 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).

  • Injection bolt with a fixed static mixer
    Patent number: 8240958
    Abstract: The invention provides an injection bolt for use in securing a rock mass having: a shaft for insertion into a hole in the rock mass which shaft has a profile and forms a profiled internal bore which bore has an inlet suitable for connection to an anchoring material pump and an outlet for injecting anchoring material into the hole in the rock mass; and a static mixer for mixing multiple components of the anchoring material; wherein the internal bore comprises the static mixer which is fixed in place by the profile; and a method for its production.
    Type: Grant
    Filed: February 26, 2007
    Date of Patent: August 14, 2012
    Assignee: Minova International Limited
    Inventors: Ernst August Eigemann, Ferdinand Coerschulte
  • Injection bolt with a fixed static mixer
    Publication number: 20090324343
    Abstract: The invention provides an injection bolt for use in securing a rock mass having: a shaft for insertion into a hole in the rock mass which shaft has a profile and forms a profiled internal bore which bore has an inlet suitable for connection to an anchoring material pump and an outlet for injecting anchoring material into the hole in the rock mass; and a static mixer for mixing multiple components of the anchoring material; wherein the internal bore comprises the static mixer which is fixed in place by the profile; and a method for its production.
    Type: Application
    Filed: February 26, 2007
    Publication date: December 31, 2009
    Applicant: Minova International Limited
    Inventors: Ernst August Eigemann, Ferdinand Coerschulte