CN104334816A - Chisel assembly having multiple chisel bars for breaker - Google Patents
Chisel assembly having multiple chisel bars for breaker Download PDFInfo
- Publication number
- CN104334816A CN104334816A CN201380026116.6A CN201380026116A CN104334816A CN 104334816 A CN104334816 A CN 104334816A CN 201380026116 A CN201380026116 A CN 201380026116A CN 104334816 A CN104334816 A CN 104334816A
- Authority
- CN
- China
- Prior art keywords
- cutter bar
- mentioned
- cutter
- bar
- quartering hammer
- 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.)
- Pending
Links
- 239000011435 rock Substances 0.000 claims description 33
- 238000010276 construction Methods 0.000 claims description 22
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000013467 fragmentation Methods 0.000 description 3
- 238000006062 fragmentation reaction Methods 0.000 description 3
- 238000000354 decomposition reaction Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 102000016938 Catalase Human genes 0.000 description 1
- 108010053835 Catalase Proteins 0.000 description 1
- 238000005474 detonation Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/02—Percussive tool bits
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D17/00—Details of, or accessories for, portable power-driven percussive tools
- B25D17/08—Means for retaining and guiding the tool bit, e.g. chucks allowing axial oscillation of the tool bit
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D9/00—Portable percussive tools with fluid-pressure drive, i.e. driven directly by fluids, e.g. having several percussive tool bits operated simultaneously
- B25D9/06—Means for driving the impulse member
- B25D9/12—Means for driving the impulse member comprising a built-in liquid motor, i.e. the tool being driven by hydraulic pressure
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21B—EARTH OR ROCK DRILLING; OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR A SLURRY OF MINERALS FROM WELLS
- E21B10/00—Drill bits
- E21B10/46—Drill bits characterised by wear resisting parts, e.g. diamond inserts
- E21B10/58—Chisel-type inserts
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/105—Exchangeable tool components
- B25D2250/111—Bits, i.e. inserts or attachments for hammer, chisel, pick
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25D—PERCUSSIVE TOOLS
- B25D2250/00—General details of portable percussive tools; Components used in portable percussive tools
- B25D2250/275—Tools having at least two similar components
- B25D2250/285—Tools having three or more similar components, e.g. three motors
- B25D2250/291—Tools having three or more parallel bits, e.g. needle guns
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Percussive Tools And Related Accessories (AREA)
- Earth Drilling (AREA)
Abstract
The present invention relates to a chisel assembly having multiple chisel bars for a breaker. The breaker comprises: a back head provided with a gas chamber; a cylinder which is connected to the lower part of the back head and has an embedded piston that is elevated by oil pressure; and a front head which is connected to the lower part of the cylinder and has an embedded chisel assembly that crushes bedrock by the striking of the piston, wherein the chisel assembly comprises: a chisel body having a stopper pin coupled to the outer surface thereof such that the chisel body can be returned upwards after the striking of the piston; and multiple chisel bars which are coupled to the chisel body and are exposed to the lower part of the front head.
Description
Technical field
The present invention relates to a kind of quartering hammer cutter assembly possessing multiple cutter bar, more specifically, the surface of most rock or concrete construction can be guaranteed with multiple cutter bar when fractured rock or concrete construction, thus, prevent from rock from being spilt and cut a hole bar being slided, and can disposable rock in small, broken bits or concrete construction.
Background technology
Usually, generally commonly use the modes such as blast or fragmentation when fractured rock or concrete construction, but this detonation way is costly, and dangerous, be of little use, therefore mainly use the mode utilizing quartering hammer broken.
Above-mentioned quartering hammer is installed on the construction machinery equipment of excavator, loader etc., is widely used in breaking concrete or rock.Now, the hydraulic lifting piston by cylinder hits cutter bar, according to produced hitting power breaking concrete and rock.
As mentioned above, impact energy to be delivered to object by the round action of cutter bar broken by strike thing for quartering hammer.
Further, the cutter bar of direct target thing needs often to change, in order to the cutter changing wearing and tearing or breakage will dismantle the inconvenience such as body.
Further, existing quartering hammer only possesses single cutter bar, during by single cutter bar fractured rock and concrete, in order to by the size needed for catalase one-tenth, needs fractured rock and concrete construction for several times.
Further, when surface is broken and polishes or tilt, the cutter bar distal portion of quartering hammer easily can skid off and be not easy to carry out fragmentation, and spills toward side hidden danger such as causing security incident.
Summary of the invention
The present invention proposes to improve problem described above, the first object of the present invention is, a kind of quartering hammer cutter assembly possessing multiple cutter bar is provided, when fractured rock or concrete construction, the surface of most rock or concrete construction can be guaranteed with multiple cutter bar, thus prevent rock from being spilt, cut a hole bar and skid off, and can disposable rock in small, broken bits or concrete.
