# US 2004/0069879 A1 · Cutting device, particularly for comminuting chips > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2004/0069879 A1 - Document ID: US20040069879A1 - Status: Published application - Kind: A1 - Application number: 10/358,203 - Filed: 2003-02-05 - Published: 2004-04-15 - Earliest claimed: 2002-02-05 - Inventors: Bruno Binder; Lothar Habermehl - Web page: https://patentgrep.com/patent/US20040069879A1 ## CPC - B02C 18/14: within horizontal containers {(B02C18/062, B02C18/065 take precedence)} - B02C 18/08: within vertical containers {(B02C18/062, B02C18/065 take precedence)} - B02C 18/16: Details - B02C 18/18: Knives; Mountings thereof - B02C 18/182: {Disc-shaped knives} - B02C 2018/164: {Prevention of jamming and/or overload} - 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}) ## Abstract The invention relates to a cutting device, in particular for comminuting chips, with at least one cutting blade and at least one rotating feed blade arranged on a longitudinal axis, wherein the feed blade or blades in the feed section of the cutting device works together with the cutting blade or blades. ## Claims ### Claim 1 A cutting device for comminuting chips, comprising: at least one cutting blade and at least one rotating feed blade arranged on a longitudinal axis, wherein the at least one feed blade in the feed section of the cutting device works in conjunction with the at least one cutting blade. ### Claim 2 (depends on 1) The cutting device according to claim 1, wherein the longitudinal axis is oriented in a vertical direction. ### Claim 3 (depends on 1) The cutting device according to claim 1, wherein a chip feed is provided in a horizontal direction. ### Claim 4 (depends on 1) The cutting device according to claim 1, wherein a screw conveyor is provided for feeding the chips. ### Claim 5 (depends on 1) The cutting device according to claim 1, wherein the at least one cutting blade is arranged on the longitudinal axis and has multiple cutting edges. ### Claim 6 (depends on 1) The cutting device according to claim 1, wherein the at least one cutting blade includes at least two different forms of cutting edges. ### Claim 7 (depends on 1) The cutting device according to claim 1, further comprising a side plate, which is arranged at a distance from the at least one feed blade. ### Claim 8 (depends on 1) The cutting device according to claim 1, wherein at least two feed blades are provided, which are arranged at an offset to one another. ### Claim 9 (depends on 8) The cutting device according to claim 8, further comprising a shaft, upon which the at least one feed blade is arranged and has, at least in the region in which the at least one feed blade is located, a profile that repeats over the circumference of the shaft, which interlocks in a positive manner with the corresponding inside profile of the at least one feed blade. ### Claim 10 (depends on 1) The cutting device according to claim 1, further comprising a perforated plate, which is provided in the longitudinal direction of the longitudinal axis. ### Claim 11 (depends on 10) The cutting device according to claim 10, wherein the perforated plate has slotted holes. ### Claim 12 (depends on 10) The cutting device according to claim 10, wherein openings in the perforated plate are arranged about the longitudinal axis and form small chip chambers. ### Claim 13 (depends on 10) The cutting device according to claim 10, wherein the at least one feed blade is arranged in front of the perforated plate, and a rotating separator plate is arranged behind the perforated plate. ### Claim 14 (depends on 12) The cutting device according to claim 12, wherein the small chip chambers of the perforated plate are open alternately to the top and to the bottom. ### Claim 15 (depends on 13) The cutting device according to claim 13, wherein the separator plate is arranged a certain distance away from the perforated plate. ### Claim 16 (depends on 1) The cutting device according to claim 1, wherein the at least one feed blade has cutting edges, said cutting edges having a V-shape. ### Claim 17 (depends on 16) The cutting device according to claim 16, wherein the generating angle of the cutting edges of the at least one feed blade is 45° to 60° in the direction of rotation. ### Claim 18 (depends on 16) The cutting device according to claim 16, wherein the generating angle of the cutting edges of the at least one feed blade is 55° in the direction of rotation. ### Claim 19 (depends on 1) The cutting device according to claim 1, wherein at least one cutting blade is stationary. ### Claim 20 A method for operating a cutting device, the steps comprising: gathering chips into a feed section by at least one feed blade, which is rotating about a longitudinal axis; and comminuting a portion of the chips in the feed section by the cooperation of the at least one feed blade with at least one stationary cutting blade. ### Claim 21 (depends on 18) The method according to claim 18, wherein chip transport is regulated as a function of a load on the cutting device. ### Claim 22 (depends on 18) The method according to claim 18, wherein chip chambers, provided in the bottom section of the cutting device, are opened towards a bottom and a top in alternation.