Insulated sleeved roll
AssigneePyrotek, Inc.
InventorsDavid Leslie Hinkle, Kenneth Royce Schisler
Life of this patent
Estimating the term…
Abstract
An insulating roll comprising: a metal conduit having an outer peripheral portion; a plurality of discs having outer peripheries and preferably fabricated from an inorganic material positioned axially on and around the metal conduit; a tubular shell having an inner surface about and spaced apart from said outer peripheries; metallic foils extending between each or a plurality of said discs from said outer peripheral portion to and beyond said outer peripheries to the inner surface of said tubular shell, said metallic foils being in interference or frictional contact with said inner surface. A novel method for attaching the tubular shell to the conduit to simplify removal and replacement thereof is also described.
Claims12
An insulating roll comprising:
- A) a metal conduit having an outer peripheral portion including a working area and opposing ends;
- B) a plurality of discs having outer peripheries, fabricated from an inorganic material and defining a disc bundle positioned axially on and around the metal conduit, said disc bundle having opposing ends;
- C) a tubular shell having an inner surface about and spaced apart from said outer peripheries and including the working area and opposing ends;
- D) metallic foils between each or a plurality of said discs extending from said outer peripheral portion to and beyond said outer peripheries to but not beyond the inner surface of said tubular shell, said metallic foils being in frictional contact between said inner surface and said outer peripheries.
An insulating roll comprising:
- A) a metal conduit having an outer peripheral portion including a working area and opposing ends;
- B) a plurality of discs having outer peripheries, fabricated from an inorganic material and defining a disc bundle positioned axially on and around the metal conduit, said disc bundle having opposing ends;
- C) a tubular shell having an inner surface about and spaced apart from said outer peripheries and including a working area and opposing ends;
- wherein said tubular shell is retained in place by the engagement of at least one key removably attached directly or indirectly to the outer periphery of said metal conduit outside of the working area and engaging a longitudinally oversized aperture in said tubular shell thereby allowing for axial and radial growth of said shell upon heating during operation while limiting rotational movement of the tubular shell.
Dependencies are inferred from the claim text.