CN103523628A - Bidirectional machine-room-free speed limiter of single brake pressing-plate device - Google Patents
Bidirectional machine-room-free speed limiter of single brake pressing-plate device Download PDFInfo
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- CN103523628A CN103523628A CN201310526650.5A CN201310526650A CN103523628A CN 103523628 A CN103523628 A CN 103523628A CN 201310526650 A CN201310526650 A CN 201310526650A CN 103523628 A CN103523628 A CN 103523628A
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- ratchet
- rope sheave
- pawl
- hammer
- gravity drop
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Abstract
The invention discloses a bidirectional machine-room-free speed limiter of a single brake pressing-plate device. A rope wheel and a ratchet wheel are coaxially assembled on a base, a pawl is assembled on one side of the wheel face of the rope wheel in a rotating mode, a pawl torsion spring enabling a pawl steering ratchet wheel to be matched with a clamping groove of the ratchet wheel is arranged between the pawl and the rope wheel, a pawl positioning structure is further assembled on the wheel face of the rope wheel in a rotating mode, and a positioning torsion spring is arranged between the pawl positioning structure and the rope wheel. The jacking-pressing end of the pawl positioning structure is matched with the pawl in an elastic jacking-pressing mode, two gravity hammers are further assembled on the other side of the wheel face of the rope wheel in a rotating mode, the triggering portion of the pawl positioning structure is provided with a jacking head which is matched with a power hammer in a pushing-pressing mode when heads of the gravity hammers turn to the outer edge of the rope wheel in a protruding mode, and the pawl is provided with a lifting reset rod which abuts against and presses hammer handles of the gravity hammers to enable the pawl to be separated from the ratchet wheel and enable the pawl positioning structure and the pawl to be reset when the hammer handles of the gravity hammers turn to the outer edge of the rope wheel in a protruding mode. The pawl and the pawl positioning structure do not need manual resetting and can be used in an elevator without a machine room.
Description
Technical field
The present invention relates to a kind ofly for limiting the velocity limiter of elevator speed, relate in particular to a kind of two-way machine-room-less speed limiter of single brake press plate device.
Background technology
Velocity limiter is the critical component of elevator safety, of the prior art have a kind of such bidirectional speed limiter, and so-called bidirectional speed limiter is exactly the velocity limiter that can play a role at ascending for elevator with when descending, comprises base, on base, coaxial rotation is equipped with rope sheave and ratchet, is arranged with steel rope on rope sheave.The diameter of ratchet is less than the diameter of rope sheave, on the wheel face of rope sheave, be rotatably equipped with ratchet, between ratchet and rope sheave, be provided with torsion spring, torsion spring is to ratchet torsion, ratchet is rotated and there is all the time the trend of joining with the draw-in groove card of ratchet, at ratchet in free state, ratchet and ratchet can in clamping state, on the termination of ratchet, convex with a fixture block, two cell wall blocks that the both sides of fixture block can draw-in groove, prevent that ratchet from moving with respect to ratchet on cw and conter clockwise both direction.On rope sheave, also rotate and be provided with ratchet location structure, ratchet location structure has a top pressure side, this pressure side top, top is pressed on ratchet, make ratchet in decontroling the normal condition of ratchet, between ratchet location structure and rope sheave, there is torsion spring, torsion spring provides the power that compresses ratchet for ratchet location structure, make ratchet overcome the torsion spring power on it, the state that maintenance is separated with ratchet, on rope sheave, be also rotatably equipped with two gravity drop hammers, ratchet and ratchet location structure are in a side of rope sheave, and two gravity drop hammers are in an other side of rope sheave.Two gravity drop hammers set-up mode on rope sheave is centrosymmetric mode, the run-on point of gravity drop hammer is not in two ends, one end quality of gravity drop hammer is tup end more greatly, other end quality is less is hammer handle end, between the hammer handle end of a gravity drop hammer and rope sheave, be provided with compression-spring device, compression-spring device makes the tup end of gravity drop hammer be in the centre of rope sheave, between the tup portion of this gravity drop hammer and the hammer handle portion of another gravity drop hammer, be connected with connecting rod, the two ends of connecting rod are hinged with two gravity drop hammers respectively, when