US20060286910A1 - Guard for an electric machine tool, electric machine tool, and system comprising a guard and electric machine tool - Google Patents
Guard for an electric machine tool, electric machine tool, and system comprising a guard and electric machine tool Download PDFInfo
- Publication number
- US20060286910A1 US20060286910A1 US10/552,225 US55222505A US2006286910A1 US 20060286910 A1 US20060286910 A1 US 20060286910A1 US 55222505 A US55222505 A US 55222505A US 2006286910 A1 US2006286910 A1 US 2006286910A1
- Authority
- US
- United States
- Prior art keywords
- guard
- rotation
- recited
- blocking
- insertion tool
- 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.)
- Abandoned
Links
- 230000000903 blocking effect Effects 0.000 claims abstract description 40
- 230000037431 insertion Effects 0.000 claims abstract description 40
- 238000003780 insertion Methods 0.000 claims abstract description 40
- 230000001960 triggered effect Effects 0.000 claims description 2
- 239000012634 fragment Substances 0.000 description 8
- 230000006378 damage Effects 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000009993 protective function Effects 0.000 description 2
- 208000027418 Wounds and injury Diseases 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 208000014674 injury Diseases 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
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
- B24B55/04—Protective covers for the grinding wheel
- B24B55/05—Protective covers for the grinding wheel specially designed for portable grinding machines
- B24B55/052—Protective covers for the grinding wheel specially designed for portable grinding machines with rotating tools
Definitions
- the present invention is directed to a guard for a power tool, a power tool, and a system composed of guard and power tool according to the descriptions of the species in the independent claims.
- the present invention is directed to a guard for a power tool with a rotatably driven insertion tool, with which at least portions of the insertion tool can be covered.
- At least one blocking means is provided that at least prevents the insertion tool from turning around an axis of rotation.
- protection against contact with the insertion tool is improved and a protective function against a shattering of the insertion tool is ensured.
- fragments slung off of the shattered insertion tool are prevented from rotating the guard on the drive shaft so far that the fragments pose a risk to an operator. If damage occurs, the blocking of the guard rotation is independent of a tightening torque used to attach the guard.
- the blocking means is preferably formed by a stop cam in a flange designed for fastening that extends substantially parallel to the axis of rotation.
- the guard is installed with the flange on the power tool, thereby enabling a space-saving and easy-to-handle arrangement of the rotation-prevention means.
- the stop cam can point inward. An arrangement with an outwardly-oriented stop cam is also possible.
- the blocking means is formed by a stop cam in a clamp connected with the flange, a high degree of safety can be obtained using means that are easy to manufacture.
- the rotation-prevention means is not dependent on a clamping force given by a tightening torque of an attachment screw used to attach the clamp to a collar. The rotation-prevention means is effective even if the attachment screw was accidentally under-tightened. If the stop cam hits a stop, the guard is held securely in this position.
- stop cam in the installed state, points toward a collar, a corresponding stop can be provided on the collar of the power tool.
- the entire rotation-prevention means is located inside the guard.
- the blocking means is formed by an outwardly-projecting blocking lug on the guard, it can be machined—economically and easily—directly out of the sheet metal of the guard.
- the blocking lug can also be welded on, adhesively bonded or screwed into place.
- the blocking lug can also be installed as a retrofit.
- the blocking lug can project outward. As an alternative, it can also point inward, in a suitable location.
- the rotation-prevention means can be positioned in a space-saving manner.
- the blocking lug can also be located on a surface extending substantially perpendicular to the axis of rotation, adjacent to an opening for a drive shaft of the insertion tool to be covered by the guard. As a result, the blocking lug advantageously does not extend into the operator's working area.
- the present invention also relates to a power tool with an electric motor located in a housing, the electric motor rotatably driving the insertion tool.
- a rotation-prevention means is provided that at least prevents the insertion tool from being released in the direction of an operator.
- the guard can be limited, at the least, from rotating around an axis of rotation of the insertion tool. As a result, protection against contact with the insertion tool is improved and a protective function against a shattering of the insertion tool is ensured. As a result, fragments slung off of the shattered insertion tool are prevented from rotating the guard on the drive shaft so far that the fragments pose a risk to an operator.
