Patents by Inventor Julius Ehrlich

Julius Ehrlich 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).

  • Weld joint between two rails arranged behind each other along a rail track
    Patent number: 5605283
    Abstract: Two rail sections are joined by a weld joint (5) between two rails (1,2) arranged one behind another in a lengthwise direction of a rail track (4) and a method for the production of this weld joint (5). The frontal ends (6,7) of the rails (1,2) which are facing each other are connected with one another by a filler material (8), which extends from the rail foot (32) to the rail head (30). The weld joint (5) is composed of a welding zone (22, 23, 24, 25) which connects the rail foot (32), the stem of the rail (31) and the rail head (30). The welding zones (22 to 25) are connected in a form-locking manner in the contact areas (33 to 36) immediately facing each other. Furthermore, the welding zone (22) of the rail head (30) consists of less than 15 neighbouring, molten beads (26) preferably situated one above another and approximately running parallel to each other.
    Type: Grant
    Filed: January 16, 1996
    Date of Patent: February 25, 1997
    Assignee: Fronius Schweissmaschinen KG. Austria
    Inventors: Robert Lahnsteiner, Julius Ehrlich