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Class Information
Number: 34/147
Name: Drying and gas or vapor contact with solids > Apparatus > Spiral treated material path type
Description: Apparatus in which the material undergoing treatment travels in a generally spiral or helical path.

Patents under this class:

Patent Number Title Of Patent Date Issued
8359765 Device and method for dehydrating and drying a mixture of plastic granules and water Jan. 29, 2013
8348531 Media treatment web flow path Jan. 8, 2013
6957502 Fluid bed granulation apparatus Oct. 25, 2005
6718652 Rotary particle-drying drum Apr. 13, 2004
6418834 Apparatus for treating an item during travel of the item along a treating trough Jul. 16, 2002
6248298 FCC unit catalyst stripper Jun. 19, 2001
6138375 Support ring for pellet dryer screen Oct. 31, 2000
6119363 Rotary drum for drying pourable goods Sep. 19, 2000
6079118 Continuous drying system Jun. 27, 2000
6065224 Device and process for the aerobic treatment of organic substances May. 23, 2000
6035546 Device for heat-treating bulk materials in feed screws and bulk material drying method Mar. 14, 2000
5974692 Apparatus for air-treatment of products Nov. 2, 1999
5850781 Oven with zones situated above one another Dec. 22, 1998
5809664 Spout-fluid bed dryer and granulator for the treatment of animal manure Sep. 22, 1998
5724751 Process and apparatus for drying organic or inorganic materials Mar. 10, 1998
5697168 Indirect heating screw conveyor Dec. 16, 1997
5638606 Spider and lifter assembly for centrifugal pellet dryer Jun. 17, 1997
5611150 Centrifugal pellet dryer Mar. 18, 1997
5592748 Heat treatment of solid catalyst or adsorbent particles in the presence of fluid in a vibrating helical coil Jan. 14, 1997
5199185 Process and equipment for gaseous desiccation of organic particles Apr. 6, 1993
5074057 Drying apparatus having a vertical rotary spiral blade Dec. 24, 1991
5010808 Spiral conveyor oven Apr. 30, 1991
4997365 Spiral conveyor baking apparatus Mar. 5, 1991
4889146 Apparatus for cooling a web Dec. 26, 1989
4876801 Method and means for drying bulk goods Oct. 31, 1989
4597190 Machine for the continuous roasting of products such as coffee and barley, and method realizable with the said machine Jul. 1, 1986
4591337 Heat treatment furnace with crown-shaped transport path for the workpieces May. 27, 1986
4570359 Apparatus for the dewatering and drying of plastic granulate Feb. 18, 1986
4548623 Perforated trough conditioning device Oct. 22, 1985
4480535 Apparatus for air-treatment of products Nov. 6, 1984
4476019 Pellet dryer Oct. 9, 1984
4367596 Drying apparatus Jan. 11, 1983
4365422 Method and apparatus for continual treatment of textile sheet material by application of microwaves Dec. 28, 1982
4357760 Apparatus for drying pulverulent material Nov. 9, 1982
4237622 Dryer using vibratory feeding Dec. 9, 1980
4048472 Vibratory spiral conveyor chute and a resistance heating element Sep. 13, 1977
3938651 Self-supporting spiral conveyor Feb. 17, 1976

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