Patents Assigned to RHC Investments Ltd.
  • Interlocking roofcurb joint
    Patent number: 5016406
    Abstract: This invention relates to a novel roof curb which can be constructed from modular components by interlocking joints. An interlocking joint for a roof curb which comprises a male joint member secured to the inner face of a first curb section, and a female joint member secured to the inner face of a second curb section, the male joint member and female joint member being adapted to mate with one another and arrange the first curb section and the second curb section at right angles with one another.
    Type: Grant
    Filed: February 14, 1990
    Date of Patent: May 21, 1991
    Assignees: TNS Holdings Ltd., RHC Investments Ltd.
    Inventors: Bruce T. Calam, Rudy Karlowee