US20080283258A1 - Striking device of a power tool - Google Patents
Striking device of a power tool Download PDFInfo
- Publication number
- US20080283258A1 US20080283258A1 US11/802,098 US80209807A US2008283258A1 US 20080283258 A1 US20080283258 A1 US 20080283258A1 US 80209807 A US80209807 A US 80209807A US 2008283258 A1 US2008283258 A1 US 2008283258A1
- Authority
- US
- United States
- Prior art keywords
- striking
- blocks
- restricting
- room
- transmission shaft
- 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
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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
Definitions
- This invention relates to a striking device of a power tool, particularly to one able to advance its strength for preventing it from damaged caused by deformation.
- a first conventional power tool possesses a striking set 10 in its front portion.
- the striking set 10 is composed of a striking room 11 having an empty zone 101 , two striking blocks 12 installed in the striking room 11 , two positioning pins 13 inserted through the wall of the striking room 11 , two sidewalls 121 of the striking blocks 12 , and a transmission shaft 14 installed through the empty zone 14 .
- the striking room 11 is driven to rotate by a power that is not shown in Figures.
- the transmission shaft 14 is provided with two restricting projections 141 spaced apart to be located at the upper and the lower end of the portion positioned in the striking room 11 , respectively confined in the striking blocks 12 .
- the front portion of the transmission shaft 14 positioned outside the striking room 11 is formed as a working head 142 for matching with diverse sockets to screw a bolt head or a nut.
- one of the positioning pins 13 linked with the striking room 11 is to hit at one of the striking blocks 12 to squeeze one of the restricting projections 141 , to enable the transmission shaft 14 to rotate clockwise or counterclockwise for tightening or loosening the bolt head or the nut.
- the striking force is concentrated to the positioning pins 13 while operating the striking set 10 .
- the working head 142 confronts resistance more and more, it is to inversely keep the restricting projections 141 , the striking blocks 12 , and the positioning pins 13 receives torsion more and more, prone to pose the positioning pins 13 tortured to get damaged. Moreover, it is a single pivot between the wall 111 and the positioning pins 13 .
- the part (A) of the wall 111 of the striking room 11 adjacent to the positioning pins 13 is unavoidably thin, apt to be broken under great torsion.
- the part (B) of the sidewall 121 of the striking blocks 12 adjacent to the positioning pins 13 has also a thin thickness, apt to be broken under great torsion.
- a second conventional power tool possesses a striking set 20 in its front portion.
- the striking set 20 is composed of a striking room 21 having an empty zone 201 , two striking blocks 22 installed in two sides of the striking room 21 , two positioning pins 23 inserted through pin holes 211 of the striking room 21 and through holes 222 of the striking blocks 22 , and a transmission shaft 24 provided with two restricting blocks 241 to be locked with the striking blocks 22 respectively.
- the striking set 20 when the striking set 20 is operated, one of the striking blocks 22 is to be hit to squeeze the restricting block 241 so that the transmission shaft 24 is activated to rotate clockwise or counterclockwise.
- the part (D), the thickness of a sidewall 221 of each of the striking blocks 22 abutting against the through hole 222 is relatively thin, enabling the positioning pin 23 to be broken in case of suffering excessive torsion.
- the part (E), the wall thickness of the striking room 21 adjacent to the pinhole 211 is also relatively thin to be easily broken under a larger torsion.
- the restricting blocks 241 are formed integral to possess a larger strength, the striking blocks 22 are to rotate only 180° to hit them again, relatively providing a small torsion to activate the transmission shaft to work with less efficiency.
- the objective of this invention is to offer a striking device of a power tool.
- the main characteristics of the invention are a striking room, two striking blocks and a transmission shaft.
- the striking room is provided with a pivotal restricting groove formed vertically at two sides of its inner wall respectively.
- a supporting surface is formed adjacent to two sides of each of the pivotal restricting grooves respectively, shaped as an arc.
- the striking blocks respectively have a projected pivot formed axially in their central portion.