The second object of the present invention is, provides a kind of quartering hammer cutter assembly possessing multiple cutter bar, when changing the cutter bar of damage, not only only can change the correspondence cutter bar of damage, and can replace using with the cutter bar of general hammer drill, thus, reduce expenses.
The third object of the present invention is, provides a kind of quartering hammer cutter assembly possessing multiple cutter bar, multiple cutter bar is incorporated into chiseled body to disperse the hitting power of hitting rock or concrete construction, thus extends the life-span of cutter bar.
In order to this becomes above-mentioned purpose, according to feature of the present invention, the first invention of the present invention provides the quartering hammer cutter possessing multiple cutter bar assembly, and wherein, quartering hammer, comprising: bonnet, possesses air cavity; Cylinder, is connected to the bottom of above-mentioned bonnet, and inside is provided with the piston according to hydraulic lifting; Protecgulum, is connected to the bottom of above-mentioned cylinder, according to the strike fractured rock of piston, is provided with cutter assembly in inside, and above-mentioned cutter assembly, comprising: chiseled body, in order to upwards return after being hit, is combined with latch at outer peripheral face by piston; Multiple cutter bar, combines with above-mentioned chiseled body, and exposes the bottom at protecgulum, and above-mentioned cutter bar, comprising: main cutter bar, is distributed in the central authorities of chiseled body; Multiple auxiliary cutter bar, diameter is less than above-mentioned main cutter bar relatively, and is distributed in around main cutter bar.
Second invention of the present invention, according to the first invention, in above-mentioned chiseled body in order to be formed with vertically through through hole in conjunction with multiple cutter bar, is formed with projection prevents from cutting a hole bar disengaging with the cutter lid placing the upper end being formed at cutter bar in the inside of above-mentioned each through hole.
3rd invention of the present invention, according to the second invention, in above-mentioned chiseled body in order to through in conjunction with main cutter bar and auxiliary cutter bar, be formed with vertically through multiple through holes, the inside of above-mentioned each through hole is formed with projection prevents from cutting a hole bar disengaging with the cutter lid placing the upper end being formed at main cutter bar and auxiliary cutter bar.
4th invention of the present invention, according to the first invention, the length of above-mentioned auxiliary cutter bar is less than the length of main cutter bar relatively.
5th invention of the present invention, according to the first invention, the length of above-mentioned main cutter bar is less than the length of above-mentioned auxiliary cutter bar relatively.
6th invention of the present invention, according to the first invention, above-mentioned main cutter bar one body extension is formed in the bottom of chiseled body, in above-mentioned chiseled body in order to through combination assists cutter bar to be formed with vertically through multiple through holes, be formed with projection prevents auxiliary cutter bar disengaging with the cutter lid placing the upper end being formed at auxiliary cutter bar in the inside of above-mentioned each through hole.
Invention effect
According to the quartering hammer cutter assembly possessing multiple cutter bar of the present invention, can with the multiple surface of guaranteeing rock or concrete construction of multiple cutter bar when the structure such as fractured rock or concrete, thus prevent rock from being spilt, cut a hole bar and skid off, and can disposable rock in small, broken bits and concrete, thus save operating cost.
Further, only can change the correspondence cutter bar of damage when changing the cutter bar of damage, and can replace using with the cutter bar of general hammer drill, thus can reduce expenses.
Further, hit rock or concrete hitting power by multiple cutter bar being incorporated into chiseled body dispersion, thus extend the life-span of cutter bar.
Accompanying drawing explanation
Fig. 1 is the phantom drawing being combined with the quartering hammer of the quartering hammer cutter assembly possessing multiple cutter bar according to one embodiment of the invention.
Fig. 2 is the phantom of Fig. 1.
Fig. 3 is the decomposition diagram that the quartering hammer possessing multiple cutter bar be separated with quartering hammer of Fig. 1 cuts a hole assembly.
Fig. 4 is the phantom being combined with the quartering hammer possessing multiple cutter bar quartering hammer cutter assembly according to two embodiments of the present invention.
Fig. 5 is the phantom being combined with the quartering hammer of the quartering hammer cutter assembly possessing multiple cutter bar of other examples according to Fig. 4.
Fig. 6 is the phantom being combined with the quartering hammer of the quartering hammer cutter assembly possessing multiple cutter bar according to the third embodiment of the invention.
Detailed description of the invention
Below, the quartering hammer cutter assembly of what present invention will be described in detail with reference to the accompanying possess multiple cutter bar.
