Patents by Inventor Harald Betz

Harald Betz 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).

  • Accordion filter pack that is bendable in only one direction
    Patent number: 5792228
    Abstract: An accordion filter pack that is bendable in only one direction and is made of a flexible filter medium, the folds of which are capped in the lateral direction at both ends by a flexible sealing strip and which can be sealed by the sealing strip with respect to a housing. The accordion filter pack is joined on its longitudinal sides to a least one reinforcing element. The reinforcing element is joined to the sealing strip and consists of a flat, flexible planar structure that extends transversely to the openings of the folds.
    Type: Grant
    Filed: October 10, 1996
    Date of Patent: August 11, 1998
    Assignee: Firma Carl Fruedenberg
    Inventors: Jurgen Fath, Harald Betz