US3862521A - Abrasive grit exhaust system in grinding machines - Google Patents
Abrasive grit exhaust system in grinding machines Download PDFInfo
- Publication number
- US3862521A US3862521A US350640A US35064073A US3862521A US 3862521 A US3862521 A US 3862521A US 350640 A US350640 A US 350640A US 35064073 A US35064073 A US 35064073A US 3862521 A US3862521 A US 3862521A
- Authority
- US
- United States
- Prior art keywords
- cover
- grinding
- abradable
- grinding material
- grinding wheel
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B24—GRINDING; POLISHING
- B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
- B24B55/00—Safety devices for grinding or polishing machines; Accessories fitted to grinding or polishing machines for keeping tools or parts of the machine in good working condition
- B24B55/06—Dust extraction equipment on grinding or polishing machines
- B24B55/10—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided
- B24B55/102—Dust extraction equipment on grinding or polishing machines specially designed for portable grinding machines, e.g. hand-guided with rotating tools
Definitions
- An abrasive grit exhaust system in grinding machines operating with rotary grinding material comprises a cover adapted to the configuration of the grinding material and connected with a grit exhaust conduit.
- the cover is divided into a part rotating together with the grinding material and a stationary part connected with the grit exhaust conduit, and the two parts of the cover are tightly interconnected.
- the part of the cover rotating together with the grinding material is so adapted to the configuration of the grinding material that there is formed between this cover part and the grinding material a gap which opens into the grinding surface of the grinding material being worn and through which the forming abrasive grit is carried off.
- This invention relates to an abrasive grit exhaust system in a grinding machine equipped with rotary grinding material, and this system comprises a cover adapted tothe configuration of the grinding material and connected with an exhaust conduit.
- the exhaust system serves to carry off the harmful and/or troublesome grit that arises in grinding with portable and manual grinding machines as well as in stationary grinding machines.
- stationary covers have been mounted on the grinding machines and these usually had to be adjusted to ensure full efficiency as the grinding material was worn off.
- the present invention has for its object effectively to eliminate this disadvantage and to this end it provides an abrasive grit exhaust system in which the cover is divided into a part rotating together with the grinding material and a stationary part connected with the exhaust conduit, said two parts being tightly interconnected by a labyrinth-type or like seal, and in which the part of the cover rotating together with the grinding material is so adapted to the configuration of the grinding material that there is formed between said cover part and the grinding material a gap which opens into the grinding surface of the grinding material being worn and through which the forming abrasive grit is carried off, said cover part which rotates together with the grinding material being arranged to be worn off together with the grinding material.
- the part of the cover rotating together with the grinding material thereby ensures a satisfactory exhaust of abrasive grit during the entire life of the grinding material.
- the part of the cover rotating together with the grinding material and arranged to be worn down with it should be manufactured from plastics, fabric, fiber, metal or other suitable material.
- FIG. 1 is a longitudinal section of a grinding machine provided with one embodiment of the exhaust system and operating with a cup-shaped grinding material;
- FIG. 2 is an end view of the part of the cover rotating together with the cup-shaped grinding material
- FIG. 3 is a longitudinal section taken on line IIIIII in FIG. 4 of a grinding machine having an annular grinding disk and provided with a second embodiment of the exhaust system;
- FIG. 4 is an end view of a section of the part of the cover rotating together with the grinding disk
- FIG. 5 is a longitudinal section of a grinding machine having a saucer-shaped grinding disk and provided with a third embodiment of the exhaust system.
- the abrasive grit exhaust system comprises a cover which is divided into a part 3 rotating together with the cup-shaped grinding material 2 and a part 4 fixedly connected with the grinding machine 1.
- the part 3 of said cover is fastened to the member 5 driving the cup-shaped grinding material 2, while the part 4 of the cover is fastened to the neck 6 of the grinding machine 1.
- An exhaust conduit 7 extends from the stationary cover part 4 and is connected to a grit separator and a suction unit.
- the parts 3 and 4 of the cover are tightly interconnected by a labyrinth-type or like seal 8.
- One member of the seal 8 is disposed on the part 3 of the cover while the other member of the seal 8 is disposed on the part 4 of the cover.
- Inside the seal 8 the part 3 of the cover is formed with holes 9 for the air escaping from said cover part 3.
