Patents Assigned to River Don Castings Limited
  • Cast nodes and patterns for their production
    Patent number: 5884686
    Abstract: A pattern from which cast nodes can be produced, the pattern including a central ring or disc against which one or more stubs abut at selected stations to enable nodes of differing annular geometries and/or stub diameter to be produced from the same pattern.
    Type: Grant
    Filed: July 21, 1997
    Date of Patent: March 23, 1999
    Assignee: River Don Castings Limited
    Inventor: Anthony Wood
  • Lifting devices
    Patent number: 5735563
    Abstract: A lifting device for a steel structure includes a releasable or integrally formed pin to which a shackle or spreader bar assembly can be secured thereby removing the need for conventional bollards or inset sheaves. The lifting device includes stub members, extending from a column member of the device, which secure the device to the steel structure.
    Type: Grant
    Filed: November 15, 1996
    Date of Patent: April 7, 1998
    Assignee: River Don Castings Limited
    Inventor: Anthony Wood
  • Load lifting apparatus
    Patent number: 4921291
    Abstract: A padear for lifting heavy structures, includes at least two separable sections which, on assembly, embrace a component of the structure to be lifted. At least one bollard protrudes outwardly from the external circumference of the padear to receive a lifting cable. The padear is preferably separable along at least one substantially radial plane which passes through the or each bollard to divide the same into two sections.
    Type: Grant
    Filed: July 20, 1988
    Date of Patent: May 1, 1990
    Assignee: River Don Castings Limited
    Inventor: Anthony M. Wood