Patents Assigned to EHL Limited
  • Publication number: 20180023280
    Abstract: A storm water drain filter including a collapsible frame supporting a filter bag. The filter may be installed in a stormwater drain pit to capture contaminants and particulate matter before it enters a stormwater drain. The collapsible frame is light weight, compact, simple and inexpensive. The filter bag is secured to the frame so as to maintain its shape and avoid deformation. There is also disclosed a method of installing a stormwater drain filter in a stormwater drain pit to provide an effective seal between the stormwater drain filter and the pit.
    Type: Application
    Filed: March 15, 2017
    Publication date: January 25, 2018
    Applicant: EHL Limited
    Inventors: Michael Morton Hannah, Gregory Paul Yeoman, Gary John Lawford, Nicholas Alan Vigar
  • Patent number: 9624658
    Abstract: A storm water drain filter including a collapsible frame supporting a filter bag. The filter may be installed in a stormwater drain pit to capture contaminants and particulate matter before it enters a stormwater drain. The collapsible frame is light weight, compact, simple and inexpensive. The filter bag is secured to the frame so as to maintain its shape and avoid deformation. There is also disclosed a method of installing a stormwater drain filter in a stormwater drain pit to provide an effective seal between the stormwater drain filter and the pit.
    Type: Grant
    Filed: September 16, 2011
    Date of Patent: April 18, 2017
    Assignee: EHL Limited
    Inventors: Michael Morton Hannah, Gregory Paul Yeoman, Gary John Lawford, Nicholas Alan Vigar