Patents by Inventor Manfred Dorr

Manfred Dorr 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: 5842589
    Abstract: A crane, in particular railbound mobile crane, with a luffing jib telescoping at both sides which can be swung up and down as well as raised and lowered with its base boom. The boom is supported in its end regions at the vehicle on a swivel bearing which can be raised and lowered. The luffing jib is swivelable about vertical axes in the region of the swivel bearings. For this purpose, every swivel bearing is supported at one of two separate multiple-axle traveling mechanisms so as to be displaceable traverse to the longitudinal axis of the mobile crane. The two traveling mechanisms are coupled with one another via the base boom of the luffing jib, which base boom is connected with the swivel bearings.
    Type: Grant
    Filed: December 18, 1997
    Date of Patent: December 1, 1998
    Assignee: Mannesmann Aktiengesellshaft
    Inventors: Joachim Kroll, Peter Richter, Manfred Dorre
  • Patent number: 4330900
    Abstract: A vacuum cleaner has a housing with an inlet which can be closed by a cover. A dust bag can be installed in the housing suspended from a plate which is located inwardly of the cover and has two openings both of which communicate with the interior of the bag. The cover carries a suction nipple which sealingly enters one of the openings when the cover is closed. A connecting nipple is also carried by the cover and sealingly enters the other opening when the cover is closed. The entire connecting nipple, or a diaphragm mounted in the same, moves in direction towards the cover when, in response to increasing filling of the bag and clogging of the filter pores thereof, the pressure in the bag rises to a level higher than the pressure at the other side of the connecting nipple or diaphragm, respectively. This movement is transmitted to an indicator observable from the exterior of the vacuum cleaner and provides an indication of the degree to which the bag is filled.
    Type: Grant
    Filed: June 6, 1980
    Date of Patent: May 25, 1982
    Assignee: Vorwerk & Co. Interholding GmbH
    Inventors: Manfred Dorr, Georg Haase, Paul-Ulrich Uibel
  • Patent number: 4286885
    Abstract: A filler cap for the container of a household mixer with a locking arrangement including a filler tube with a filling opening to receive the products to be mixed, which is arranged concentrically to the axis of rotation of the mixer and a sealing ring. The filler tube is provided with ribs tangently positioned to the filling opening and extending from the filling opening to the sealing ring which is positioned at a lower side of the filler tube. In operation the ribs produce an effect tending to hold the filler cap in its position on the container.
    Type: Grant
    Filed: December 31, 1979
    Date of Patent: September 1, 1981
    Assignee: Vorwerk & Co. Interholding GmbH
    Inventors: Paul-Ulrich Uibel, Manfred Dorr