- the part 3 of the cover rotating together with the cup-shaped grinding material 2 is so adapted to the configuration thereof that a gap 10 is formed between the cover parts 2 and 3, through which gap the forming abrasive grit is exhausted.
- the cover part 3 is meant to be worn down together with the cup-shaped grinding material 2.
- the gap 10 is conformed accordingly; as a rule it is of substantially constant width.
- annular grinding disk 11 is provided on both sides with cover portions 12 and 13 which are adapted to rotate to-.
- the cover portions 12 and 13 are connected via labyrinth-type seals with the stationary cover portions 17 and 18, the latter of said stationary cover portions being fastened to the neck 19 of the grinding machine.
- the cover portions 17 and 18 are connected with the common conduit 20 which leads to a grit separator and a suction unit.
- the cover portions 12 and 13 are formed by circular plates or like means which are spaced from the sides of the grinding disk 11 so that gaps 21 and 22 are formed between said sides and the plates 12 and 13.
- the width of the gaps 21 and 22 is determined by spacers 23 and 24 which could directly engage the two sides of the grinding disk 11.
- the spacers engage plates 25 and 26 which bear against the sides of the grinding disk.
- the spacers 23 and 24, respectively are integral with the plates 12, 25 and I3, 26, respectively.
- the grinding disk 11 need not be provided with cover portions on both sides. In certain cases it suffices to have one of said cover portions 12 and 13.
- the saucer-shaped grinding disk 31 which might also be an ordinary grinding wheel, is provided on one side only with a substantially circular plate 32 which is kept spaced a predetermined distance from said side by spacers 34 to provide the gap 33 necessary for exhausting the abrasive grit.
- the stationary cover portion 35 is secured to the neck 37 of the grinding machine 36, and connected through the labyrinth-type seal 38 with the rotary cover portion 32 and through the conduit 39 with the grit separator and the suction unit.
- a grinding apparatus having a rotary grinding wheel and exhaust means for aspirating dust produced by grinding
- the improvement which comprises a housing on the apparatus defining an exhaust passage of said exhaust means, and an abradable cover supported for rotation relative to said housing and in unison with the grinding wheel, said abradable cover and a working surface of the grinding wheel being disposed for concurrent abrasrive contact with a workpiece to be ground, said abradable cover being disposed to define with the grinding wheel a gap in flow communication
- said abradable cover includes a pair of circular plates each disposed in spaced-apart relation to a corresponding end face of the grinding wheel to define therewith respective gaps in flow communication with said exhaust passage.
Abstract
An abrasive grit exhaust system in grinding machines operating with rotary grinding material comprises a cover adapted to the configuration of the grinding material and connected with a grit exhaust conduit. The cover is divided into a part rotating together with the grinding material and a stationary part connected with the grit exhaust conduit, and the two parts of the cover are tightly interconnected. The part of the cover rotating together with the grinding material is so adapted to the configuration of the grinding material that there is formed between this cover part and the grinding material a gap which opens into the grinding surface of the grinding material being worn and through which the forming abrasive grit is carried off. The cover part mentioned is arranged to be worn down together with the grinding material.
Description
United States Patent Isaksson 1 Jan. 28, 1975 [75] Inventor: Lars Goran Torsten Isaksson,
Hogbyvagen, Sweden [73] Assignee: Teda-Lab I Eskilstuna AB,
Eskilstuna, Sweden [22] Filed: Apr. 12, 1973 [21] Appl. No.: 350,640
[30] Foreign Application Priority Data Apr. 14, 1972 Sweden 4833/72 [52] U.S. Cl. 51/273, 51/170 PT, 51/170 T [51] Int. Cl B24b 55/06, B24b 23/00 [58] Field of Search.... 51/272, 273, 170 PT, 170 T, 51/174, 177
[56] References Cited UNITED STATES PATENTS 2,895,266 7/1959 Statler 51/273 X 3,594,958 7/1971 Cusuman0. 51/273 Primary Examiner-Othell M. Simpson Attorney, Agent, or FirmBucknam and Archer [57] ABSTRACT An abrasive grit exhaust system in grinding machines operating with rotary grinding material comprises a cover adapted to the configuration of the grinding material and connected with a grit exhaust conduit. The cover is divided into a part rotating together with the grinding material and a stationary part connected with the grit exhaust conduit, and the two parts of the cover are tightly interconnected. The part of the cover rotating together with the grinding material is so adapted to the configuration of the grinding material that there is formed between this cover part and the grinding material a gap which opens into the grinding surface of the grinding material being worn and through which the forming abrasive grit is carried off.
down together with the grinding material.
