Patents by Inventor Harald Ristau

Harald Ristau 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).

  • Suction-type holding device
    Patent number: 7690610
    Abstract: The invention relates to a suction-type holding device (1) to be fixed to fastening surfaces (17). Said holding device comprises a hollow suction base (2) that is open towards the fastening surface (17) and encompasses a central piece (11), and a sealing edge (5) which is provided with an elastic material at least towards the fastening surface (17) and can be placed on the fastening surface (17) along with the suction base (2) such that a suction chamber (30) that is gas-tight sealed towards the outside is embodied between the bottom face (9) of the suction base (2) and the fastening surface (17). The inventive suction-type holding device (1) further comprises contact pressure transmitters (8) and pressing means (18) for transmitting the contact pressure to the wall (7) of the suction base, thus applying additional contact pressure used for firmly attaching the suction-type holding device.
    Type: Grant
    Filed: February 9, 2005
    Date of Patent: April 6, 2010
    Inventor: Harald Ristau
  • Suction-Type Holding Device
    Publication number: 20070241246
    Abstract: The invention relates to a suction-type holding device (1) to be fixed to fastening surfaces (17). Said holding device comprises a hollow suction base (2) that is open towards the fastening surface (17) and encompasses a central piece (11), and a sealing edge (5) which is provided with an elastic material at least towards the fastening surface (17) and can be placed on the fastening surface (17) along with the suction base (2) such that a suction chamber (30) that is gas-tight sealed towards the outside is embodied between the bottom face (9) of the suction base (2) and the fastening surface (17). The inventive suction-type holding device (1) further comprises contact pressure transmitters (8) and pressing means (18) for transmitting the contact pressure to the wall (7) of the suction base, thus applying additional contact pressure used for firmly attaching the suction-type holding device.
    Type: Application
    Filed: February 9, 2005
    Publication date: October 18, 2007
    Inventor: Harald Ristau
  • Shopping bag to be attached in a shopping cart
    Publication number: 20050205632
    Abstract: The present invention relates to a shopping bag having handles and hooks to be attached and stretched out in or on diametrically opposite side walls of a shopping cart.
    Type: Application
    Filed: September 19, 2003
    Publication date: September 22, 2005
    Inventor: Harald Ristau
  • Low-pressure holding device
    Patent number: 6827344
    Abstract: The invention relates to a low-pressure holding device (1) with a low-pressure chamber (5) and a valve (9) for the permanent hold on gas-impermeable surfaces (14). The low-pressure holding device is fixed to a supporting surface by means of a piston suction pipe (13) which is detachably connected to the inventive device. The low-pressure holding device can be provided with a receptacle for holding appliances (2).
    Type: Grant
    Filed: March 14, 2002
    Date of Patent: December 7, 2004
    Inventor: Harald Ristau