- rotation-prevention means includes a stop means that corresponds with the blocking means, rotation of the guard can be limited to a narrow angular range, or it can be prevented entirely.
- a collar includes a guide groove with a limiting groove located at an angle thereto, a clamp with a stop cam pressed through on its inside can be inserted.
- the guard can only be rotated within the limiting groove; this limits the angular range of the guard.
- the guard can be fixed in any position in the limiting groove.
- a blocking lug and/or a stop cam can hit it, and the guard can be prevented from rotating in an undesired manner.
- the present invention also relates to a system composed of guard and power tool.
- a rotation-prevention means is provided with a blocking means on the guard side and with a corresponding stop means on the power tool side.
- the blocking means can be an integral part of the guard, e.g., a blocking lug or a cam, or it can be provided on a fastening device with which the guard is connected with the power tool.
- the guard is reliably prevented from rotating past the stop.
- the rotation-prevention means can be triggered by the insertion tool acting on the guard, the operator's safety can be ensured in case of maloperation.
- the guard can be rotated, at the most, within an angular range in which safety is still ensured. Installation of the guard in a position that is common for normal operation of the power tool is not prevented.
- the power tool is designed as an angle grinder, the grinding disc of which is covered by a guard, at least in some areas. If the grinding disc shatters, the guard can no longer be driven by the fragments in the original direction of rotation so far that the operator could be struck by fragments.
- the rotation-prevention means is independent of a tightening torque used to attach the guard to a collar.
- FIG. 1 Shows a preferred angle grinder
- FIG. 2 Shows a schematic depiction of a side view according to a first exemplary embodiment
- FIG. 3 Shows a depiction of a maximum angular range of rotation of the guard
- FIG. 4 Shows a schematic view of a clamp for attaching the guard
- FIG. 5 Shows a top view of a guard with clamp
- FIG. 6 Shows a rotation-prevention means according to a second exemplary embodiment.
- FIG. 1 A power tool designed as a preferred angle grinder is shown in FIG. 1 .
- An electric motor (not shown) is located in a housing 10 , the electric motor rotatably driving an insertion tool 14 , which is a grinding disc in this case.
- an output shaft of the electric motor is usually positioned perpendicularly to a drive shaft of the insertion tool.
- the angle grinder can be held and guided using a handle 12 that projects outwardly at an angle.
- a guard 16 covers insertion tool 14 to the extent that protection against contact by an operator is ensured.
- Guard 16 is designed as a semicircle with a flange on the periphery, the flange extending downward at the periphery and covering half of the surface and the edge of grinding disc 14 .
- Guard 16 includes, e.g., a flange 30 projecting upwardly from the center of its imaginary circular area and extending substantially parallel to an axis of rotation 18 , with a clamp 26 attached thereto, and is fixed to a collar 24 by way of said clamp 26 ( FIGS. 2-5 ).
- a rotation-prevention means 20 is provided according to the present invention that at least limits guard 16 from rotating around an axis of rotation of insertion tool 14 and/or collar 24 .
- FIGS. 2 through 5 show a first preferred exemplary embodiment of a rotation-prevention means 20 .
- a blocking means in the form of a stop cam 32 is provided, on the guard side, on a collar 24 of a drive shaft 22 , the blocking means being formed in a clamp 26 for attaching a guard 16 to collar 24 , and which is pressed through toward the inside of clamp 26 ( FIG. 4 ).
- An insertion groove 36 with a limiting groove 34 extending substantially perpendicular thereto is provided in collar 24 , the limiting groove forming a stop means that corresponds with stop cam 32 .
- limiting groove 34 limits a possible rotation around an axis of rotation 18 to an angular range a ( FIG. 3 ). The rotation is blocked independently of a torque used to tighten an attachment screw 28 used to fix clamp 26 around collar 24 , the rotation being blocked by one end or the other end of limiting groove 34 .
- Clamp 26 is shown in greater detail in FIG. 4 .
- Clamp 26 surrounds a flange 30 that projects outward from guard 16 and fixedly clamps flange 30 of guard 16 to collar 24 of drive shaft 22 .
