Patents by Inventor Andrew Mark Cotterill

Andrew Mark Cotterill 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: 5676829
    Abstract: A screen assembly is described which comprises a flow channel along which sewage is intended to flow, in use, a continuous flexible belt entrained around roller or wheel means and projecting into the channel, and means for driving the belt. The belt is perforated such that relatively large solids carried along the flow channel in the sewage are trapped by the belt adhering thereto due to a pressure differential across the belt. Movement of the belt lifts such solids from the flow channel. The belt is of thickness less than or equal to 1 mm.
    Type: Grant
    Filed: February 21, 1996
    Date of Patent: October 14, 1997
    Assignee: Jones & Attwood Limited
    Inventor: Andrew Mark Cotterill