Patents by Inventor Bodo Waterstraat

Bodo Waterstraat 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).

  • Control flap for controlled exhaust gas recirculation and method for its production
    Patent number: 11713736
    Abstract: A control flap (1) has a flap body (2) and a circumferential seal (3) capable of sealing upon abutting to a sealing surface (7) of an opening (8). The flap body (2) and the seal (3) are made of elastomers. The seal (3) is joined to the flap body (2) by a pressure plate (4) made of a thermoplastic. The control flap may be made by a method that includes: producing the flap body (2) from a thermoplastic by injection molding; producing the pressure plate (4) from a thermoplastic by injection molding; producing the seal (3) from an elastomer by injection molding; introducing the pressure plate (4) into the undercut (10) of the seal (3); inserting the pressure plate (4) with the seal (3) into the recess (16) of the flap body (2) and bonding the pressure plate (4) and flap body (2).
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: August 1, 2023
    Assignee: Umfotec GmbH
    Inventors: Ralf Buck, Gerald Wedekind, Bodo Waterstraat, Dirk Nagel, Thomas Kaiser
  • CONTROL FLAP FOR CONTROLLED EXHAUST GAS RECIRCULATION AND METHOD FOR ITS PRODUCTION
    Publication number: 20210310449
    Abstract: A control flap (1) has a flap body (2) and a circumferential seal (3) capable of sealing upon abutting to a sealing surface (7) of an opening (8). The flap body (2) and the seal (3) are made of elastomers. The seal (3) is joined to the flap body (2) by a pressure plate (4) made of a thermoplastic. The control flap may be made by a method that includes: producing the flap body (2) from a thermoplastic by injection molding; producing the pressure plate (4) from a thermoplastic by injection molding; producing the seal (3) from an elastomer by injection molding; introducing the pressure plate (4) into the undercut (10) of the seal (3); inserting the pressure plate (4) with the seal (3) into the recess (16) of the flap body (2) and bonding the pressure plate (4) and flap body (2).
    Type: Application
    Filed: March 31, 2021
    Publication date: October 7, 2021
    Inventors: Ralf Buck, Gerald Wedekind, Bodo Waterstraat, Dirk Nagel, Thomas Kaiser