5 Claims, 5 Drawing Figures SBEET 10F 3 FIG.)
ABRASIVE GRIT EXHAUST SYSTEM IN GRINDING MACHINES This invention relates to an abrasive grit exhaust system in a grinding machine equipped with rotary grinding material, and this system comprises a cover adapted tothe configuration of the grinding material and connected with an exhaust conduit. The exhaust system serves to carry off the harmful and/or troublesome grit that arises in grinding with portable and manual grinding machines as well as in stationary grinding machines. Previously, stationary covers have been mounted on the grinding machines and these usually had to be adjusted to ensure full efficiency as the grinding material was worn off.
The present invention has for its object effectively to eliminate this disadvantage and to this end it provides an abrasive grit exhaust system in which the cover is divided into a part rotating together with the grinding material and a stationary part connected with the exhaust conduit, said two parts being tightly interconnected by a labyrinth-type or like seal, and in which the part of the cover rotating together with the grinding material is so adapted to the configuration of the grinding material that there is formed between said cover part and the grinding material a gap which opens into the grinding surface of the grinding material being worn and through which the forming abrasive grit is carried off, said cover part which rotates together with the grinding material being arranged to be worn off together with the grinding material. The part of the cover rotating together with the grinding material thereby ensures a satisfactory exhaust of abrasive grit during the entire life of the grinding material. The part of the cover rotating together with the grinding material and arranged to be worn down with it should be manufactured from plastics, fabric, fiber, metal or other suitable material.
The invention will be more fully described hereinbelow with reference to the accompanying drawings illustrating three embodiments, chosen by way of example, of the abrasive grit exhaust device.
In the drawings:
FIG. 1 is a longitudinal section of a grinding machine provided with one embodiment of the exhaust system and operating with a cup-shaped grinding material;
FIG. 2 is an end view of the part of the cover rotating together with the cup-shaped grinding material;
FIG. 3 is a longitudinal section taken on line IIIIII in FIG. 4 of a grinding machine having an annular grinding disk and provided with a second embodiment of the exhaust system;
FIG. 4 is an end view of a section of the part of the cover rotating together with the grinding disk;
FIG. 5 is a longitudinal section of a grinding machine having a saucer-shaped grinding disk and provided with a third embodiment of the exhaust system.
I designates the grinding machine which in the embodiment shown in FIGS. 1 and 2 is provided with a cup-shaped rotary grinding material 2. The abrasive grit exhaust system comprises a cover which is divided into a part 3 rotating together with the cup-shaped grinding material 2 and a part 4 fixedly connected with the grinding machine 1. The part 3 of said cover is fastened to the member 5 driving the cup-shaped grinding material 2, while the part 4 of the cover is fastened to the neck 6 of the grinding machine 1. An exhaust conduit 7 extends from the stationary cover part 4 and is connected to a grit separator and a suction unit.
The parts 3 and 4 of the cover are tightly interconnected by a labyrinth-type or like seal 8. One member of the seal 8 is disposed on the part 3 of the cover while the other member of the seal 8 is disposed on the part 4 of the cover. Inside the seal 8 the part 3 of the cover is formed with holes 9 for the air escaping from said cover part 3.
The part 3 of the cover rotating together with the cup-shaped grinding material 2 is so adapted to the configuration thereof that a gap 10 is formed between the cover parts 2 and 3, through which gap the forming abrasive grit is exhausted. As will appear from FIG. I the cover part 3 is meant to be worn down together with the cup-shaped grinding material 2. The gap 10 is conformed accordingly; as a rule it is of substantially constant width.
