CN100346932C - Pneumatic socket wrench - Google Patents
Pneumatic socket wrench Download PDFInfo
- Publication number
- CN100346932C CN100346932C CNB03156898XA CN03156898A CN100346932C CN 100346932 C CN100346932 C CN 100346932C CN B03156898X A CNB03156898X A CN B03156898XA CN 03156898 A CN03156898 A CN 03156898A CN 100346932 C CN100346932 C CN 100346932C
- Authority
- CN
- China
- Prior art keywords
- main body
- handle
- air
- reverse
- regulating handle
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B21/00—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose
- B25B21/02—Portable power-driven screw or nut setting or loosening tools; Attachments for drilling apparatus serving the same purpose with means for imparting impact to screwdriver blade or nut socket
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Spanners, Wrenches, And Screw Drivers And Accessories (AREA)
- Control Of Throttle Valves Provided In The Intake System Or In The Exhaust System (AREA)
Abstract
Provided is an air impact wrench in which normal/reverse rotations of an air impact wrench are switched with one reverse lever, torque after switching in the normal rotation direction is adjusted with a regulator lever, and a large scale air in the reverse rotation direction is supplied by only one step in a switched state after switching in the reverse direction. A body incorporates an air motor which has a backplate to support a motor shaft at a rear part of a cylinder of the air motor. A reverse valve for switching normal/reverse rotation directions of the air motor is arranged between the backplate and a body cap and a regulator valve to switch supply amount in the normal direction to a plural stages is also arranged between them. Switching of the reverse valve is carried out with a reverse lever arranged on an outer side surface of the body cap. The regulator valve is operated in a plural steps by a regulater lever positioned concentrically with the reverse lever on an outer side surface of the body cap.
Description
Technical field
The invention relates to the pneumatic impact wrench of assembling-disassembling bolt, nut etc.Particularly about the pneumatic impact wrench of dismounting doughnut easily.
More detailed is, the invention relates to a kind of pneumatic impact wrench, and it is positioned at the handle at the main body enclosure rear portion of box spanner by operation, can easily carry out the positive and negative spinning movement of box spanner and the size of regulating torque when just changeing.
Background technology
Pneumatic impact wrench is by being arranged on the air feed path in the handle portion, to air motor supply compressed air.So if collude trigger action, the open and close valve that then is arranged in this air feed path is opened, and compressed air flows into air motor, thereby produces rotary driving force.
Thereby the compressed air that flows into enters and makes the rotor rotation in the air motor, still, can then change the flow direction of air by be arranged near the reversal valve the trigger with hand operated and trigger differently, and the direction of rotation of air motor just can be switched to changes/reverse.
In addition, put in interior main body cover of establishing the back body of air motor, installing with finger is rotatable handle, utilizes this operation can change the size of torque in 1～4 grade of scope.
Like this, be separately positioned on different positions with the handle that the increase and decrease torque is used, so obviously operating personnel are must be in different positions reversing valve operated respectively and increase and decrease the handle that torque is used owing to switch the reversal valve that direction of rotation uses.According to this structure, not only make the structure of pneumatic impact wrench become complicated, and it is also pretty troublesome with the operation of increase and decrease torque to switch both forward and reverse directions.
So, known have, reversal valve and the handle used of increase and decrease torque are positioned at the inconvenience that brings different positions to be improved, by the handle of operation setting at the main body enclosure rear portion of pneumatic impact wrench, that just can carry out pneumatic impact wrench just changes that counter-rotating is switched and the size of torque when regulating forward or reverse.Promptly between the rear support seat that supports motor shaft and the main body enclosure, valve is being set, it can switch the positive and negative rotation of air motor, and the air demand of positive and negative two direction of rotation carried out multi-level switching, can this valve be switched by a handle that is arranged on main body enclosure lateral surface.Behind a handle switching forward or reverse, rotate the same handle and just can when forward or reverse, regulate torque multi-levelly.(with reference to patent documentation 1)
Patent documentation 1: utility model patent is registered communique No. 3078664
Summary of the invention
Problem of the present invention is to provide a kind of pneumatic impact wrench, the rotating operation of pneumatic impact wrench is what to be undertaken by a reversing handle that is arranged on main body enclosure rear portion, if reversing handle switches to positive veer, the size adjustment of torque is to be undertaken by the identical operation that is arranged on the regulating handle at main body enclosure rear portion with aforementioned reversing handle when then just changeing, perhaps switch to reverse directions with reversing handle, then switch under the state of back, can only supply the jumbo air of other reverse directions of one-level at this.