- stop cam 32 is guided via insertion groove 36 into limiting groove 34 .
- Attachment screw 28 is screwed into a screw receptacle 38 .
- limiting groove 34 extends away from insertion groove 36 in the direction of rotation of insertion tool 14 .
- Guard 16 can only be rotated, at a maximum, in angular range ⁇ , across which limiting groove 34 extends ( FIG. 3 ).
- FIG. 5 shows a top view of the arrangement.
- a suction pipe 44 can also be integrated in guard 16 , suction pipe enabling the extraction of dust produced while working with insertion tool 14 .
- Stop cam 32 is pressed through on the inside of clamp 26 with which guard 16 is fixed to collar 24 and extends into limiting groove 34 of collar 24 .
- FIG. 6 A further exemplary embodiment of rotation-prevention means 20 is depicted in FIG. 6 .
- a blocking lug 40 is formed on guard 16 that is formed out of the sheet metal of guard 16 by being partially punched out and bent.
- blocking lug 40 can also be welded on, adhesively bonded, or screwed in place.
- Blocking lug 40 extends outward out of the surface of guard 16 such that it can come in contact with a stop 42 provided on housing 10 .
- Stop 42 can be formed directly in housing 10 , or it can be welded on, adhesively bonded, or screwed in place. Stop 42 or blocking lug 40 can also be installed as a retrofit.
- a blocking lug 40 ′ can be created out of a wall of guard 16 oriented perpendicularly to axis of rotation 18 by being partially punched out and bent.
- Blocking lug 40 hits stop 42 if guard 16 rotates on collar 24 in the direction of rotation.
- Guard 16 can be mounted on collar 24 using a common clamp 26 .
- Clamp 26 can also be equipped with a rotation-prevention means 20 according to the present invention, of the type described with reference to the preceding figures.
- guard 16 can be installed such that blocking means 32 , 40 are both positioned as closely adjacent to stop means 34 , 42 as possible. As a result, guard 16 can be prevented from rotating on collar 24 , the rotation being induced when insertion tool 14 shatters.
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Grinding-Machine Dressing And Accessory Apparatuses (AREA)
- Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
Abstract
The present invention is directed to a guard for a power tool with a rotatably driven insertion tool (14), with which at least portions of the insertion tool (14) can be covered.
According to the present invention, at least one blocking means (32, 40) is provided that at least prevents the insertion tool (14) from turning around an axis of rotation (18).
Description
- The present invention is directed to a guard for a power tool, a power tool, and a system composed of guard and power tool according to the descriptions of the species in the independent claims.
- It is known to provide guards for power tools with rotatably driven insertion tools—angle grinders in particular—to protect an operator from injury that could occur if the insertion tool shatters and fragments are slung outward.
- The present invention is directed to a guard for a power tool with a rotatably driven insertion tool, with which at least portions of the insertion tool can be covered.
- According to the present invention, at least one blocking means is provided that at least prevents the insertion tool from turning around an axis of rotation. As a result, protection against contact with the insertion tool is improved and a protective function against a shattering of the insertion tool is ensured. As a result, fragments slung off of the shattered insertion tool are prevented from rotating the guard on the drive shaft so far that the fragments pose a risk to an operator. If damage occurs, the blocking of the guard rotation is independent of a tightening torque used to attach the guard.
- The blocking means is preferably formed by a stop cam in a flange designed for fastening that extends substantially parallel to the axis of rotation. The guard is installed with the flange on the power tool, thereby enabling a space-saving and easy-to-handle arrangement of the rotation-prevention means. The stop cam can point inward. An arrangement with an outwardly-oriented stop cam is also possible.
- One skilled in the art will select an arrangement that is suitable for the power tool being used.
- If the blocking means is formed by a stop cam in a clamp connected with the flange, a high degree of safety can be obtained using means that are easy to manufacture. The rotation-prevention means is not dependent on a clamping force given by a tightening torque of an attachment screw used to attach the clamp to a collar. The rotation-prevention means is effective even if the attachment screw was accidentally under-tightened. If the stop cam hits a stop, the guard is held securely in this position.
