Patents by Inventor Gottfried Loeser

Gottfried Loeser 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).

  • Drilling device with telescopic Kellybar
    Patent number: 5501287
    Abstract: The drilling device includes a telescopable Kellybar (16) with an outer tube (17) and at least one telescope tube (18). A tool (22) is mounted to the lower end of the telescope tube (18). In order to supply pressure medium to the drilling tool (22), the telescope tube (18) includes an inner tube (25) which is connected to a pressure line (33) via a rotating head (30). In order to secure the stator of the rotating head against rotation, a rotation protecting means (36) is provided which projects into the outer tube (17). Without exchanging the drilling mast, the drilling device can be used for drill hole depths greater than the length of the drilling mast (10); nevertheless, it can be used with pressure fluid as flushing agent or driving agent for a tool.
    Type: Grant
    Filed: September 8, 1994
    Date of Patent: March 26, 1996
    Assignee: Ing. G. Klemm Bohrtechnik GmbH
    Inventor: Gottfried Loeser