CN100335735C - Impact force generator - Google Patents
Impact force generator Download PDFInfo
- Publication number
- CN100335735C CN100335735C CNB2004100617826A CN200410061782A CN100335735C CN 100335735 C CN100335735 C CN 100335735C CN B2004100617826 A CNB2004100617826 A CN B2004100617826A CN 200410061782 A CN200410061782 A CN 200410061782A CN 100335735 C CN100335735 C CN 100335735C
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- weight
- spring
- force
- mentioned
- rotary body
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- Expired - Lifetime
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- 230000005484 gravity Effects 0.000 claims abstract description 13
- 230000006835 compression Effects 0.000 claims description 14
- 238000007906 compression Methods 0.000 claims description 14
- 238000005553 drilling Methods 0.000 description 7
- 230000003321 amplification Effects 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000013507 mapping Methods 0.000 description 4
- 238000003199 nucleic acid amplification method Methods 0.000 description 4
- 230000003116 impacting effect Effects 0.000 description 3
- 206010016173 Fall Diseases 0.000 description 2
- 238000009412 basement excavation Methods 0.000 description 2
- 230000033228 biological regulation Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000035515 penetration Effects 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
Images
Classifications
-
- 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
- E21B7/00—Special methods or apparatus for drilling
- E21B7/02—Drilling rigs characterised by means for land transport with their own drive, e.g. skid mounting or wheel mounting
- E21B7/025—Rock drills, i.e. jumbo drills
-
- 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
- E21B10/08—Roller bits
-
- 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
- E21B3/00—Rotary drilling
- E21B3/02—Surface drives for rotary drilling
Landscapes
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mining & Mineral Resources (AREA)
- Physics & Mathematics (AREA)
- Environmental & Geological Engineering (AREA)
- Fluid Mechanics (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Mechanical Engineering (AREA)
- Earth Drilling (AREA)
- Placing Or Removing Of Piles Or Sheet Piles, Or Accessories Thereof (AREA)
Abstract
The invention provides a highly versatile impact force generator capable of generating large impact force, and easy in adjusting magnitude and an impact frequency of the impact force. This impact force generator has a slidingly arranged weight hammer, a spring for applying energizing force to this weight hammer, and a rotary body provided with a locking part for moving the weight hammer in the direction for increasing the energizing force of the spring by locking the weight hammer from an original position by rotating, and releasing locking in a prescribed position. The weight hammer is locked by rotation of the rotary body, and is moved in the direction for increasing the energizing force of the spring. The weight hammer moves in the original position direction by its gravity and the energizing force of the spring by releasing the locking in the prescribed position. An impact object body is impacted by load force of the gravity of the weight hammer and the energizing force of the spring.
Description
Technical field
The present invention relates to be suitable for the impact force generator of auger, pile driver, oil pressure crushing engine, geological mapping machine and penetrometer etc.
Background technology
In the past, provide a kind of following device, in this device, weight is provided with the spring to this weight application of force, and the impact force that falls by weight impacts and impacted thing.According to this device, because the impact force of the application of force stack of the gravity of generation weight and spring, so even distance of fall than under the short situation, still can obtain bigger impact force.
The applicant has provided and has adopted above-mentioned impact force generator.This auger is formed by weight, lifter, hammer anvil (Ha Application マ サ Block) (being impacted thing) and spring, and described weight can be arranged on the guide peg that vertically fixedly installs with being free to slide; Described lifter is mentioned this weight, makes its whereabouts; Described hammer anvil is arranged on the following line of fall of above-mentioned weight, is impacted by the whereabouts of weight; Described spring is to the above-mentioned weight application of force; This weight falls rise to the height of regulation by lifter after, but this moment, and when weight was raised by lifter, spring was compressed and when weight falls, to the weight application of force.Therefore, hammer anvil impacted by the impact force of the application of force of the impact force of the free-falling of weight and spring stack (such as, with reference to patent documentation 1).
