Patents by Inventor Friedhelm Hotte

Friedhelm Hotte 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).

  • Device for measuring friction and wear under surrounding high pressure
    Patent number: 3939690
    Abstract: A device for performing friction and wear tests inside a closed high-pressure autoclave under additional surrounding high pressure adjustable from the outside, wherein a test element arranged inside the autoclave is rotated by means of a driving shaft passed in a pressure-tight manner through the wall of the autoclave into the latter, a contact pressure in the form of an additional unidirectional load is exerted on the test element by means of a unit arranged inside the autoclave, and both the contact pressure and the torsional moment acting on the test element are determined and indicated outside the autoclave.
    Type: Grant
    Filed: April 16, 1974
    Date of Patent: February 24, 1976
    Assignee: Edward Kuss
    Inventors: Eduard Kuss, Friedhelm Hotte