Method for insulation of curved surfaces

• US 4,004,394 A
• Filed: 10/15/1974
• Issued: 01/25/1977
• Est. Priority Date: 10/15/1974
• Status: Expired due to Term

• Current Assignee: The Dow Chemical Company (Dow, Inc.)
• Original Assignee: The Dow Chemical Company (Dow, Inc.)
• Inventors: Bennett, Robert B.
• Primary Examiner(s): Perham, Alfred C.
• Application Number:
  US05/514,682
• Time in Patent Office: 833 Days
• Field of Search: 52/741, 52/746, 52/747, 52/249, 52/248, 52/385, 52/506, 52/511, 52/268, 52/267, 52/269, 220/9 R, 220/63 R, 29/513, 138/147-149
• US Class Current: 52/741.4
• CPC Class Codes: B65D 90/06 Coverings, e.g. for insulating purposes
• CPC Class Codes: Y10S 220/902 Foam
• CPC Class Codes: Y10T 29/49922 by bending over projecting prongs

Abstract

Insulating members such as plastic foamed boards or panels are positioned on curved surfaces by affixing the panels or planks to strap members attached to and positioned adjacent the surface to be insulated. This technique is particularly suitable for the insulation of tanks and like containers.

Claims

1. A method for the fabrication of an insulated structure, the structure having an external convex curved surface to which thermal insulation is to be applied, the steps of the method consisting essentially of affixing to the convex curved surface to be insulated a plurality of sheet metal bands, at least some of the bands extending in generally parallel relationship, disposing malleable sheet metal blanks beneath the bands bending the blanks to form legs extending away from the surface, disposing a plurality of insulating panels on the curved surface to be insulated and retaining the insulating members thereon by means of bending said legs over adjacent insulating members.

2. The method of claim 1 wherein the structure is a tank.

3. The method of claim 1 including the step of disposing a batten strip on joints formed by at least some of the adjacent insulating members.