Patents by Inventor Erwin Stocker

Erwin Stocker 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).

  • Drill stand with a guide column
    Patent number: 4684303
    Abstract: A drill stand includes a base plate, an elongated guide column extending outwardly from the base plate and a drilling device movably supported on the column. The guide column is formed of two laterally spaced elongated support members each having the same cross-section transversely of the elongated direction. A drilling device is positioned between the two support members. A rack is secured to the guide column and a feed mechanism for moving the drilling device includes a pinion in meshed engagement with the rack. Guide members on the support members fit into correspondingly shaped guide grooves on the drilling device.
    Type: Grant
    Filed: September 17, 1985
    Date of Patent: August 4, 1987
    Assignee: Hilti Aktiengesellschaft
    Inventors: Wolfgang Erdt, Rudolf Reitberger, Erwin Stocker