Patents by Inventor Walter A. Zemaitis

Walter A. Zemaitis 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).

  • Air filter assemblies and a frustoconical air filter element for use with the assemblies
    Patent number: 5549722
    Abstract: An arrangement for an air filter includes in one embodiment an air filter housing having a removable portion and a base portion with the base portion having an annular shoulder and the removable portion having a conical diffuser. A frustoconical filter element having a hollow core and annular seals at opposite ends is mounted in the housing. The annular seals have radially facing sealing surfaces which seal with the annular shoulder and with the diffuser. In another embodiment, the conical diffuser is mounted on a stanchion which is unitary with the base portion of the air filter housing. The frustoconical filter element is mounted on the base by receiving the stanchion and diffusion cone therethrough. The removable portion of the housing is then placed over the filter element and clamped to the base portion.
    Type: Grant
    Filed: December 30, 1994
    Date of Patent: August 27, 1996
    Assignee: Dana Corporation
    Inventors: Walter A. Zemaitis, Edward A. Covington, Roland V. Lanier, Jr., Gary U. Hovis