Patents by Inventor Popp Franz

Popp Franz 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).

  • Anchor sleeve for composite anchors and method of preparing corrosion-resistant anchorages
    Patent number: 5738278
    Abstract: An anchor sleeve for a composite anchor is threaded in its inside surface and is anchored by at least one of an organic and inorganic mortar in a borehole formed in a concrete tie for rails or in a similar receiving material. The inside threaded sleeve (2) forms a load engagement means for an attachment member and is located in a trailing end region of the sleeve. The sleeve has two concentrically and consecutively arranged sealing elements (7, 9) at an opposite leading end of the sleeve and the sealing elements close off the leading end of the sleeve in a liquid-type manner. The sealing elements (7, 9) can be consecutively displaced out of sealing engagement at the leading end of the sleeve (2). In addition, a method for corrosion resistant anchorages employs the anchor sleeve.
    Type: Grant
    Filed: January 7, 1997
    Date of Patent: April 14, 1998
    Assignee: Hilti Aktiengesellschaft
    Inventors: Popp Franz, Rudolph Martin