Patents by Inventor Henry Woods Martin

Henry Woods Martin 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).

  • Spin-on filter assembly incorporating a re-usable tubular filter screen
    Patent number: 5643448
    Abstract: A fluid filter cartridge is disclosed herein. The filter cartridge includes a generally tubular casing closed at one end and having at the opposite, open end, an annular member defining a filter element receiving aperture and provided with a single seal extending circumferentially of the casing and projecting axially away from the casing. The filter element includes a base ring and a generally tubular filter screen extending from the base ring to an end closure therefor. The base ring and tubular filter screen are dimensioned to fit within the filter receiving aperture. A removable connection is provided between the annular member and the base ring whereby the filter element is removably retained in the casing after rotation of the filter element about its axis relative to the axis of the casing.
    Type: Grant
    Filed: August 16, 1995
    Date of Patent: July 1, 1997
    Assignee: Glacier Metal Company Limited
    Inventors: Henry Woods Martin, Ian M. Cox, Scott A. Rodibaugh