- If the stop cam, in the installed state, points toward a collar, a corresponding stop can be provided on the collar of the power tool. The entire rotation-prevention means is located inside the guard.
- If the blocking means is formed by an outwardly-projecting blocking lug on the guard, it can be machined—economically and easily—directly out of the sheet metal of the guard. As an option, the blocking lug can also be welded on, adhesively bonded or screwed into place. The blocking lug can also be installed as a retrofit. Preferably, the blocking lug can project outward. As an alternative, it can also point inward, in a suitable location.
- If the blocking lug is located on the flange, the rotation-prevention means can be positioned in a space-saving manner.
- The blocking lug can also be located on a surface extending substantially perpendicular to the axis of rotation, adjacent to an opening for a drive shaft of the insertion tool to be covered by the guard. As a result, the blocking lug advantageously does not extend into the operator's working area.
- The present invention also relates to a power tool with an electric motor located in a housing, the electric motor rotatably driving the insertion tool.
- According to the present invention, a rotation-prevention means is provided that at least prevents the insertion tool from being released in the direction of an operator.
- The guard can be limited, at the least, from rotating around an axis of rotation of the insertion tool. As a result, protection against contact with the insertion tool is improved and a protective function against a shattering of the insertion tool is ensured. As a result, fragments slung off of the shattered insertion tool are prevented from rotating the guard on the drive shaft so far that the fragments pose a risk to an operator.
- If the rotation-prevention means includes a stop means that corresponds with the blocking means, rotation of the guard can be limited to a narrow angular range, or it can be prevented entirely.
- If a collar includes a guide groove with a limiting groove located at an angle thereto, a clamp with a stop cam pressed through on its inside can be inserted. The guard can only be rotated within the limiting groove; this limits the angular range of the guard. The guard can be fixed in any position in the limiting groove.
- If a stop that projects outward at an angle is provided on the housing, a blocking lug and/or a stop cam can hit it, and the guard can be prevented from rotating in an undesired manner.
- The present invention also relates to a system composed of guard and power tool.
- According to the present invention, a rotation-prevention means is provided with a blocking means on the guard side and with a corresponding stop means on the power tool side. The blocking means can be an integral part of the guard, e.g., a blocking lug or a cam, or it can be provided on a fastening device with which the guard is connected with the power tool. The guard is reliably prevented from rotating past the stop. By aligning the blocking means and stop means accordingly, an angular range within which rotation is permitted can be actively specified.
- If the rotation-prevention means can be triggered by the insertion tool acting on the guard, the operator's safety can be ensured in case of maloperation. The guard can be rotated, at the most, within an angular range in which safety is still ensured. Installation of the guard in a position that is common for normal operation of the power tool is not prevented.
- Particularly preferably, the power tool is designed as an angle grinder, the grinding disc of which is covered by a guard, at least in some areas. If the grinding disc shatters, the guard can no longer be driven by the fragments in the original direction of rotation so far that the operator could be struck by fragments. The rotation-prevention means is independent of a tightening torque used to attach the guard to a collar.
- Further advantages result from the description of the drawing, below. Two exemplary embodiments of the present invention are shown in the drawing. The drawing, the description and the claims contain numerous features in combination. One skilled in the art will also advantageously consider the features individually and combine them to form further reasonable combinations.
