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...Chester Carlson was a patent agent who tired of having to make multiple copies of patent applications using the only duplication method available at the time: carbon paper. In 1959 he came up with a new copying system and took it to IBM for evaluation. The "experts" at IBM determined potential sales to be only 5,000 units because people wouldn't want to use a bulky machine when they had carbon paper. Carlson's invention was the xerography process, the company founded on the system is Xerox.

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Class 241/42 - With plural comminuting zones


Subclass of Class 241 - Solid material comminution or disintegration
Definition: Apparatus in which the material is treated in a plurality
No. of patents: 24
Last issue date: 04/08/2008


NumberTitleIssue Date
7353670Tile sponge washing and conditioning apparatus
A tile sponge washing and conditioning apparatus is disclosed for washing in water a sponge used during a ceramic tile laying operation. The apparatus includes a frame for disposition thereof within the water. The frame includes a first wall and a second wall which ...
04/08/2008
7144550Mobile apparatus and process for treating infectious waste
A mobile self-contained apparatus and process for grinding, grating, macerating, chemically disinfecting, and drying infectious waste material. A trailer (10) contains a hopper (27), a grinder/grater (28), an enclosed conveyor system, drying and...
12/05/2006
7096556Recycling method and recycling apparatus of part for image forming apparatus, and recycled part for image forming apparatus
A recycling method of a part for an image forming apparatus, the part being used in the image forming apparatus and provided with a thermoplastic resin member at least in a part thereof is provided which includes: recovering the part for the image forming apparatus;...
08/29/2006
6000645Axial flow, bi-rotor concrete reclaimer
A concrete reclaimer having a pair of concentric mesh cylinders for separating wet concrete into its original components. The invention includes a hopper and feed screw for feeding wet concrete into the inner cylinder at a constant rate. The concrete is w...
12/14/1999
5794862Processing of waste material
An apparatus and method for chemically and physically stabilizing contaminated soil is disclosed. The soil is homogenized in a homogenizer; dropped into a mixer below the homogenizer and mixed with an additive; then dropped to a processing terminus locate...
08/18/1998
5695133Thermoplastic washer/recycler
There are a number of devices for washing/recycling thermoplastic. However, the devices tend to be designed on a scale for use at a central site. Additionally, the devices currently available do not have a positive feed travel mechanism. Rather the device...
12/09/1997
5271570Method of and system for flour milling
A flour milling method and system therefor comprising the steps of separating foreign materials from raw wheat, humidifying the raw wheat, polishing the raw wheat, and conditioning the polished wheat, further comprises a step of cleaning the polished whea...
12/21/1993
5259560Apparatus for cleaning fibrous mats
Apparatus for cleaning chicken droppings from one or more mats used as nesting material in chicken nests in a chicken house. The invention includes a housing having a plurality of rollers therein for conveying a mat and pulverizing the chicken droppings a...
11/09/1993
5257831Rag tearing machines for the textile industry
The rag tearing machine embodies an inlet station 1 in which the materials to be processed for a first time 23 and recycled waste 19 are poured, separately, onto the circulating belt 2. Several rag tearing stations (4a, 4b) are each followed by fan groups...
11/02/1993
5215017System and method for feeding paste material or slurry into a furnace
A fuel feed system and method for feeding low grade fuels to a fluidized bed furnace including an enclosure with a fuel inlet for introducing the fuel into the enclosure, an inlet for introducing air into the enclosure so as to propel the fuel through the...
06/01/1993
5016824Method and apparatus for controlling the production of thermomechanical pulp
Method and an apparatus for controlling the production of thermomechanical pulp meter chips by metering elements (9, 10) into a feed chest (2), and by feed elements (3, 7) connected to the feed chest feeds chips for refinement between thermomechanical pul...
05/21/1991
4986479Fluid jet shredder apparatus and method of use
A fluid jet shredder apparatus includes a conveyor for conveying a stream of material to be shredded. The conveyor has openings formed therein. A shredding station in position adjacent the conveyor and includes a fluid jet cutting nozzle directing a high ...
01/22/1991
4884756Waste treatment system
A system for the treatment of infectious waste including apparatus for receiving, shredding, disinfecting, and separating waste material. A manually operated entry device provides input for quantities of solid waste into a feeding channel wherein a feedin...
12/05/1989
4832268Improved mill for grinding powder and method of using
A mill for grinding powder material is disclosed having a cylindrical separation chamber into which the powder material is fed as a dispersion in a gas stream. Powdered material initially is supplied through two spaced powder inlets each located between a...
05/23/1989
4753660Method for the production of a coal suspension
The invention relates to an apparatus and method for producing a free flowing coal suspension high in solids content. The coal is ground in at least two stages utilizing a mill having a calibrating effect in one stage and a mill without calibrating effect...
06/28/1988
4471916Apparatus for treating liquid and semi-solid organic waste materials
An apparatus and method for treating for disposal organic waste material carried within a sludge, by adding to the sludge an alkali metal silicate and a setting agent, is disclosed. The apparatus includes several mixers, each having a trough with an input...
09/18/1984
4456503Apparatus for manfacturing mechanical pulp
A method and a device for the manufacture of mechanical pulp from lignocellulosic material by forcing the said material into contact with a grinding disc (1) which revolves about a central axle (2) perpendicular to the two end faces of the disc. The mater...
06/26/1984
4454992Wet processing apparatus for rendering cellulosic insulation particles fire-retardant
Particulate cellulose insulation material is rendered fire retardant by a wet process requiring considerably less fire retardant composition than normally employed in the usual dry processes or in wet processes proposed heretofore, and yielding a product ...
06/19/1984
4445973Method and device for the manufacture of mechanical pulp
A method and a device for the manufacture of mechanical pulp from lignocellulosic material by forcing the said material into contact with a grindstone (1) which revolves about an axle (2). The material is supplied in bulk, particulate form, preferably as ...
05/01/1984
4177952Impact scrubber
An impact scrubber for removing coating materials from the surfaces of particulate matter such as foundry sand and the like comprises a lift tube open adjacent upper and lower ends for containing a high velocity fluidized stream of said particulate matter...
12/11/1979
4175708Method of transporting liquid pitch containing lumpy cokes and apparatus therefor
Disclosed is a method of transporting liquid pitch containing lumpy coke wherein the lumpy coke contained in the liquid pitch is pulverized by a specific procedure and the pitch containing the thus pulverized coke is then transported. Disclosure is also m...
11/27/1979
4088528Method and apparatus for grinding chips into paper pulp
In the continuous production of paper pulp from ligno-cellulose raw material, the raw material is subjected to grinding and/or delignification by passing it in the form of small pieces between interpenetrating helicoidal surfaces driven synchronously in r...
05/09/1978
4032446Waste material handling system
An improved waste material handling system includes a plurality of waste food disposer units which are operable to disintegrate waste food materials to form a slurry. The system also includes a pulper unit which is operable to disintegrate solid waste mat...
06/28/1977
3948448Method for the fine comminution of solid materials with a rolling mill and comminution device for carrying out the method
An improved comminuting rolling mill wherein a solid material such as mineralic loose or bulk materials are introduced into a gap between opposed parallel counter rotating comminuting rollers with the material being supplied by a delivery device above the...
04/06/1976
 
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