Patent documentation 1: the practical new case of Japan is logined communique No. 3085813
The impact force generator that above-mentioned auger adopted preferably produces bigger impact force in auger.But, in order not to be only applicable to auger, but also be applicable to pile driver, hydraulic breaker, geological mapping machine and penetrometer etc., lifter in the impact force generator that above-mentioned auger adopted has following structure, promptly, striding on the chain that is around between the sprocket wheel, be fixed with the fixed part of weight, moving of the chain that the motor that is connected with sprocket wheel by utilization drives, utilize fixedly weight of fixed part, and it is mentioned upward from the below and make its whereabouts, therefore, have the following problem that should improve.
(1) is difficult to be adjusted at and mentions the moment that makes its whereabouts and impact behind the weight.
(2) can not increase the number of times that impacts in the stipulated time too much.
(3) in the short occasion of the displacement (distance of fall) of weight, be difficult to adopt.So, also miniaturization is constituted obstacle.
(4) because chain is striden and is around at least 2 sprocket wheels, so necessarily require the space, it is big that size becomes, and structure is also just complicated.
Summary of the invention
The present invention provides a kind of impact force generator in view of the above problems, and the versatility of this impact force generator is good, can produce bigger impact force, also adjusts the size of impact force easily and impacts number of times.
In order to solve above-mentioned problem, impact force generator of the present invention is characterized in that it comprises: along the weight that guide peg is provided with being free to slide, this weight is provided with projection; This weight is applied the spring of active force; Rotary body, be provided with fixed part, the projection of fixing above-mentioned weight during this fixed part rotation, this weight is moved from the direction of original position to the active force increase of above-mentioned spring, and remove said fixing at assigned position, rotation by rotary body fixes weight, and weight is moved along the direction of the active force increase of spring, and remove said fixing at assigned position, thus, weight moves to the original position direction by the active force of its gravity and spring, and utilizes the superposed force of the active force of the gravity of weight and spring, impacts and is impacted body.
The superposed force of the gravity that thus, can be by weight and the active force of spring impacts.In addition, the weight action that can mention or fall by the rotation of rotary body.
In addition, impact force generator of the present invention, it comprises: along the weight that guide peg is provided with being free to slide, this weight is provided with projection; This weight is applied the spring of active force; Rotary body is provided with fixed part, and the projection of fixing above-mentioned weight during this fixed part rotation makes this weight move from the direction of original position to the active force increase of above-mentioned spring, and removes said fixing at assigned position; Hammer anvil, this hammer anvil is impacted by weight, on above-mentioned hammer anvil, by main shaft or directly by the spline combination, mainshaft gear is set with moving freely relatively, and the gear of CD-ROM drive motor and the engagement of this mainshaft gear are so that this mainshaft gear is rotatable, rotation by above-mentioned rotary body is weight fixedly, and weight is moved to the direction of the active force increase of spring, and remove said fixing at assigned position, thus, weight is by the active force of its gravity and spring, move to the original position direction, and utilize the superposed force of the active force of the gravity of weight and spring, impact hammer anvil.
Thus, not only have above-mentioned effect, and can apply impact force and revolving force the parts that are connected with weight.Owing to weight is moved by guide peg or guide cylinder guiding, impacted body or hammer anvil so can correctly impact.
Also have, impact force generator of the present invention is characterised in that above-mentioned weight is the compression spring.
Thus, spring is arranged to be compressed by moving of weight, therefore can apply active force easily.
Description of drawings:
Fig. 1 is the sectional view of explanation basic principle of the present invention, the state before Fig. 1 (a) expression action, the state in Fig. 1 (b) expression course of action;
Fig. 2 is the lateral view of expression embodiments of the invention;
Fig. 3 is the schematic isometric of expression embodiments of the invention;
Fig. 4 is the major part amplification front elevation of expression embodiments of the invention;
Fig. 5 is the major part enlarged side view of expression embodiments of the invention;
Fig. 6 is the major part amplification front elevation of expression embodiments of the invention.
Concrete form of implementation
Below embodiment shown in the drawings of the present invention is elaborated.Fig. 1 (a), Fig. 1 (b) are the sectional view of explanation basic principle of the present invention, the state before Fig. 1 (a) expression action, the state in Fig. 1 (b) expression course of action.
