Patents Assigned to MO' MOTION VENTURES
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Patent number: 4374533Abstract: Apparatus is provided for debarking logs and cut timber, comprising a debarking drum rotatable in either direction and having an inlet at one end and a plurality of lifter means shaped and disposed on an interior wall of the drum in a manner to engage and lift logs and cut timber with rotational movement of the drum in either direction; and a conveyor feeding logs and cut timber into the interior of the debarking drum; the conveyor being movable between a first position and a second position with respect to the inlet and the center axis of the debarking drum; and means for driving the drum in one direction when the conveyor occupies the first position, and in the opposite direction when the conveyor occupies the second position, so as to wear the lifter means more evenly.Type: GrantFiled: January 22, 1981Date of Patent: February 22, 1983Assignee: Mo och Domsjo AktiebolagInventor: Sven A. Svensson
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Alkaline oxygen delignification and bleaching of cellulose pulp in the presence of aromatic diamines
Patent number: 4372811Abstract: A process is provided for the alkaline oxygen delignification and bleaching of chemical cellulose pulp while inhibiting degradation of carbohydrates in the pulp, due to the presence of one or more aromatic diamines, preferably having the diamine groups directly linked to an aromatic ring.Type: GrantFiled: May 4, 1981Date of Patent: February 8, 1983Assignee: Mo och Domsjo AktiebolagInventors: Hans O. Samuelson, Kjell E. Abrahamsson -
Patent number: 4348256Abstract: A method is provided for controlling the supply of delignifying and/or bleaching chemicals in the continuous delignification and/or bleaching of lignocellulosic material such as wood and pulp in a through flow delignification and/or bleaching stage which commprises admixing the lignocellulosic material with delignifying and/or bleaching chemicals and flowing the lignocellulosic material under delignifying and/or bleaching conditions through the stage while controlling the addition of the delignifying and/or bleaching chemicals according to the ratio of the quantity of delignifying and/or bleaching chemicals consumed to the quantity of delignifying and/or bleaching chemicals originally charged, referred to hereinafter as relative consumption, the time and the temperature in a manner to maintain substantially constant the relative consumption of delignifying and/or bleaching chemicals at a predetermined time by the lignocellulosic material during flow through the stage.Type: GrantFiled: May 5, 1978Date of Patent: September 7, 1982Assignee: Mo och Domsjo AktiebolagInventors: John R. Bergstrom, Sten L. Haggstrom
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Patent number: 4342270Abstract: A digging and planting machine is provided having a tubular digging and planting tool mounted on a vehicle travelling along the ground surface, and at least one sensing and signalling means for sensing the resistance of the ground to penetration by the digging tip of the tool, thus gauging the condition of the ground, and detecting obstacles to such penetration, so as to ensure that the digging tip provides and a plant is fed to a planting hole of the desired depth, when ground condition is suitable, and, when ground condition is not suitable, that new digging attempts continue to be made at closely-spaced intervals as the vehicle travels over the ground until a planting hole of the desired depth is dug, so as to plant as many plants as close together as desired per unit area.Type: GrantFiled: May 18, 1981Date of Patent: August 3, 1982Assignee: Mo och Domsjo AktiebolagInventors: Stig-Gunnar Lofgren, Bo G. Ekeborg
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Patent number: 4333560Abstract: Apparatus is provided for removing particulate material not normally larger than about 0.5 dm.sup.3 in volume such as wood chips, bark, coal, ore, slag, municipal waste or industrial waste, from a pile whose sides are at an angle of at least 40.degree. to the horizontal. The apparatus includes an elongated scraper means arranged for oscillating movement along its longitudinal axis in contact with the sides of the pile from the bottom to the top of the pile for scraping material down from the pile towards approximately ground level where the material is carried by conveying means away from the pile site. The scraper means is carried on a frame arranged for movement along the base of the pile of material and at right angles thereto to selected parts of said pile for scraping material from the pile.Type: GrantFiled: August 1, 1980Date of Patent: June 8, 1982Assignee: Mo och Domsjo AktiebolagInventor: Olof E. Frisk
