Patents by Inventor Ronald W. Hammond

Ronald W. Hammond 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).

  • Filter device with top access to filter bag
    Patent number: 4220459
    Abstract: A filter device of the bag type in which the bags extend from openings through a cell plate and in which the invention is addressed to means for releasably mounting the filter bag to the cell plate with access from the clean side of the filter bags and includes a relatively rigid ring member secured to the open end of the filter bag and a cup member fixed to the cell plate for receiving the ring supporting end portion of the bag in gripping relation therein.
    Type: Grant
    Filed: October 16, 1978
    Date of Patent: September 2, 1980
    Assignee: Wheelabrator-Frye Inc.
    Inventors: Ronald W. Hammond, J. Howard Conley