1) a kind of pneumatic impact wrench, it is wholely set main body and the handle portion that air feed path and exhaust channel are arranged in the bottom of aforementioned body, and the front end of this main body and back body are connected with the hammer cover and the main body enclosure respectively,
The rear portion that accommodates air motor, this air motor in the aforementioned body is installed with the rear branching holder of supporting motor shaft,
Between this rear branching holder and the aforementioned body enclosure, the rotating that aforementioned air motor is being set is switched with reversal valve and can be aligned the control valve that the air demand of veer is carried out multi-level switching,
The switching of aforementioned reversal valve can be undertaken by a reversing handle that is arranged on aforementioned body enclosure lateral surface, aforementioned control valve can carry out multi-level operation by the regulating handle that is provided with on main body enclosure lateral surface and aforementioned reversing handle concentric position
In addition, between the aforementioned body enclosure and the aforementioned air motor, reversal valve with solid central boss portion and the control valve with cylindrical shape central boss portion are being set, the two can relatively rotate,
The cylindrical shape central boss portion of aforementioned control valve is embedded in the central boss portion of aforementioned reversal valve,
One end of the central boss portion of aforementioned control valve combines with the regulating handle keeper, is fixing regulating handle on this regulating handle keeper,
Can switch and rotate and reverse by rotating aforementioned reversing handle, then can multiregion ground controlling torque size by rotating aforementioned regulating handle,
Aforementioned regulating handle keeper is positioned at aforementioned body enclosure side than aforementioned reversing handle.
2) in addition, aforementioned reversing handle is relative with the aforementioned body enclosure, can utilize combination by the steel ball of spring-loaded and recess to align transposition and put with backward position and position.
3) in addition, be installed in the regulating handle on the aforementioned regulating handle keeper, have in the main body enclosure one side and be used for limiting the minimum torque position of positive veer and the location division of torque capacity position.
4) in addition, steel ball that aforementioned regulating handle utilization is afterburning by the spring that is arranged on this handle top and the recess that is arranged on the main body enclosure one side can position on a plurality of level of torque adjustment position.
5) in addition, on the aforementioned reversal valve with rotate and reverse the air supply opening that big opening is being set on the corresponding position.
When 6) in addition, having the counter-rotating of big opening on the aforementioned control valve with circulation of air mouth and the corresponding a plurality of circulation of air mouths that just changeing of a plurality of torques when just changeing.
Description of drawings
Fig. 1 is the profile of pneumatic impact wrench of the present invention.
Fig. 2 is the exploded view of pneumatic impact wrench of the present invention.
Fig. 3 is the detail drawing of the main body enclosure.
Fig. 4 is the detail drawing of reversing handle.
Fig. 5 is the detail drawing of regulating handle keeper.
Fig. 6 is the detail drawing of regulating handle.
Fig. 7 is the detail drawing of reversal valve.
Fig. 8 is the detail drawing of control valve.
Fig. 9 is the detail drawing of rear branching holder.