As shown in Figure 1, impact force generator of the present invention comprises: weight 13, and this weight 13 is mounted slidably on guide peg 12, and this guide peg 12 is fixed on the casing, on the part such as shell 10; Compression spring 14,14 pairs of these weight 13 application of forces of this compression spring; Rotary body 17, this rotary body 17 is provided with fixed part 18, and this fixed part 18 is by rotation, and fixing above-mentioned weight 13 makes this weight 13 move from the home position to the direction that the active force of above-mentioned compression spring 14 increases, and removes fixing at assigned position.
Above-mentioned weight 13 is provided with projection 13a, when rotary body 17 rotations, makes said fixing portion 18 fixing.Motor 19 is connected with rotary body 17, and rotation drives this rotary body 17.Therefore, when making rotary body 17 rotations, the fixed part 18 of rotary body 17 is the projection 13a of weight 13 fixedly, and shown in Fig. 1 (b), weight 13 is mentioned upward from the state of Fig. 1 (a).At this moment, length of spring compressed 14 is compressed by weight 13, and its active force increases.In addition, during when fixed part 18 rotation of rotary body 17 and by top dead because the fixedly disengagement of fixed part 18 and the projection 13a of weight 13, thus weight 13 conduct oneself with dignity and the effect of the application of force of spring 14 under fall, impact and impacted thing (such as, hammer anvil) 15.This impact force becomes the superposed force of the application of force of the deadweight of weight 13 and spring 14.
In the impact force generator shown in Fig. 1 (a) and (b), because 1 projection 18 is arranged on the position on the circuit orbit that rotary body 17 rotated, therefore, rotary body 17 rotations 1 circle forms 1 time and impacts number of times.So the number of times that impacts in the stipulated time is determined by rotary speed.But if a plurality of projections 18 are arranged on the position on the same circuit orbit that rotary body 17 rotated, even then under the situation of identical rotary speed, impacting number of times still increases.Such as, if projection 18 is arranged on 180 ° of symmetric positions of rotary body 17, then rotary body 17 rotation half-turns just form and once impact number of times.Therefore, if make rotary body 17 oar shape in the shape of a spiral, and at its front end projection 18 is set, then rotary body 17 rotation half-turns just carry out impacting for 1 time.
In addition, in this impact force generator,,, can give the impact force of incline direction so can give not only vertically because the application of force of spring 14 acts on the weight 13.
Fig. 2～Fig. 6 represents that above-mentioned impact force generator is used for the embodiment of auger, Fig. 2 is its lateral view, Fig. 3 is its schematic isometric, Fig. 4 is the amplification front elevation of its major part, Fig. 5 is the enlarged side view of its major part, Fig. 6 is the amplification front elevation of its major part, on the building block identical with above-mentioned element shown in Figure 1, marks same mark and illustrates.
In the figure, 1 expression guide peg, free-standing stands with being inverted and is located on the main frame (ベ one ス マ シ Application) 2.In this example, show Track Type as main frame 2, this main frame 2 is located on the main body 4 but free-standing stands with being inverted by oil cylinders such as boom cylinder 7 and sliding oil cylinders 8, and this main body 4 is made of the Power Component on the bottom running body 35 and control cabinet 6 etc.Aforementioned body 4 is provided with outrigger (outrigger) 9, when operation, can stably support main frame 2.
In addition, main frame 2 can not adopt Track Type, and adopts load mode.
Be provided with slide 10 on above-mentioned guide peg 1, this slide 10 is provided with driving mechanism with being free to slide, and this driving mechanism is along guide peg 1 advance and retreat.This driving mechanism can be existing known mechanism, in this example, adopts oil cylinder 11.The front end of the piston rod 11a of oil cylinder 11 is fixed on the slide 10 and is connected.
Inside in above-mentioned slide 10 roughly is provided with: weight 13, this weight 13 are arranged on the guide peg 12 with being free to slide, and this guide peg 12 is fixed on the vertical direction that guide peg 1 is upright when being set as job state; Rotary body 17, this rotary body 17 is mentioned this weight 13 along guide peg 12, and makes its whereabouts; Hammer anvil 15, this hammer anvil 15 is arranged on the following line of fall of above-mentioned weight 13, is impacted by falling of above-mentioned weight 13; Compression spring 14,14 pairs of weights 13 of this compression spring apply the power that impacts direction to hammer anvil 15; The transmission mechanism of motor 16 makes hammer anvil 15 rotations.