In the embodiment shown in FIGS. 3 and 4 the annular grinding disk 11 is provided on both sides with cover portions 12 and 13 which are adapted to rotate to-.
gether with the grinding disk 11. For this reason they are retained by means of the driving members 14 and 15 and the nut 16. The cover portions 12 and 13 are connected via labyrinth-type seals with the stationary cover portions 17 and 18, the latter of said stationary cover portions being fastened to the neck 19 of the grinding machine. The cover portions 17 and 18 are connected with the common conduit 20 which leads to a grit separator and a suction unit.
The cover portions 12 and 13 are formed by circular plates or like means which are spaced from the sides of the grinding disk 11 so that gaps 21 and 22 are formed between said sides and the plates 12 and 13. The width of the gaps 21 and 22 is determined by spacers 23 and 24 which could directly engage the two sides of the grinding disk 11. In the embodiment illustrated, however, the spacers engage plates 25 and 26 which bear against the sides of the grinding disk. Preferably, the spacers 23 and 24, respectively, are integral with the plates 12, 25 and I3, 26, respectively.
The grinding disk 11 need not be provided with cover portions on both sides. In certain cases it suffices to have one of said cover portions 12 and 13. In the embodiment shown in FIG. 5, the saucer-shaped grinding disk 31 which might also be an ordinary grinding wheel, is provided on one side only with a substantially circular plate 32 which is kept spaced a predetermined distance from said side by spacers 34 to provide the gap 33 necessary for exhausting the abrasive grit. The stationary cover portion 35 is secured to the neck 37 of the grinding machine 36, and connected through the labyrinth-type seal 38 with the rotary cover portion 32 and through the conduit 39 with the grit separator and the suction unit.
I claim:
I. In a grinding apparatus having a rotary grinding wheel and exhaust means for aspirating dust produced by grinding, the improvement which comprises a housing on the apparatus defining an exhaust passage of said exhaust means, and an abradable cover supported for rotation relative to said housing and in unison with the grinding wheel, said abradable cover and a working surface of the grinding wheel being disposed for concurrent abrasrive contact with a workpiece to be ground, said abradable cover being disposed to define with the grinding wheel a gap in flow communication said abradable cover includes a pair of circular plates each disposed in spaced-apart relation to a corresponding end face of the grinding wheel to define therewith respective gaps in flow communication with said exhaust passage.
5. The improvement according to claim 1 wherein said abradable cover has at least one aperture establishing flow communication between said gap and exhaust passage.
Claims (5)
1. In a grinding apparatus having a rotary grinding wheel and exhaust means for aspirating dust produced by grinding, the improvement which comprises a housing on the apparatus defining an exhaust passage of said exhaust means, and an abradable cover supported for rotation relative to said housing and in unison with the grinding wheel, said abradable cover and a working surface of the grinding wheel being disposed for concurrent abrasrive contact with a workpiece to be ground, said abradable cover being dispOsed to define with the grinding wheel a gap in flow communication with said exhaust passage for aspirating through said gap and passage dust produced from grinding.
2. The improvement according to claim 1 wherein said abradable cover is in the form of a cup laterally surrounding the grinding wheel and open at an end face thereof.
3. The improvement according to claim 1 wherein said abradable cover includes at least one circular plate disposed in spaced-apart relation to an end face of the grinding wheel.
4. The improvement according to claim 1 wherein said abradable cover includes a pair of circular plates each disposed in spaced-apart relation to a corresponding end face of the grinding wheel to define therewith respective gaps in flow communication with said exhaust passage.
