Patents by Inventor Henry Garfield

Henry Garfield 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).

  • Construction of canister-type filters
    Patent number: 5102542
    Abstract: Compound filters using two different filter element types are disclosed. When a carbon element is used it is of the concentric type having a central cavity. Filter elements for filtering very fine particles are used in addition. Various types of such elements, including hollow fiber elements, are disposed in a lower portion and/or upper portion. Flow control arrangements, improved filter element removal arrangements, improved filter sealing arrangements, accommodations for filter elements having different lengths and tolerances and filter arrangements for preventing liquid flow when no filter element is present are described.
    Type: Grant
    Filed: January 25, 1990
    Date of Patent: April 7, 1992
    Assignee: Electrolux Water Systems, Inc.
    Inventors: Randall K. Lawrence, Maurice Lallier, Henry Garfield, Mark S. Howie