rope sheave normal rotation, under the effect of compression-spring device, the tup portion of two gravity drop hammers is all in the centre of rope sheave.When rope sheave overspeed operation, under the effect of centnifugal force, the spring force that two gravity drop hammers can overcome compression-spring device opens, and two tups can all can turn to the edge of rope sheave, and two hammer handles turn to the center of rope sheave.On ratchet location structure, there is the trigger unit through rope sheave, when the tup of gravity drop hammer turns to the outer rim of rope sheave, gravity drop hammer is pressed the top being convexly equipped with in trigger unit to top, the power that makes ratchet location structure overcome its torsion spring is rotated, ratchet location structure compresses ratchet, make ratchet continue to rotate to the direction away from ratchet, increase along with rotation distance, ratchet location structure can be decontroled ratchet, ratchet is stuck with ratchet under the effect of its torsion spring, when ratchet location structure is decontroled after ratchet, ratchet will be crossed ratchet location structure and keep off conversely ratchet location structure, ratchet location structure can not be resetted, at this moment, ratchet location structure pushes up under the effect of torsion spring power presses ratchet, make ratchet failure-free be in the state with ratchet buckle, in this state, if move ratchet, make it to the direction away from ratchet, rotate and continue to rotate, ratchet will be separated with ratchet location structure, ratchet location structure is return under the effect of its torsion spring, at this moment decontrol ratchet, ratchet location structure will be located with ratchet.At this moment, ratchet can keep off ratchet location structure conversely, and ratchet location structure can not be resetted, and at this moment, ratchet location structure pushes up under the effect of torsion spring power presses ratchet, makes ratchet failure-free be in the state with ratchet buckle.Rope sheave drives ratchet to rotate by ratchet.A side in rope sheave on base is provided with brake plate device, on the slipper of brake plate device, be provided with pull bar, one end of pull bar is located on slipper, the side that slipper is relative with rope sheave is medial surface, another side is lateral surface, in the arranged outside of slipper, has outside spring, and the top, one end of outside spring is pressed on the lateral surface of slipper, the other end of outside spring pushes up on the bulge loop on the termination that is pressed in pull bar, and other one end of pull bar is hinged on the wheel face of ratchet.Between slipper and ratchet, be also provided with connecting plate, one end of connecting plate is hinged on the side of slipper, and the other end is hinged on the wheel face of ratchet, and ratchet, connecting plate and slipper form crank-rocker structure.When rope sheave rotates toward a direction, after ratchet and ratchet are fastened togather, ratchet is followed rope sheave and is rotated, ratchet drives corresponding slipper to press to rope sheave by a pull bar when rotating, realize the braking of rope sheave, when rope sheave rotates toward another direction, after ratchet and ratchet are fastened togather, ratchet is followed rope sheave and is rotated, ratchet drives slipper to press to rope sheave by connecting plate when rotating, realize the braking of rope sheave, in order to prevent pull bar and connecting plate, when moving, mutually interfere, the hinged one end of pull bar and ratchet has elongated hole, corresponding hinge is through and in elongated hole, realizes the hinged of pull bar and ratchet, equally, the hinged one end of connecting plate and ratchet has elongated hole, corresponding hinge is through and in this elongated hole, realizes the hinged of connecting plate and ratchet.Like this, at pull bar, work while pulling slipper, corresponding hinge can slide in the slotted hole of connecting plate, can not affect the action of ratchet, same, at connecting plate, works while pulling slipper, and pull bar also can not be interfered the action of ratchet.Once rope sheave rotates hypervelocity, gravity drop hammer opens, and ratchet and pawl is fastened togather, when service personnel overhauls, even if by ratchet anyway, allow ratchet and ratchet when released state, ratchet still cannot return, need to manually overcome torsion spring power and rotate ratchet, make ratchet return and locate with ratchet location structure, in machine-roomless lift, workman cannot carry out the reset of ratchet, has caused this class velocity limiter in machine-roomless lift, to use.
Summary of the invention
The two-way machine-room-less speed limiter that the object of this invention is to provide a kind of single brake press plate device, to solve the problem that in prior art, velocity limiter cannot be used in machine-roomless lift.
