Vault Type Patents (Class 4/474)
Ventilated (Class 4/475)
  • Toilet riser
    Patent number: 5983415
    Abstract: A toilet riser, for use in restroom buildings, has a generally tubular shape and a hollow, double-walled construction. Liquid-tight walls define an empty chamber. The riser is formed from cross-linked polyethylene in a multi-part mold having smooth cavity surfaces so that all external surfaces of the riser are smooth and easy to clean.
    Type: Grant
    Filed: May 19, 1998
    Date of Patent: November 16, 1999
    Assignee: Romtec, Inc.
    Inventor: David B. Bogan