Patents Assigned to Newclean Engineering Limited
  • Extraction apparatus
    Patent number: 3930817
    Abstract: A mobile dust extraction apparatus having a self cleaning filter feature has an extractor blower in fixed position; a lower storage chamber having a valved inlet at one end; an upper plenum chamber having a valved outlet at one end and a valved vent at the other, a filter between the storage and plenum chambers and a detachable connection between the blower and the plenum chamber so that the plenum and storage chambers may be moved relative to the blower.
    Type: Grant
    Filed: April 24, 1974
    Date of Patent: January 6, 1976
    Assignee: Newclean Engineering Limited
    Inventors: Kenneth Thomas Stevenson, George Alfred Wesson, George Armine Newell