Patents by Inventor Alfred Hänggli

Alfred Hänggli 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).

  • Connector for tubular muntin bars
    Patent number: 7464514
    Abstract: The present invention discloses a connector for easily connecting tubular muntin bars. This connector can be slipped into an opening of one muntin bar so that both ends will be anchored in the interior of that muntin bar. Then, by moving in one direction, the lever can be slipped into the interior of another muntin bar, and, by moving in an opposite direction the protrusion can be slipped into the interior of the other muntin bar. With the connector such placed, slight pressure on the muntin bars will lock the lever, so that the connector firmly connects the muntin bars.
    Type: Grant
    Filed: February 20, 2007
    Date of Patent: December 16, 2008
    Inventor: Alfred Hänggli