- the projected pivot has its top and bottom pivotally connected to the striking room by pins pivotally inserted in pin holes of the upper and the lower wall of the striking room. Two sides of the projected pivot are extended with striking portions shaped as an arc.
- the transmission shaft is provided with two restricting blocks that have respectively a struck segment and a displacing segment located alternately.
- the other of the striking portions just leans on the supporting surface to activate the transmission shaft to rotate. Then the striking portion can pass through the corresponding displacing segment to carry out next strike when it moves away after striking.
- the striking blocks are integrally formed with the projected pivots, they possess a strong strength to keep them from deformed while correspondingly striking the struck segments of the transmission shaft.
- the striking blocks hit the transmission shaft with one of the striking portions, the other of the striking portions just contacts completely with the supporting surface, enabling the striking room to have a larger area to endure impact from the striking blocks, so as to prevent the striking room from damaged.
- the restricting blocks are formed integrally in the transmission shaft, respectively provided with the struck segment and the displacing segment located alternately, enabling the striking blocks to rotate for 360° before hitting the restricting blocks again, so that a rather strong torsion can be provided to activate the transmission shaft to work.
- FIG. 1 is an exploded perspective view of a first conventional striking device of a power tool
- FIG. 2 is a cross-sectional view of the first conventional striking device of a power tool
- FIG. 3 is an exploded perspective view of a second conventional striking device of a power tool
- FIG. 4 is a cross-sectional view of the second conventional striking device of a power tool
- FIG. 5 is a perspective view of a preferred embodiment of a striking device of a power tool in the present invention.
- FIG. 6 is an exploded perspective view of the preferred embodiment of a striking device of a power tool in the present invention.
- FIG. 7 is a cross-sectional view of the preferred embodiment of a striking device of a power tool in the present invention.
- FIG. 8 is a perspective view of the preferred embodiment of a striking device of a power tool in the present invention, showing it being working;
- FIG. 9 is a cross-sectional view of the preferred embodiment of a striking device of a power tool in the present invention, showing a striking block is striking on a transmission shaft;
- FIG. 10 is a cross-sectional view of the preferred embodiment of a striking device of a power tool in the present invention, showing the striking block is moving away the struck segment.
- FIGS. 5 ⁇ 7 show a preferred embodiment of a striking device of a power tool in the present invention.
- a striking set 3 is set in the front portion of the power tool, composed of a striking room 30 , two striking blocks 40 and 50 , and a transmission shaft 60 driven by a source (not shown).
- the striking room 30 is provided with an accommodating space 31 , an opening 32 bored at the center of its upper and lower wall 311 respectively, and a pivotal restricting groove 33 dug vertically in an inner surface of the wall 311 at its two sides respectively.
- Two sides of each of the pivotal restricting grooves 33 are respectively formed as a supporting surface 331 shaped as an arc.
- Bored on the upper and the lower wall 311 and based on the axial center of each of the pivotal restricting groove 33 are two corresponding pinholes 34 .
- a shift block 35 is pivotally fitted in the opening 32 of the lower wall 311 , engaged with a driving gear of a power (not shown in Figures) and provided with two engaging members 351 correspondingly located on its upper edge.
- the striking blocks 40 and 50 respectively include a projected pivot 41 and 51 formed integrally along the axial central portion.
- the projected pivots 41 and 51 are respectively provided with an engaging tail 411 and 511 formed at the bottom for engaging with the engaging member 351 , and two positioning holes 412 and 512 bored respectively at the top and the bottom of the projected pivot 41 and 51 to correspond to the pin holes 34 .
- the positioning holes 412 and 512 are bored partly in the projected pivots 41 and 51 , but just deep enough to let pins 42 and 52 be inserted via the pin holes 34 through therein, keeping the striking blocks 40 and 50 combined together between the upper and the lower pin holes 34 .
- the outer surface of the projected pivots 41 and 51 is shaped as a pivotal restricting surface 413 and 513 to engage pivotally with the pivotal restricting grooves 33 , so as to swing bias by pivoting on the pins 42 and 52 .
- the inner side of the projected pivots 41 and 51 is formed as inner walls 414 and 514 respectively with a rather broad thickness.
