Patents Assigned to PMB Systems Engineering Limited
  • Patent number: 4735450
    Abstract: A lifting attachment for lifting a heavy load comprises a generally cylindrical member (7,30) which may be a post passing through a hole in the load, or a sleeve fitting over a post (6) fixed to the load. To retain a lifting sling, the member (7,30) has a radially projecting retaining flange (8), that extends circumferentially at least partly around it; the flange (8) has a curved shaped with wings (12) curving upwardly from its lowermost portion, so that an increasing amount of the flange (8) contacts the sling as the angle of approach of the sling to the sleeve becomes more acute. The flange (8) and member (7,30) may be a re-usable one-piece casting. Apparatus is also provided for test-loading the lifting attachment.
    Type: Grant
    Filed: November 3, 1986
    Date of Patent: April 5, 1988
    Assignee: PMB Systems Engineering, Limited
    Inventor: Derek T. Fern
  • Patent number: 4639166
    Abstract: A jacket of an offshore platform has a special internal structure of which one side coincides with one side of the jacket but an opposite side is spaced from the corresponding opposite outer side of the jacket. The jacket is made by a rolling-up process while lying recumbent, the special internal structure being made first and then being used to provide the reaction points for the rolling-up of outer-side-forming trusses of the jacket, which are of greater height, when erected, than the special internal structure and carry angle parts which are to form the said outer opposite outer side of the jacket.
    Type: Grant
    Filed: April 17, 1985
    Date of Patent: January 27, 1987
    Assignee: PMB Systems Engineering Limited
    Inventor: Derek T. Fern