In order to realize above object, the present invention adopts following technical scheme: a kind of two-way machine-room-less speed limiter of single brake press plate device, comprise base, on base, coaxial rotation is equipped with rope sheave and ratchet, a side in rope sheave on base is provided with brake plate device, between the slipper of brake plate device and ratchet, be also provided with connecting plate, one end of connecting plate is hinged on the side of slipper, the other end is hinged on the wheel face of ratchet, ratchet, connecting plate and slipper form crank-rocker structure, in one side of the wheel face of rope sheave, be rotatably equipped with ratchet, between ratchet and rope sheave, be provided with the ratchet torsion spring that the draw-in groove card of ratchet turning ratchet wheel and ratchet is joined, on the wheel face of rope sheave, be also rotatably equipped with ratchet location structure, between ratchet location structure and rope sheave, be provided with location torsion spring, the top pressure side of ratchet location structure and ratchet elastic top force fit, the opposite side of rope sheave wheel face is also rotatably equipped with two gravity drop hammers, in the trigger unit of ratchet location structure, convex with the top coordinating with power hammer pushing when tup at gravity drop hammer turns to the outer rim of rope sheave, when convexing with hammer handle at gravity drop hammer on described ratchet and turning to the wheel rim of rope sheave, press and make ratchet separated with ratchet and make the lifting reset lever of ratchet location structure and ratchet pawl reset with the hammer handle top of gravity drop hammer.
Described rope sheave is hub-like, and lifting reset lever is passed in the space between two spokes of rope sheave.
On the hammer handle of described gravity drop hammer, offer functional hole, described lifting reset lever is passed in functional hole, the hammer handle of gravity drop hammer is pressed with lifting reset masthead by hole wall and the pressure of the top between lifting reset lever of functional hole, and described functional hole has the part of dodging of dodging lifting reset lever.
On the hammer handle of described gravity drop hammer, offer functional hole, described lifting reset lever is passed in functional hole, on the hammer handle of gravity drop hammer, by being located in helicitic texture in functional hole, be fixed with top pinch roller, the hammer handle of gravity drop hammer is pressed with lifting reset masthead and is pressed by the top between top pinch roller and lifting reset lever, and described functional hole has the part of dodging of dodging lifting reset lever.
On ratchet of the present invention, convex with lifting reset lever, when the hammer handle of gravity drop hammer turns to the wheel rim of rope sheave, namely, when gravity drop hammer resets, the hammer handle of gravity drop hammer can push up presses lifting reset lever, ratchet is rotated to the direction away from ratchet, ratchet is separated with ratchet location structure, ratchet is answered and ratchet location structure resets, return normal condition, ratchet is in decontroling the state of ratchet, and ratchet of the present invention and ratchet location structure can automatically reset, do not need manual reset, can be used in machine-roomless lift.
Accompanying drawing explanation
Fig. 1 is the integral structure schematic diagram of the embodiment of the present invention;
Fig. 2 is rope sheave in Fig. 1 and the assembling schematic diagram of ratchet;
Fig. 3 is the left view of Fig. 2;
Fig. 4 is the right elevation of Fig. 2;
Fig. 5 is the exploded perspective view of the assembly drowing of rope sheave in Fig. 1 and ratchet.
The specific embodiment
A kind of embodiment of two-way machine-room-less speed limiter of single brake press plate device, in Fig. 1 ~ 5, so-called bidirectional speed limiter is exactly the velocity limiter that can play a role at ascending for elevator with when descending, and on its base 1, coaxial rotation is equipped with rope sheave 2 and ratchet 3, is arranged with steel rope 13 on rope sheave 2.The diameter of ratchet 3 is less than the diameter of rope sheave 2, on the wheel face of rope sheave 2, be rotatably equipped with ratchet 4, between ratchet 4 and rope sheave 2, be provided with torsion spring, torsion spring is to ratchet 4 torsion, ratchet 4 is rotated and there is all the time the trend of joining with the draw-in groove card of ratchet 3, at ratchet 4 in free state, ratchet 4 and the state of ratchet 3 meetings in clamping, on rope sheave 2, also rotate and be provided with ratchet location structure 6, ratchet location structure 6 has a top pressure side, this pressure side top, top is pressed on ratchet 4, make ratchet 4 in decontroling the normal condition of ratchet 3, between ratchet location structure 6 and rope sheave 2, there is torsion spring, torsion spring provides the power that compresses ratchet 4 for ratchet location structure 6, make ratchet 4 overcome the torsion spring power on it, the state that maintenance is separated with ratchet 3, on rope sheave 2, be also rotatably