Symbol description: 1 main body; 2 air motors; 3 output shafts; 4 percussion mechanisms; 5 anvil bodies; 6 handlebodys; 7 air feed paths; 8 exhaust channels; 9 triggers; 10 open and close valves; The 11 main body enclosures; 12 motor packing rings; 13 reversing handles; 14 regulating handle keepers; The 14a joint portion; 15 control valves; 15a central boss portion; 16 screws; 17 regulating handles; The 17a screw; The 17b hole; 17c is affectedly bashful portion; The 18a steel ball; The 18b groove; 19 reversal valves; 19a central boss portion; 20 rear branching holders.
The specific embodiment
With reference to accompanying drawing embodiments of the present invention are described.Fig. 1 is a profile of implementing pneumatic impact wrench of the present invention, and Fig. 2 is the exploded view of this figure, and Fig. 3～Fig. 9 is the detail drawing of component parts.Among Fig. 1 and Fig. 2, the 1st, the main body of pneumatic impact wrench, portion is installed with air motor 2 within it.The front portion of main body 1 is connecting hammer cover 1a, and this hammer cover inside is being provided with percussion mechanism 4, and it operates by the output shaft 3 of air motor 2.In addition, be supported with anvil body 5 at the front end of main body 1, it is by the revolving force of percussion mechanism 4 transmission air motors 2.The bottom of main body 1 is being wholely set handlebody 6, and its inside is being provided with air feed path 7 and exhaust channel 8, and wherein air feed path 7 is connected with air supply source by the flexible pipe (not shown), and exhaust channel 8 is communicated with air motor 2 one sides.
9 are arranged on the trigger on handlebody 6 tops, collude this trigger along the direction of Fig. 1 arrow a with finger, and by linkage, the elastic force that open and close valve 10 presses down antagonistic spring then can make the compressed air circulation.
The 11st, be installed in the main body enclosure of main body 1 rear end by motor packing ring 12, also set up adjusting device related to the present invention herein.The 13rd, the reversing handle of usefulness is switched in the rotating of air motor 2, and it is fixed on screw 16 on the end face of the 19a of central boss portion of reversal valve 19, and reversal valve 19 is positioned at the inboard (motor one side) of the main body enclosure 11.
The 17th, regulating handle, it is to install by the regulating handle keeper 14 of the periphery of the cylindrical shape central boss portion that is entrenched in control valve 15.Regulating handle keeper 14 is chimeric with the periphery, end of the 15a of central boss portion of control valve 15, but can not rotate relatively.It has a pair of joint portion 14a, and this joint portion 14a combines with the regulating handle 17 that makes circular plate type along diametric(al) by screw 17a.The 18th, the location is with steel ball (shown in Figure 2), in it is embedded in regulating handle 17 the outer hole 17b that places setting, utilize spring 18a along radial direction to applied force.The back of regulating handle 17 is being provided with is affectedly bashful the 17c of portion, and it is arranged on the diametric(al) of rotation.When the torque of adjusting when just changeing, pinch with pointing that it is promptly rotatable.
The 20th, cover the rear branching holder of the back of cylinder 2a, and cylinder 2a coats the rotor 2b that constitutes motor, by bearing 21, supporting shaft 2c.Air is delivered to motor 2 from the air channel of this rear branching holder, thereby makes the rotor rotation.
Below with reference to Fig. 3～Figure 10, above-mentioned each parts and dependency structure are described in detail.Fig. 3 is the detail drawing of the main body enclosure 11 at main body covered 1 rear portion.Shown in Fig. 3 (b), the lateral surface top of the main body enclosure 11 is marked with 1～4 numeral of expression level of torque when just changeing.Below this numeral, be embedded in the hole 17b that the top of the 17c of the portion of being affectedly bashful of regulating handle 17 (Fig. 6) is provided with, also be provided with the groove 18b (Fig. 3 (e)) of the position of rotation of secured adjusted handle 17 by the afterburning steel ball 18 (Fig. 2) of spring 18a (Fig. 2).11f is the central boss portion embedded hole of 15a of control valve 15.
