Patents by Inventor Daniel Maechtle

Daniel Maechtle 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).

  • Patent number: 5282697
    Abstract: A compound anchor to affix an anchor shank in a borehole, comprising a glass cartridge (12) which can be inserted into the borehole and which receives both cement or a dry mortar and an inside container encasing water. A sealing cap (14) is present at the borehole entry and can be pierced by the anchor shank (15) and will seal the borehole at least until the binder hardens. The inside container (22) consists of container parts (26) distributed over the length of the cartridge (12) and individually destroyed as the anchor shank (15) advances into the borehole, whereby the dry mortar shall be evenly soaked with the liquid component in all depth zones of the cartridge and shall be mixed with the cartridge and inside-container splinters (FIG. 1 ).
    Type: Grant
    Filed: February 21, 1992
    Date of Patent: February 1, 1994
    Assignee: Maechtle GmbH
    Inventor: Daniel Maechtle
  • Patent number: 4938631
    Abstract: A facade anchor for incorporation into mutually aligned bore holes of a main wall and a bracket-mounted facade, consisting of an anchoring element (22) which extends from the bore hole base to the front of the facade, a pipe which extends from the bore hole inlet to the footing wall for injecting mortar, with the pipe having outlet openings (28) for mortar which are arranged inside the facade bore hole, and also of lamellar seals surrounding the pipe (22) on the inlets and outlets of the bore holes of the footing wall and facade, and of a nonuniform surface of the anchoring element for improving the bond of the injected mortar.
    Type: Grant
    Filed: July 13, 1989
    Date of Patent: July 3, 1990
    Assignee: Maechtle GmbH
    Inventors: Daniel Maechtle, Joachim Mayer
  • Patent number: 4909657
    Abstract: Straddling dowel for anchoring in a bore having an undercut, comprising an expanding shell (10) having an axial bore (12, 14), which tapers gradually towards the front, for guiding a spreader (26) and having lamellae (28), which are formed by longitudinal slots in the front section of the expanding shell, have an undercut shoulder (20) at the front end and, on their outside, are tapered towards the front in the direction of the undercut shoulder. A guide tube (30) for a setting bolt (40) for driving forward the spreader (26) is used for connection to the rearward end of the expanding shell (10), the guide tube bearing an outer stop (36) and the setting bolt bearing an outer stop (42).
    Type: Grant
    Filed: May 13, 1988
    Date of Patent: March 20, 1990
    Assignee: Maechtle GmbH
    Inventors: Daniel Maechtle, Guenter Valenta