Drying and gas or vapor contact with solids – Apparatus – Vacuum
Reexamination Certificate
2007-06-26
2007-06-26
Rinehart, Kenneth (Department: 3749)
Drying and gas or vapor contact with solids
Apparatus
Vacuum
C034S087000, C034S089000, C034S202000
Reexamination Certificate
active
09883837
ABSTRACT:
A low pressure dryer for granular or powdery material includes a plurality of canisters rotatable about a common vertical axis serially among material heating, vacuum drying and material inventory discharge positions; pneumatic piston-cylinder means for rotating the canisters about said axis among said heating, vacuum drying and inventory discharge positions; means for heating contents of a canister at said heating position; means for sealing and drawing vacuum within a canister at said vacuum drying position and means for selectably permitting downward flow of dried granular or powdery material out of a canister at said discharge position where said canisters move collectively and unitarily one with another.
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Quinn Charles N.
Rinehart Kenneth
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