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Class 241/293 - Cylindrical or frusto-conical (i.e., peripheral comminuting face)


Subclass of Class 241 - Solid material comminution or disintegration
Definition: Comminuting elements having a generally cylindrical or frusto-conical
No. of patents: 104
Last issue date: 05/24/2011


1      
NumberTitleIssue Date
7946518Grinding roller and method for the reconditioning thereof
The invention relates to a milling roller of a high-pressure material bed roller mill, having profile-members which are embedded with a portion of the length thereof in holes of the roller body and, with the remainder of the length thereof, protrude above the surfac...
05/24/2011
7832671Press roller annular casing and method for production thereof
An annular casing for the press rollers of roller presses for the pressure comminution of particulate material, the outer surface of which casing always has a high degree of hardness and consequently a high wear-resisting capability, but the radially inner region of...
11/16/2010
7438247Grinding rollers for a vertical crusher
The invention relates to a composite milling roller, produced by casting, comprising peripheral inserts of a high wear-resistance and high hardness material, sealed in a ductile material on said casting. The roller comprises first zones subject to high wear and seco...
10/21/2008
7438097Reducing machine rotor assembly and inserts therefor and method of constructing the inserts
A comminuting machine rotor assembly comprising rotors carried by a shaft for conjoint rotation with the shaft, hammer heads carried by the rotors and extending radially outwardly from the shaft, and hammer inserts releasably attached to respective ones of the hamme...
10/21/2008
7413136Fiber chopper with improved idler roll
A method and apparatus for chopping long unwound items like fiber, fiber strands, yarn, etc. having an idler roll for pressing the item(s) against a backup roll for pulling the item(s) into the chopper, the idler roll being an assembly allowing the idler roll to piv...
08/19/2008
7364104Cutting machine for organic plant materials, especially for tobacco
A cutting machine for organic plant materials has a frame in which a cutterhead of a drum having sets of cutting knives (16, 18) symmetrically arranged on its perimeter surface is mounted. At least two separate knife extension arrangement (10, 10a
04/29/2008
7296763Keyless frictional shaft/hub locking device
A grinder roll assembly (500) is provided herein. The grinder roll assembly (500) includes a grinder roll (505), a shaft (510) in a through bore of the grinder roll, a first tapered sleeve (615A), and a second tapered sleeve (61...
11/20/2007
7287308Swarf cutter
An assembly suited to the lathing of cylindrical workpieces, such as photoreceptor blanks, includes a first drive system which rotates an associated workpiece about an axis of rotation. A machining tool machines a circumference of the workpiece to generate a strip o...
10/30/2007
7124972System and apparatus for manufacturing thermoplastic micropellets
A highly efficient pelletizing system for making thermoplastic micropellets includes and extruder for extruding molten thermoplastic into thermoplastic strands. A rotor cuts the strands into micropellets. The rotor has more than four teeth per inch and operates at a...
10/24/2006
7036758Cone crusher
A crushing chamber is formed between a concave liner and a mantle liner. The concave liner has a first area surface having a length of T to √2T; a second and a third area surface; which surfaces are gradually inclined from the side of the inlet for the crushing ch...
05/02/2006
7011261Cutting tool of a cutting machine used for cutting plastic materials into granules
A cutting machine used for cutting elongate plastic materials into granules includes a cutting tool, which consists of a roller-shaped body, several knives, and soft metallic bars; the roller-shaped body has lengthwise extended holding trenches spaced on an outer si...
03/14/2006
7011259Apparatus for working and processing materials
A system for working and processing material, for example, for disintegrating different material, especially elastomers, in different branches of industry for lowering quantity of waste. The apparatus includes a housing with: branch pipes for introducing initial mat...
03/14/2006
6983903Multi-functional shredder
The present application discloses a multi-functional shredder that is capable of effectively destroying both paper documents and rigid/semi-rigid objects, such as CDs or DVDs. This multifunctional shredder comprises a housing; a drive system including at least one m...
01/10/2006
6824088Roller mill
A roller mill includes a base, a pulverizing table having a substantially horizontal upper surface, supported against the base and arranged to rotate around a vertical axis intersecting the upper surface in a center point thereof, an annular groove, formed on the up...
11/30/2004
6634582Roller-type reducing apparatus
A roller-type reducing apparatus comprising reducing rollers mounted within a housing for rotation in opposite directions. The reducing rollers comprise a plurality of reducing discs having different diameters and placed in a side-by-side relationship. Th...
10/21/2003
6634577Crusher, process for preparing and testing materials and apparatus therefor
A crushing apparatus for crushing, blending, homogenizing and transferring materials is made up of a first pressing element having a first pressing face with protrusions provided thereon in the form of isolated islands surrounded by depressed marginal spa...
10/21/2003
6626383Device for breaking, tearing, and crushing through plant material
An improved device for crushing plant material and including contra-rotating rotors comprising a core member with an equal number of not less than three and not more than six blades tangentially disposed thereon.at equal degree angle orientation with each...
09/30/2003
6598814Fiber chopper
A method and apparatus for chopping long unwound items like fiber, fiber strands, yarn, etc. having an idler roll for pressing the item(s) against a backup roll for pulling the item(s) into the chopper uses an improved mount for the idler roll that mainta...
07/29/2003
6588689Apparatus for crushing material
An apparatus 10 for crushing materials such as rock, ore, coal, stone and the like includes two rolls 16A and 16B which are mounted in parallel to define a gap 18 therebetween. Chunks of material to be crushed are fed by a conveyor 12 into the nip 14 betw...