- Extended outward from two sides of each of the projected pivots 41 and 51 are striking portions 43 and 53 integrally shaped as an arc, for correspondingly matching with the supporting surfaces 331 .
- the transmission shaft 60 is provided with a pivotal engaging portion 61 formed in its intermediate portion with a larger diameter, for fitting in the opening 32 of upper wall 311 of the striking room 30 , and a lower shaft 62 extended downward from the bottom of the pivotal engaging portion 61 to be located inside the striking room 30 .
- the restricting blocks 63 and 64 are respectively provided with a struck segment 631 and 641 , and a displacing segment 632 and 642 , positioned up and down alternately.
- the struck segments 631 and 641 are shaped protrudent and the displacing segments 632 and 642 are shaped concave.
- the restricting blocks 63 and 64 are also respectively provided with a guiding corner 633 and 643 formed at an edge of the displacing segment 632 and 642 for the striking block 40 and 50 to hit the struck segment 631 and 641 and then pass through the displacing segment 632 and 642 to carry out next striking.
- the striking block 40 and 50 can easily move away the restricting blocks 63 and 64 after striking.
- a counterforce (P) fed back to the striking portions 43 and 53 from one of the struck segments 631 and 641 is able to be weakened as the other striking portions 43 and 53 just rest on the supporting surfaces 331 to scatter the counterforce (P) into smaller ones (P′) against the supporting surface 331 so that the striking room 30 may have a rather large surface to endure the impact from the striking blocks 40 and 50 , preventing the striking room 30 from damaged.
- the pins 42 and 52 can also be protected from being damaged because the counterforce (P) is almost absorbed by the supporting surfaces 331 .
- the striking blocks 40 and 50 are to rotate with a preset angle to enable the striking portions 43 and 53 to immediately move away from the struck segments 631 and 641 and pass through the displacing segments 632 and 642 to carry out next strike. And, by means of the shift block 35 , the striking blocks 40 and 50 can turn around another 360° to hit the struck segments 631 and 641 again with a larger torsion to make the transmission shaft 60 spin effectively.
- the invention has the following advantages as can be seen from the foresaid description.
- the striking blocks 40 and 50 are integrally formed, having the positioning holes 412 and 512 bored only partly in the projected pivots 41 and 51 so that the projected pivots can have a better strength.
- the striking blocks 40 and 50 hit the transmission shaft 60 with one of the striking portions 43 and 53 , the other of the striking portions 43 and 53 contact completely with the supporting surfaces 331 , able to help scatter the counterforce (P) generated while striking, preventing the striking room 30 from damaged.
- the pins 42 and 52 are not impacted at all, but used as pivots only.
- the restricting blocks 63 and 64 are formed integrally from the pivotal engaging portion 61 to the bottom of the transmission shaft 60 , able to enhance their strength not to be easily damaged. And, the struck segments 631 and 641 and the displacing segments 632 and 642 are formed integrally, located alternately so as to enable the striking blocks 40 and 50 to spin for 360° to hit the struck segments 631 and 642 again with an enlarged torsion, boosting the efficiency of the transmission shaft 60 .
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Percussive Tools And Related Accessories (AREA)
Abstract
A striking device of a power tool includes a striking room, two striking blocks and a transmission shaft. The striking room has a pivotal restricting groove at its two sides respectively, and two supporting surfaces formed adjacent to two sides of the pivotal restricting groove. Each striking block has a projected pivot formed axially, pivotally installed between two pin holes of the striking room via two pins. Two sides of the projected pivot are extended with striking portions, and the transmission shaft has two restricting blocks provided with a struck segment and a displacing segment. When one of the striking portion strikes one of the struck segments, the other of the striking portions just leans on the supporting surface to activate the transmission shaft to rotate. When the striking portion moves away after striking, it passes through the corresponding displacing segment to carry out next strike.
Description
- 1. Field of the invention
- This invention relates to a striking device of a power tool, particularly to one able to advance its strength for preventing it from damaged caused by deformation.