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Patent number: 4324612Abstract: A process is provided for preparing groundwood pulp from debarked pulpwood logs, which comprises grinding the logs in the presence of water under a superatmospheric pressure of a gas selected from the group consisting of steam, air, and steam and air, and forming and discharging a pulp suspension in the resulting aqueous liquor, while continuously supplying water during the grinding in a volume of less than 35 parts per part of bone dry pulp at a rate of addition such that the temperature of the discharged pulp suspension is below 200.degree. C. and preferably below 180.degree. C. and within the range from about 1.5 to about 50, preferably from 2 to 8, times the temperature in .degree.C. of the added water at a pressure within the range from about 8 to about 40 kiloponds/cm.sup.2, preferably from 10 to 30 kiloponds/cm.sup.2, higher than the superatmospheric pressure and at a temperature within the range from about 2 to about 63.degree. C.Type: GrantFiled: November 26, 1979Date of Patent: April 13, 1982Assignee: Mo och Domsjo AktiebolagInventor: Jonas A. I. Lindahl
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Patent number: 4312441Abstract: Apparatus is provided for removing particulate material, such as wood chips, bark, municipal waste or industrial waste, from a pile thereof, comprising a support extending along the base of the pile and a carriage movable on the support along its longitudinal axis. Mounted on the carriage are an elongated scraper for scraping material from the pile, and a conveyor for collecting and carrying away particulate material scraped down from the pile.Type: GrantFiled: August 1, 1980Date of Patent: January 26, 1982Assignee: Mo och Domsjo AktiebolagInventor: Olof E. Frisk
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Patent number: 4311666Abstract: Apparatus is provided for controlling the degree of causticization of white liquor in its preparation from green liquor by the addition of calcium oxide, which comprises determining the sodium carbonate concentration of green liquor fed to the causticization; determining the sodium carbonate concentration of white liquor resulting from the causticization; and controlling the degree of causticization within a predetermined range while taking both sodium carbonate concentrations into account, so as to maintain the degree of causticization of the white liquor within the range despite variations in sodium carbonate concentration of the green liquor and variations in calcium oxide content of the calcium oxide added for causticization.Type: GrantFiled: February 11, 1980Date of Patent: January 19, 1982Assignee: Mo och Domsjo AktiebolagInventors: Bengt G. Hultman, Erik A. Berglund
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Patent number: 4294653Abstract: A process is provided for the manufacture of bleached chemimechanical cellulose pulp in high yield of between 65 and 95% from particulate and preferably washed lignocellulosic material, such as wood chips, featuring the use of spent or waste bleaching liquid, preferably from a lignin-preserving bleaching process, in at least one stage of the process where a cooling and diluting liquid is required, such as during mechanical defibration of the material.Type: GrantFiled: April 11, 1978Date of Patent: October 13, 1981Assignee: Mo och Domsjo AktiebolagInventors: Jonas A. I. Lindahl, Lars G. Rudstrom
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Patent number: 4274786Abstract: Process and apparatus are provided for continuously conveying particulate compressible fibrous material from a first zone at a first gas pressure to a second zone at a second gas pressure with a pressure differential therebetween of at least 0.5 bar while retaining the prevailing gas pressure in each zone, which comprises:(1) continuously compressing the particulate material in the first zone into a gas-containing but gas-impermeable mass extending across the interface between the two zones;(2) continuously passing the mass of material out from the first zone into the second zone while maintaining the gas pressure within the mass constant at the gas pressure of the first zone; and(3) continuously breaking up the mass entering the second zone into particulate material.Type: GrantFiled: February 7, 1979Date of Patent: June 23, 1981Assignee: Mo och Domsjo AktiebolagInventors: Claes G. S. Svensson, Hans E. K. Eriksson, Rolf B. Lundgren
