Patents by Inventor Mark Hayles

Mark Hayles 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).

  • Safety pressure relief device
    Patent number: 7234481
    Abstract: A safety pressure relief device comprises an annular flange portion (22), a concave/convex dome portion (24) and a transition portion (26) between the flange portion (22) and the dome portion (24), the transition portion (26) comprising a linear extent (28) extending from the annular flange portion (22) at a first acute angle (?1) to the plane of the flange portion (22), a tangent to the dome portion (24) at its junction with the transition portion (26) making a second acute angle (?2) with the plane of the flange portion (22) which is greater than said first angle (?1), a line of weakness being formed in and around part at least of the linear extent (28) of the transition portion (26).
    Type: Grant
    Filed: October 4, 2002
    Date of Patent: June 26, 2007
    Assignee: Elfab Limited
    Inventors: Thomas Henderson, Phillip G. Coulson, Mark Hayles
  • Safety pressure relief device
    Publication number: 20050067010
    Abstract: A safety pressure relief device comprises an annular flange portion (22), a concave/convex dome portion (24) and a transition portion (26) between the flange portion (22) and the dome portion (24), the transition portion (26) comprising a linear extent (28) extending from the annular flange portion (22) at a first acute angle (?1) to the plane of the flange portion (22), a tangent to the dome portion (24) at its junction with the transition portion (26) making a second acute angle (?2) with the plane of the flange portion (22) which is greater than said first angle (?1), a line of weakness being formed in and around part at least of the linear extent (28) of the transition portion (26).
    Type: Application
    Filed: October 4, 2002
    Publication date: March 31, 2005
    Inventors: Thomas Henderson, Phillip Coulson, Mark Hayles