Patents Assigned to Colorcraft, Inc.
  • Patent number: 5220757
    Abstract: A thermal stairway cover is disclosed for insulating a stairway opening containing a pull-down, ceiling stairway leading to an attic. A plate is movable between a first position which closes the cover and reduces heat transfer therethrough and a second position where the cover is open to provide access through the stairway opening to the attic.
    Type: Grant
    Filed: October 15, 1991
    Date of Patent: June 22, 1993
    Assignee: Colorcraft, Inc.
    Inventor: Jeffrey A. Hulligan