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Patent number: 4273056Abstract: A digging and planting machine is provided having a tubular digging and planting tool, and at least one sensing and signalling means for sensing the resistance below and/or exceeding a predetermined minimum of the ground to penetration by the digging tip of the tool, thus gauging the condition of the ground, and detecting obstacles to such penetration, so as to ensure that the digging tip provides and a plant is fed to a planting hole of the desired depth, when ground condition is suitable, and, when ground condition is not suitable, that a digging attempt is aborted and a new attempt made as soon as possible.Type: GrantFiled: May 18, 1979Date of Patent: June 16, 1981Assignee: Mo och Domsjo AktiebolagInventors: Stig-Gunnar Lofgren, Bo G. Ekeborg
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Patent number: 4273612Abstract: A process is provided for continuously washing fibrous suspensions in aqueous suspending liquors containing dissolved impurities to remove such impurities by exchanging aqueous suspending liquid substantially free from such impurities for the aqueous suspending liquor, which comprises washing fibrous material of the suspension in aqueous suspending liquid substantially free from dissolved impurities; and forming a washed fibrous suspension in such liquid; withdrawing aqueous suspending liquor containing dissolved impurities; diluting the washed fibrous suspension by adding aqueous suspending liquid substantially free from dissolved impurities; measuring the volume amount of such diluting aqueous suspending liquid added; measuring the volume amount of diluted washed fibrous suspension; and then adjusting the volume amount of wash liquid added to maintain substantially constant the difference between the amount of wash liquid added and the liquid content of the undiluted washed fibrous suspension.Type: GrantFiled: June 8, 1979Date of Patent: June 16, 1981Assignee: Mo och Domsjo AktiebolagInventors: Per A. R. Hillstrom, Lars G. Norehall
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Patent number: 4257419Abstract: A ligator is provided for pinching off hemorrhoids and similar body tissues, comprising, in combination, a tubular housing; a suction tube fixedly mounted on the housing; and an actuator sleeve slidably mounted for reciprocable movement within the housing along the suction tube; a suction cup defining an open suction cavity facing outwardly and fixedly attached to and in flow communication with the suction tube for sucking a hemorrhoid into the suction cavity, the suction cup having means for receiving an elastic ring about the periphery of the open suction cavity; and means for ejecting said ring from the cup and onto the body portion link of a hemorrhoid sucked into the suction cavity and projecting from the cavity; said ejecting means being movable by reciprocation of the actuator tube between nonactuated passive and actuated ring-ejecting positions.Type: GrantFiled: December 14, 1978Date of Patent: March 24, 1981Assignee: Mo och Domsjo AktiebolagInventors: Ewald Goltner, Karl-Heinz Lurz, Gerhard Schneider
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Patent number: 4257418Abstract: PCT No. PCT/SE79/00005 Sec. 371 Date Feb. 23, 1979 Sec. 102(e) Date Jan. 22, 1979 PCT Filed June 21, 1978 PCT Pub. No. WO 79/00008 PCT Pub. Date Jan. 11, 1979A device for absorbing urine with incontinent persons is disclosed, which device comprises a holder for multiple use and a disposable diaper situated in the holder. The holder consists of a perforated inner part made from a thin flexible material and an outer part also made from a thin flexible material. The inner part has a curved shape to bear against the bodily shape of the wearer and includes an upwardly wider portion in relation to the wearer and a downwardly tapering portion. Running along its outer contours is a reinforcement made from a flexible material having such stability that a curved form is maintained. The outer part is of substantially the same shape as the inner part and is attached to the downwardly tapering portion of the inner part. The outer part also has a reinforcement running along its outer contour.Type: GrantFiled: January 22, 1979Date of Patent: March 24, 1981Assignee: Mo och Domsjo AktiebolagInventor: Hans Hessner
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Patent number: 4253911Abstract: A process is provided for the separation of sodium chloride in the sodium chemicals recovery stage of sodium-based pulp manufacturing processes so as to maintain a low sodium chloride content in the recycled sodium chemicals, comprising the steps of treating an aqueous sodium chloride-containing solution with carbon dioxide gas, thereby forming a saturated sodium bicarbonate solution; precipitating sodium values of the solution as sodium bicarbonate while retaining sodium chloride in solution; separating such sodium bicarbonate; withdrawing the residual aqueous sodium chloride-containing solution from the process; and recycling the separated sodium bicarbonate.Type: GrantFiled: February 24, 1977Date of Patent: March 3, 1981Assignee: Mo och Domsjo AktiebolagInventors: Per A. R. Hillstrom, Kent I. Sondell
