Patents by Inventor Reiner Jurgens

Reiner Jurgens 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).

  • Apparatus for making and breaking screw couplings
    Patent number: 4497224
    Abstract: Apparatus for making and breaking screw couplings between pipe members of pipe and drilling strings, includes a rotatable chuck (9) and a fixed chuck (17), the rotatable chuck being provided with a fluid reservoir (111) which maintains the pressure in the pressure-fluid-actuated chuck so that continuous rotary movement of the chuck by a torque-producer (100) is possible for the complete screwing or unscrewing of the coupling.
    Type: Grant
    Filed: August 11, 1983
    Date of Patent: February 5, 1985
    Assignee: Norton Christensen, Inc.
    Inventor: Reiner Jurgens