Fig. 1 is the phantom drawing being combined with the quartering hammer of the quartering hammer cutter assembly possessing multiple cutter bar according to one embodiment of the invention, Fig. 2 is the phantom of Fig. 1, and Fig. 3 is the decomposition diagram that the quartering hammer possessing multiple cutter bar be separated with quartering hammer of Fig. 1 cuts a hole assembly.
As shown in Figure 1 to Figure 3, the quartering hammer cutter assembly 100 possessing multiple cutter bar of the present invention, when the structure such as fractured rock or concrete, can with the multiple surface of guaranteeing rock or concrete construction of multiple cutter bar, thus prevent rock from being spilt and cut a hole bar and skid off, and can disposable rock in small, broken bits and concrete construction.
Before explaining the present invention, the present invention is the structure of the protecgulum 230 being provided with quartering hammer 200 in inside.
Described quartering hammer 200, comprising: bonnet 210, possesses air cavity; Cylinder 220, is connected to the bottom of above-mentioned bonnet 210, is provided with the piston 221 according to hydraulic lifting in inside; Protecgulum 230, is connected to the bottom of above-mentioned cylinder 220, according to strike fractured rock and the concrete construction of piston 221, and is provided with cutter assembly 100 in inside.
Describedly be configured to, if the piston 221 in the hydraulic cylinder 220 passed in and out by means of cylinder 220 rises, then the gas be filled in the air cavity of bonnet 210 is compressed, and is declined by the power piston 221 expanded, thus hits cutter assembly 100.Its result, the cutter bar 120 being incorporated into cutter assembly 100 can fractured rock concrete construction.
The quartering hammer cutter assembly 100 possessing multiple cutter bar according to the present invention is divided into two large divisions, chiseled body 110, latch 114 is combined with at outer peripheral face, after piston 221 is hit, pass through press produce pressure upwards reply, multiple cutter bar 120, combines with above-mentioned chiseled body 110, and exposes in the bottom of protecgulum 230.
Described chiseled body 110 is that upper end is configured in and is formed on the strike room 231 of protecgulum 230, and is connected to the structure of the lower end of the piston 221 in above-mentioned cylinder 220.Strike according to piston 221 declines and energy kata-rocks or concrete construction.
Further, above-mentioned chiseled body 110 forms guiding groove 113 at outer peripheral face.Described guiding groove 113 is till chiseled body 110 is moved to guiding groove 113 length according to the strike of piston 221 by the latch 114 being fixed on protecgulum 230 toward bottom.
Above-mentioned multiple cutter bar 120 combines with above-mentioned chiseled body 110, and exposes in the bottom of protecgulum 230, thus can fractured rock or concrete construction.
Above-mentioned chiseled body 110, in order in conjunction with multiple cutter bar 120, has been formed through multiple vertical through-via 111, is formed with projection 112 prevents from cutting a hole bar 120 disengaging with the cutter lid H placing the upper end being formed at cutter bar 120 in the inside of above-mentioned each through hole 111.
Above-mentioned formation exposes in the upper end of chiseled body 110 by cutter lid H, according to the strike of piston 221, chiseled body 110 and multiple cutter bar 120 overwhelmed, thus the formation of energy fractured rock or concrete construction.
Any one cutter bar 120 being worn or damaging distinctly can be replaced in above-mentioned multiple cutter bar 120.
Further, above-mentioned each cutter bar 120 is configured to the diameter that can replace use with the cutter bar of hammer drill, thus increases the mutual interchangeability with hammer drill.
Further, the formation of the first embodiment is by using multiple cutter bar 120, can disperseing the hitting power of rock or concrete construction, thus, the structure in the life-span of each cutter bar 120 can be extended.
Fig. 4 is the sectional view being combined with the quartering hammer of the quartering hammer cutter assembly possessing multiple cutter bar according to a second embodiment of the present invention, and Fig. 5 is the phantom being combined with the quartering hammer of the quartering hammer cutter assembly possessing multiple cutter bar of other examples according to Fig. 4.
First, as shown in Figure 4, the second embodiment comprises the first embodiment, and above-mentioned cutter bar 120, comprising: main cutter bar 121, is distributed in chiseled body 110 central authorities; Multiple auxiliary cutter bar 122, diameter is less than above-mentioned main cutter bar 121 relatively, and is distributed in main cutter bar 121 around.
And, above-mentioned chiseled body 110 in order to through in conjunction with main cutter bar 121 and auxiliary cutter bar 122, be formed with vertical multiple through holes 111, be formed with projection 112 in the inside of above-mentioned each through hole 111 and prevent from departing from the cutter lid H placing the upper end being formed as main cutter bar 121 and auxiliary cutter bar 122.