equipped with two gravity drop hammers 5, ratchet 4 and ratchet location structure 6 are in a side of rope sheave 2, two gravity drop hammers 5 are in an other side of rope sheave 2.Two gravity drop hammers 5 set-up mode on rope sheave 2 is centrosymmetric mode, the run-on point of gravity drop hammer 5 is not in two ends, one end quality of gravity drop hammer 5 is tup end more greatly, other end quality is less is hammer handle end, between the hammer handle end of a gravity drop hammer 5 and rope sheave 2, be provided with compression-spring device 11, compression-spring device 11 makes the tup end of gravity drop hammer 5 be in the centre of rope sheave 2, between the tup portion of this gravity drop hammer 5 and the hammer handle portion of another gravity drop hammer 5, be connected with connecting rod 10, the two ends of connecting rod 10 are hinged with two gravity drop hammers 5 respectively, when rope sheave 2 normal rotation, under the effect of compression-spring device 11, the tup portion of two gravity drop hammers 5 is all in the centre of rope sheave 2.When rope sheave 2 overspeed operation, under the effect of centnifugal force, the spring force that two gravity drop hammers 5 can overcome compression-spring device 11 opens, and two tups can all can turn to the edge of rope sheave 2, and two hammer handles turn to the center of rope sheave 2.On ratchet location structure 6, there is the trigger unit through rope sheave 2, when the tup of gravity drop hammer 5 turns to the outer rim of rope sheave 2, the top being convexly equipped with in trigger unit is pressed on 5 pairs of tops of gravity drop hammer, the power that makes ratchet location structure 6 overcome its torsion spring is rotated, ratchet location structure 6 compresses ratchet 4, make ratchet 4 continue to rotate to the direction away from ratchet 3, increase along with rotation distance, ratchet location structure 6 can be decontroled ratchet 4, ratchet 4 is stuck with ratchet 3 under the effect of its torsion spring, when ratchet location structure 6 is decontroled after ratchet 4, ratchet 4 will be crossed ratchet location structure 6 and keep off conversely ratchet location structure 6, ratchet location structure 6 can not be resetted, at this moment, ratchet location structure 6 pushes up under the effect of torsion spring power presses ratchet 4, make ratchet 4 failure-freies be in the state with ratchet 3 buckles.In this state, if the buckle between contact ratchet 4 and ratchet 3.Making ratchet 4 and ratchet location structure 6 reply top mutually presses, while making ratchet 4 remain on the state separated with ratchet 3, just can move ratchet 4 makes it to the direction away from ratchet 3, rotate and continue to rotate, ratchet 4 will be separated with ratchet location structure 6, ratchet location structure 6 is return under the effect of its torsion spring, at this moment decontrol ratchet 4, ratchet location structure 6 will be located with ratchet 4, and both are returned to initial condition.A side in rope sheave 2 on base 1 is provided with brake plate device, on the slipper of brake plate device, be provided with pull bar, one end of pull bar is located on slipper, the side that slipper is relative with rope sheave 2 is medial surface, another side is lateral surface, in the arranged outside of slipper, has outside spring, and the top, one end of outside spring is pressed on the lateral surface of slipper, the other end of outside spring pushes up on the bulge loop on the termination that is pressed in pull bar, and other one end of pull bar is hinged on the wheel face of ratchet 3.Between slipper and ratchet 3, be also provided with connecting plate 12, one end of connecting plate 12 is hinged on the side of slipper, and the other end is hinged on the wheel face of ratchet 3, and ratchet 3, connecting plate 12 form crank-rocker structure with slipper.When rope sheave 2 rotates toward a direction, after ratchet 4 and ratchet 3 are fastened togather, ratchet 3 is followed rope sheave 2 and is rotated, ratchet 3 drives corresponding slipper to press to rope sheave 2 by a pull bar when rotating, realize the braking of rope sheave 2, when rope sheave 2 rotates toward another direction, after ratchet 4 and ratchet 3 are fastened togather, ratchet 3 is followed rope sheave 2 and is rotated, ratchet 3 drives slipper to press to rope sheave 2 by connecting plate 12 when rotating, realize the braking of rope sheave 2, in order to prevent pull bar and connecting plate 12, when moving, mutually interfere, the hinged one end of pull bar and ratchet 3 has elongated hole, corresponding hinge is through and in elongated hole, realizes the hinged of pull bar and ratchet 3, equally, the hinged one end of connecting plate 12 and ratchet 3 has elongated hole, corresponding hinge is through and in this elongated hole, realizes the hinged of connecting plate 12 and ratchet 3.Like this, at pull bar, work while pulling slipper, corresponding hinge can slide in the slotted hole of connecting plate 12, can not affect the action of ratchet 3, same, at connecting plate 12, works while pulling slipper, and pull bar also can not be interfered the action of ratchet 3.