5. The improvement according to claim 1 wherein said abradable cover has at least one aperture establishing flow communication between said gap and exhaust passage.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE7204833A SE370653B (en) | 1972-04-14 | 1972-04-14 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| US3862521A true US3862521A (en) | 1975-01-28 |
Family
ID=20265081
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| US350640A Expired - Lifetime US3862521A (en) | 1972-04-14 | 1973-04-12 | Abrasive grit exhaust system in grinding machines |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US3862521A (en) |
| FR (1) | FR2180399A5 (en) |
| SE (1) | SE370653B (en) |
Cited By (42)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5050183U (en) * | 1973-09-01 | 1975-05-16 | ||
| EP0005967A1 (en) * | 1978-05-30 | 1979-12-12 | George King Greenough | Improvements in or relating to radial grinding tools with means to remove grinding dust |
| WO1984001320A1 (en) * | 1982-09-29 | 1984-04-12 | Larry E Olson | Routing apparatus with dust extraction system |
| US4462381A (en) * | 1981-05-01 | 1984-07-31 | Makita Electric Works, Ltd. | Power cutting tool |
| US4531329A (en) * | 1983-10-03 | 1985-07-30 | Dynabrade, Inc. | Lip seal shroud |
| US4616449A (en) * | 1984-08-31 | 1986-10-14 | Miksa Marton | Suction housing for vacuum sanding devices |
| US4621462A (en) * | 1985-09-06 | 1986-11-11 | The Boeing Company | Dust collection apparatus |
| US4932163A (en) * | 1989-08-29 | 1990-06-12 | Chilton Douglas L | Dust control system for an abrasive grinder |
| WO1991017865A1 (en) * | 1990-05-16 | 1991-11-28 | John Paul Buser | Dust collector and shield for rotary grinder |
| US5311914A (en) * | 1993-04-14 | 1994-05-17 | Ritter Manufacturing, Inc. | Attachment for a portable router |
| US5370165A (en) * | 1993-04-14 | 1994-12-06 | Ritter Manufacturing, Inc. | Attachment for a portable router |
| US5503203A (en) * | 1993-04-14 | 1996-04-02 | Ritter Manufacturing, Inc. | Attachment for a portable router |
| US5791977A (en) * | 1993-01-22 | 1998-08-11 | Porter-Cable Corporation | Sander |
| US5941765A (en) * | 1996-11-19 | 1999-08-24 | Porter Cable Corporation | Sander |
| US6004192A (en) * | 1996-10-01 | 1999-12-21 | Z. Bavelloni S.P.A. | Unit for polishing bevels on the edges of glass plates, particularly on numeric-control machines |
| US6059644A (en) * | 1998-11-18 | 2000-05-09 | 3M Innovative Properties Company | Back-up pad for abrasive articles and method of making |
| US6132300A (en) * | 1994-07-26 | 2000-10-17 | Black & Decker Inc. | Dual function oscillating tool |
| EP1142670A1 (en) * | 2000-04-07 | 2001-10-10 | Guido Valentini | Power-driven tool for machining surfaces |
| US20040082285A1 (en) * | 2002-01-08 | 2004-04-29 | Daniel Bohler | Device for the treatment/working of surfaces |
| US20080081546A1 (en) * | 2006-09-29 | 2008-04-03 | 3M Innovative Properties Company | Dust vacuuming abrasive tool |
| WO2008069748A1 (en) * | 2006-12-06 | 2008-06-12 | Scanmaskin Sverige Ab | Device for driving a grinding machine |
| US20090181605A1 (en) * | 2008-01-15 | 2009-07-16 | Michael Loveless | Dust shroud with adjustable mounting mechanism |
| US20090181606A1 (en) * | 2008-01-15 | 2009-07-16 | Michael Loveless | Vacuum shroud for use with drilling tools |
| US20090181604A1 (en) * | 2008-01-15 | 2009-07-16 | Michael Loveless | Dust shroud for rotary tools |
| US20090183377A1 (en) * | 2008-01-21 | 2009-07-23 | Michael Loveless | Dust shroud for circular saws |
| US20090183800A1 (en) * | 2008-01-22 | 2009-07-23 | Michael Loveless | Dust shroud for gas powered circular saws |
| US20090186559A1 (en) * | 2008-01-21 | 2009-07-23 | Michael Loveless | Dust shroud with access hatch retention mechanism |