07/08/2003
6527212Ice shaver
An ice shaver machine that includes a hopper for receiving ice, a blade and scraper for drawing the received ice across the blade, thereby producing thin, snow-like ice shavings or flakes, which are scraped to a spout, which, in turn, is provided for deli...
03/04/2003
6523767Grinding roller and method for the manufacture thereof
In order to create a surface armoring suitable for the autogenous wear protection with application of grid armoring technology that exhibits a long service life capability due to high wear-resistance and compressive strength and that can nonetheless be ma...
02/25/2003
6513740Blade of a paper shredder
A paper shredder has two rotary cutters each having multiple blades spaced apart from each other. Each blade has a first cutting blade with multiple cutting edges and a second cutting blade with multiple cutting edges alternate with respect to the cutting...
02/04/2003
6450429Method and apparatus for treating waste material
A method and an apparatus for treating waste material. The apparatus has a conical rotatable rotor (3) placed between stators (1, 2). At least the stators (1, 2) have recesses (9) from which the material in the apparatus can be discharged when the rotor (...
09/17/2002
6318651Mill, in particular for milling of bone, as well as a drum, provided with cutting members, applicable in the mill
A mill comprises a housing (3) and a drum (15), provided with cutting members (17), which is rotatably located inside the housing. The cutting members and the drum are made from one piece and the cutting members are formed by local thickenings of the wall...
11/20/2001
6280370Abrasion resistant surface coatings and method of forming same
Hardfacing for a sugar mill roller is disclosed including a wear resistant material supported by a mild steel matrix and applied to the outer surface of the sugar mill roller. A method of hardfacing a sugar mill roller is also disclosed wherein a mild ste...
08/28/2001
6260780Paper shredder shaft
A shredder cylinder that includes a generally circular shaft having a plurality of spaced apart cutting disks arranged along the axis of the cylinder, and a spacer disposed between adjacent disks. The spacer has a diameter greater than the diameter of the...
07/17/2001
6241169Method and apparatus for mechanical defibration of wood
A system for mechanical defibration of wood kneads the wood by moving a defibration surface having contours at least partly in contact with the wood in a direction at a speed in relation to the wood and fibres are separated from the wood. The contours of ...
06/05/2001
6086003Roll press for crushing abrasive materials
The invention relates to a roll press, in particular for processing very abrasive materials, comprising at least two press rolls of which each includes a wear layer arranged on a basic body. The wear layer comprises substantially plane zones of a highly w...
07/11/2000
6079649Millennium rotor assembly
A rotor assembly for use with size reducing machines having a drive motor comprising a central shaft with a drive end for securement to the drive motor and an opposing outboard end. The rotor assembly also comprises a webbing engaged with the central shaf...
06/27/2000
6039276Apparatus and method for crushing sugar cane
An apparatus for crushing sugar cane to extract the juice has opposed crushing rolls at least one of which is formed with juice channels which are temporarily plugged by bagasse after the juice has entered into the channel. Further rotation of the rolls r...
03/21/2000
5984846Roller
A roll is described, particularly a roll for crushing or de-agglomerating different materials. It can be used in all situations where deformations of the roll ends, in association with a constant roll gap, constitute a problem, particularly at high roll l...
11/16/1999
5975167Cutter for land clearing device
A free-swinging cutter for use on a machine adapted to cut and clear brush and trees, including a generally stirrup-shaped member having two opposing sidewalls, a leading face with a cutting edge for cutting, and a rearward face opposite the leading face....
11/02/1999
5961058Cutting cylinder for a document shredding machine
A cutting cylinder for a paper shredder has a shaft with a first end and a second end. A plurality of spaced-apart cutter discs are arranged on the shaft between the first and second ends of the shaft. Each cutter disc has an inner surface defining an inn...
10/05/1999
5941469Chopper knife
A forage harvester chopper knife includes a cutting region defined by a plurality of recesses arranged across the width of the knife so as to result in a corrugated or serrated cutting edge, the cutting edge thus defined requiring less energy for cutting ...
08/24/1999
5927622Waste grinder and bit therefore
The present invention is an apparatus and a method of operating a grinder for chipping and shredding material into waste, the grinder including a generally cylindrical drum having an exterior surface with a plurality of pockets formed into the exterior su...
07/27/1999
5927627Continuous crumbing machine for recycling rubber tires
An improved continuous crumbing machine for recycling rubber tires and other materials such as polyethylene containers, gypsum, hardboard, tin cans, glass jars and bottles. The device comprises a pair of rotating rolls having negative rake teeth of interl...
07/27/1999
5890353Adjustable chopper shaft
An adjustable chopper shaft is disclosed including a chopper shaft (14), a gear (18) concentrically mounted on the chopper shaft, the gear being accomodated in a gearbox (40). A setup (30, 32) for selectively allowing rotation of the chopper shaft relativ...
04/06/1999
5860609Wear-resistant surface armoring for the rolls of high-pressure roll presses for the pressure disintegration of granular material
In order to create a wear-resistant surface armoring suited for autogenous wear protection for the rolls of high-pressure roll presses for pressure disintegration of granular material using nap bolts (grid armoring), which also comprises a high serviceabl...
01/19/1999
5820045Conical Crusher having a single piece outer crushing member
A conical crusher having a rigidly supported outer frustoconically shaped crushing member and an inner conical crushing member supported on a wobble mechanism which is in turn supported by air bellows. The air pressure in the air bellows is regulated to a...
10/13/1998
5806774Anvil for centrifugal impact crusher and circle of anvils equipped with such anvils
The anvil (10) overall has the shape of a prism with one curved lateral surface (16) and two lateral surfaces (18) (20) which have flanks (26) (28) adjacent to the curved surface (16) and directed along the axis of curvature of this surface (16). These fl...
09/15/1998
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