-
FIG. 1 Shows a preferred angle grinder, -
FIG. 2 Shows a schematic depiction of a side view according to a first exemplary embodiment, -
FIG. 3 Shows a depiction of a maximum angular range of rotation of the guard, -
FIG. 4 Shows a schematic view of a clamp for attaching the guard, -
FIG. 5 Shows a top view of a guard with clamp, -
FIG. 6 Shows a rotation-prevention means according to a second exemplary embodiment. - A power tool designed as a preferred angle grinder is shown in
FIG. 1 . An electric motor (not shown) is located in ahousing 10, the electric motor rotatably driving aninsertion tool 14, which is a grinding disc in this case. With an angle grinder, an output shaft of the electric motor is usually positioned perpendicularly to a drive shaft of the insertion tool. The angle grinder can be held and guided using ahandle 12 that projects outwardly at an angle. Aguard 16 coversinsertion tool 14 to the extent that protection against contact by an operator is ensured.Guard 16 is designed as a semicircle with a flange on the periphery, the flange extending downward at the periphery and covering half of the surface and the edge of grindingdisc 14.Guard 16 includes, e.g., aflange 30 projecting upwardly from the center of its imaginary circular area and extending substantially parallel to an axis ofrotation 18, with aclamp 26 attached thereto, and is fixed to acollar 24 by way of said clamp 26 (FIGS. 2-5 ). - To ensure—if
insertion tool 14 shatters—thatguard 16 is not rotated so far that fragments can strike the operator, a rotation-prevention means 20 is provided according to the present invention that at least limits guard 16 from rotating around an axis of rotation ofinsertion tool 14 and/orcollar 24. -
FIGS. 2 through 5 show a first preferred exemplary embodiment of a rotation-prevention means 20. In the figures, components that are basically identical are all labeled with the same reference numerals. A blocking means in the form of astop cam 32 is provided, on the guard side, on acollar 24 of adrive shaft 22, the blocking means being formed in aclamp 26 for attaching aguard 16 tocollar 24, and which is pressed through toward the inside of clamp 26 (FIG. 4 ). Aninsertion groove 36 with a limitinggroove 34 extending substantially perpendicular thereto is provided incollar 24, the limiting groove forming a stop means that corresponds withstop cam 32. Ifguard 16 is rotated wheninsertion tool 14 shatters, limitinggroove 34 limits a possible rotation around an axis ofrotation 18 to an angular range a (FIG. 3 ). The rotation is blocked independently of a torque used to tighten anattachment screw 28 used to fixclamp 26 aroundcollar 24, the rotation being blocked by one end or the other end of limitinggroove 34. -
Clamp 26 is shown in greater detail inFIG. 4 .Clamp 26 surrounds aflange 30 that projects outward fromguard 16 and fixedly clampsflange 30 ofguard 16 tocollar 24 ofdrive shaft 22. To installguard 16,stop cam 32 is guided viainsertion groove 36 into limitinggroove 34.Attachment screw 28 is screwed into ascrew receptacle 38. By tighteningattachment screw 28,guard 16 can be clamped more or less tightly tocollar 24. Advantageously, limitinggroove 34 extends away frominsertion groove 36 in the direction of rotation ofinsertion tool 14.Guard 16 can only be rotated, at a maximum, in angular range α, across which limitinggroove 34 extends (FIG. 3 ). -
FIG. 5 shows a top view of the arrangement. Asuction pipe 44 can also be integrated inguard 16, suction pipe enabling the extraction of dust produced while working withinsertion tool 14. Stopcam 32 is pressed through on the inside ofclamp 26 with whichguard 16 is fixed tocollar 24 and extends into limitinggroove 34 ofcollar 24. - A further exemplary embodiment of rotation-prevention means 20 is depicted in
FIG. 6 . In that case, a blockinglug 40 is formed onguard 16 that is formed out of the sheet metal ofguard 16 by being partially punched out and bent. As an option, blockinglug 40 can also be welded on, adhesively bonded, or screwed in place. Blockinglug 40 extends outward out of the surface ofguard 16 such that it can come in contact with astop 42 provided onhousing 10.Stop 42 can be formed directly inhousing 10, or it can be welded on, adhesively bonded, or screwed in place. Stop 42 or blockinglug 40 can also be installed as a retrofit. As an alternative to blockinglug 40, a blockinglug 40′ can be created out of a wall ofguard 16 oriented perpendicularly to axis ofrotation 18 by being partially punched out and bent. - Blocking
lug 40 hits stop 42 ifguard 16 rotates oncollar 24 in the direction of rotation.Guard 16 can be mounted oncollar 24 using acommon clamp 26.Clamp 26 can also be equipped with a rotation-prevention means 20 according to the present invention, of the type described with reference to the preceding figures. - Advantageously,
guard 16 can be installed such that blocking means 32, 40 are both positioned as closely adjacent to stop means 34, 42 as possible. As a result,guard 16 can be prevented from rotating oncollar 24, the rotation being induced wheninsertion tool 14 shatters. -
- 10 Housing
- 12 Handle
- 14 Insertion tool
- 16 Guard
- 18 Axis of rotation
- 20 Rotation-prevention means
- 22 Drive shaft
- 24 Collar
- 26 Clamp
- 28 Attachment screw
- 30 Flange
- 32 Stop cam
- 34 Limiting groove
- 36 Insertion groove
- 38 Screwed connection
- 40 Blocking lug
- 42 Stop
- 44 Suction pipe
- α Angle of rotation
Claims (14)
1. A guard for a power tool with a rotatably driven insertion tool (14), with which at least portions of the insertion tool (14) can be covered, wherein
at least one blocking means (32, 40) is provided that at least prevents the insertion tool (14) from turning around an axis of rotation (18).
