Patents by Inventor Peter Gschwend

Peter Gschwend 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).

  • Fastening element assembly and method of setting fastening elements
    Patent number: 5044851
    Abstract: A fastening element is set in a receiving material, such as concrete, stone and the like, by driving it through the base of a blind borehole previously formed in the receiving material. When the fastening element is driven initially, it moves through a sleeve and expands and secures the sleeve in the blind borehole. Accordingly, the fastening element is fixed in the receiving material and is also secured by the sleeve in the range of the borehole in the receiving material. A fastening element assembly made up of a fastening element and a sleeve can be used.
    Type: Grant
    Filed: December 26, 1989
    Date of Patent: September 3, 1991
    Assignee: Hilti Aktiengesellschaft
    Inventor: Peter Gschwend
  • Expansion dowel assembly and method of anchoring the assembly
    Patent number: 4921381
    Abstract: An expansion dowel assembly includes an axially elongated expansion member, a first member for expanding the expansion member and a second member for anchoring the expansion member in a borehole before is is expanded by the first member. The second member can be connected to the expansion member or mounted in and in contact with the expansion member.
    Type: Grant
    Filed: September 12, 1988
    Date of Patent: May 1, 1990
    Assignee: Hilti Aktiengesellschaft
    Inventors: Peter Gschwend, Manfred Breuss