# US 11,440,019 B2 · High-throughput milling device comprising an adjustable milling operation > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 11,440,019 B2 - Document ID: US11440019B2 - Status: Granted - Kind: B2 - Application number: 16/309,636 - Filed: 2017-06-23 - Published: 2019-10-10 - Granted: 2022-09-13 - Earliest claimed: 2016-06-28 - Assignees: Frewitt Fabrique De Machines SA - Applicants: Frewitt Fabrique De Machines SA - Inventors: Antoine Virdis - Web page: https://patentgrep.com/patent/US11440019B2 ## CPC - B02C 18/062: {with rotor elements extending axially in close radial proximity of a concentrically arranged slotted or perforated ring} - B02C 18/186: {Axially elongated knives} - B02C 18/24: Drives - E04F 11/1863: {Built-in aids for ascending or descending stairs (lifts associated with stairs B66B9/08)} - B02C: CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN ({household tools and machines for pulverising foodstuffs, e.g. coffee and spice mills A47J42/00; pharmaceutical mortars A61J3/02; mechanical processing of refuse and garbage B03B9/06; dressing mould materials by grinding B22C5/04}; obtaining metallic powder by crushing, grinding or milling B22F9/04; {recovery of plastics by disintegrating B29B17/00; crushing raw materials in starch making C08B30/02; beaters for papermaking D21D1/02; crushing devices specially for transport in mines E21F13/002; slag crushing devices F23J1/00; fuel milling devices in combustion apparatus F23K1/00; household devices for crushing coal F24B15/02; ice disintegrating devices F25C5/02}) - E04F: FINISHING WORK ON BUILDINGS, e.g. STAIRS, FLOORS (windows, doors E06B) ## Abstract 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. ## Claims ### Claim 1 A milling device for carrying out a milling operation, comprising: a milling unit including a body comprising a milling chamber which can be filled with material to be milled, a rotor rotatably mounted around a rotation axis in the body, a plurality of blades, a screen, and a drive unit controlling the movements of the rotor with respect to the screen during the milling operation; wherein the drive unit is designed to impart an oscillation movement to the rotor around the rotation axis, an oscillation angle being variable during the milling operation; wherein the milling chamber is configured to direct the product to be milled in a direction parallel to the rotation axis of the rotor; wherein the milling device further comprises a transmission element comprising a milling shaft on which is mounted the rotor, the transmission element being arranged for transmitting the drive of the drive unit to the milling shaft; the rotor being mounted vertically, concentric with the screen; and wherein the rotor comprises a bearing arranged to be mounted on the milling shaft parallel to the rotation axis of the rotor and a disk extending radially from the bearing; the disk being frustoconical in shape so as to guide the material to be milled towards the screen. ### Claim 2 (depends on 1) The milling device of claim 1, wherein the screen is cylindrical and concentric with the rotation axis of the rotor. ### Claim 3 (depends on 1) The milling device according to claim 1, wherein the rotor comprises the plurality of blades, said blades being concentric with parallel to said rotation axis, and wherein the frustoconical shape of the disk guides the material to be milled towards the blades. ### Claim 4 (depends on 3) The milling device according to claim 3, wherein a first longitudinal face of a blade of the plurality of blades has a profile which differs from a second longitudinal face opposite the first face, so that two milling processes can be performed according to the direction of rotation of the rotor. ### Claim 5 (depends on 3) The milling device according to claim 3, wherein the blades are configured so as to exert thrust of the material to be ground towards the screen. ### Claim 6 (depends on 1) The milling device according to claim 1, wherein the transmission element comprises a transmission joint for driving the milling shaft through a transmission shaft, orthogonal to the milling shaft. ### Claim 7 (depends on 1) The milling device of claim 1, further comprising a connection unit configured for connecting the transmission element to the drive unit in a removable and operable manner. ### Claim 8 (depends on 7) The milling device according to claim 7, wherein the connection unit comprises an adapter module configured to match the characteristics of the drive unit to the needs of the milling unit operatively connected to the drive unit. ### Claim 9 (depends on 1) The milling device according to claim 1, wherein the oscillation movement comprises an oscillation frequency which can be varied during the milling operation. ### Claim 10 (depends on 1) The milling device according to claim 1, wherein the oscillation angle can be offset during the milling operation. ### Claim 11 (depends on 1) The milling device according to claim 1, wherein the rotational speed of the rotor can be varied during the milling operation. ### Claim 12 A milling device for carrying out a milling operation, comprising: a milling unit including a body comprising a milling chamber which can be filled with material to be milled, a rotor rotatably mounted around a rotation axis in the body, a screen, and a drive unit controlling the movements of the rotor with respect to the screen during the milling operation; wherein the drive unit is designed to impart an oscillation movement to the rotor around the rotation axis, an oscillation angle being variable during the milling operation; wherein the milling chamber is configured to direct the product to be milled in a direction parallel to the rotation axis of the rotor; wherein the milling device further comprises a transmission element comprising a milling shaft on which is mounted the rotor, the transmission element being arranged for transmitting the drive of the drive unit to the milling shaft; the rotor being mounted vertically, concentric with the screen; wherein the rotor comprises a bearing arranged to be mounted on the milling shaft parallel to the rotation axis of the rotor and a disk extending radially from the bearing, the disk being frustoconical in shape so as to guide the material to be milled towards the screen; and wherein the rotor comprises a plurality of blades concentric with the rotation axis and parallel to said rotation axis, and wherein the frustoconical shape of the disk guides the material to be milled towards the blades. ### Claim 13 A milling device for carrying out a milling operation, comprising: a milling unit including a body comprising a milling chamber which can be filled with material to be milled, a rotor rotatably mounted around a rotation axis in the body, a screen, and a drive unit controlling the movements of the rotor with respect to the screen during the milling operation; wherein the drive unit is designed to impart an oscillation movement to the rotor around the rotation axis, an oscillation angle being variable during the milling operation; wherein the milling chamber is configured to direct the product to be milled in a direction parallel to the rotation axis of the rotor; wherein the milling device further comprises a transmission element comprising a milling shaft on which is mounted the rotor, the transmission element being arranged for transmitting the drive of the drive unit to the milling shaft; the rotor being mounted vertically, concentric with the screen; wherein the rotor comprises a bearing arranged to be mounted on the milling shaft parallel to the rotation axis of the rotor and a disk extending radially from the bearing, the disk being frustoconical in shape so as to guide the material to be milled towards the screen; and wherein the rotor comprises a plurality of blades concentric with the rotation axis, parallel to said rotation axis and mounted at the periphery of the disk, and wherein the frustoconical shape of the disk guides the material to be milled towards the blades.