2. The guard as recited in claim 1 , wherein
the blocking means (32, 40) is formed by stop cam (32) in a flange (30) designed for fastening, flange (30) extending substantially parallel to the axis of rotation (18).
3. The guard as recited in claim 1 , wherein
the blocking means (32, 40) is formed by a stop cam (32) in a clamp (26) connected with the flange (30).
4. The guard as recited in claim 3 , wherein
the stop cam (32), in the installed state, points toward a collar (24).
5. The guard as recited in claim 1 , wherein
the blocking means (32, 40) is formed by a projecting blocking lug (40).
6. The guard as recited in claim 5 , wherein
the blocking lug (40) is located on the flange (30).
7. The guard as recited in claim 5 , wherein
the blocking lug (40) is located on a surface extending substantially perpendicular to the axis of rotation (18), adjacent to an opening for a drive shaft (22).
8. A power tool with an electric motor located in a housing (10), the electric motor rotatably driving an insertion tool (14), wherein
a rotation-prevention means (20) is provided that at least prevents the insertion tool (14) from being released in the direction of an operator.
9. The power tool as recited in claim 8 , wherein
the rotation-prevention means (20) includes a stop means (34, 42) for the blocking means (32, 30) that corresponds with a blocking means (32, 40) for a guard (16).
10. The power tool as recited in claim 8 , wherein
a collar (24) includes an insertion groove (36) with a limiting groove (34) located at an angle thereto.
11. The power tool as recited in claim 8 , wherein
a stop (42) that projects outward at an angle is provided on the housing (10).
12. A system composed of guard (16) and power tool as recited in claim 1 , wherein
a rotation-prevention means (20) is provided with a blocking means (32, 40) on the guard side and with a corresponding stop means (34, 42) on the power tool side.
13. The system as recited in claim 12 , wherein
the rotation-prevention means. (20) can be triggered by the insertion tool (14) acting on the guard (16).
14. An angle grinder, the grinding disc of which is covered, at least in some areas, by a guard (16), as recited in claim 1.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US12/797,663 US8011997B2 (en) | 2003-10-17 | 2010-06-10 | Guard for an electric machine tool, electric machine tool, and system comprising a guard and electric machine tool |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10348395.0 | 2003-10-17 | ||
DE10348395A DE10348395A1 (en) | 2003-10-17 | 2003-10-17 | Protective cover for a power tool, power tool and system with protective hood and power tool |
PCT/DE2004/001716 WO2005044514A1 (en) | 2003-10-17 | 2004-07-30 | Guard for an electric machine tool, electric machine tool, and system comprising a guard and electric machine tool |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US12/797,663 Continuation US8011997B2 (en) | 2003-10-17 | 2010-06-10 | Guard for an electric machine tool, electric machine tool, and system comprising a guard and electric machine tool |
Publications (1)
Publication Number | Publication Date |
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US20060286910A1 true US20060286910A1 (en) | 2006-12-21 |
Family
ID=34442056
Family Applications (2)
Application Number | Title | Priority Date | Filing Date |
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US10/552,225 Abandoned US20060286910A1 (en) | 2003-10-17 | 2004-07-30 | Guard for an electric machine tool, electric machine tool, and system comprising a guard and electric machine tool |
