Patents by Inventor Danilo Molteni
Danilo Molteni 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: 10167174Abstract: An electromagnetic lifter for moving hot materials includes a ferromagnetic yoke formed by a horizontal core and two vertical polarities, coils wound around the core and enclosed in a container, a non-magnetic baffle arranged between the vertical polarities and below the container at a distance of at least 40 mm to protect the container from heat radiated by the hot material. The electromagnetic lifter also includes a first space between the container and the plurality of vertical polarities that maintains a first predetermined distance between the container and the plurality of vertical polarities, a second space between the container and the core that maintains a second predetermined distance between the container and the core, and a third space between the container and the non-magnetic baffle that allows a convective flow of air. The electromagnetic lifter also includes side spacers disposed in the first space and top spacers disposed in the second space.Type: GrantFiled: June 18, 2015Date of Patent: January 1, 2019Assignee: SGM MAGNETICS S.P.A.Inventor: Danilo Molteni
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Patent number: 10144618Abstract: A lifter with electro-permanent magnets is provided. It has an external bearing structure closed at the bottom by a plate, provided with a heat shield, and pole pieces secured under the respective poles and protruding from the bottom plate. Each of the electro-permanent magnets has a reversible magnet arranged on top of one of the poles, of a fixed polarization magnet formed by a plurality of blocks placed along the lateral faces of the pole and of a coil arranged around the reversible magnet to cause the reversal of the polarization of the latter by means of an electrical pulse.Type: GrantFiled: August 18, 2015Date of Patent: December 4, 2018Assignee: SGM Magnetics S.p.A.Inventor: Danilo Molteni
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Publication number: 20180237272Abstract: An electromagnetic lifter for moving hot materials is disclosed. The lifter has a ferromagnetic yoke formed by a horizontal core and two vertical polarities, lifting coils wound around the core and enclosed in a container, a non-magnetic baffle arranged between the vertical polarities and below the container at a distance of at least 40 mm to protect it from the heat radiated by the hot material to be moved, as well as side spacers and top spacers which keep the container away from the polarities and the core respectively.Type: ApplicationFiled: June 18, 2015Publication date: August 23, 2018Inventor: Danilo MOLTENI
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Publication number: 20170282189Abstract: A plant for the treatment of car fluff is disclosed having one or more magnetic iron separators, followed by one or more eddy current separators that receive the negative coming from the magnetic iron separators, followed by one or more inductive sensor-based recovery separators that receive the negative coming from the eddy current separators, followed by at least two inductive sensor-based polishing separators respectively calibrated for the separation of stainless steel and copper wires arranged for receiving the material separated by the inductive sensor-based recovery separators, an unravelling shredder also being arranged between the latter and the polishing separator(s) calibrated for the separation of copper wires.Type: ApplicationFiled: March 30, 2017Publication date: October 5, 2017Inventor: Danilo MOLTENI
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Publication number: 20170253464Abstract: A lifter with electro-permanent magnets is provided. It has an external bearing structure closed at the bottom by a plate, provided with a heat shield, and pole pieces secured under the respective poles and protruding from the bottom plate. Each of the electro-permanent magnets has a reversible magnet arranged on top of one of the poles, of a fixed polarization magnet formed by a plurality of blocks placed along the lateral faces of the pole and of a coil arranged around the reversible magnet to cause the reversal of the polarization of the latter by means of an electrical pulse.Type: ApplicationFiled: August 18, 2015Publication date: September 7, 2017Applicant: SGM GANTRY S.P.A.Inventor: Danilo MOLTENI