11a and 11b are arranged on the location division of the regulating handle 17 on the inwall of circular depressions at the main body enclosure 11 rear portions.Say in more detail, be that regulating handle 17 is installed on a pair of installation portion 14a (Fig. 5) of regulating handle keeper 14 by hole 17d, if regulating handle keeper 14 contacts location division 11a and 11b, then locate the minimum torque position and the torque capacity position of the positive veer of regulating handle 17.(Fig. 3 a) is arranged on the air introducing port of the lower inside of the main body enclosure 11 to 11c, and it is communicated with air feed path 7 in the handlebody 6.Pass vertical hole 11d and leaked-in air is sent to motor by the circulation of air space between the main body enclosure 11 and the control valve 15 from introducing port 11c.
Aforementioned reversing handle 13 (Fig. 4), is fixed on the screw hole 19b through hole 13a with screw 16 (Fig. 2), and screw hole 19b is set on the 19a of central boss portion of aforementioned reversal valve 19 (Fig. 7).With the square concavo-convex joint portion 19c of reversing handle 13 by being arranged on the 19a of central boss portion be arranged on reversing handle on square concavo-convex joint portion 13b and combined.That is, make reversing handle 13 forward or reverse, then by this concavo-convex combination, reversal valve 19 is rotation simultaneously also.13c is arranged on the steel ball installing hole at the operating portion back side of reversing handle 13.Promptly, steel ball 13d is installed in this hole by spring 13e (Fig. 2), and it is interior (at this moment to fall into the recess 11e (Fig. 3 b) that is arranged on the aforementioned body enclosure 11 bottoms, reversing handle 13 contacts with the lower openings edge 11g of the circular depressions of the main body enclosure), so the position of positive veer of reversing handle 13 (F direction) or reverse directions (R direction) is fixed.
As previously mentioned, the 15a of central boss portion of the hollow of control valve 15 (Fig. 8) embeds in the aforementioned centre bore 14b of regulating handle keeper 14 (Fig. 5), make on the top of the 15a of central boss portion relatively and the protruding 15b (Fig. 8 c) that is provided with and in the centre bore 14b of keeper 14 relatively and the groove 14c combination that is provided with, both just actions integratedly like this.
The boss portion 19a of reversal valve 19 can embed with the relative rotation with the concentric centre bore 15c of the 15a of central boss portion of control valve 15 (Fig. 8) in, the end of the 15a of central boss portion is equipped with regulating handle keeper 14, and regulating handle 17 (Fig. 6) is installed on this regulating handle keeper 14 by screw 17a (Fig. 2) by a pair of installing hole 17d.By being fixedly mounted on the operation of the regulating handle 17 on the regulating handle keeper 14, control valve 15 multi-level ground (for example 4 ranks) rotate, thereby control the rotating torques of positive veer.
Shown in Fig. 8 (c), on the flange part 15d of control valve 15 (Fig. 8), be provided with air introducing port 15e when just changeing, 15f, 15g, 15h etc. apart from a side of its center line, if make regulating handle 17 go to be arranged on the aforementioned body enclosure 11 on the corresponding position of 1～4 symbol the time, then can increase and decrease the torque of positive veer.
The opposite side of aforementioned introducing port 15e～15h is provided with big opening 15i, makes regulating handle 17 when reverse directions is rotated, and then big opening 15i opens a large amount of air is entered, so just can be when unloading the bolt of automotive wheel etc. moment loosening.
Rear branching holder 20 (Fig. 9) is the parts of rearward end that cover the cylinder 2a of motor 2, it has the recess 20a that holds aforementioned bearings 21, air taking port 20c, 20 ' c are arranged on flange part 20b, and this air taking port 20c, 20 ' c communicate with the gas passage 20d of motor 2 one sides that are arranged on flange part symmetrically.By air taking port 20c and the gas passage 20d that communicates with it, the air when just changeing enters in the motor, and by air taking port 20 ' c and the gas passage 20 ' d that communicates with it, the air during counter-rotating enters.
Control method
Basic and above-mentioned structure, the set bolt operation describes during to the installation automotive wheel.
