Patents Assigned to Frewitt Fabrique de Machines SA
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Patent number: 12053784Abstract: A powder processing apparatus comprising a processing head functionally fixed to a driving unit via a fixation device. The processing head comprises an inlet connecting unit configured to be connected to an input container containing the material to be processed and an outlet connecting unit configured to be connected to an output container destined to receive the processed material. The fixation device comprises a pivoting element configured to rotate the processing head around a pivoting axis by a rotation angle between a first angular position where the material contained in the input container can be inputted in the processing head and where the processed material can be outputted in the output container, and a second angular position where the input container being on a base can be connected to the inlet connecting unit. Also disclosed is a method of using the powder processing apparatus.Type: GrantFiled: December 21, 2021Date of Patent: August 6, 2024Assignee: FREWITT FABRIQUE DE MACHINES SAInventors: Yves Grossrieder, Antoine Virdis
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Patent number: 11440019Abstract: A milling device for implementing a milling operation including a milling unit having a body including a milling chamber that can be filled with a material to be milled, a rotor mounted so as to be able to rotate around a shaft in the body, a screen, and a drive unit controlling the movements of the rotor with respect to the screen during the milling operation. The drive unit is designed to impart an oscillating movement to the rotor around the shaft, the oscillation angle being variable during the milling operation. The milling chamber is configured to direct the product to be milled in a direction substantially parallel to the rotation shaft of the rotor.Type: GrantFiled: June 23, 2017Date of Patent: September 13, 2022Assignee: FREWITT FABRIQUE DE MACHINES SAInventor: Antoine Virdis
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Patent number: 11376602Abstract: A vacuum grinding system having multiple elements connected in series. The elements include an input chamber next to the system input, which chamber can be fluidically connected to a vacuum pump; a grinding chamber which is arranged downstream of the input chamber and which can be fluidically connected to a vacuum pump; and an output chamber, downstream of the grinding chamber and next to the output system, which output chamber can also be fluidically connected to a vacuum pump.Type: GrantFiled: December 7, 2015Date of Patent: July 5, 2022Assignee: FREWITT FABRIQUE DE MACHINES SAInventors: Antoine Virdis, Christophe Pasquier
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Patent number: 10926271Abstract: A grinding device including a rotor, mounted in rotational manner around an axle and having a plurality of blades extending radially relative to the axle. A sieve has a plurality of openings, with the sieve being mounted around the rotor so as to turn around the axle in the direction opposite the direction of rotation of the rotor. The rotor and sieve each has a height extending parallel to the axle and a width extending perpendicular to the axle wherein the width is between 1 mm and 20 mm. The rotation of the rotor and of the sieve is adjustable so as to reach a difference in circumferential speed between the rotor and the sieve between 100 m/s and 400 m/s, so as to reduce the average initial size of the crushed matter by a factor of 5 to 20.Type: GrantFiled: October 25, 2018Date of Patent: February 23, 2021Assignee: FREWITT FABRIQUE DE MACHINES SAInventors: Glenn Corminboeuf, Antoine Virdis
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Patent number: 9289776Abstract: A milling device for performing a milling operation comprising a milling unit comprising a housing defining a milling chamber that can be filled with a material to be milled, a rotor assembly rotatably mounted in the housing, and a screen assembly for fractionating the material milled by the rotor assembly in movement and extending below the rotor assembly; and a drive unit adapted for controlling the movements of the rotor assembly relative to the screen assembly during the milling operation; wherein said drive unit is configured to produce an oscillating movement of the rotor assembly, the oscillating movement having an oscillation angle that can be varied during the milling operation when controlling the movements of the rotor assembly relative to the screen assembly. The milling device has improved milling efficiency.Type: GrantFiled: January 8, 2013Date of Patent: March 22, 2016Assignee: FREWITT FABRIQUE DE MACHINES SAInventors: Antoine Virdis, Xin Gao
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Publication number: 20130119172Abstract: A milling device for performing a milling operation comprising a milling unit comprising a housing defining a milling chamber that can be filled with a material to be milled, a rotor assembly rotatably mounted in the housing, and a screen assembly for fractionating the material milled by the rotor assembly in movement and extending below the rotor assembly; and a drive unit adapted for controlling the movements of the rotor assembly relative to the screen assembly during the milling operation; wherein said drive unit is configured to produce an oscillating movement of the rotor assembly, the oscillating movement having an oscillation angle that can be varied during the milling operation when controlling the movements of the rotor assembly relative to the screen assembly. The milling device has improved milling efficiency.Type: ApplicationFiled: January 8, 2013Publication date: May 16, 2013Applicant: Frewitt Fabrique de Machines SAInventor: Frewitt Fabrique de Machines SA
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Patent number: 8205817Abstract: A bead mill for performing wet comminuting including a stationary vessel having an internal wall and forming a milling chamber to be filled at least partly with milling bodies, raw particles and a carrying liquid to form a suspension within the milling chamber; an activator shaft, rotatable around an axis concentric with the stationary vessel and a rotating activator connected to the activator shaft, to comminute said raw particles to produce milled particles; characterized in that said bead mill further comprises a separator, containing a separator chamber disposed substantially vertically, a laminarization portion providing an upward laminar suspension flow within the separator chamber, to separate the milled particles from the milling beads and raw particles depending on the flow velocity of said upward laminar suspension flow.Type: GrantFiled: January 7, 2011Date of Patent: June 26, 2012Assignee: Frewitt Fabrique de Machines SAInventors: Edward Brook-Levinson, Boris Petrov, Thierry Jomini
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Publication number: 20110168814Abstract: A bead mill for performing wet comminuting comprising a stationary vessel having an internal wall and forming a milling chamber to be filled at least partly with milling bodies, raw particles and a carrying liquid to form a suspension within the milling chamber; an activator shaft, rotatable around an axis concentric with the stationary vessel and a rotating activator connected to the activator shaft, to comminute said raw particles to produce milled particles; characterized in that said bead mill further comprises a separator, containing a separator chamber disposed substantially vertically, a laminarization portion providing an upward laminar suspension flow within the separator chamber, to separate the milled particles from the milling beads and raw particles depending on the flow velocity of said upward laminar suspension flow.Type: ApplicationFiled: January 7, 2011Publication date: July 14, 2011Applicant: FREWITT FABRIQUE DE MACHINES SAInventors: Edward Brook-Levinson, Boris Petrov, Thierry Jomini