Abstract: A round cutter-blade of a paper shredder includes a body having a surface, a periphery, and an opening formed therethrough; and at least one triangular shaped knife-edge that is integrally formed with the surface of the body and is turned over the periphery of the body. The cutter-blade can cut broken paper into short fragments, thus raising the secure requirement greatly and reducing the cost due to a reduction of thickness of the round cutter-blade.

Abstract: A method for reducing particle size of a particulate comprising feeding a feed material to a grinding mill having a power of at least 500 kW, the mill having a specific power draw of at least 50 kW per cubic meter of grinding volume of the mill and the grinding mill including a grinding media comprising particulate material having a specific gravity of not less than 2.4 tons/m3 and a particle size falling in the range of from about 0.8 to 8 mm, grinding the feed material in the grinding mill and removing a product from the grinding mill, the product having a particle size range such that D80 of the product is at least about 20 microns.

Abstract: The apparatus for treating waste (50, W), in particular organic waste, comprises from the above to below: a loading section (2, 101), a grinding section (3, 102) and a section (4, 107) for storing the waste. A possible succession of steps of a functioning cycle of the apparatus starts with opening a loading container (21, 104), for example by using a handle (24, 160), and loading the waste (50, W) that requires treatment inside the apparatus. The container comprises a box-like body (22) and a base (23), which can move with respect to the body for bringing the container from a waste supporting configuration to a waste releasing configuration in the grinding section.

Abstract: A shredding machine is disclosed for shredding sheet material such as paper documents. The machine comprises an electric cutting mechanism which is operable to shred the sheet material, and has a collection bin arranged below the cutting mechanism for collection of the resulting shreds. The collection bin is movable in a pivotal manner between a first position in which it permits operation of the cutting mechanism and collects the shreds, and a second position in which it stops operation of the cutting mechanism. The bin is configured to move from the first position to the second position in response to the weight of shreds collected in the bin and the force acting on the collected shreds by fresh shreds exiting the cutting mechanism exceeding a predetermined threshold value.

Abstract: A method for industrial production of especially fine powders and mineral powders, where the material to be ground is mixed to a gas-solid matter suspension, which through acceleration nozzles (12) is led at least to two counter jets, which meet in grinding chamber (13) for further grinding of the powders. The ground gas-solid matter suspension is led in its turn by means of working gas at least to two intermediate containers (2a);(2b) in the grinding circulation, in which containers the gas is removed from the mixture and into intermediate container (2) a certain quantity of solid matter is collected, which quantity is returned to be ground and led to the other container (2) and the said quantity is circulated through the grinding process among intermediate containers (2a);(2b) until in some container the quality is established sufficient for removal off the process.

Abstract: A refiner (1) comprising a stator (2) and a rotor (6) that comprise a planar portion and a conical portion after the planar portion, which in turn comprise refining surfaces (4, 8) provided with blade bars (15, 18, 24) and blade grooves (16, 19, 25) therebetween, and the planar portions (4?, 81) of the refining surfaces (4, 8) of the stator (2) and the rotor (6) comprising at least two refining zones (14, 17, 23) in the direction of the radius (R) of the planar portion.

Abstract: A planer and thicknesser comprising a frame having a passageway that substantially extends through the frame. The planer and thicknesser further comprises an upper table having front and rear sections mounted on the frame, wherein a slot is located between the front and rear sections of the upper table, and a lower table moveably mounted within the passageway. The planer and thicknesser also comprises a cutting drum rotatably mounted within the frame such that a portion of the cutting drum projects upwardly through the slot and a portion of the cutting drum projects downwardly into the passage way. The planer and thicknesser also comprises a cover mounted above the upper table capable of being moved from a first position where it covers a portion of the cutting drum to a second position where it does not cover a portion of the cutting drum.

Abstract: In various embodiments, an agricultural sample grinding system is provided. The system includes a grinder unit for grinding and uniformly mixing an agricultural sample. The system additionally includes a collection chamber connected to a transfer spout extending from a side of the grinder unit. The collection chamber is for collecting the ground and uniformly mixed agricultural sample dispensed from the grinder unit via the transfer spout. The system deposits the ground and uniformly mixed agricultural sample into the collection chamber such that the uniform mixture of the sample is maintained.

Abstract: Process for milling a substance selected from sodium carbonate, sodium bicarbonate and sodium sesquicarbonate or trona, in which a cleaning agent is introduced into a mill for the purpose of obtaining a powder with a mean diameter of less than 100 ?m and of inhibiting the formation of incrustations in the mill.

Abstract: A device for reducing clogging of a gutter comprises a housing which fits in a gutter over the downspout. The device contains a motor-driven grinder mechanism which grinds up waterborne leaves and other debris passing through the housing, preferably as they exit through the outlet of the housing to the downspout. Preferably, the device also includes a plunger mechanism which helps push water and debris in the housing through the grinder mechanism. Also, preferable the device includes a water sensor and a debris sensor for operating the motor only when both water and debris are present.

Abstract: A pair of lugs in an opening of a grinding head of a grinding machine and a pair of corresponding openings in an orifice plate of a grinding machine are disclosed to properly orient the plate in the head during assembly. The lugs are preferably of two different sizes so that the orifice plate will only fit into the head in one orientation. The lugs may differ in size such that the person assembling the grinding machine will be able to visualize the correct orientation based on the size of the lugs and corresponding openings.

