# US 7,611,556 B2 · Cyclonic tool > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 7,611,556 B2 - Document ID: US7611556B2 - Status: Granted - Kind: B2 - Application number: 11/327,142 - Filed: 2006-01-06 - Published: 2006-07-13 - Granted: 2009-11-03 - Earliest claimed: 2005-01-11 - Assignees: Positec Power Tools (Suzhou) Co., Ltd. - Inventors: Gianni Borinato - Web page: https://patentgrep.com/patent/US7611556B2 ## CPC - B23Q 11/0046: {by sucking} - B24B 55/10: specially designed for portable grinding machines, e.g. hand-guided - Y02P 70/10: Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working - B23Q: DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING (tools of the kind used in lathes or boring machines B23B27/00); MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT - B24B: MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING (grinding of gear teeth B23F, of screw-threads B23G1/36; by electro-erosion B23H; abrasive or related blasting B24C; tools for grinding, buffing or sharpening B24D; polishing compositions C09G1/00; abrasives C09K3/14; electrolytic etching or polishing C25F3/00; grinding arrangements for use on assembled railway tracks E01B31/17); DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS - Y02P: CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS ## Abstract A tool for shaping a material which, in use, generates dust. The tool (e.g., sander) has an outlet for discharging air and dust, a dust recovery chamber which is sealed during operation and at least one cyclone. The cyclone has an inlet port which is coupled to the outlet, an outlet port which communicates with the dust recovery chamber and an air vent from which cleaned air is expelled. ## Claims ### Claim 1 A tool for shaping a material comprising: a housing adapted externally to remove material particulates from the material; an outlet in the housing through which in use the material particulates are pneumatically discharged; a particulate recovery chamber having a wall comprising a sealable particulate recovery port; and at least one cyclone located inside the particulate recovery chamber, said cyclone comprising: an elongate body having a first end and a second end; an inlet port at or near to the first end of the elongate body, wherein the inlet port is coupled to the outlet; an outlet port at or near to a second end of the elongate body adapted to convey the material particulates into the particulate recovery chamber; and an air vent for expelling air from the elongate body. ### Claim 2 (depends on 1) The tool of claim 1, further comprising a fan arranged within the housing so as to drive air and the material particulates through the outlet. ### Claim 3 (depends on 1) The tool of claim 1, further comprising a fan arranged within the housing so as to suck air from the air vent and cause material particulates to be pneumatically discharged from the outlet. ### Claim 4 (depends on 1) The tool of claim 1, wherein the particulate recovery chamber is substantially cuboidal. ### Claim 5 (depends on 1) The tool of claim 1, wherein the particulate recovery chamber has a plurality of corners, and wherein the cyclone is arranged in or through one of the corners. ### Claim 6 (depends on 1) The tool of claim 1, wherein the cyclone has a first longitudinal axis and the particulate recovery chamber is elongate and has a second longitudinal axis, wherein the first longitudinal axis is substantially parallel to the second longitudinal axis. ### Claim 7 (depends on 1) The tool of claim 1, further comprising a handle mounted on the exterior of the housing, wherein either or both of the cyclone and the particulate recovery chamber is arranged beneath the handle. ### Claim 8 (depends on 1) The tool of claim 1, wherein either or both of the cyclone and the particulate recovery chamber is plastic. ### Claim 9 (depends on 1) The tool of claim 1, wherein said tool comprises at least two cyclones in juxtaposition. ### Claim 10 (depends on 1) The tool of claim 1, wherein the cyclone and the particulate recovery chamber form a unit which is attached to the housing. ### Claim 11 (depends on 1) The tool of claim 1, wherein the particulate recovery chamber has an essentially trapezoidal cross-section. ### Claim 12 (depends on 1) The tool of claim 1, wherein the particulate recovery chamber comprises a proximal wall, a distal wall, and at least one side wall, wherein the cyclone is attached to the distal wall. ### Claim 13 (depends on 12) The tool of claim 12, wherein the proximal wall is attached to the housing, and wherein the distal wall incorporates the air vent. ### Claim 14 (depends on 12) The tool of claim 12, further comprising a tube for coupling the outlet to the inlet port. ### Claim 15 (depends on 14) The tool of claim 14, wherein the particulate recovery chamber comprises at least one wall, and wherein the tube is mounted on an inner surface of the wall. ### Claim 16 (depends on 1) The tool of claim 1, wherein the air vent communicates directly with the surroundings. ### Claim 17 (depends on 1) The tool of claim 1, wherein the housing comprises a first interior cavity and a second interior cavity, wherein the first interior cavity is separate from the second interior cavity. ### Claim 18 (depends on 17) The tool of claim 17, further comprising a transportation fan positioned in the first interior cavity and a cooling fan and an electrical motor positioned in the second interior cavity. ### Claim 19 (depends on 18) The tool of claim 18, further comprising an air return tube coupling the air vent and the first interior cavity, and wherein the transportation fan is an air transportation fan. ### Claim 20 (depends on 19) The tool of claim 19, wherein the air return tube is mounted on the exterior of the particulate recovery chamber. ### Claim 21 (depends on 1) The tool of claim 1, wherein the particulate recovery chamber comprises a proximal wall, a distal wall, and at least one side wall, wherein the cyclone is attached to the proximal wall. ### Claim 22 (depends on 21) The tool of claim 21, wherein the particulate recovery chamber has a rectangular cross-section. ### Claim 23 (depends on 1) The tool of claim 1, wherein a base wall of the particulate recovery chamber is arranged higher than or equal to the base of the housing. ### Claim 24 (depends on 1) The tool of claim 1, wherein said tool is a sander. ### Claim 25 (depends on 24) The tool of claim 24, wherein said sander is an electric sander.