In addition, above-mentioned guide peg 12 also as shown in Figure 4 and Figure 5, the top board 10a that its front end is fixed in slide 10 goes up and hangs down.
Above-mentioned weight 13 is along with the rotation of rotary body 17, and the height that is lifted to regulation falls afterwards.That is, this routine rotary body 17 as shown in Figure 4 and Figure 5, oar shape in the shape of a spiral is connected with motor 19 and is driven in rotation.Front end at this rotary body 17 is provided with fixed part 18, and in addition, weight 13 is provided with projection 13a, when projection 13a is located at fixed part 18 rotation of this rotary body 17 on the formed circuit orbit.Therefore, when rotary body 17 rotation, the position below, fixed part 18 contacts with projection 13a and is fixing and weight 13 is mentioned towards the top, and when fixed part 18 rotates to the top and when mobile, fixed part 18 is thrown off with the fixedly quilt of projection 13a at the moment, weight 13 falls.In addition, because when the rotation by rotary body 17 was raised this weight 13, compression spring 14 was compressed, its active force increases, so when weight 13 falls weight 13 is applied active force.The rotary body 17 of this example be arranged at weight 13 about and rotation synchronously, utilize described both weight 13 mentioned and fall.In addition, the two ends at the propeller-like rotary body 17 of this example are provided with fixed part 18, so the rotation half-turn just produces stroke one time.That is, during rotary body 17 rotation half-turns, carry out mentioning and falling of No. 1 weight 13.
At this moment, when weight 13 when guide peg 12 falls, hammer anvil 15 is arranged to be positioned on this time line of fall, so weight 13 impacts hammer anvil 15.The impact force of this moment is the impact force of the application of force of the compression spring 14 that superposeed on the impact force of weight 13 free-fallings.In this example, as previously mentioned, rotary body 17 rotation half-turns carry out stroke 1 time.
Here, the height that weight 13 is fallen is that the length (correct is the length of center of rotation to fixed part 18) according to the diameter of rotary body 17 is determined.
Above-mentioned hammer anvil 15 is arranged on the following line of fall of weight 13 with one heart.On the periphery of this hammer anvil 15, non-rotatable and be provided with main shaft 20 with being free to slide in the axial direction, in the periphery of this main shaft 20, by the spline combination, be provided with mainshaft gear 21, the gear of motor 16 (also comprising pinion) 22 and these mainshaft gear 21 engagements with moving freely relatively.Therefore, the revolving force that motor 16 drives is transmitted by gear 22, mainshaft gear 21, main shaft 20, makes hammer anvil 15 rotations.
, also main shaft 20 can be set here, and mainshaft gear 21 be set in the periphery spline combination of hammer anvil 15.
Therefore, when drilling rod R was connected with hammer anvil 15, drilling rod R went up the impact force and the impact force of the application of force addition of compression spring 14, the revolving force of motor 16 of the free-falling of being transmitted weight 13, and the power that feeds of oil cylinder 11.According to this auger, give impact force, revolving force on the drilling rod R, feed power, can hole.In addition, because weight 13 is provided with compression spring 14, thus not only can be vertically, but also can along inclined direction apply impact force, also can realize the boring (excavation) of incline direction.
In addition, aforementioned embodiments does not limit the present invention, present invention resides in the various distortion in the scope that does not break away from essence.Such as, the guide of weight 13 can not be a guide peg also, can be the guide of putting into guide cylinder inside.In addition, position and the quantity that spring 14 is set also can be not limited to aforementioned embodiments.
The invention effect
Such as above specifying, according to impact force generator of the present invention, obtain following effect.
(1) as impact force, the gravity of weight free-falling and the stack of the application of force of spring. Therefore, Bigger impact force can be provided, and not only the weight by weight and the height of mentioning (whereabouts Highly), and utilize spring, come impact force is controlled. Because follow the free-falling of weight, Falling speed is accelerated, and impacts number of times so can increase, and can improve drilling efficiency.
