Patents by Inventor Jurgen Kemmer

Jurgen Kemmer 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).

  • Patent number: 8545364
    Abstract: A gear set arrangement for a planetary transmission comprising at least first and second simple planetary gear sets, each having sun and ring gears and a carrier supporting planetary gears. The gear sets are coaxially nested with the first gear set being radially within the sun gear of the second gear set in a common radial plane or radial planes which are only slightly axially offset. The ring gear of the inner first gear set and the sun gear of the outer second gear set, and the carriers of the two gear sets, are coupled in a fixed manner. To avoid forced movement of the gears, only one of the sun gear, the ring gear or the carrier, of each of the first and the second gear sets is radially supported substantially free of radial play on a centrally disposed transmission shaft or with respect to a centered supported component.
    Type: Grant
    Filed: May 19, 2010
    Date of Patent: October 1, 2013
    Assignee: ZF Friedrichshafen AG
    Inventors: Peter Ziemer, Hagen Dopfert, Jurgen Kemmer
  • Patent number: 6533990
    Abstract: In the apparatus for distilling molten baths, substantially comprising a two-part vacuum tank (2), a melting crucible (5) disposed in the bottom housing part (3) of the vacuum tank and surrounded by a heating coil (4), a hat-shaped metal vapor condenser (8) held in the top housing part (6) of the vacuum tank (2), and a draining channel (10) disposed between the melting crucible (5) and the metal vapor condenser (8), a filter element (16) penetrated by a metal vapor thermometer (19) plus probe (20) is provided above the metal vapor condenser (8) in an opening (15) of the top housing part (6), wherein both the filter pot (17) surrounding the filter element (16), as well as the space (22) behind the coil, as well as the top housing part (6) are connected by separate individual vacuum lines (18, 23, 25) to a vacuum source (7).
    Type: Grant
    Filed: June 26, 2002
    Date of Patent: March 18, 2003
    Assignee: Ald Vacuum Technologies AG
    Inventors: Ivaylo Popov, Hans-Jürgen Kemmer, Harald Scholz
  • Publication number: 20030025253
    Abstract: In the apparatus for distilling molten baths, substantially comprising a two-part vacuum tank (2), a melting crucible (5) disposed in the bottom housing part (3) of the vacuum tank and surrounded by a heating coil (4), a hat-shaped metal vapor condenser (8) held in the top housing part (6) of the vacuum tank (2), and a draining channel (10) disposed between the melting crucible (5) and the metal vapor condenser (8), a filter element (16) penetrated by a metal vapor thermometer (19) plus probe (20) is provided above the metal vapor condenser (8) in an opening (15) of the top housing part (6), wherein both the filter pot (17) surrounding the filter element (16), as well as the space (22) behind the coil, as well as the top housing part (6) are connected by separate individual vacuum lines (18, 23, 25) to a vacuum source (7).
    Type: Application
    Filed: June 26, 2002
    Publication date: February 6, 2003
    Inventors: Ivaylo Popov, Hans-Jurgen Kemmer, Harald Scholz