- 2. Description of the Prior Art
- As shown in
FIGS. 1 and 2 , a first conventional power tool possesses astriking set 10 in its front portion. Thestriking set 10 is composed of astriking room 11 having anempty zone 101, twostriking blocks 12 installed in thestriking room 11, twopositioning pins 13 inserted through the wall of thestriking room 11, twosidewalls 121 of thestriking blocks 12, and atransmission shaft 14 installed through theempty zone 14. Thestriking room 11 is driven to rotate by a power that is not shown in Figures. Thetransmission shaft 14 is provided with two restrictingprojections 141 spaced apart to be located at the upper and the lower end of the portion positioned in thestriking room 11, respectively confined in thestriking blocks 12. The front portion of thetransmission shaft 14 positioned outside thestriking room 11 is formed as a workinghead 142 for matching with diverse sockets to screw a bolt head or a nut. In using, when thestriking room 11 is driven by a power to spin clockwise or counterclockwise, one of thepositioning pins 13 linked with thestriking room 11 is to hit at one of thestriking blocks 12 to squeeze one of therestricting projections 141, to enable thetransmission shaft 14 to rotate clockwise or counterclockwise for tightening or loosening the bolt head or the nut. However, as we know, the striking force is concentrated to thepositioning pins 13 while operating thestriking set 10. When the workinghead 142 confronts resistance more and more, it is to inversely keep therestricting projections 141, thestriking blocks 12, and thepositioning pins 13 receives torsion more and more, prone to pose thepositioning pins 13 tortured to get damaged. Moreover, it is a single pivot between thewall 111 and thepositioning pins 13. As all components of thestriking set 10 have their own unchangeable sizes designed in a power tool, the part (A) of thewall 111 of thestriking room 11 adjacent to thepositioning pins 13 is unavoidably thin, apt to be broken under great torsion. And, likewise, the part (B) of thesidewall 121 of thestriking blocks 12 adjacent to thepositioning pins 13 has also a thin thickness, apt to be broken under great torsion. - In addition, as shown in
FIGS. 3 and 4 , a second conventional power tool possesses astriking set 20 in its front portion. Thestriking set 20 is composed of astriking room 21 having anempty zone 201, twostriking blocks 22 installed in two sides of thestriking room 21, twopositioning pins 23 inserted throughpin holes 211 of thestriking room 21 and throughholes 222 of thestriking blocks 22, and atransmission shaft 24 provided with tworestricting blocks 241 to be locked with thestriking blocks 22 respectively. Like the first conventional one, when thestriking set 20 is operated, one of thestriking blocks 22 is to be hit to squeeze therestricting block 241 so that thetransmission shaft 24 is activated to rotate clockwise or counterclockwise. However, being bored with thethrough hole 222 for being inserted with the positioningpin 23, the part (D), the thickness of asidewall 221 of each of thestriking blocks 22 abutting against the throughhole 222, is relatively thin, enabling the positioningpin 23 to be broken in case of suffering excessive torsion. And, the part (E), the wall thickness of thestriking room 21 adjacent to thepinhole 211, is also relatively thin to be easily broken under a larger torsion. Moreover, although the restrictingblocks 241 are formed integral to possess a larger strength, thestriking blocks 22 are to rotate only 180° to hit them again, relatively providing a small torsion to activate the transmission shaft to work with less efficiency. - The objective of this invention is to offer a striking device of a power tool.