(2) owing to carrying out mentioning of weight by the rotation of rotary body and falling, so can reduce to fall Distance, but and simplified structure, therefore can carry out miniaturization.
(3) owing to carrying out mentioning of weight by the rotation of rotary body and falling, so can carry out easily The adjustment that impacts the number of times increase and decrease in stipulated time can be when rotary body rotates 1 circle, makes weight Impacting number of times becomes a plurality ofly, and the rotary speed by roller also capable of regulating impacts number of times, thus, and the companion With speeding up of weight drop, can increase and impact number of times.
(4) owing to mention or the whereabouts weight by the rotation of rotary body, and do by the application of force of spring Be used for weight and it is fallen, so adjust easily the moment that impacts.
(5) because weight is applied the active force of spring, thus not only can be vertically, and can Impact force along inclined direction is provided.
(6) can give selectively impact force, revolving force and feed power, and it is big to carry out impact force Little increase and decrease, impact the adjustment of number of times, number of revolutions etc., thus also can be used for drilling machine, piling machine, Hydraulic breaker, geological mapping machine and penetrometer etc., versatility is fabulous. Such as, not only can Be used for boring (excavation), and adopt sampler, sampler barrel etc. by the front end at drilling rod, Be used for geological mapping, in addition, the application of force of the height of weight drop, the weight of weight and spring can be certainly By setting, so also can be used for penetration test.
Claims (4)
1. impact force generator, it is characterized in that it comprises: along the weight that guide peg is provided with being free to slide, this weight is provided with projection; This weight is applied the spring of active force; Rotary body is provided with fixed part, and the projection of fixing above-mentioned weight during this fixed part rotation makes this weight move from the direction of original position to the active force increase of above-mentioned spring, and removes said fixing at assigned position,
Rotation by rotary body fixes weight, and weight is moved along the direction of the active force increase of spring, and remove said fixing at assigned position, thus, weight moves to the original position direction by the active force of its gravity and spring, and utilize the superposed force of the active force of the gravity of weight and spring, impact and impacted body.
2. impact force generator, it is characterized in that it comprises: along the weight that guide peg is provided with being free to slide, this weight is provided with projection; This weight is applied the spring of active force; Rotary body is provided with fixed part, and the projection of fixing above-mentioned weight during this fixed part rotation makes this weight move from the direction of original position to the active force increase of above-mentioned spring, and removes said fixing at assigned position; Hammer anvil, this hammer anvil is impacted by weight,
On above-mentioned hammer anvil, by main shaft or directly by the spline combination, mainshaft gear is set with moving freely relatively, and the gear of CD-ROM drive motor and the engagement of this mainshaft gear are so that this mainshaft gear is rotatable, rotation by above-mentioned rotary body is weight fixedly, and weight is moved to the direction of the active force increase of spring, and remove said fixing at assigned position, thus, weight is by the active force of its gravity and spring, move to the original position direction, and utilize the superposed force of the active force of the gravity of weight and spring, impact hammer anvil.
3. impact force generator according to claim 1 and 2 is characterized in that above-mentioned weight is arranged in the guide cylinder with being free to slide.
