Patent ID: 11971216
Assignee: ROLLS-ROYCE HIGH TEMPERATURE COMPOSITES, INC.
Field: Thermal processes and apparatus (Mechanical engineering)
Classification: CPC F | IPC F

Claim 10:
11. The multilevel retort assembly of claim 10, wherein
the surface of the first shell is the top surface, and the corresponding surface of the second shell is a bottom surface, and the at least one protrusion extends vertically from a radially outer portion of the first shell top surface into a depression in on a radially outer portion of the second shell bottom surface,
the second shell comprises at least one protrusion extending from a top surface of the second shell into a corresponding depression in a bottom surface of a third shell of the plurality of shells, and
the at least one protrusion extending from a top surface of the second shell into a corresponding depression in the third shell extends from a radially inner portion of the second shell top surface.