[go: up one dir, main page]

US3862521A - Abrasive grit exhaust system in grinding machines - Google Patents

Abrasive grit exhaust system in grinding machines Download PDF

Info

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
Application number
US350640A
Inventor
Lars Goran Torsten Isaksson
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
TEDAK AB
Original Assignee
TEDA LAB I ESKILSTUNA AB
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by TEDA LAB I ESKILSTUNA AB filed Critical TEDA LAB I ESKILSTUNA AB
Application granted granted Critical
Publication of US3862521A publication Critical patent/US3862521A/en
Assigned to TEDAK AKTIEBOLAG reassignment TEDAK AKTIEBOLAG CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE 5/31/77 Assignors: TEDA-LAB I ESKILSTUNA AKTIEBOLAG
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Grinding-Machine Dressing And Accessory Apparatuses (AREA)
  • Sealing Using Fluids, Sealing Without Contact, And Removal Of Oil (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

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.
US350640A 1972-04-14 1973-04-12 Abrasive grit exhaust system in grinding machines Expired - Lifetime US3862521A (en)

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)

* Cited by examiner, † Cited by third party
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
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
US20090183377A1 (en) * 2008-01-21 2009-07-23 Michael Loveless Dust shroud for circular saws
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)

* Cited by examiner, † Cited by third party
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

Patent Citations (2)

* Cited by examiner, † Cited by third party
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)

* Cited by examiner, † Cited by third party
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
US20090183377A1 (en) * 2008-01-21 2009-07-23 Michael Loveless Dust shroud for circular saws
US20090186559A1 (en) * 2008-01-21 2009-07-23 Michael Loveless Dust shroud with access hatch retention mechanism
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
FR2180399A5 (en) 1973-11-23
SE370653B (en) 1974-10-28
DE2318426B2 (en) 1976-11-04
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
US5595530A (en) Reciprocating sander
CN100526013C (en) Hand held forced grinding device
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
US2654190A (en) Portable power-operated abrading machine
JP3451210B2 (en) Seal structure of pneumatic rotating device
US20040154168A1 (en) Dust and debris shield for powered hand tool
JPH06226709A (en) Dust collecting device of electric tool
US20130340585A1 (en) Seal for a Sawing Machine for Separating Electronic Components and Sawing Machine Provided with Such a Seal
CN210189446U (en) Dustproof construction and grinder
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
RU207169U1 (en) Anti-dusting device of the abrasive machine
US2805525A (en) Grinding machine utilizing abrasive discs
GB1183947A (en) Power Tool for Surface Finishing Workpieces
SU931439A1 (en) Dust trapping casing
US3972149A (en) End blaster for pipes