| US20090300876A1 (en) * | 2006-11-13 | 2009-12-10 | Michael Loveless | Vacuum assisted scraper |
| US20100285729A1 (en) * | 2009-05-08 | 2010-11-11 | Michael Loveless | Angle grinder dust shroud with unitary adjustable mounting collar |
| US20110021121A1 (en) * | 2009-07-21 | 2011-01-27 | Spencer Loveless | Angle grinder dust shroud with slideable access hatch |
| US20110192262A1 (en) * | 2009-08-18 | 2011-08-11 | Spencer Loveless | Cutoff saw and stand with integrated dust filtration system |
| US8381711B2 (en) | 2009-06-16 | 2013-02-26 | Dustless Depot, Llc | Universal dust collection shroud for high speed gas powered saws |
| US20130137348A1 (en) * | 2011-11-28 | 2013-05-30 | Bach Pangho Chen | Dust collection hood for grinding machine tools |
| CN103862351A (en) * | 2012-12-13 | 2014-06-18 | 苏州宝时得电动工具有限公司 | Eccentric rotary swing type tool |
| US9038275B2 (en) | 2011-09-07 | 2015-05-26 | Dustless Depot, Llc | Reciprocating saw dust shroud |
| US9358665B2 (en) | 2011-11-30 | 2016-06-07 | Hyde Tools, Inc. | Hand sander that is selectively attachable to a dust-vacuum system |
| USD816453S1 (en) | 2016-09-15 | 2018-05-01 | Dustless Depot, Llc | Circular saw dust shroud |
| US10293421B2 (en) | 2016-09-15 | 2019-05-21 | Dustless Depot, Llc | Circular saw dust collection shroud |
| USD908149S1 (en) | 2018-10-23 | 2021-01-19 | Dustless Depot Llc | Angle grinder dust shroud with variable position slots for mounting brackets |
| US20210229239A1 (en) * | 2020-01-23 | 2021-07-29 | Guido Valentini | Protective shroud for a hand-guided power tool and hand-guided power tool with such a protective shroud |
| US11123839B2 (en) | 2018-10-23 | 2021-09-21 | Dustless Depot Llc | Grinder dust shroud with input shaft gasket and adjustable mounting mechanism |
| US11273505B2 (en) | 2019-03-27 | 2022-03-15 | Dustless Depot, Llc | Circular saw dust collection shroud |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2895266A (en) * | 1957-05-10 | 1959-07-21 | Statler Lowell | Grinding head |
| US3594958A (en) * | 1969-02-03 | 1971-07-27 | Clarkson Ind Inc | Dust collector for grinding tool |
-
1972
- 1972-04-14 SE SE7204833A patent/SE370653B/xx unknown
-
1973
- 1973-04-12 US US350640A patent/US3862521A/en not_active Expired - Lifetime
- 1973-04-13 FR FR7313398A patent/FR2180399A5/fr not_active Expired
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2895266A (en) * | 1957-05-10 | 1959-07-21 | Statler Lowell | Grinding head |
| US3594958A (en) * | 1969-02-03 | 1971-07-27 | Clarkson Ind Inc | Dust collector for grinding tool |
Cited By (57)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5050183U (en) * | 1973-09-01 | 1975-05-16 | ||
| EP0005967A1 (en) * | 1978-05-30 | 1979-12-12 | George King Greenough | Improvements in or relating to radial grinding tools with means to remove grinding dust |
| US4462381A (en) * | 1981-05-01 | 1984-07-31 | Makita Electric Works, Ltd. | Power cutting tool |
| WO1984001320A1 (en) * | 1982-09-29 | 1984-04-12 | Larry E Olson | Routing apparatus with dust extraction system |
| US4531329A (en) * | 1983-10-03 | 1985-07-30 | Dynabrade, Inc. | Lip seal shroud |
| US4616449A (en) * | 1984-08-31 | 1986-10-14 | Miksa Marton | Suction housing for vacuum sanding devices |
| US4621462A (en) * | 1985-09-06 | 1986-11-11 | The Boeing Company | Dust collection apparatus |
| US4932163A (en) * | 1989-08-29 | 1990-06-12 | Chilton Douglas L | Dust control system for an abrasive grinder |
| WO1991017865A1 (en) * | 1990-05-16 | 1991-11-28 | John Paul Buser | Dust collector and shield for rotary grinder |
| US5125190A (en) * | 1990-05-16 | 1992-06-30 | Buser John P | Dust collector and shield for rotary grinder |