- The main characteristics of the invention are a striking room, two striking blocks and a transmission shaft. The striking room is provided with a pivotal restricting groove formed vertically at two sides of its inner wall respectively. A supporting surface is formed adjacent to two sides of each of the pivotal restricting grooves respectively, shaped as an arc. The striking blocks respectively have a projected pivot formed axially in their central portion. The projected pivot has its top and bottom pivotally connected to the striking room by pins pivotally inserted in pin holes of the upper and the lower wall of the striking room. Two sides of the projected pivot are extended with striking portions shaped as an arc. The transmission shaft is provided with two restricting blocks that have respectively a struck segment and a displacing segment located alternately. So, when one of the striking portions strikes bias at one of the struck segments, the other of the striking portions just leans on the supporting surface to activate the transmission shaft to rotate. Then the striking portion can pass through the corresponding displacing segment to carry out next strike when it moves away after striking. As the striking blocks are integrally formed with the projected pivots, they possess a strong strength to keep them from deformed while correspondingly striking the struck segments of the transmission shaft. When the striking blocks hit the transmission shaft with one of the striking portions, the other of the striking portions just contacts completely with the supporting surface, enabling the striking room to have a larger area to endure impact from the striking blocks, so as to prevent the striking room from damaged. In addition, the restricting blocks are formed integrally in the transmission shaft, respectively provided with the struck segment and the displacing segment located alternately, enabling the striking blocks to rotate for 360° before hitting the restricting blocks again, so that a rather strong torsion can be provided to activate the transmission shaft to work.
- This invention is better understood by referring to the accompanying drawings, wherein:
-
FIG. 1 is an exploded perspective view of a first conventional striking device of a power tool; -
FIG. 2 is a cross-sectional view of the first conventional striking device of a power tool; -
FIG. 3 is an exploded perspective view of a second conventional striking device of a power tool; -
FIG. 4 is a cross-sectional view of the second conventional striking device of a power tool; -
FIG. 5 is a perspective view of a preferred embodiment of a striking device of a power tool in the present invention; -
FIG. 6 is an exploded perspective view of the preferred embodiment of a striking device of a power tool in the present invention; -
FIG. 7 is a cross-sectional view of the preferred embodiment of a striking device of a power tool in the present invention; -
FIG. 8 is a perspective view of the preferred embodiment of a striking device of a power tool in the present invention, showing it being working; -
FIG. 9 is a cross-sectional view of the preferred embodiment of a striking device of a power tool in the present invention, showing a striking block is striking on a transmission shaft; and -
FIG. 10 is a cross-sectional view of the preferred embodiment of a striking device of a power tool in the present invention, showing the striking block is moving away the struck segment. -
FIGS. 5˜7 show a preferred embodiment of a striking device of a power tool in the present invention. Astriking set 3 is set in the front portion of the power tool, composed of astriking room 30, twostriking blocks transmission shaft 60 driven by a source (not shown). - The
striking room 30 is provided with anaccommodating space 31, anopening 32 bored at the center of its upper andlower wall 311 respectively, and apivotal restricting groove 33 dug vertically in an inner surface of thewall 311 at its two sides respectively. Two sides of each of thepivotal restricting grooves 33 are respectively formed as a supportingsurface 331 shaped as an arc. Bored on the upper and thelower wall 311 and based on the axial center of each of thepivotal restricting groove 33 are twocorresponding pinholes 34. In addition, ashift block 35 is pivotally fitted in theopening 32 of thelower wall 311, engaged with a driving gear of a power (not shown in Figures) and provided with twoengaging members 351 correspondingly located on its upper edge. - The
striking blocks pivot pivots engaging tail engaging member 351, and twopositioning holes pivot pin holes 34. Thepositioning holes pivots pins pin holes 34 through therein, keeping thestriking blocks lower pin holes 34. The outer surface of the projectedpivots pivotal restricting surface pivotal restricting grooves 33, so as to swing bias by pivoting on thepins pivots inner walls pivots striking portions surfaces 331. When thestriking blocks striking room 30, thestriking portions - The
transmission shaft 60 is provided with a pivotalengaging portion 61 formed in its intermediate portion with a larger diameter, for fitting in the opening 32 ofupper wall 311 of thestriking room 30, and alower shaft 62 extended downward from the bottom of the pivotalengaging portion 61 to be located inside thestriking room 30. There are two restrictingblocks lower shaft 62 through to its bottom. The restricting blocks 63 and 64 are respectively provided with astruck segment displacing segment segments segments blocks corner segment striking block segment segment corners striking block blocks - In using, as shown in
FIGS. 8˜10 , when thestriking room 30 is activated by a power to whirl clockwise or counterclockwise, the striking blocks 40 and 50, pivoting on the projected pivots 41 and 51 fitted in the pivotal restrictinggrooves 33, are to correspondingly rotate with a preset angle, so that one of thestriking portions segments transmission shaft 60 to spin clockwise or counterclockwise. By the time, a counterforce (P) fed back to thestriking portions segments striking portions surfaces 331 to scatter the counterforce (P) into smaller ones (P′) against the supportingsurface 331 so that thestriking room 30 may have a rather large surface to endure the impact from the striking blocks 40 and 50, preventing thestriking room 30 from damaged. Of course, thepins striking portions segments segments shift block 35, the striking blocks 40 and 50 can turn around another 360° to hit the strucksegments transmission shaft 60 spin effectively. - The invention has the following advantages as can be seen from the foresaid description.