4. impact force generator according to claim 1 and 2 is characterized in that, above-mentioned spring is the compression spring.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2003187535 | 2003-06-30 | ||
| JP2003187535A JP4479987B2 (en) | 2003-06-30 | 2003-06-30 | Stroke force generator |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1576468A CN1576468A (en) | 2005-02-09 |
| CN100335735C true CN100335735C (en) | 2007-09-05 |
Family
ID=34186356
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2004100617826A Expired - Lifetime CN100335735C (en) | 2003-06-30 | 2004-06-30 | Impact force generator |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP4479987B2 (en) |
| KR (1) | KR100556128B1 (en) |
| CN (1) | CN100335735C (en) |
Families Citing this family (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4672577B2 (en) * | 2006-03-09 | 2011-04-20 | 株式会社エムズ | Drilling device |
| JP5298360B2 (en) * | 2007-10-30 | 2013-09-25 | 株式会社エムズ | Drilling device |
| JP2018131738A (en) * | 2017-02-13 | 2018-08-23 | 株式会社エムズ | Percussion force generating device |
| CN106939765A (en) * | 2017-05-15 | 2017-07-11 | 侯丽娜 | A kind of multifunctional road guardrail hydraulic pile, the equipment of drilling machine |
| CN107700487A (en) * | 2017-09-07 | 2018-02-16 | 河海大学 | A kind of portable hydraulic piling machine mechanism |
| CN108375395B (en) * | 2018-03-22 | 2024-04-19 | 中国铁路设计集团有限公司 | Underground acquisition assembly for force and speed signals in standard penetration test |
| KR102282031B1 (en) * | 2020-08-10 | 2021-07-26 | 이천주 | Apparatus for compacting test piece |
| CN112482992B (en) * | 2020-11-27 | 2022-10-14 | 安庆市磐石岩土有限公司 | Surveying equipment and surveying method based on geological surveying |
| ES2954753T3 (en) * | 2020-12-07 | 2023-11-24 | Eurodrill Gmbh | Drilling drive device for a ground drilling rig |
| CN113356205B (en) * | 2021-05-16 | 2022-08-23 | 杭州忆风景建筑设计有限公司 | Piling equipment for shore protection timber pile |
| CN115182343B (en) * | 2022-07-12 | 2023-07-14 | 南京工业大学 | Piling system and construction method for building pile foundation construction |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032052A (en) * | 1987-09-12 | 1989-03-29 | 蔡崇晓 | Piling hammer |
| CN2051240U (en) * | 1989-07-11 | 1990-01-17 | 广州市越秀区利源基础工程科研所 | Low-loudness drop hammer for pile driver |
| US5379849A (en) * | 1991-04-10 | 1995-01-10 | Russell; James B. | Hydraulic ram assemblies |
| US5445227A (en) * | 1994-03-31 | 1995-08-29 | Heppner; Alden | Release mechanism for a hydraulic post driver |
| JPH10166278A (en) * | 1996-12-06 | 1998-06-23 | Hitachi Koki Co Ltd | Impact driver |
| CN2510543Y (en) * | 2001-11-11 | 2002-09-11 | 田宗民 | Electric-driven piling machine |
-
2003
- 2003-06-30 JP JP2003187535A patent/JP4479987B2/en not_active Expired - Fee Related
-
2004
- 2004-06-10 KR KR1020040042520A patent/KR100556128B1/en active IP Right Grant
- 2004-06-30 CN CNB2004100617826A patent/CN100335735C/en not_active Expired - Lifetime
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1032052A (en) * | 1987-09-12 | 1989-03-29 | 蔡崇晓 | Piling hammer |
| CN2051240U (en) * | 1989-07-11 | 1990-01-17 | 广州市越秀区利源基础工程科研所 | Low-loudness drop hammer for pile driver |
| US5379849A (en) * | 1991-04-10 | 1995-01-10 | Russell; James B. | Hydraulic ram assemblies |
| US5445227A (en) * | 1994-03-31 | 1995-08-29 | Heppner; Alden | Release mechanism for a hydraulic post driver |
| JPH10166278A (en) * | 1996-12-06 | 1998-06-23 | Hitachi Koki Co Ltd | Impact driver |
| CN2510543Y (en) * | 2001-11-11 | 2002-09-11 | 田宗民 | Electric-driven piling machine |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1576468A (en) | 2005-02-09 |
| KR20050005758A (en) | 2005-01-14 |
| JP2005023551A (en) | 2005-01-27 |
| KR100556128B1 (en) | 2006-03-03 |
| JP4479987B2 (en) | 2010-06-09 |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: EMS CORPORATION Free format text: FORMER OWNER: FUSO TRUCK AND BUS KOGYO CO., LTD. Effective date: 20121214 |
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| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20121214 Address after: Tokyo, Japan Patentee after: Kabushiki Kaisha EMS Address before: Shizuoka Patentee before: FUSO TRUCK AND BUS KOGYO Co.,Ltd. |
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| CX01 | Expiry of patent term |
Granted publication date: 20070905 |