About counter-rotating
1) makes reversing handle 13 go to counter-rotating one side (R one side of the main body enclosure (Fig. 3 (b))), and reversing handle 13 is contacted with the lower openings edge 11g of R one side of the main body enclosure.So the steel ball 13d at the back side that is arranged on handle 13 is by spring 13e reinforcing, and fall in the recess 11e of the main body enclosure, thereby position.At this moment, also rotation simultaneously of reversal valve 19 along with reversing handle 13, like this, reverse turn operation ready.
2) in this state, collude trigger action 9, then air enters from the bottom of the main body enclosure 11, and enters in the air motor by the required path of reversal valve 19 and rear branching holder 20, thereby makes motor 2 reverse rotations.
About just changeing
1) rotates reversing handle 13 by the F direction and make it to contact, commutation handle 13 is positioned with the following edge of opening 11g of the main body enclosure.At this moment, reversing handle 13 is also by counter-rotation.
2) regulating handle 17 is positioned at the position of initial level of torque symbol " 1 ", and the front end of regulating handle keeper 14 contacts with the location division 11a of the main body enclosure 11 1 sides.
3) therefore, when making regulating handle 17 turn right position to required level of torque, this rotation is rotated control valve 15, thereby is got through the desired air feed path to the motor air feed by regulating handle keeper 14.
4) collude trigger action 9, air enters from the bottom of the main body enclosure 11, by the regulation path of control valve 15, and through the regulation path that just changes a side opening and rear branching holder 20 of reversal valve 19 and in the supply motor 2.
5) torque big as needs goes to the position of level of torque " 4 ", carries air just can obtain big torque.
1. by being installed in the reversing handle that main body cover puts, can just change the switching of " F " and counter-rotating " R " direction.In addition, have to the torque of rank 1 size in the reverse directions position by colluding trigger action.Otherwise being rotated in the forward is that reversing handle is rotated along " F " direction, and reversing handle keeps this state then, is positioned at regulating handle with the reversing handle concentric position by rotation, can carry out multi-level control.
2. like this, the rear portion of the main body enclosure has to switch forward and reverse handle and align changes the handle that carries out multi-level control.So with existing different, because reversing handle not in the position that separates, not only makes structure become simply, and can operate at a place of main body enclosure back, therefore operation is also simple.
3. during in particular as the replacing doughnut, in the loosening boss operation, need not carry out multi-level control, reverse turn operation once can be finished under big torque conditions, and therefore, the present application is especially effective.
Claims (6)
1. a pneumatic impact wrench is characterized in that, it is wholely set main body and the handle portion that air feed path and exhaust channel are arranged in the bottom of described main body, and the front end of this main body and back body are connected with the hammer cover and the main body enclosure respectively,
Described body matter is received the rear portion of air motor, this air motor the rear branching holder of supporting motor shaft is installed,
Between this rear branching holder and the described main body enclosure, the control valve that the air demand that is used for reversal valve that the rotating of described air motor is switched and can aligns veer is carried out multi-level switching is being set,
The switching of described reversal valve can be undertaken by a reversing handle that is arranged on described main body enclosure lateral surface, and described control valve can carry out multi-level operation by the regulating handle that is provided with on main body enclosure lateral surface and described reversing handle concentric position
Between the described main body enclosure and the described air motor, dispose rotatably with the reversal valve of solid central boss portion and the control valve of band cylindrical shape central boss portion,
The cylindrical shape central boss portion of described control valve is embedded in the central boss portion of described reversal valve,
One end of the central boss portion of described control valve combines with the regulating handle keeper, is fixing regulating handle on this regulating handle keeper,
Can switch and rotate and reverse by rotating described reversing handle, then can multi-level ground controlling torque size by rotating described regulating handle,
Described regulating handle keeper is positioned at the described main body enclosure (11) side than described reversing handle.
