Patents by Inventor William J. MacWilliam

William J. MacWilliam 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).

  • Filtration apparatus for use with drainage structures and method for installing the same
    Patent number: 10294655
    Abstract: A filtration apparatus for use with drainage structures and a method for installing the same are provided. The filtration apparatus has a first grate and a second grate, which, when installed and secured together, establish a filtration barrier between the inlet and bottom of a drainage structure for filtering stormwater runoff entering the drainage structure. The first grate and second grate are secured to internal walls of the drainage structure via anchoring members. The anchoring members allow each of the grates to rotate to facilitate transition of each grate from a hanging to a suspended position. A connecting member secures the first grate and the second grate together so that the grates bisect the cavity of the drainage structure.
    Type: Grant
    Filed: February 27, 2017
    Date of Patent: May 21, 2019
    Inventors: John E. Murphy, III, David A. Jones, William J. MacWilliam
  • FILTRATION APPARATUS FOR USE WITH DRAINAGE STRUCTURES AND METHOD FOR INSTALLING THE SAME
    Publication number: 20170247873
    Abstract: A filtration apparatus for use with drainage structures and a method for installing the same are provided. The filtration apparatus has a first grate and a second grate, which, when installed and secured together, establish a filtration barrier between the inlet and bottom of a drainage structure for filtering stormwater runoff entering the drainage structure. The first grate and second grate are secured to internal walls of the drainage structure via anchoring members. The anchoring members allow each of the grates to rotate to facilitate transition of each grate from a hanging to a suspended position. A connecting member secures the first grate and the second grate together so that the grates bisect the cavity of the drainage structure.
    Type: Application
    Filed: February 27, 2017
    Publication date: August 31, 2017
    Inventors: John E. Murphy, III, David A. Jones, William J. MacWilliam