Patents by Inventor Peter Hahnel

Peter Hahnel 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).

  • System for determining the depletion of propellant tanks onboard a spacecraft
    Patent number: 5064153
    Abstract: A system in which a surface tension device is connected at the outlet of the propellant tanks, said surface tension device having surface tension gas barrier means, the presence of gas bubbles at the inlet of said surface tension device is detected and a detect signal is produced, said detect signal indicating that the propellant tanks are empty. The detect signal then causes the spacecraft thrusters to be fed from an auxiliary propellant tank. The latter can be implemented inside a main propellant tank.
    Type: Grant
    Filed: August 21, 1989
    Date of Patent: November 12, 1991
    Assignee: Agence Spatiale Europeenne
    Inventors: Philippe Gindre, Peter Hahnel, Hartmut Helmke
  • Bearing housing, especially for a unilaterally and axially braced external-rotor motor
    Patent number: 4867581
    Abstract: In order to assure in a simple manner and with the smallest axial mounting space, a low-noise bearing support having little radial unbalance, two axial ball bearings (2, 3) are provided with a firm fit relative to the rotor shaft (1) and mutually braced axially by an interposed spring washer. Advantageously, ball bearing (3) next to the open end face of the bearing hole is designed as a stationary bearing with a press lift between its inner ring (31) and the rotor shaft (1) as well as between its outer ring (32) and the bearing hole.
    Type: Grant
    Filed: September 11, 1986
    Date of Patent: September 19, 1989
    Assignee: Siemens Aktiengesellschaft
    Inventors: Helmut Schmidt, Peter Hahnel
  • Sheet-shaped, corrosion resistant parts of apparatus
    Patent number: 4839209
    Abstract: Large parts of apparatus are manufactured from a glass fibre reinforced core (2) enclosed in a thin heat-resistant and corrosion-resistant jacket (9) of PVDF attached thereto.
    Type: Grant
    Filed: January 28, 1987
    Date of Patent: June 13, 1989
    Assignee: Bayer Aktiengesellschaft
    Inventors: Gehard Simon, Peter Hahnel, Erhard-Gunther Hoffmann