- 1. The striking blocks 40 and 50 are integrally formed, having the positioning holes 412 and 512 bored only partly in the projected pivots 41 and 51 so that the projected pivots can have a better strength. When the striking blocks 40 and 50 hit the
transmission shaft 60 with one of thestriking portions striking portions surfaces 331, able to help scatter the counterforce (P) generated while striking, preventing thestriking room 30 from damaged. And, as the counterforce (P) is totally scattered by the supportingsurfaces 331, thepins - 2. The restricting blocks 63 and 64 are formed integrally from the pivotal engaging
portion 61 to the bottom of thetransmission shaft 60, able to enhance their strength not to be easily damaged. And, the strucksegments segments segments transmission shaft 60. - While the preferred embodiment of the invention has been described above, it will be recognized and understood that various modifications may be made therein and the appended claims are intended to cover all such modifications that may fall within the spirit and scope of the invention.
Claims (3)
1. A striking device of a power tool, said power tool provided with a striking set installed in its front portion, said striking set comprising:
a striking room provided with an accommodating space, an opening bored at a center of its upper and lower wall respectively, and a pivotal restricting groove dug vertically in an inner surface of its two sidewall respectively, two supporting surfaces formed as an arc and next to two sides of each of said pivotal restricting grooves, two pin holes bored correspondingly in said upper and said lower wall and located at an axial center of each said pivotal restricting groove, a shift block pivotally fitted in said opening of said lower wall and provided with two engaging members located on a circumference of its upper edge;
two striking blocks respectively provided with a projected pivot formed integrally along their axial central portion, said projected pivots respectively provided with an engaging tail formed at a bottom for engaging with said engaging member, each said projected pivot having its top and bottom pivotally matched with said pin holes of said striking room by being fitted with pins, said projected pivot having its outer surface formed as a pivotal restricting surface to engage pivotally with the pivotal restricting grooves so as to swing bias by pivoting on said pins, a striking portion shaped as an arc to match with that of said supporting surface and extended from two sides of said projected pivot respectively, said striking portions located alternately without interfering with each other; and
a transmission shaft provided with a pivotal engaging portion formed in its intermediate portion with a larger diameter for fitting in said opening of said upper wall of said striking room, a lower shaft extended downward from a bottom of said pivotal engaging portion to be located inside said striking room, and two restricting blocks formed integrally to be located axially and symmetrically around said lower shaft through to its bottom, each said restricting block provided with a struck segment and a displacing segment that are positioned up and down alternately so that one of said striking portions of said striking blocks can rotate with a preset angle in said striking room to hit corresponding said struck segments and the other said striking portion just contacts with said supporting surface to activate said transmission shaft to whirl, said striking blocks then rotating with a preset angle to enable said striking portion of said striking blocks to move away from said struck segment and pass through said displacing segment to carry out next striking, said striking blocks activated by said displacing blocks to rotate with a preset angle so as to hit again said restricting block of said transmission shaft to keep said transmission shaft rotated.
2. The striking device of a power tool as claimed in claim 1 , wherein said struck segments are shaped protrudent and said displacing segments are shaped concave, so that said striking blocks can correspondingly strike said struck segments and then pass through said displacing segments to carry out next striking, each said displacing segment of said restricting blocks provided with a guiding corner that is used to keep said striking block move away from said restricting block easily, so that said striking block can be activated by said shift block to turn around with an angle of 360° to hit said restricting block of said transmission shaft again to drive said transmission shaft to rotate.
