Patents by Inventor Uwe Kaser

Uwe Kaser 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).

  • Door closer
    Patent number: 5850671
    Abstract: A hydraulically damped door closer is described which has a relatively weak closer spring (3c) and stronger back-up closer springs (3a, 3b). If, after a predetermined time period, the door does not arrive in the closed position under the effect of the closer spring (3c), the back-up closer springs (3a, 3b) are connected for the closing. Their connection is therefore controlled by way of a time function element, which represents a simple and, at the same time, reliable control.
    Type: Grant
    Filed: October 28, 1997
    Date of Patent: December 22, 1998
    Assignee: GEZE GmbH & Co.
    Inventor: Uwe Kaser