Expandable double walled smoke stack
OwnerIra Michael Bennettinventor
Life of this patent
Estimating the term…
Abstract
A double walled smoke stack is made up of stackable sections. The top part of each section has a member extending between inner and outer shells and is either downwardly prestressed towards the inner shell or is flexible. This allows the inner shell to upwardly expand.
Claims10
A double walled expandable smoke stack section comprising inner and outer shells, a flange plate extending between said shells at the bottom thereof, a closure plate secured to said inner shell at the bottom thereof and extending downwardly from said flange plate, and a movable member means rigidly secured at its ends between the tops of said shells for enclosing the space between said shells and for preventing particles from entering said space.
Dependencies are inferred from the claim text.