US12/797,663 Expired - Fee Related US8011997B2 (en) | 2003-10-17 | 2010-06-10 | Guard for an electric machine tool, electric machine tool, and system comprising a guard and electric machine tool |
Family Applications After (1)
Application Number | Title | Priority Date | Filing Date |
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US12/797,663 Expired - Fee Related US8011997B2 (en) | 2003-10-17 | 2010-06-10 | Guard for an electric machine tool, electric machine tool, and system comprising a guard and electric machine tool |
Country Status (5)
Country | Link |
---|---|
US (2) | US20060286910A1 (en) |
EP (2) | EP2962809B1 (en) |
CN (1) | CN1867425B (en) |
DE (1) | DE10348395A1 (en) |
WO (1) | WO2005044514A1 (en) |
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US20100323595A1 (en) * | 2008-02-25 | 2010-12-23 | Attila Nagy | Hand-held power tool, in particular hand-guided grinding machine |
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US20160176007A1 (en) * | 2013-08-02 | 2016-06-23 | Rhodius Schleifwerkzeuge Gmbh & Co. Kg | Assembly having a handheld power tool and a roughing disk |
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US9878415B1 (en) * | 2014-07-22 | 2018-01-30 | Durell Laboratories, Inc. | Portable ski and snowboard edge sharpener |
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DE102005063017B4 (en) | 2005-12-30 | 2019-05-16 | Robert Bosch Gmbh | Hand-held power tool with a protective cover |
DE102006053305A1 (en) * | 2006-11-13 | 2008-05-15 | Robert Bosch Gmbh | Hand tool with protective hood, in particular angle grinder |
DE102008023324A1 (en) | 2008-05-13 | 2009-11-19 | Aeg Electric Tools Gmbh | Protective hood for a power tool, in particular an angle grinder and power tool with such a protective hood |
JP2010274404A (en) * | 2009-06-01 | 2010-12-09 | Makita Corp | Fixture fall preventing structure for grinding wheel cover in disc grinder |
US9542203B2 (en) | 2010-12-06 | 2017-01-10 | Microsoft Technology Licensing, Llc | Universal dock for context sensitive computing device |
US8923770B2 (en) | 2010-12-09 | 2014-12-30 | Microsoft Corporation | Cognitive use of multiple regulatory domains |
US8792429B2 (en) | 2010-12-14 | 2014-07-29 | Microsoft Corporation | Direct connection with side channel control |
US8948382B2 (en) | 2010-12-16 | 2015-02-03 | Microsoft Corporation | Secure protocol for peer-to-peer network |
US9294545B2 (en) | 2010-12-16 | 2016-03-22 | Microsoft Technology Licensing, Llc | Fast join of peer to peer group with power saving mode |
US8971841B2 (en) * | 2010-12-17 | 2015-03-03 | Microsoft Corporation | Operating system supporting cost aware applications |
DE102012214834A1 (en) * | 2012-08-21 | 2014-02-27 | Robert Bosch Gmbh | Guard device |
EP3546124A1 (en) * | 2018-03-29 | 2019-10-02 | HILTI Aktiengesellschaft | Angle grinder |
US11358267B2 (en) * | 2019-09-11 | 2022-06-14 | Textron Innovations Inc. | Tool guard |
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DE19946364B4 (en) * | 1999-09-28 | 2008-09-18 | Metabowerke Gmbh | Guard assembly on an angle grinder |
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2003
- 2003-10-17 DE DE10348395A patent/DE10348395A1/en not_active Withdrawn
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2004
- 2004-07-30 EP EP15177840.4A patent/EP2962809B1/en not_active Expired - Fee Related
- 2004-07-30 US US10/552,225 patent/US20060286910A1/en not_active Abandoned
- 2004-07-30 CN CN2004800304904A patent/CN1867425B/en active Active
- 2004-07-30 WO PCT/DE2004/001716 patent/WO2005044514A1/en active Application Filing
