Patents Assigned to Hyperlast Limited
  • Patent number: 6354512
    Abstract: A method of making a polymer coated rail in which a rail to be coated (10) is positioned on a mould base (11) in an inverted manner, so that the head (12) of the rail is immediately adjacent the base plate (11). Then, mould side pieces (13, 14) are secured to the base plate (11) to run parallel to the side of the rail (10). Antislip material such as bauxite or granite chippings (21) are positioned in the mould so that they lie on the base plate (11), and then the liquid polymer is poured into the mould to fill the spaces (19, 20) and so encapsulate the rail (10). The polymer is poured into the mould, until its surface (22) covers the foot (23) of the rail. In this state, the polymer is allowed to cure, so that it solidifies, and once the side plates (13, 14) have been removed, the rail together with its polymer coating can be lifted from the base plate (11).
    Type: Grant
    Filed: June 18, 2001
    Date of Patent: March 12, 2002
    Assignees: Hyperlast Limited, ALH Rail Coatings Limited
    Inventor: Robert Paul Vennell
  • Patent number: 5935713
    Abstract: A composite material resistant to armour piercing bullets consisting of a highly elastic polyurethane matrix into which is embedded aggregate, preferably in the form of rounded pebbles having an average screened size range of from about 20 mm to about 60 mm.
    Type: Grant
    Filed: July 14, 1997
    Date of Patent: August 10, 1999
    Assignee: Hyperlast Limited
    Inventor: William Sharples