Patents by Inventor Gerhard Gro?e Veldmann

Gerhard Gro?e Veldmann 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).

  • Handling device for drill rods and so-called top drive having such a handling device
    Patent number: 9376873
    Abstract: The invention relates to a handling unit for drill rods having an elevator bracket (30) which can be swiveled by means of a tilt arm (34) under the influence of a tilt cylinder (32), and means (42) for detecting a position of the at least one elevator bracket (30), in which is provided at least one valve (50) as means for detecting the position of the or each elevator bracket (30) and as part of a hydraulic switching control circuit (54) which continues outside the handling unit, and at least one connecting member (52) for the at least one valve (50), which connecting member can be moved by a movement of the tilt arm (34), wherein the or each valve (50) opens or closes the hydraulic switching control circuit (54) such that the state of the switching control circuit (54) can be evaluated as position information.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: June 28, 2016
    Assignee: Bentec GmbH Drilling & Oilfield Systems
    Inventors: Johannes Moss, Heiko Schmidt, Gerhard Groβe Veldmann