Patents Assigned to Norsk Spennbetong A/S
  • Joining device especially for concrete piles
    Patent number: 5032041
    Abstract: A joining device, especially for concrete piles, comprises at least one wedge (12). In order to provide a joining device which is strong, cheap in production and very simple in use, at least the one pile end has a female joint (2) for receiving a male joint or a male joint similar tension body (10) at the during the joining adjacent co-operating pile end. The female joint(s) (2) and the male joint/the male joint similar tension body (10) have through-going cavities or holes (9',11) for at least one common lateral wedge (12).
    Type: Grant
    Filed: February 12, 1990
    Date of Patent: July 16, 1991
    Assignee: Norsk Spennbetong A/S
    Inventor: Sven A. Sinnes