This structure is identical with the first embodiment, exposes in the upper end of chiseled body 110 by cutter lid H, identical with chiseled body 110 according to the strike of piston 221, and multiple auxiliary cutter bar 122 is hit continuously with single main cutter bar 121.Further, equally, when the auxiliary cutter bar 122 of the second embodiment and main cutter bar 121 are worn or damage, also only corresponding cutter bar 121,122 can be replaced separately.
In second embodiment, expose the length being relatively less than main cutter bar 121 in the length of the auxiliary cutter bar 122 of the bottom of protecgulum 230.
This structure is, first passes through the large main cutter bar 121 primary fragmentation rock of diameter or concrete construction, and secondary is by auxiliary structure of cutting a hole the double fractured rock of bar 122 or concrete construction.Only being operated by such method once can by the size needed for one-tenth in small, broken bits for concrete construction.
In addition, according to the quartering hammer cutter assembly 100 possessing multiple cutter bar of the present invention, as shown in Fig. 5 (a), above-mentioned main cutter bar 121 can be identical with auxiliary length of cutting a hole bar 122, and, as shown in Fig. 5 (b), the length of above-mentioned main cutter bar 121 can be less than the length arranging above-mentioned auxiliary cutter bar 122 relatively.
Fig. 6 is the phantom being combined with the quartering hammer of the quartering hammer cutter assembly possessing multiple cutter bar according to the third embodiment of the invention.
As shown in Figure 6, the 3rd embodiment comprises the second embodiment, and above-mentioned main cutter bar 121 extends formation at the portion integral of chiseled body 110.
Identical with the second embodiment, the projection that above-mentioned auxiliary cutter bar 122 is formed in the inside of chiseled body 110 is placed cutter lid H.
Described formation is a structure formed as one with above-mentioned chiseled body 110 by the main cutter bar 121 few to damage, has the structure simplifying cutter assembly 100, and is easy to the advantage of assembling.
It can thus be appreciated that the quartering hammer cutter assembly possessing multiple cutter bar according to the present invention by main cutter bar and can assist cutter bar and forming as one of chiseled body.
The present invention goes for hammer drill, and, except using with hydraulic pressure, also can be used as pneumatics use.
As mentioned above, right of the present invention can not be confined to embodiment described above, should be determined by right, carries out various distortion to one skilled in the art and amendment is clear and definite in right.
Claims (6)
1. possess a quartering hammer cutter assembly for multiple cutter bar, it is characterized in that quartering hammer comprises:
Bonnet, possesses air cavity;
Cylinder, is connected to the bottom of above-mentioned bonnet, and is provided with the piston according to hydraulic lifting in inside;
Protecgulum, is connected to the bottom of above-mentioned cylinder, according to strike fractured rock and the concrete construction of piston, is provided with cutter assembly in inside,
Above-mentioned multiple cutter assembly, comprising:
Chiseled body, in order to upwards return after being hit, is combined with latch at outer peripheral face by piston;
Multiple cutter bar, combines with above-mentioned chiseled body, and exposes the bottom at protecgulum,
Above-mentioned cutter bar, comprising:
Main cutter bar, is distributed in the central authorities of chiseled body;
Multiple auxiliary cutter bar, diameter is less than above-mentioned main cutter bar relatively, and is distributed in around main cutter bar.
2. the quartering hammer cutter assembly possessing multiple cutter bar according to claim 1, its its Zheng Zhengzheng, levying above-mentioned chiseled body to be formed with vertically through through hole in conjunction with multiple cutter bar, being formed with projection prevents from cutting a hole bar disengaging with the cutter lid placing the upper end being formed at cutter bar in the inside of above-mentioned each through hole.
3. the quartering hammer cutter assembly possessing multiple cutter bar according to claim 2, it is characterized in that, in above-mentioned chiseled body in order to through in conjunction with main cutter bar and auxiliary cutter bar, be formed with vertically through multiple through holes, be formed with projection in the inside of above-mentioned each through hole to place the cutter lid of the upper end being formed at main cutter bar and auxiliary cutter bar to prevent the disengaging of each cutter bar.
4. the quartering hammer cutter assembly possessing multiple cutter bar according to claim 1, it is characterized in that, the length of above-mentioned auxiliary cutter bar is less than the length of main cutter bar relatively.
5. the quartering hammer cutter assembly possessing multiple cutter bar according to claim 1, it is characterized in that, the length of above-mentioned main cutter bar is less than the length of above-mentioned auxiliary cutter bar relatively.
