Heating – Shaft type – Having combustion products generated in or fed to shaft
Reexamination Certificate
2005-07-19
2005-07-19
Wilson, Gregory (Department: 3749)
Heating
Shaft type
Having combustion products generated in or fed to shaft
C266S197000
Reexamination Certificate
active
06918760
ABSTRACT:
A shaft preheater to achieve an improved adaptation of layer height to particle size spectrum of material to be preheated. The shaft preheater includes a plurality of shafts for receiving lumpy material, an arrangement for filling the individual shafts with the lumpy material to be preheated and means for limiting the layer height in the shafts. The means for limiting the layer height include a needle valve and have an arrangement for coarse adjustment and an arrangement for fine adjustments.
REFERENCES:
patent: 3889393 (1975-06-01), Thomas et al.
patent: 4217092 (1980-08-01), Quittkat et al.
patent: 4243379 (1981-01-01), Horn et al.
patent: 5915959 (1999-06-01), Gardner
Heinz Tölke
Kudras Joachim
Patzelt Norbert
Schmitz Thomas
Schuh Uwe
Polysius AG
Wilson Gregory
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