Patents by Inventor Arne Larsson
Arne Larsson has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 9194527Abstract: A plug (1) for sealing a hole (2) provided in a work piece (3). The plug (1) comprises a front part (4) and a sealing part (5), and the surface hardness of at least the sealing part is greater than the hardness of the work piece (3). The sealing part (5) is conical and has an increasing diameter, in a direction from the front part (4) and the sealing part (5) comprises a cutting thread (6). The profile of the cutting thread (6) comprises a sharp tapered top (7), two adjacent flat flanks (8), and a bottom (9) of the thread (6). The sharp tapered top (7) is formed by the two flanks (8) which meet at a common intersection point. An angle (?, ?) between the flanks (8) is between 110-160° while transitions between the flanks (8) and the bottom (9) are smooth.Type: GrantFiled: April 22, 2013Date of Patent: November 24, 2015Assignee: Lalmek Verkstad ABInventor: Lars-Arne Larsson
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Publication number: 20150122363Abstract: A plug (1) for sealing a hole (2) provided in a work piece (3). The plug (1) comprises a front part (4) and a sealing part (5), and the surface hardness of at least the sealing part is greater than the hardness of the work piece (3). The sealing part (5) is conical and has an increasing diameter, in a direction from the front part (4) and the sealing part (5) comprises a cutting thread (6). The profile of the cutting thread (6) comprises a sharp tapered top (7), two adjacent flat flanks (8), and a bottom (9) of the thread (6). The sharp tapered top (7) is formed by the two flanks (8) which meet at a common intersection point. An angle (?, ?) between the flanks (8) is between 110-160° while transitions between the flanks (8) and the bottom (9) are smooth.Type: ApplicationFiled: April 22, 2013Publication date: May 7, 2015Inventor: Lars-Arne Larsson
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Patent number: 6340060Abstract: In accordance with a method for making at least one hole in roofs (1), walls, etcetera, in case of fire (2) in buildings or the like the hole or holes are produced by cutting, using a pressurised liquid (3) which while cutting is sprayed into the space (4) on fire in the shape of a jet (5) which rapidly evaporates and in doing so contributes to extinguishing the fire (2), the combustion gases (6) being vented through the cut hole or holes (25). In equipment (7) designed for the implementation of the method there is provided a source of pressurised medium (8) having an outlet for a pressurised liquid (3), a conduit (10), and a nozzle (11) having an inlet (12) and outlet (13).Type: GrantFiled: February 22, 2000Date of Patent: January 22, 2002Assignee: Cold Cut Systems Svenska A.B.Inventors: Lars G. Larsson, Arne Larsson
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Patent number: 5482666Abstract: Methods of manufacturing fiberboard from lignocellulose-containing fibrous material are disclosed including defibering the lignocellulose-containing material, drying the defibered lignocellulose-containing material by contact with a heated drying gas in a first drying step to produce a partially dried lignocellulose-containing material, mixing the partially dried lignocellulose-containing material with a glue, drying the admixture of partially dried lignocellulose-containing material and glue by contact with a heated drying gas in a second drying step, which is conducted at a lower temperature than the first drying step, independently controlling the temperature and moisture content in the second drying step to produce a dried lignocellulose-containing material having a predetermined temperature and moisture content, forming the dried lignocellulose-containing material into a fiber mat, and hot pressing the fiber mat into fiberboard.Type: GrantFiled: February 7, 1994Date of Patent: January 9, 1996Assignee: Sunds Defibrator Industries AktiebolagInventor: Arne Larsson
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Patent number: 5069616Abstract: An ignition device for lances, such as lances intended for supplying oxygen gas to metallurgical processes, having a tubular casing intended to be fitted partially onto one end of a lance and the end part of which, located distal from the lance, carries a striker, which includes a pyrotechnical delay, extending into the tubular casing, and a reaction mass which is arranged in the casing and which can be ignited by the striker. The ignition device includes an end stop located in the casing adjacent the reaction mass, the end of the lance being intended to be brought into engagement with the end stop when fitting the device on the lance.Type: GrantFiled: May 8, 1990Date of Patent: December 3, 1991Assignee: Oxy-Tuben ABInventor: Arne Larsson
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Patent number: 4922056Abstract: An electrical box for securing a sheathed cable extending along a support wall to a connector is disclosed, preferably for use in a local area network computer communications system. The connection box comprises a mounting base, a cover plate, and a connection box. The mounting base has pairs of smooth cylindrical posts of different height respectively formed along edges of the base. The sheathed cable extending through an opening in the connection box is clamped between one pair of posts by a clamping bar screwed against upper post ends. A method of temporarily positioning the cover plate carrying the connector to the connection box is also disclosed allowing an installer to use both hands to electrically connect the cable to the connector.Type: GrantFiled: February 10, 1988Date of Patent: May 1, 1990Assignee: Network Communications, Inc.Inventor: Arne Larsson
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Patent number: 4901983Abstract: A high-temperature resistant blast pipe is primarily intended for delivering gas, such as oxygen, and, when appropriate, solid material to metallurgical processes, and incorporates a layer of refractory material comprising a refractory mixture of solid particles and an alkali-silicate based binder.The blast pipe is characterized in particular in that the major constituent of the binder is of the type polymerized alkali silicate.Type: GrantFiled: April 29, 1988Date of Patent: February 20, 1990Assignee: Oxy-Tuben ABInventor: Arne Larsson
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Patent number: 4662614Abstract: A blast pipe (2) primarily intended for introducing gas, such as oxygen gas, into molten metal in metallurgical processes, such as steel manufacturing processes, including a pipe element (1) made preferably of steel and coated at least externally with at least one protective layer (3). The blast pipe (2) is particularly characterized by the fact that the pipe element (1) is provided with an external, preferably high compact layer (3,4) which mainly comprises organic fibres, preferably wood fibres in the form of paper, and by the fact that the fibre layer (3,4) is preferably completely or partially impregnated with a refractory substance.Type: GrantFiled: March 8, 1985Date of Patent: May 5, 1987Assignee: Oxy-Tuben ABInventor: Arne Larsson
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Patent number: 4610434Abstract: A safety arrangement in a so-called gas-cutting lance (1) arranged to be connected at one end (2) thereof, the attachment end, to a gas-supply handle (3) or like means for causing gas, primarily oxygen gas, to flow through the lance. The lance comprises a hollow tube (5) which preferably houses a core (6) of, for example, closely packed filaments (7). The tube and the core comprise a material having a high iron content and are intended to melt progressively at the free end of the lance and to burn, to oxidize, at least in part.The arrangement is characterized in that preferably at least the lance (1) includes at least one substantially tubular sleeve (8,9) or like member in the vicinity of the attachment end (2) of the lance.Type: GrantFiled: January 18, 1985Date of Patent: September 9, 1986Assignee: Svensk Termo-Ekonomi ABInventor: Arne Larsson
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Patent number: D286739Type: GrantFiled: March 21, 1984Date of Patent: November 18, 1986Assignee: Svagstroms Montage HBInventor: Arne Larsson
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Patent number: D286740Type: GrantFiled: March 21, 1984Date of Patent: November 18, 1986Assignee: Svagstroms Montage HBInventor: Arne Larsson