| US5934985A (en) * | 1993-01-22 | 1999-08-10 | Porter Cable Corporation | Palm grip random orbit sander with lower housing and dust collector coupled to lower housing |
| US6224471B1 (en) | 1993-01-22 | 2001-05-01 | Porter-Cable Corporation | Dust Collector |
| US5791977A (en) * | 1993-01-22 | 1998-08-11 | Porter-Cable Corporation | Sander |
| US6506107B2 (en) | 1993-01-22 | 2003-01-14 | Porter-Cable Corporation | Sander |
| US5503203A (en) * | 1993-04-14 | 1996-04-02 | Ritter Manufacturing, Inc. | Attachment for a portable router |
| US5311914A (en) * | 1993-04-14 | 1994-05-17 | Ritter Manufacturing, Inc. | Attachment for a portable router |
| US5370165A (en) * | 1993-04-14 | 1994-12-06 | Ritter Manufacturing, Inc. | Attachment for a portable router |
| US6132300A (en) * | 1994-07-26 | 2000-10-17 | Black & Decker Inc. | Dual function oscillating tool |
| US6004192A (en) * | 1996-10-01 | 1999-12-21 | Z. Bavelloni S.P.A. | Unit for polishing bevels on the edges of glass plates, particularly on numeric-control machines |
| US5941765A (en) * | 1996-11-19 | 1999-08-24 | Porter Cable Corporation | Sander |
| US6361424B1 (en) | 1998-11-18 | 2002-03-26 | 3M Innovative Properties Company | Back-up pad for abrasive articles and method of making |
| US6059644A (en) * | 1998-11-18 | 2000-05-09 | 3M Innovative Properties Company | Back-up pad for abrasive articles and method of making |
| EP1142670A1 (en) * | 2000-04-07 | 2001-10-10 | Guido Valentini | Power-driven tool for machining surfaces |
| US20040082285A1 (en) * | 2002-01-08 | 2004-04-29 | Daniel Bohler | Device for the treatment/working of surfaces |
| US7022004B2 (en) * | 2002-01-08 | 2006-04-04 | Boehler Daniel | Device for the treatment/working of surfaces |
| US20080081546A1 (en) * | 2006-09-29 | 2008-04-03 | 3M Innovative Properties Company | Dust vacuuming abrasive tool |
| US20090300876A1 (en) * | 2006-11-13 | 2009-12-10 | Michael Loveless | Vacuum assisted scraper |
| WO2008069748A1 (en) * | 2006-12-06 | 2008-06-12 | Scanmaskin Sverige Ab | Device for driving a grinding machine |
| US20090181606A1 (en) * | 2008-01-15 | 2009-07-16 | Michael Loveless | Vacuum shroud for use with drilling tools |
| US20090181605A1 (en) * | 2008-01-15 | 2009-07-16 | Michael Loveless | Dust shroud with adjustable mounting mechanism |
| US8177606B2 (en) | 2008-01-15 | 2012-05-15 | Dustless Depot, Llc | Dust shroud for rotary tools |
| US8137165B2 (en) | 2008-01-15 | 2012-03-20 | Dust Collection Products, Llc | Dust shroud with adjustable mounting mechanism |
| US20090181604A1 (en) * | 2008-01-15 | 2009-07-16 | Michael Loveless | Dust shroud for rotary tools |
| US8133094B2 (en) | 2008-01-21 | 2012-03-13 | Dust Collection Products, Llc | Dust shroud with access hatch retention mechanism |
| US20090186559A1 (en) * | 2008-01-21 | 2009-07-23 | Michael Loveless | Dust shroud with access hatch retention mechanism |
| US20090183377A1 (en) * | 2008-01-21 | 2009-07-23 | Michael Loveless | Dust shroud for circular saws |
| US8011398B2 (en) | 2008-01-22 | 2011-09-06 | Dustless Depot, Llc | Dust shroud for gas powered circular saws |
| US20090183800A1 (en) * | 2008-01-22 | 2009-07-23 | Michael Loveless | Dust shroud for gas powered circular saws |
| US20100285729A1 (en) * | 2009-05-08 | 2010-11-11 | Michael Loveless | Angle grinder dust shroud with unitary adjustable mounting collar |
| US8702478B2 (en) | 2009-05-08 | 2014-04-22 | Michael Loveless | Angle grinder dust shroud with unitary adjustable mounting collar |
| US8381711B2 (en) | 2009-06-16 | 2013-02-26 | Dustless Depot, Llc | Universal dust collection shroud for high speed gas powered saws |
| US20110021121A1 (en) * | 2009-07-21 | 2011-01-27 | Spencer Loveless | Angle grinder dust shroud with slideable access hatch |
