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US 6,883,249 B1Granted
Dryer with insulating flights
AssigneeInternetek, Inc.
InventorGary Catlett
Life of this patent
Estimating the term…
Abstract
An insulating flight for a dryer incorporates inner and outer plates with insulation between them. The concave surfaces of the inner and outer plates provide a space for the insulation and allow for thermal expansion without stressing the welds between the inner and outer plates.
Claims9
A dryer, comprising:
- a cylindrical shell defining first and second ends, an interior, an exterior, and a longitudinal axis;
- a burner located at the first end of the shell;
- a plurality of flights secured to the interior of the shell and overlapping each other, each of said flights including an inner metal plate defining an inner surface that is convex toward the longitudinal axis of the shell and an outer surface that is concave toward the shell;
- and
- insulation between said inner metal plate and said shell.
2 more elements
A combustion flight for a dryer, comprising:
- an inner metal flight shell having a convex inner surface and a concave outer surface;
- an outer metal flight shell having a convex outer surface and a concave inner surface, said inner and outer metal flight shells being secured together with their concave surfaces facing each other to form a hollow compartment;
- and
- insulation located in said hollow compartment between said inner and outer metal flight shells.
1 more element
Dependencies are inferred from the claim text.