2. pneumatic impact wrench as claimed in claim 1 is characterized in that, described reversing handle is relative with the described main body enclosure, can utilize combination by the steel ball of spring-loaded and recess to align transposition and put with backward position and position.
3. pneumatic impact wrench as claimed in claim 1 is characterized in that, is installed in the regulating handle on the described regulating handle keeper, has in the main body enclosure one side to be used for limiting the minimum torque position of positive veer and the location division of torque capacity position.
4. pneumatic impact wrench as claimed in claim 1 is characterized in that, described regulating handle utilization is arranged on the spring at this handle top and afterburning steel ball and be arranged on the recess of the main body enclosure one side and can adjust on the position in a plurality of level of torque and position.
5. pneumatic impact wrench as claimed in claim 1 is characterized in that, on the described reversal valve with rotate and reverse corresponding position the air supply opening of big opening be set.
6. pneumatic impact wrench as claimed in claim 1 is characterized in that, when having the counter-rotating of big opening on the described control valve with circulation of air mouth and the corresponding a plurality of circulation of air mouths that just changeing of a plurality of torques when just changeing.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2002268170A JP3996475B2 (en) | 2002-09-13 | 2002-09-13 | Air impact wrench |
| JP2002268170 | 2002-09-13 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1494988A CN1494988A (en) | 2004-05-12 |
| CN100346932C true CN100346932C (en) | 2007-11-07 |
Family
ID=32024783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB03156898XA Expired - Fee Related CN100346932C (en) | 2002-09-13 | 2003-09-11 | Pneumatic socket wrench |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP3996475B2 (en) |
| CN (1) | CN100346932C (en) |
| DE (1) | DE10341796A1 (en) |
| TW (1) | TWI300376B (en) |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2006075920A (en) * | 2004-09-07 | 2006-03-23 | Kr Kogyo Kk | Pneumatic tool |
| JP4327061B2 (en) * | 2004-10-21 | 2009-09-09 | 株式会社マキタ | Tightening tool |
| EP1777041A1 (en) * | 2006-01-23 | 2007-04-25 | Mighty Seven International Co., Ltd. | Pneumatic tool |
| DE102007003031B4 (en) * | 2007-01-20 | 2011-01-13 | Chang, Hsin-Ho, Taiping | Air Motor |
| US8122907B2 (en) * | 2008-05-05 | 2012-02-28 | Ingersoll-Rand Company | Motor assembly for pneumatic tool |
| CN102476369A (en) * | 2010-11-23 | 2012-05-30 | 大里兴业有限公司 | Improved structure of pneumatic impact wrench |
| DE102010053677B4 (en) * | 2010-12-07 | 2012-08-02 | Storm Pneumatic Tool Co., Ltd. | Pneumatic impact wrenches |
| CN102601777A (en) * | 2011-01-24 | 2012-07-25 | 黄德伦 | Pneumatic tool |
| US8925646B2 (en) | 2011-02-23 | 2015-01-06 | Ingersoll-Rand Company | Right angle impact tool |
| US9592600B2 (en) | 2011-02-23 | 2017-03-14 | Ingersoll-Rand Company | Angle impact tools |
| TWI402144B (en) * | 2011-09-16 | 2013-07-21 | Pneumatic tool cylinder shunt structure | |
| CN102320454A (en) * | 2011-09-23 | 2012-01-18 | 大连精意科技有限公司 | Pneumatic roller |