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Patent number: 4236960Abstract: Process is provided for controlling the degree of causticization of white liquor in its preparation from green liquor by the addition of calcium oxide, which comprises determining the sodium carbonate concentration of green liquor fed to the causticization; determining the sodium carbonate concentration of white liquor resulting from the causticization; and controlling the degree of causticization within a predetermined range while taking both sodium carbonate concentrations into account, so as to maintain the degree of causticization of the white liquor within the range despite variations in sodium carbonate concentration of the green liquor and variations in calcium oxide content of the calcium oxide added for causticization.Type: GrantFiled: June 27, 1979Date of Patent: December 2, 1980Assignee: Mo och Domsjo AktiebolagInventors: Bengt G. Hultman, Erik A. Berglund
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Patent number: 4231357Abstract: A body fluid absorbent bandage is provided for open and weeping body wounds, comprising, in combination;(1) at least two bandage-supporting base layer pieces for juxtaposed attachment to the body about substantially the entire periphery of the wound or injury, and surrounding it, but leaving the wound open and exposed;(2) an intermediate foraminous sheet for attachment to the base layer as an intermediate layer extending across and bridging the wound; and(3) an absorbent outer layer for attachment to the intermediate layer in a manner to extend across and cover the intermediate layer at least in the region over the wound within the surrounding base layer, the absorbent outer layer comprising at least in the region over the wound a particulate absorbent material having a water absorptivity of at least 50 mm/10 min according to Klemm, and an envelope of body fluid-pervious sheet material enclosing and retaining the absorbent material in a convex shape at least in the region over the wound; the absorbent outer lType: GrantFiled: December 4, 1978Date of Patent: November 4, 1980Assignee: Mo Och Domsjo AktiebolagInventor: Hans Hessner
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Patent number: 4222819Abstract: A process is provided for the acid bleaching of cellulose pulp with peroxides at a pH within the range from about -0.5 to about 3, followed immediately by aqueous alkaline extraction of the dissolvable lignin without intermediate washing.Type: GrantFiled: February 5, 1979Date of Patent: September 16, 1980Assignee: Mo och Domsjo AktiebolagInventors: Greta K. Fossum, Sten L. Haggstrom
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Patent number: 4218821Abstract: A tool of the nature of scissors, tongs, pliers or pincers is provided having a pair of lever arms pivotably attached together by a pivot pin, each having holder means at one end and tool-functional means at the other end on opposite sides of the pivot pin, for pivotable manipulative engaging movement of the tool-functional means by the holder means, comprising first and second lever arms, the first lever arm having a through slot receiving the second lever arm; the second lever arm having a central portion extending within the slot and a pivot pin immovably fixed to and extending through the central portion thereof and projecting outwardly on each side of the central portion; the projecting portions of the pivot pin defining pivot points for the pin; the pivot points of the pivot pin being cold-pressed into the walls of the first pivot arm within the slot, thereby defining in the walls cold-formed pivot sockets conforming in shape to the pivot point in a manner to pivotably mount the second lever arm on theType: GrantFiled: June 28, 1978Date of Patent: August 26, 1980Assignee: Mo och Domsjo AktiebolagInventor: Gerhard Schneider
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Patent number: 4218414Abstract: A method is provided for shredding and dry-defibrating compressed cellulose pulp, and depositing the resulting fibrous material on a foraminous support to form a batt of relatively uniform density while controlling the feed of cellulose pulp material through the shredding and dry-defibrating operations to the foraminous support according to the output rate of the batt-forming operation, to ensure a relatively uniform density in the batt withdrawn from the foraminous support.Type: GrantFiled: September 13, 1978Date of Patent: August 19, 1980Assignee: Mo och Domsjo ABInventors: Per B. Hagg, Sven Bergstrom, Lars E. Lundmark, Carl-Erik L. Hedberg