6. the quartering hammer cutter assembly possessing multiple cutter bar according to claim 1, it is characterized in that, above-mentioned main cutter bar one body extension is formed in the bottom of chiseled body, in above-mentioned chiseled body in order to through combination assists cutter bar to be formed with vertically through multiple through holes, be formed with projection prevents auxiliary cutter bar disengaging with the cutter lid placing the upper end being formed at auxiliary cutter bar in the inside of above-mentioned each through hole.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2012-0027812 | 2012-03-19 | ||
| KR1020120027812A KR101193806B1 (en) | 2012-03-19 | 2012-03-19 | A chisel assembly for breaker with multi chisel rod |
| PCT/KR2013/002153 WO2013141531A1 (en) | 2012-03-19 | 2013-03-18 | Chisel assembly having multiple chisel bars for breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104334816A true CN104334816A (en) | 2015-02-04 |
Family
ID=47288510
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201380026116.6A Pending CN104334816A (en) | 2012-03-19 | 2013-03-18 | Chisel assembly having multiple chisel bars for breaker |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6096275B2 (en) |
| KR (1) | KR101193806B1 (en) |
| CN (1) | CN104334816A (en) |
| WO (1) | WO2013141531A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR101476546B1 (en) * | 2013-07-17 | 2014-12-24 | 윤영덕 | Hydraulic Hitting and Drilling Apparatus |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190821082A (en) * | 1908-10-06 | 1909-08-26 | George Henry Rayner | An Improved Percussive Hand Tool. |
| CN1090368A (en) * | 1992-08-31 | 1994-08-03 | 洛克特克有限公司 | Nose block assembly |
| JP2974305B1 (en) * | 1998-06-15 | 1999-11-10 | 川崎重工業株式会社 | Slag removal device |
| KR101045290B1 (en) * | 2008-12-19 | 2011-06-29 | (주)탑드릴 | Multi hammer for the use of reaming excavation hole |
Family Cites Families (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6026932Y2 (en) * | 1981-08-13 | 1985-08-14 | 日東技研株式会社 | impact tools |
| JPS5940181Y2 (en) * | 1981-11-25 | 1984-11-13 | 栗田鑿岩機株式会社 | Surface scraping machine for fireproof materials, concrete materials, etc. |
| JPH0274184U (en) * | 1988-11-23 | 1990-06-06 | ||
| JP3023692B2 (en) * | 1990-06-28 | 2000-03-21 | 株式会社スリーボンド | Conductive adhesive |
| JP3023692U (en) * | 1995-10-12 | 1996-04-23 | 株式会社泉精器製作所 | Vibration type chipping machine |
| DE19604171A1 (en) * | 1996-02-06 | 1997-08-07 | Bosch Gmbh Robert | Electrical hand tool for surface removal |
| FR2808720B1 (en) * | 2000-05-12 | 2002-07-26 | Montabert Ets | BREAKER TYPE PERCUSSION APPARATUS |
| ES2293382T3 (en) * | 2003-12-19 | 2008-03-16 | Clark Equipment Company | IMPACT TOOL. |
| JP4809183B2 (en) * | 2006-10-17 | 2011-11-09 | Ｈｏｙａ株式会社 | Vapor deposition material removal apparatus and vapor deposition material removal method |
| KR20090007018U (en) * | 2008-01-07 | 2009-07-13 | 김태수 | Impact poll of breaker |
-
2012
- 2012-03-19 KR KR1020120027812A patent/KR101193806B1/en active IP Right Grant
-
2013
- 2013-03-18 JP JP2015501569A patent/JP6096275B2/en not_active Expired - Fee Related
- 2013-03-18 CN CN201380026116.6A patent/CN104334816A/en active Pending
- 2013-03-18 WO PCT/KR2013/002153 patent/WO2013141531A1/en active Application Filing
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB190821082A (en) * | 1908-10-06 | 1909-08-26 | George Henry Rayner | An Improved Percussive Hand Tool. |
| CN1090368A (en) * | 1992-08-31 | 1994-08-03 | 洛克特克有限公司 | Nose block assembly |
| JP2974305B1 (en) * | 1998-06-15 | 1999-11-10 | 川崎重工業株式会社 | Slag removal device |
| KR101045290B1 (en) * | 2008-12-19 | 2011-06-29 | (주)탑드릴 | Multi hammer for the use of reaming excavation hole |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2013141531A1 (en) | 2013-09-26 |
| KR101193806B1 (en) | 2012-10-23 |
| JP6096275B2 (en) | 2017-03-15 |
| JP2015510846A (en) | 2015-04-13 |
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| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150204 |
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| WD01 | Invention patent application deemed withdrawn after publication |