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Publication number: 20170133140Abstract: A novel electromagnet for moving tubular members is described, in which the flux lines extend only downwards in the direction of the load whereas the laterally dispersed magnetic field is substantially absent. The polar yoke of such an electromagnet has two North polarity cores on which two solenoids are wound, protected on the bottom by annular baffles made from non-magnetic material, and side panels made from ferromagnetic material extend along both sides and pass next to the two cores magnetically connecting the three South polarity poles, the side panels being magnetically insulated from the two cores. The thickness of the side panels is sized such that they are suitable to short-circuit the whole lateral flux preventing the dispersion thereof and conveying it completely towards the polar shoes of the three poles and into the material to be magnetized thus actively contributing to the lifting of the latter.Type: ApplicationFiled: January 23, 2017Publication date: May 11, 2017Inventor: Danilo MOLTENI
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Patent number: 9475063Abstract: An electromagnetic drum for magnetic separator comprises a cylindrical structure (6) of ferromagnetic material provided with a plurality of solenoids (2a, 2b) wound on pole bodies (1a, 1b) having pole shoes (3a, 4a; 3b, 4b) arranged at the radially distal end thereof, said pole bodies (1a, 1b) and the solenoids (2a, 2b) wound thereon being all arranged on a same side of a longitudinal midplane of the drum, the solenoids (2a, 2b) having their axes substantially perpendicular to the longitudinal drum axis and each pole body (1a, 1b) extending mainly in a plane substantially perpendicular to said drum axis and substantially parallel to the planes of the other pole bodies (1a, 1b). Such a drum can provide a magnetic field suitable to draw even very large and heavy ferromagnetic scrap without having to face polarity changes along the circumferential path and while retaining cost and size similar to conventional drums.Type: GrantFiled: October 31, 2013Date of Patent: October 25, 2016Assignee: SGM GANTRY S.P.A.Inventor: Danilo Molteni
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Patent number: 9375727Abstract: In a drum for magnetic separator comprising a cylinder (C) of ferromagnetic material on the outside of which there are formed a plurality of longitudinal grooves (6) housing permanent magnets (7) arranged in longitudinal rows along a magnetic arc of 130°-160° with alternate N-S polarity, the cylinder (C) being located within a shell (M) of nonmagnetic material, the length (D) of the single dipole of the magnetic circuit is comprised in a range between 100 and 150 mm so as to provide a substantially homogeneous magnetic field along the whole magnetic arc, thanks to the limited length (D) of the dipole which results in a sinusoidal pattern of very limited amplitude and therefore with nominal values of the magnetic field that are present over almost 100% of the magnetic arc.Type: GrantFiled: October 29, 2013Date of Patent: June 28, 2016Assignee: SGM GANTRY S.P.A.Inventor: Danilo Molteni
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Publication number: 20150336108Abstract: In a drum for magnetic separator comprising a cylinder (C) of ferromagnetic material on the outside of which there are formed a plurality of longitudinal grooves (6) housing permanent magnets (7) arranged in longitudinal rows along a magnetic arc of 130°-160° with alternate N-S polarity, the cylinder (C) being located within a shell (M) of nonmagnetic material, the length (D) of the single dipole of the magnetic circuit is comprised in a range between 100 and 150 mm so as to provide a substantially homogeneous magnetic field along the whole magnetic arc, thanks to the limited length (D) of the dipole which results in a sinusoidal pattern of very limited amplitude and therefore with nominal values of the magnetic field that are present over almost 100% of the magnetic arc.Type: ApplicationFiled: October 29, 2013Publication date: November 26, 2015Inventor: Danilo MOLTENI
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Publication number: 20150290656Abstract: An electromagnetic drum for magnetic separator comprises a cylindrical structure (6) of ferromagnetic material provided with a plurality of solenoids (2a, 2b) wound on pole bodies (1a, 1b) having pole shoes (3a, 4a; 3b, 4b) arranged at the radially distal end thereof, said pole bodies (1a, 1b) and the solenoids (2a, 2b) wound thereon being all arranged on a same side of a longitudinal midplane of the drum, the solenoids (2a, 2b) having their axes substantially perpendicular to the longitudinal drum axis and each pole body (1a, 1b) extending mainly in a plane substantially perpendicular to said drum axis and substantially parallel to the planes of the other pole bodies (1a, 1b). Such a drum can provide a magnetic field suitable to draw even very large and heavy ferromagnetic scrap without having to face polarity changes along the circumferential path and while retaining cost and size similar to conventional drums.Type: ApplicationFiled: October 31, 2013Publication date: October 15, 2015Inventor: Danilo Molteni