Abstract: A waste shredder (1) includes at least one loading chamber (3), two or more rotors (4) placed in seats formed in the bottom wall of the loading chamber (3) and a movable hopper (2) sliding above the loading chamber (3) and provided with a reciprocating translational movement. The hopper (2) has two end walls (B, B?) and carries a plurality of stiff vanes (5) placed in the spaces between the rotors (4), the end walls (B, B1) and the stiff vanes (5) protruding downward until they skim the bottom of the loading chamber (3) to press the material (8) to be shredded against the rotors (4). The rotors (4) turn in the opposite direction to the translational movement of the hopper (2) and reverse their direction of rotation when the hopper (2) reverses its direction of translation.

Abstract: The present invention provides a fullerene suspension and a method for producing a fullerene suspension having high dispersion stability without any chemical compound. Also, the fullerene suspension and its producing method makes it possible to be applied in various fields including the field of medical and pharmaceutical science and the field of foods and environment, in which the fullerene suspension obtained by the prior methods had not been applied. The fullerene is ground to form nanoparticles by irradiating a fullerene in a poor solvent with a laser. The pulse laser having a width of several-ten femtoseconds to several-hundred nanoseconds is appropriately applied.

Abstract: A sorting member with an optimized surface shape is adopted to pressurize a mixture heated on the sorting member to allow a melted resin mixed in the mixture to adhere to the sorting member to sort the resin from an unmelted resin. Thus, resin materials are sorted and recovered from unwanted home electric appliances and the like at a high purity.

Abstract: A seashell collecting and crushing apparatus includes a collection device having a hollow body and an inlet for introducing seashells into the hollow body. A fan assembly is operable to provide a suction airstream for drawing seashells into the hollow body. A crusher is positioned to receive seashells from an outlet of the collection device and pulverize the seashells received from the collection device into a fine particulate matter releasable through an outlet of the crusher. The fan assembly and the crusher are driven by a common driving arrangement. A method includes using the apparatus for removing seashells from the beach using the suction airstream to introduce seashells through the inlet into the hollow body, separating the seashells entering the hollow body from the suction airstream, pulverizing the seashells into a fine particulate matter using the crusher and exhausting the fine particulate matter through the outlet of the crusher.

Abstract: An ergonomic portable pill crusher tool includes an elongate handle having a first axis, and a shaft having an offset portion and a work portion. The offset portion is connected to the handle. The offset portion has a second axis arranged to be oblique with respect to the first axis of the handle at a first angle facing a central portion of the handle. The work portion has a third axis arranged to be oblique with respect to the second axis of the offset portion at a second angle facing away from the central portion, such that an extent of the work portion along the third axis is substantially perpendicular to the first axis of the handle at the central portion of the handle. A distal end of the work portion has a convex tip to facilitate application of axial and radial forces to the pill(s).

Abstract: Device for comminuting a heap of particulate material, comprising a framework-supported housing with a vertical axis which is provided at its upper end with at least one inlet opening for the heap and at its lower end with an outlet; a drive shaft which is arranged vertically and centrally in the housing and is driven by a drive motor; and a rotor which is mounted on the drive shaft and has a plurality of rotor elements which are offset in the circumferential direction and/or with an axial spacing and which extend, at least while the rotor is rotating, close to the actual housing wall in order to process the downwardly falling heap, wherein the housing has at least two housing sections arranged vertically above one another, of which the lower section, at least in the upper region adjoining the section above it, has a larger diameter than the adjoining region of the upper housing section, and the radial extent of the rotor elements in the upper region of the lower housing section is larger than the diameter of

Abstract: A portable backpack which doubles as a play activity center is disclosed. It is a portable entertainment center with numerous features for engaging young children in imaginative play. The front of the backpack is hinged to open an interior area where play toys and accessories can be located to simulate a dollhouse, space vehicle, barn or like play themes. The backpack is made of shape retaining materials that are nevertheless soft to the touch but crushable, and collapsible to minimize injury to the user and wear-and-tear during playful use by children. Various features such as a swing, ladder, escape hatch, windows, operable doors, promote imaginative play. Some embodiments of the backpack include colorful replicas of butterflies, beetles, etc. on the front to attract attention of peers to the backpack and its owner.

Abstract: A cone crusher includes a stationary main shaft and an eccentric that rotates about the main shaft to cause gyrational movement of a head assembly to crush rock within a crushing gap. The cone crusher includes a lower head bushing in contact with an outer surface of the eccentric. The eccentric is formed with a contact pad to enhance the contact between the eccentric and the lower head bushing during a no-load condition. The contact pad includes a contact surface that is recessed from the outer surface of the eccentric to enhance contact during no-load conditions while maintaining full contact between the lower head bushing and the eccentric outer surface during full load, crushing conditions.

Abstract: A grinder for a food item includes a top shell having a top axis, a top inner surface disposed about the top axis, and a plurality of top teeth extending downwardly from the top inner surface. The grinder further includes a bottom shell having a bottom axis, a bottom inner surface disposed about the bottom axis, and a plurality of bottom teeth extending upwardly from the bottom inner surface. A plunger is slidable within the cavity between a retracted position and an advanced position, the plunger having an upper surface directed away from the bottom inner surface, the upper surface having a perimeter configured for slidable engagement with an inner surface of the sidewall and a plurality of apertures in registration with the plurality of bottom teeth.