Patents by Inventor Erwin Esterl

Erwin Esterl 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).

  • Process and arrangement for proportioning viscous material
    Patent number: 6092691
    Abstract: In order to obtain an optimal application of viscous material, such as an adhesive or a sealing agent. The process and apparatus combines the proportional metering device and the outlet valve to form a constructional unit. A static mixing tube is integrated into the filling opening. The feed pipe is partially tempered and therefore maintains the viscous material situated in the feed pipe at a constant temperature.
    Type: Grant
    Filed: March 25, 1998
    Date of Patent: July 25, 2000
    Assignees: Bayerische Motoren Werke Aktiengesellschaft, Intec Bielenberg GmbH & Co
    Inventors: Frank Schuerholz, Erwin Esterl, Manfred Lehmann