Component spool and shell pressure vessel with hydraulic fluid a

Details Component spool and shell pressure vessel with hydraulic fluid a Component spool and shell pressure vessel with hydraulic fluid a

1996-07-01

1997-07-15

Bahr, Jennifer

Tobacco

Tobacco treatment

Puffing

131296, A24B 318

Patent

active

056473826

ABSTRACT:
A process and apparatus for tobacco expansion is employed for expanding tobacco at rapid throughput rates. The apparatus includes a spool and shell assembly wherein the spool is moveable into and out of the shell between loading, impregnating, and unloading positions. In the impregnating position, sealing assemblies seal the radial clearance between the spool and shell to provide a pressure vessel for tobacco impregnation. The sealing assemblies include at least one elastically deformable sealing ring and an annularly shaped axial pressure applying member to releasably impart axial pressure to the sealing ring. The axial pressure applying member receives fluid pressure from a hydraulic fluid and preferably receives additional fluid pressure from the expansion agent used to expand the tobacco.

REFERENCES:
patent: 4554932 (1985-11-01), Conrad et al.
patent: 5469872 (1995-11-01), Beard et al.

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