| JP5760957B2 (en) | 2011-11-02 | 2015-08-12 | マックス株式会社 | Rotating tool |
| US9022888B2 (en) | 2013-03-12 | 2015-05-05 | Ingersoll-Rand Company | Angle impact tool |
| CN103522243B (en) * | 2013-10-22 | 2015-04-08 | 浙江荣鹏气动工具有限公司 | Pneumatic type torque wrench |
| TWI471201B (en) * | 2013-12-02 | 2015-02-01 | Chang Wei Ting | Pneumatic tool rotor and hammer block shell seat fixed structure |
| TWI477367B (en) * | 2014-03-06 | 2015-03-21 | Chang Wei Ting | Pneumatic tool commutation control structure |
| CN109153111B (en) * | 2016-06-03 | 2020-10-30 | 阿特拉斯·科普柯工业技术公司 | Pulse wrench with auxiliary power control device |
| CN109759982B (en) * | 2017-11-09 | 2021-01-15 | 合肥美的洗衣机有限公司 | Gun assembly |
| CN108838932A (en) * | 2018-09-14 | 2018-11-20 | 泰田集团有限公司 | Pneumatic wrench |
| CN110039484B (en) * | 2019-05-31 | 2024-01-12 | 沙洲职业工学院 | Bolt driving device capable of being rapidly switched in assembly and disassembly |
| CN111590503B (en) * | 2020-06-05 | 2021-10-22 | 郑玲佳 | Pneumatic impact wrench |
| CN114102500A (en) * | 2021-11-12 | 2022-03-01 | 东风柳州汽车有限公司 | Counter torque assembly and electric torque device |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4592430A (en) * | 1982-12-03 | 1986-06-03 | Compair Power Tools Limited | Fluid-pressure operated tools |
| US5346024A (en) * | 1992-06-22 | 1994-09-13 | Ingersoll-Rand Company | Tool construction |
| JPH08336762A (en) * | 1995-06-09 | 1996-12-24 | Hitachi Koki Co Ltd | Rotating direction switching lever for rotary pneumatic tool |
| CN2382514Y (en) * | 1999-07-19 | 2000-06-14 | 林震阳 | Speed regulater for pneumatic tools |
| JP3078664U (en) * | 2000-12-28 | 2001-07-10 | 株式会社信濃製作所 | Air impact wrench |
| CN1071173C (en) * | 1997-05-07 | 2001-09-19 | 芝加哥气动工具公司 | Pneumatic tool with reverse valve having overdrive |
| WO2002020221A2 (en) * | 2000-09-08 | 2002-03-14 | S. P. Air Kabusiki Kaisha | Pneumatic rotary tool |
-
2002
- 2002-09-13 JP JP2002268170A patent/JP3996475B2/en not_active Expired - Fee Related
-
2003
- 2003-09-10 DE DE2003141796 patent/DE10341796A1/en not_active Ceased
- 2003-09-11 CN CNB03156898XA patent/CN100346932C/en not_active Expired - Fee Related
- 2003-09-12 TW TW92125180A patent/TWI300376B/en not_active IP Right Cessation
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4592430A (en) * | 1982-12-03 | 1986-06-03 | Compair Power Tools Limited | Fluid-pressure operated tools |
| US5346024A (en) * | 1992-06-22 | 1994-09-13 | Ingersoll-Rand Company | Tool construction |
| JPH08336762A (en) * | 1995-06-09 | 1996-12-24 | Hitachi Koki Co Ltd | Rotating direction switching lever for rotary pneumatic tool |
| CN1071173C (en) * | 1997-05-07 | 2001-09-19 | 芝加哥气动工具公司 | Pneumatic tool with reverse valve having overdrive |
| CN2382514Y (en) * | 1999-07-19 | 2000-06-14 | 林震阳 | Speed regulater for pneumatic tools |
| WO2002020221A2 (en) * | 2000-09-08 | 2002-03-14 | S. P. Air Kabusiki Kaisha | Pneumatic rotary tool |
| JP3078664U (en) * | 2000-12-28 | 2001-07-10 | 株式会社信濃製作所 | Air impact wrench |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2004106070A (en) | 2004-04-08 |
| JP3996475B2 (en) | 2007-10-24 |
| TW200406288A (en) | 2004-05-01 |
| CN1494988A (en) | 2004-05-12 |
| DE10341796A1 (en) | 2004-04-15 |
| TWI300376B (en) | 2008-09-01 |
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