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Publication number: 20150291397Abstract: A lifter with electro-permanent magnets comprises an external bearing structure (2, 3) closed at the bottom by a plate, provided with a heat shield (9), from which the circuit poles (1) protrude with their pole pieces (5), each of the electro-permanent magnets being composed of a reversible magnet (6) arranged on top of one of said poles (1), of a fixed polarization magnet (7) formed by a plurality of blocks placed along the lateral faces of the pole (1) and of a coil (8) arranged around the reversible magnet (6) to cause the reversal of the polarization of the latter by means of an electrical pulse, the fixed polarization magnet (7) being made of an alloy of samarium-cobalt that has a Curie point of about 770° C. and a residual coercive field able to resist the pulse of polarization reversal of the reversible magnet (6) even when the lifter operates on materials at 600-650° C.Type: ApplicationFiled: November 14, 2013Publication date: October 15, 2015Applicant: SGM Gantry S.p.A.Inventor: Danilo Molteni
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Patent number: 8919839Abstract: An electromagnetic lifter comprises at least two polar expansions (4), shaped for transporting a horizontal axis coil or the like, arranged perpendicularly to the axis of the coil to be lifted, divided into two halves (4a, 4b) slidable with respect to each other under the action of an actuator mechanism (5) and shaped so as to be able to penetrate each other. The adjustability of the polar expansions (4) allows them to better adapt to the different diameters of the coils to be lifted, with the result of exploiting the greatest possible useful polar section and of reducing to a minimum the operational air gaps, whereby the lifter need not be oversized to take into account the most unfavourable case and it results smaller, lighter and cheaper.Type: GrantFiled: September 1, 2009Date of Patent: December 30, 2014Assignee: SGM Gantry S.p.A.Inventor: Danilo Molteni
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Patent number: 8210585Abstract: An electromagnetic lifter includes at least two polar expansions shaped for transporting a horizontal axis coil of hot-rolled steel. The polar expansions are connected through a ferromagnetic circuit and respective cores around which solenoids are arranged. A detection coil is arranged around each of the cores suitable to detect the change in the flux linked to the coil, and a control unit connected to the detection coils compares the values detected by each of them in order to authorize or not the transport. The relevant operating method includes a first check that the difference between the values detected by the two detection coils is below a preset threshold, and in the affirmative a second check that the overall decrease in the linked flux is below a second preset threshold, the issuance of an authorization signal to the transport being possible only in case of positive outcome of both checks.Type: GrantFiled: August 10, 2007Date of Patent: July 3, 2012Assignee: SGM Gantry S.p.A.Inventor: Danilo Molteni
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Publication number: 20120153650Abstract: An electromagnetic lifter comprises at least two polar expansions (4), shaped for transporting a horizontal axis coil or the like, arranged perpendicularly to the axis of the coil to be lifted, divided into two halves (4a, 4b) slidable with respect to each other under the action of an actuator mechanism (5) and shaped so as to be able to penetrate each other. The adjustability of the polar expansions (4) allows them to better adapt to the different diameters of the coils to be lifted, with the result of exploiting the greatest possible useful polar section and of reducing to a minimum the operational air gaps, whereby the lifter need not be oversized to take into account the most unfavourable case and it results smaller, lighter and cheaper.Type: ApplicationFiled: September 1, 2009Publication date: June 21, 2012Applicant: SGM GANTRY S.P.A.Inventor: Danilo Molteni
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Publication number: 20120105180Abstract: A novel electromagnet for moving tubular members is described, in which the flux lines extend only downwards in the direction of the load whereas the laterally dispersed magnetic field is substantially absent. The polar yoke of such an electromagnet has two North polarity cores on which two solenoids are wound, protected on the bottom by annular baffles made from non-magnetic material, and side panels made from ferromagnetic material extend along both sides and pass next to the two cores magnetically connecting the three South polarity poles, the side panels being magnetically insulated from the two cores. The thickness of the side panels is sized such that they are suitable to short-circuit the whole lateral flux preventing the dispersion thereof and conveying it completely towards the polar shoes of the three poles and into the material to be magnetized thus actively contributing to the lifting of the latter.Type: ApplicationFiled: July 1, 2010Publication date: May 3, 2012Inventor: Danilo Molteni
