Patents Assigned to PSC Freyssinet Limited
  • Tendons for post-tensioned pre-stressed concrete structures
    Patent number: 4631883
    Abstract: A tendon for post-tensioned pre-stressed concrete structures in which between the strand and sheath there is provided, in quiescent condition, a latent hardenable material and an activator therefor so that when the strand is tensioned the activator is activated to commence the hardening process of the hardenable material and produce a bonded tendon.
    Type: Grant
    Filed: May 17, 1984
    Date of Patent: December 30, 1986
    Assignee: PSC Freyssinet Limited
    Inventors: Alan J. Harris, Gordon E. R. Wright