Patents by Inventor Michael K. Conwell

Michael K. Conwell 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).

  • Patent number: 9149743
    Abstract: An apparatus for dewatering slurry utilizes a vertical skeletal retainer framework, having a top end and a bottom end, into which rigid filter plates, a geotextile filter bag, and/or other filter is installed. The vertical orientation employs gravity to induce maximum drainage, with water in the slurry filtering through the plates or bag and falling downwardly. At the bottom end of the framework, doors or gates facilitate selective holding, and emptying of, dewatered solids. A support structure permits a transport vehicle or hopper to be positioned under the framework for collection and removal of dewatered solids. After removal of its contents, the bag can be pressure washed from the outside and potentially reused. The apparatus may be portable, with the framework being pivotable on a wheeled base.
    Type: Grant
    Filed: November 15, 2011
    Date of Patent: October 6, 2015
    Inventor: Michael K. Conwell
  • Publication number: 20120055861
    Abstract: An apparatus for dewatering slurry utilizes a vertical skeletal retainer framework, having a top end and a bottom end, into which rigid filter plates, a geotextile filter bag, and/or other filter is installed. The vertical orientation employs gravity to induce maximum drainage, with water in the slurry filtering through the plates or bag and falling downwardly. At the bottom end of the framework, doors or gates facilitate selective holding, and emptying of, dewatered solids. A support structure permits a transport vehicle or hopper to be positioned under the framework for collection and removal of dewatered solids. After removal of its contents, the bag can be pressure washed from the outside and potentially reused. The apparatus may be portable, with the framework being pivotable on a wheeled base.
    Type: Application
    Filed: November 15, 2011
    Publication date: March 8, 2012
    Inventor: Michael K. Conwell
  • Patent number: 8070960
    Abstract: A method of dewatering a solids laden waste stream, whereby the slurry is pumped into a vertical filter retaining structure and the liquid is allowed to flow out through the pores of the filtration element while retaining the solids within the structure. After the solids have dewatered, doors or gates located at the bottom of the structure are opened and the solids drop out the bottom by gravity. The structure is elevated to allow a transport vehicle to be placed under the doors prior to dropping out the solids. One embodiment utilizes an open bottom, closed top filter bag that is closed off by the doors or sliding gates located at the bottom of the structure. Another embodiment disclosed would use rigid filter plates to retain the solids and drop out the accumulated solids by opening sliding gates at the bottom of the structure. The filter bag or plates is accessible from the side to allow either manual or automatic pressure washing of the filtration elements or filter bag after each dewatering cycle.
    Type: Grant
    Filed: September 22, 2008
    Date of Patent: December 6, 2011
    Inventor: Michael K. Conwell
  • Publication number: 20090314715
    Abstract: A method of dewatering a solids laden waste stream, whereby the slurry is pumped into a vertical filter retaining structure and the liquid is allowed to flow out through the pores of the filtration element while retaining the solids within the structure. After the solids have dewatered, doors or gates located at the bottom of the structure are opened and the solids drop out the bottom by gravity. The structure is elevated to allow a transport vehicle to be placed under the doors prior to dropping out the solids. One embodiment utilizes an open bottom, closed top filter bag that is closed off by the doors or sliding gates located at the bottom of the structure. Another embodiment disclosed would use rigid filter plates to retain the solids and drop out the accumulated solids by opening sliding gates at the bottom of the structure. The filter bag or plates is accessible from the side to allow either manual or automatic pressure washing of the filtration elements or filter bag after each dewatering cycle.
    Type: Application
    Filed: September 22, 2008
    Publication date: December 24, 2009
    Inventor: Michael K. Conwell