Patents by Inventor Willi Solzer

Willi Solzer 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).

  • Tubular filter element with biasing element and method of making
    Patent number: 4861479
    Abstract: A tubular filter element for liquid filters comprises a perforated support pipe. Disposed around the inside of the support pipe is a tubular filter layer which comprises a folded sheet of filter material. Within each end of the filter element a spring washer is disposed for biasing the end of the tubular filter layer outwardly against the inside of the support pipe. In this pre-biased state, the ends of the filter element are joined to disks by means of a hardenable casting material.
    Type: Grant
    Filed: September 26, 1988
    Date of Patent: August 29, 1989
    Assignee: Faudi Feinbau GmbH
    Inventor: Willi Solzer