Patents Assigned to Hankin-Baker Limited
  • Precast chimney system
    Patent number: 4104868
    Abstract: There is provided a method of constructing a chimney, which includes the steps of providing an inner precast lining composed of interfitting segments stacked vertically, providing a precast concrete outer wall composed of interfitting segments in stacked relationship surrounding the lining but spaced outwardly therefrom to define an interstitial gap, providing longitudinal reinforcing steel bars within the interstitial gap, and pouring in situ concrete into the interstitial gap and allowing the concrete to harden.
    Type: Grant
    Filed: June 17, 1977
    Date of Patent: August 8, 1978
    Assignee: Hankin-Baker Limited
    Inventor: Kenneth Roy Jackson