| US8523637B2 (en) | 2009-07-21 | 2013-09-03 | Dustless Depot, Llc | Angle grinder dust shroud with slideable access hatch |
| US20110192262A1 (en) * | 2009-08-18 | 2011-08-11 | Spencer Loveless | Cutoff saw and stand with integrated dust filtration system |
| US8561512B2 (en) | 2009-08-18 | 2013-10-22 | Dustless Depot Llc | Cutoff saw and stand with integrated dust filtration system |
| US9038275B2 (en) | 2011-09-07 | 2015-05-26 | Dustless Depot, Llc | Reciprocating saw dust shroud |
| US20130137348A1 (en) * | 2011-11-28 | 2013-05-30 | Bach Pangho Chen | Dust collection hood for grinding machine tools |
| US8801506B2 (en) * | 2011-11-28 | 2014-08-12 | X'pole Precision Tools Inc. | Dust collection hood for grinding machine tools |
| US9358665B2 (en) | 2011-11-30 | 2016-06-07 | Hyde Tools, Inc. | Hand sander that is selectively attachable to a dust-vacuum system |
| CN103862351B (en) * | 2012-12-13 | 2017-06-16 | 苏州宝时得电动工具有限公司 | Eccentric rotary swings class instrument |
| CN103862351A (en) * | 2012-12-13 | 2014-06-18 | 苏州宝时得电动工具有限公司 | Eccentric rotary swing type tool |
| USD816453S1 (en) | 2016-09-15 | 2018-05-01 | Dustless Depot, Llc | Circular saw dust shroud |
| US10293421B2 (en) | 2016-09-15 | 2019-05-21 | Dustless Depot, Llc | Circular saw dust collection shroud |
| USD908149S1 (en) | 2018-10-23 | 2021-01-19 | Dustless Depot Llc | Angle grinder dust shroud with variable position slots for mounting brackets |
| US11123839B2 (en) | 2018-10-23 | 2021-09-21 | Dustless Depot Llc | Grinder dust shroud with input shaft gasket and adjustable mounting mechanism |
| US11273505B2 (en) | 2019-03-27 | 2022-03-15 | Dustless Depot, Llc | Circular saw dust collection shroud |
| US20210229239A1 (en) * | 2020-01-23 | 2021-07-29 | Guido Valentini | Protective shroud for a hand-guided power tool and hand-guided power tool with such a protective shroud |
Also Published As
| Publication number | Publication date |
|---|---|
| DE2318426B2 (en) | 1976-11-04 |
| FR2180399A5 (en) | 1973-11-23 |
| SE370653B (en) | 1974-10-28 |
| DE2318426A1 (en) | 1973-10-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US3862521A (en) | Abrasive grit exhaust system in grinding machines | |
| US4525955A (en) | Abrasive belt cleaning system | |
| GB1466545A (en) | Abrasive disc | |
| US5595530A (en) | Reciprocating sander | |
| US2764852A (en) | Portable power operated sanding machine | |
| US3542372A (en) | Process for sealing about the rotary shaft of a tool | |
| US3974598A (en) | Backing disc with means to expel abraded particles | |
| US2711061A (en) | Dust collector | |
| US5709597A (en) | Pivotal vacuum shield for an abrading device | |
| JPH06226709A (en) | Dust collecting device of electric tool | |
| US20040154168A1 (en) | Dust and debris shield for powered hand tool | |
| US20130340585A1 (en) | Seal for a Sawing Machine for Separating Electronic Components and Sawing Machine Provided with Such a Seal | |
| GB1408522A (en) | Abrasive grit exhaust systems in grinding machines | |
| GB1462156A (en) | ||
| US2956377A (en) | Grinding machine and method | |
| US2791067A (en) | Grinding apparatus | |
| JPS61260976A (en) | Dressing device for grind stone | |
| CN210189446U (en) | Dustproof construction and grinder | |
| SU931439A1 (en) | Dust trapping casing | |
| KR200228536Y1 (en) | Mounting structure for a dust collecting duct of a buffing equipment | |
| CN218613420U (en) | Chassis of pneumatic grinder | |
| US3470655A (en) | Bearing seal construction | |
| JPH035416Y2 (en) | ||
| GB1183947A (en) | Power Tool for Surface Finishing Workpieces | |
| CN213858713U (en) | Granule grinding device of extrusion granulation system |