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Class Information
Number: 241/244
Name: Solid material comminution or disintegration > Apparatus > Cooperating comminuting surfaces (e.g., jaw crusher) > Rotary surface (or surfaces) > Axial or radial flow of material (e.g., disc mill, or cone and shell mill)
Description: Apparatus in which the material flows in a generally axial and/or radial direction relative to a rotary surface during the comminuting operation.


Sub-classes under this class:

Class Number Class Name Patents
241/260 Cooperating non-smooth surface characteristics 30
241/257.1 Vertical axis 49
241/245 With feed and/or discharge mechanism or control 35
241/259.1 With means vary space between surfaces 99
241/250 With moving cooperating surface 4
241/254 With rotary surface axis noncoaxial or eccentric relative to nonrotary surface axis 7


Patents under this class:

Patent Number Title Of Patent Date Issued
6227471 Feeding element for fibrous material May. 8, 2001
5988538 Refiner disc having steam exhaust channel Nov. 23, 1999
5709257 Removing bark from wood chips Jan. 20, 1998
5645690 Pressure relief system for treating fibrous materials under pressure Jul. 8, 1997
5429316 Support for a stator of a refining machine Jul. 4, 1995
5372316 Waste processing machine Dec. 13, 1994
4936518 Apparatus for crushing or grinding of fibrous material, in particular drum refiner Jun. 26, 1990
4878997 Method and apparatus for manufacturing fibre pulp Nov. 7, 1989
4744521 Fluid food processor May. 17, 1988
4725336 Refiner apparatus with integral steam separator Feb. 16, 1988
4692214 Apparatus for producing mechanical pulp with a refiner having its drive shaft connected to a steam turbine output shaft Sep. 8, 1987
4668341 Method and apparatus for producing mechanical pulp with a steam turbine driven refiner May. 26, 1987
4600475 Refining apparatus with radial passageways for steam recovery Jul. 15, 1986
4560439 Method and grinder for the manufacture of pulp Dec. 24, 1985
4382559 Defibrator May. 10, 1983
4355767 Device in grinding apparatus Oct. 26, 1982
4301974 Refining apparatus Nov. 24, 1981
4235665 Method and apparatus for producing fiber pulp in a steam pressurized grinding system Nov. 25, 1980
4221631 Method and apparatus for refining fiberous material Sep. 9, 1980
4221343 Vented disc refiner Sep. 9, 1980
4203556 Grinding device May. 20, 1980
4204005 Process for producing fibrous food materials May. 20, 1980
4163525 Device for evacuating blow-back steam in pulp refining apparatus Aug. 7, 1979
4136831 Method and apparatus for minimizing steam consumption in the production of pulp for fiberboard and the like Jan. 30, 1979
4114818 Disk refiner Sep. 19, 1978
4089475 Mixing and comminuting machine for treating liquid-solid mixtures May. 16, 1978
4083503 Paper stock rotor axial position controlling and locking device Apr. 11, 1978
4082233 Disc refiner having means for removing gaseous media from pulp stock Apr. 4, 1978
4081146 Garbage disposal apparatus Mar. 28, 1978
4037792 Continuously refining raw fibrous material to produce mechanical refiner pulp Jul. 26, 1977
4004738 Method of and apparatus for shredding a web of plastic film Jan. 25, 1977
4002300 Chip-forming apparatus Jan. 11, 1977
3991945 Centrifugal mill Nov. 16, 1976
3987973 Device in machine elements with closed casing Oct. 26, 1976



 
 
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