Patents by Inventor Andrew Fraser Barr

Andrew Fraser Barr 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).

  • Apparatus for the removal of sludge
    Patent number: 10208454
    Abstract: Apparatus for removing sludge from an underwater deposit comprises a blade having a cutting edge that points forwards and a blade surface to the rear of the cutting edge that faces the interior of a housing. Nozzles are positioned and oriented to direct jets of water onto the blade surface to fluidize sludge that has been cut by the blade. The jets have a component of motion in the rearward direction relative to the blade surface, whereby the fluidized sludge is effectively contained within the housing and high collection rates can be achieved. The apparatus can be adapted for horizontal use over the surface of a sludge deposit or for movement in any direction through a bulk sludge deposit.
    Type: Grant
    Filed: November 17, 2014
    Date of Patent: February 19, 2019
    Assignee: BARRNON LTD.
    Inventor: Andrew Fraser Barr
  • APPARATUS FOR THE REMOVAL OF SLUDGE
    Publication number: 20170073928
    Abstract: Apparatus for removing sludge from an underwater deposit comprises a blade having a cutting edge that points forwards and a blade surface to the rear of the cutting edge that faces the interior of a housing. Nozzles are positioned and oriented to direct jets of water onto the blade surface to fluidize sludge that has been cut by the blade. The jets have a component of motion in the rearward direction relative to the blade surface, whereby the fluidized sludge is effectively contained within the housing and high collection rates can be achieved. The apparatus can be adapted for horizontal use over the surface of a sludge deposit or for movement in any direction through a bulk sludge deposit.
    Type: Application
    Filed: November 17, 2014
    Publication date: March 16, 2017
    Applicant: Barnon Ltd
    Inventor: Andrew Fraser Barr