Tobacco – Cigar or cigarette making – Recovery of tobacco from cigarettes and cigars
Reexamination Certificate
2009-01-29
2011-12-20
Crispino, Richard (Department: 1747)
Tobacco
Cigar or cigarette making
Recovery of tobacco from cigarettes and cigars
C131S196000, C131S108000, C241S014000
Reexamination Certificate
active
08079370
ABSTRACT:
A system is used for removal of impurities from shredded tobacco recovered from defective cigarettes, especially activated carbon particles, as used in a machine for recovering tobacco and having separating sieves and suction devices, where in a transport zone for a mixture of shredded tobacco, paper and impurities, positioned directly downstream the device for final tearing of the cigarette paper, with the zone defining a turbulent flow zone for the mixture of shredded tobacco, paper and impurities, a separating device is installed which defines a first purification zone. The device has a grid, a vacuum system for maintaining turbulent flow of the mixture of shredded tobacco, paper and lightweight impurities, positioned above the grid having a mesh size larger than the size of heavy impurities, and a vacuum system for receiving heavy impurities. Then a second purification zone includes a vibrating sieve with a mesh size larger than the size of heavy and lightweight impurities. A vacuum dust removing device, defining a third purification zone, has a transport pipe with flow disturbing elements, a rotational sieve having a grid of a mesh size suitable for suction of volatile impurities, a flow guide means adjacent the sieve and defining at the same time a flow disturbing element, and a rotary chamber valve positioned under the sieve.
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Crispino Richard
International Tobacco Machinery SP. Z.O.O.
Marshall & Gerstein & Borun LLP
Nguyen Phu
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