# US 10,864,523 B2 · Shredder blade assembly > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,864,523 B2 - Document ID: US10864523B2 - Status: Granted - Kind: B2 - Application number: 14/282,093 - Filed: 2014-05-20 - Published: 2015-11-26 - Granted: 2020-12-15 - Earliest claimed: 2014-05-20 - Assignees: Eco Green Equipment, LLC - Applicants: Eco Green Equipment, LLC - Inventors: Ted Bushman Rogers; Michael Bradley Swenson - Web page: https://patentgrep.com/patent/US10864523B2 ## CPC - B02C 18/18: Knives; Mountings thereof - B02C 18/142: {with two or more inter-engaging rotatable cutter assemblies} - B02C 18/184: {with peripherally arranged demountable cutting tips or elements} - B02C 2210/02: Features for generally used wear parts on beaters, knives, rollers, anvils, linings and the like - 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 A shredder blade assembly is disclosed having a rotor configured to be mounted on a rotating shaft, the rotor having opposing faces with a plurality of angled knife receptacles and a plurality of knife inserts mounted within the plurality of knife receptacles. Each knife insert has two opposing faces and each opposing face comprises three cutting edges such that each knife insert has six cutting edges. Only one of the cutting edges is exposed at an outer peripheral edge of the shredder blade assembly during use. The knife inserts are configured to be removed, rotated (and flipped as needed), and re-mounted within the plurality of knife receptacles to expose another of the cutting edges at the outer peripheral edge of the shredder blade assembly. The knife insert may be triangular and mounted to expose one vertex to create a plurality of tooth/hook projections. ## Claims ### Claim 1 A shredder blade assembly comprising: a rotor configured to be mounted on a rotating shaft, the rotor having opposing faces, wherein each opposing face includes a plurality of angled knife receptacles; and a plurality of triangular knife inserts removably mounted to the votoiwithin the plurality of knife receptacles, wherein the knife inserts are mounted to expose one vertex of the triangular knife insert at an outer circumference of the blade assembly to create a plurality of tooth/hook projections and wherein the knife inserts are configured to be removed, rotated, and re-mounted to the rotor within the plurality of knife receptacles. ### Claim 2 (depends on 1) The shredder blade assembly according to claim 1, wherein the plurality of tooth/hook projections of the knife inserts mounted on each opposing face are staggered. ### Claim 3 (depends on 1) The shredder blade assembly according to claim 1, wherein the knife inserts are configured in the shape of an equilateral triangle. ### Claim 4 (depends on 1) The shredder blade assembly according to claim 1, wherein the knife inserts and the knife receptacles comprise symmetrical hole patterns for fastening the knife inserts to the rotor. ### Claim 5 (depends on 1) The shredder blade assembly according to claim 1, wherein the knife inserts are also configured to be removed, flipped, and re-mounted within the plurality of knife receptacles. ### Claim 6 (depends on 1) The shredder blade assembly according to claim 1, wherein the knife inserts are fabricated of high alloy steel or tool steel. ### Claim 7 (depends on 1) The shredder blade assembly according to claim 1, wherein the knife inserts are coated with a wear resistant coating. ### Claim 8 (depends on 1) The shredder blade assembly according to claim 1, wherein the knife inserts comprise carbide wear edges. ### Claim 9 (depends on 1) A rotary shedder shredder machine comprising a plurality of pairs of shredder blade assemblies as defined in claim 1, wherein the shredder blade assemblies are mounted on counter rotating parallel shafts, wherein the shredder blade assemblies are spaced apart by a plurality of spacers to enable outer peripheral cutting edges of the blade assemblies mounted on one shaft to engage outer peripheral cutting edges of corresponding blade assemblies mounted on the other shaft. ### Claim 10 A shredder blade assembly comprising: a rotor configured to be mounted on a rotating shaft, the rotor having opposing faces, wherein each opposing face includes a plurality of angled knife receptacles; and a plurality of knife inserts mounted to the rotor within the plurality of knife receptacles, wherein each knife insert has two opposing faces and each opposing face comprises three cutting edges configured such that only one of the cutting edges is exposed at an outer peripheral edge of the shredder blade assembly, and wherein the knife inserts are configured to be removed, rotated, and re-mounted to the rotor within the plurality of knife receptacles to expose another of the cutting edges at the outer peripheral edge of the shredder blade assembly. ### Claim 11 (depends on 10) The shredder blade assembly according to claim 10, wherein the knife inserts are triangular and are mounted to expose one vertex of the triangular knife insert at an outer circumference of the blade assembly to create a plurality of tooth/hook projections. ### Claim 12 (depends on 11) The shredder blade assembly according to claim 11 wherein the plurality of tooth/hook projections of the knife inserts mounted on each opposing face are staggered. ### Claim 13 (depends on 10) The shredder blade assembly according to claim 10, wherein the knife inserts are configured in a modified triangular shape. ### Claim 14 (depends on 10) The shredder blade assembly according to claim 10, wherein the knife inserts and the knife receptacles comprise symmetrical hole patterns for fastening the knife inserts to the rotor. ### Claim 15 (depends on 10) The shredder blade assembly according to claim 10, wherein the knife inserts are also configured to be removed, flipped, and re-mounted within the plurality of knife receptacles. ### Claim 16 (depends on 10) The shredder blade assembly according to claim 10, wherein the knife inserts are fabricated of high alloy steel or tool steel. ### Claim 17 (depends on 10) The shredder blade assembly according to claim 10, wherein the knife inserts are coated with a wear resistant coating. ### Claim 18 (depends on 10) The shredder blade assembly according to claim 10, wherein the knife inserts comprise carbide wear edges. ### Claim 19 (depends on 10) A rotary shredder machine comprising a plurality of pairs of shredder blade assemblies as defined in claim 10, wherein the shredder blade assemblies are mounted on counter rotating parallel shafts, wherein the shredder blade assemblies are spaced apart by a plurality of spacers to enable outer peripheral cutting edges of the blade assemblies mounted on one shaft to engage outer peripheral cutting edges of corresponding blade assemblies mounted on the other shaft.