- 2004-07-30 EP EP04762561.1A patent/EP1677948B1/en active Active
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2010
- 2010-06-10 US US12/797,663 patent/US8011997B2/en not_active Expired - Fee Related
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US4059930A (en) * | 1975-07-30 | 1977-11-29 | The Black And Decker Manufacturing Company | Removable guard arrangement for a power tool having a rotating head for performing work on a workpiece |
US4574532A (en) * | 1983-10-27 | 1986-03-11 | C. & E. Fein Gmbh & Co. | Protective-hood fastening for portable angled grinders |
US5005321A (en) * | 1986-10-28 | 1991-04-09 | Robert Bosch Gmbh | Protective hood for grinding machines, particularly angle grinders, and suitable fastening receptacle for the latter |
US4924635A (en) * | 1987-12-24 | 1990-05-15 | C. & E. Feini GmbH & Co. | Portable grinder with adjustable protective hood |
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Cited By (15)
Publication number | Priority date | Publication date | Assignee | Title |
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EP2204262B1 (en) * | 2007-10-22 | 2014-08-13 | Makita Corporation | Stopper of wheel guard in grinder |
EP2204262A1 (en) * | 2007-10-22 | 2010-07-07 | Makita Corporation | Stopper of wheel guard in grinder |
US20100304648A1 (en) * | 2007-11-27 | 2010-12-02 | Cornelius Boeck | Hand-held power tool |
US8500521B2 (en) * | 2007-11-27 | 2013-08-06 | Robert Bosch Gmbh | Hand-held power tool |
US20100323595A1 (en) * | 2008-02-25 | 2010-12-23 | Attila Nagy | Hand-held power tool, in particular hand-guided grinding machine |
US8512104B2 (en) * | 2008-02-25 | 2013-08-20 | Robert Bosch Gmbh | Hand-held power tool, in particular hand-guided grinding machine |
US20120108154A1 (en) * | 2010-11-02 | 2012-05-03 | Makita Corporation | Disc grinders |
US9102032B2 (en) * | 2010-11-02 | 2015-08-11 | Makita Corporation | Disc grinders |
US20160176007A1 (en) * | 2013-08-02 | 2016-06-23 | Rhodius Schleifwerkzeuge Gmbh & Co. Kg | Assembly having a handheld power tool and a roughing disk |
US9751185B2 (en) * | 2013-08-02 | 2017-09-05 | Rhodius Schleifwerkzeuge Gmbh & Co. Kg | Assembly having a handheld power tool and a roughing disk |
US9878415B1 (en) * | 2014-07-22 | 2018-01-30 | Durell Laboratories, Inc. | Portable ski and snowboard edge sharpener |
US10905938B2 (en) * | 2014-07-22 | 2021-02-02 | Durell Laboratories, Inc. | Portable ski and snowboard edge sharpener and method of using the same |
US20160214349A1 (en) * | 2015-01-26 | 2016-07-28 | Dyi-chung Hu | Wafer reconfiguration |
US9545776B2 (en) * | 2015-01-26 | 2017-01-17 | Dyi-chung Hu | Wafer reconfiguration |
US10964580B2 (en) | 2015-01-26 | 2021-03-30 | Dyi-chung Hu | Wafer reconfiguration during a coating process or an electric plating process |
Also Published As
Publication number | Publication date |
---|---|
EP1677948A1 (en) | 2006-07-12 |
CN1867425A (en) | 2006-11-22 |
EP1677948B1 (en) | 2016-09-07 |
CN1867425B (en) | 2013-07-31 |
US20100248599A1 (en) | 2010-09-30 |
DE10348395A1 (en) | 2005-05-19 |
US8011997B2 (en) | 2011-09-06 |
WO2005044514A1 (en) | 2005-05-19 |
EP2962809A1 (en) | 2016-01-06 |
EP2962809B1 (en) | 2019-06-12 |
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Legal Events
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AS | Assignment |
Owner name: ROBERT BOSCH GMBH, GERMANY Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:VOIGT, MIKE;KLEIDER, ALBERT;NEEF, KURT;REEL/FRAME:018128/0409;SIGNING DATES FROM 20050901 TO 20050905 |
|
STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- AFTER EXAMINER'S ANSWER OR BOARD OF APPEALS DECISION |