3. The striking device of a power tool as claimed in claim 1 , wherein said projected pivot of each said striking block possesses a broad inner thickness, said projected pivot has a positioning hole bored at its top and bottom to correspond to said pin holes of said striking room, said positioning holes are bored partly in said projected pivots and letting said pins insert from said pin holes through therein, so as to keep said striking blocks installed between said pin holes and inside said striking room.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/802,098 US20080283258A1 (en) | 2007-05-18 | 2007-05-18 | Striking device of a power tool |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/802,098 US20080283258A1 (en) | 2007-05-18 | 2007-05-18 | Striking device of a power tool |
Publications (1)
Publication Number | Publication Date |
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US20080283258A1 true US20080283258A1 (en) | 2008-11-20 |
Family
ID=40026359
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
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US11/802,098 Abandoned US20080283258A1 (en) | 2007-05-18 | 2007-05-18 | Striking device of a power tool |
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US (1) | US20080283258A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105672885A (en) * | 2016-03-25 | 2016-06-15 | 中国地质大学(北京) | Turbine power type double-action hydraulic oscillating-drag-reduced drilling jig |
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US3533479A (en) * | 1968-10-23 | 1970-10-13 | Sioux Tools Inc | Impact mechanism with improved hammer and hammer frame assembly therefor |
US5887666A (en) * | 1997-08-04 | 1999-03-30 | Chen; Kenneth | Impact wrench structure |
US5954141A (en) * | 1997-09-22 | 1999-09-21 | Li; Fen-Lien | Air driven motor for a tool |
US6024180A (en) * | 1998-02-12 | 2000-02-15 | Lin; Chen-Yang | Cage device for a pneumatically driven power tool |
US6186247B1 (en) * | 2000-06-01 | 2001-02-13 | Ta-Chin Wang | Drive assembly for an electric hand tool |
US6527061B2 (en) * | 2001-08-06 | 2003-03-04 | Hale Liao | Driving mechanism for pneumatic tools |
US7140282B1 (en) * | 2005-05-31 | 2006-11-28 | Hsin Ho Chang | Pneumatic wrench having reinforced strength |
US7182149B2 (en) * | 2004-08-11 | 2007-02-27 | Hsin Ho Chang | Pneumatic wrench having reinforced strength |
US7194939B2 (en) * | 2005-05-27 | 2007-03-27 | Hsin Ho Chang | Pneumatic wrench having reinforced strength |
-
2007
- 2007-05-18 US US11/802,098 patent/US20080283258A1/en not_active Abandoned
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3533479A (en) * | 1968-10-23 | 1970-10-13 | Sioux Tools Inc | Impact mechanism with improved hammer and hammer frame assembly therefor |
US5887666A (en) * | 1997-08-04 | 1999-03-30 | Chen; Kenneth | Impact wrench structure |
US5954141A (en) * | 1997-09-22 | 1999-09-21 | Li; Fen-Lien | Air driven motor for a tool |
US6024180A (en) * | 1998-02-12 | 2000-02-15 | Lin; Chen-Yang | Cage device for a pneumatically driven power tool |
US6186247B1 (en) * | 2000-06-01 | 2001-02-13 | Ta-Chin Wang | Drive assembly for an electric hand tool |
US6527061B2 (en) * | 2001-08-06 | 2003-03-04 | Hale Liao | Driving mechanism for pneumatic tools |
US7182149B2 (en) * | 2004-08-11 | 2007-02-27 | Hsin Ho Chang | Pneumatic wrench having reinforced strength |
US7194939B2 (en) * | 2005-05-27 | 2007-03-27 | Hsin Ho Chang | Pneumatic wrench having reinforced strength |
US7140282B1 (en) * | 2005-05-31 | 2006-11-28 | Hsin Ho Chang | Pneumatic wrench having reinforced strength |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105672885A (en) * | 2016-03-25 | 2016-06-15 | 中国地质大学(北京) | Turbine power type double-action hydraulic oscillating-drag-reduced drilling jig |
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