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Patent number: 8056730Abstract: A magnetic separator conventionally includes a conveyor belt (1) that forms a closed loop around a magnetic roller (2) and an idler roller (3) to convey a mix of materials (4), the novel aspect being that the belt (1) is not driven by the roller (2) but by the idler roller (3) that is motorized, and in that the belt (1) is not wound directly on the roller (2) but on an idle tube (3?) of non-magnetic material inside which the roller (2) is arranged with a minimum gap. It is therefore possible to obtain two surfaces with a relative slip and therefore two different speeds whereby the attracted material, during the path defined by the 180° of tangency to the magnetic area, due to the backing or advancing of the magnetic polarities tends to rotate backward or forward with respect to the travel direction of the belt.Type: GrantFiled: June 7, 2004Date of Patent: November 15, 2011Assignee: SGM Gantry S.p.A.Inventor: Danilo Molteni
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Publication number: 20110140468Abstract: An electromagnetic lifter (1) comprises at least two polar expansions (2, 3) shaped for transporting a horizontal axis coil (4) of hot-rolled steel, the polar expansions (2, 3) being connected through a ferromagnetic circuit (5) and respective cores (6, 7) around which solenoids (8, 9) are arranged, furthermore around each of said cores (6, 7) there is arranged a detection coil (10, 11) suitable to detect the change in the flux linked to the coil (4), and a control unit (16) connected to the detection coils (10, 11) compares the values detected by each of them in order to authorize or not the transport. The relevant operating method includes a first check that the difference between the values detected by the two detection coils (10, 11) is below a preset threshold, and in the affirmative a second check that the overall decrease in the linked flux is below a second preset threshold, the issue of a signal of authorization to the transport being possible only in case of positive outcome of both checks.Type: ApplicationFiled: August 10, 2007Publication date: June 16, 2011Inventor: Danilo Molteni
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Patent number: 7918345Abstract: Electromagnetic separator comprising two or more solenoids (6, 7) arranged inside a rotatable drum (1) and connected to a continuous current power supply (8) for generating a magnetic field suitable for separating ferromagnetic parts, wherein said power supply (8) supplies a current being substantially constant in time. The invention also relates to a separation method that can be carried out by means of said electromagnetic separator.Type: GrantFiled: June 15, 2006Date of Patent: April 5, 2011Assignee: SGM Gantry S.p.A.Inventor: Danilo Molteni
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Publication number: 20090314690Abstract: Electromagnetic separator comprising two or more solenoids (6, 7) arranged inside a rotatable drum (1) and connected to a continuous current power supply (8) for generating a magnetic field suitable for separating ferromagnetic parts, wherein said power supply (8) supplies a current being substantially constant in time. The invention also relates to a separation method that can be carried out by means of said electromagnetic separator.Type: ApplicationFiled: June 15, 2006Publication date: December 24, 2009Applicant: SGM Gantry S.p.A.Inventor: Danilo Molteni
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Patent number: 7564333Abstract: A magnetic separator with permanent magnets includes a ferromagnetic member (2) for the circuit connection between at least two magnetic poles (3C) made up of ferrite magnets (12) in the bottom portion in contact with said ferromagnetic member (2) for the circuit connection, and of rare earth magnets (13) in the top portion that represents the entrance/exit surface (14) of the magnetic flux lines (15, 16). The ratio between the effective magnetic length of the ferrite magnets (12) and of the rare earth magnets (13) is preferably 2:1, and the preferred materials are strontium ferrite for the former and iron-boron-neodymium for the latter. In this way it is possible to combine the magnetic characteristics of the two types of permanent magnets so as to make them complementary and thus enhance the attractive effectiveness of the separator both for ferromagnetic materials with high or low shape factor, and for materials with high or low and sometimes very low permeability.Type: GrantFiled: November 7, 2003Date of Patent: July 21, 2009Assignee: SGM Gantry S.p.A.Inventor: Danilo Molteni