On ratchet 4, convex with lifting reset lever 7, lifting reset lever 7 is perpendicular to the wheel face of rope sheave 2, the rope sheave 2 is here wheel hub dress, just there iing wheel rim, have core wheel, between core wheel and wheel rim, by spoke, be linked to be an integral body, lifting reset lever 7 is by passing between two spokes, on the hammer handle of gravity drop hammer 5, offer functional hole 9, lifting reset lever 7 is passed after passing between two spokes in functional hole 9 again.On the hammer handle of gravity drop hammer 5, by being located in helicitic texture in functional hole 9, be fixed with top pinch roller 8, when gravity drop hammer 5 resets, namely when the hammer handle of gravity drop hammer 5 turns to the wheel rim of rope sheave 2, top pinch roller 8 can be pressed lifting reset lever 7 in top, namely drive ratchet 4 to make it to the direction away from ratchet 3, rotate and continue to rotate, ratchet 4 will be separated with ratchet location structure 6, ratchet location structure 6 is return under the effect of its torsion spring, at this moment decontrol ratchet 4, ratchet location structure 6 will be located with ratchet 4, both are returned to initial condition, realize automatically reseting of ratchet 4.
Because lifting reset lever 7 is through functional hole 9 on the hammer handle of gravity drop hammer 5, in motion process, lifting reset lever 7 can be with respect to the hammer handle motion of gravity drop hammer 5, so functional hole 9 need to have the part of dodging of dodging lifting reset lever 7, dodging part can be so that lifting reset lever 7 moves freely with respect to gravity drop hammer 5.
Also top pinch roller can be installed in other embodiments, directly by the hole wall top of functional hole, press lifting reset lever 7.
Claims (4)
1. the two-way machine-room-less speed limiter of a single brake press plate device, comprise base, on base, coaxial rotation is equipped with rope sheave and ratchet, a side in rope sheave on base is provided with brake plate device, between the slipper of brake plate device and ratchet, be also provided with connecting plate, one end of connecting plate is hinged on the side of slipper, the other end is hinged on the wheel face of ratchet, ratchet, connecting plate and slipper form crank-rocker structure, in one side of the wheel face of rope sheave, be rotatably equipped with ratchet, between ratchet and rope sheave, be provided with the ratchet torsion spring that the draw-in groove card of ratchet turning ratchet wheel and ratchet is joined, on the wheel face of rope sheave, be also rotatably equipped with ratchet location structure, between ratchet location structure and rope sheave, be provided with location torsion spring, the top pressure side of ratchet location structure and ratchet elastic top force fit, the opposite side of rope sheave wheel face is also rotatably equipped with two gravity drop hammers, in the trigger unit of ratchet location structure, convex with the top coordinating with power hammer pushing when tup at gravity drop hammer turns to the outer rim of rope sheave, it is characterized in that: when convexing with hammer handle at gravity drop hammer on described ratchet and turning to the wheel rim of rope sheave, press and make ratchet separated with ratchet and make the lifting reset lever of ratchet location structure and ratchet pawl reset with the hammer handle top of gravity drop hammer.
2. the two-way machine-room-less speed limiter of single brake press plate device according to claim 1, is characterized in that: described rope sheave is hub-like, and lifting reset lever is passed in the space between two spokes of rope sheave.
3. the two-way machine-room-less speed limiter of single brake press plate device according to claim 1 and 2, it is characterized in that: on the hammer handle of described gravity drop hammer, offer functional hole, described lifting reset lever is passed in functional hole, the hammer handle of gravity drop hammer is pressed with lifting reset masthead by hole wall and the pressure of the top between lifting reset lever of functional hole, and described functional hole has the part of dodging of dodging lifting reset lever.
4. the two-way machine-room-less speed limiter of single brake press plate device according to claim 1 and 2, it is characterized in that: on the hammer handle of described gravity drop hammer, offer functional hole, described lifting reset lever is passed in functional hole, on the hammer handle of gravity drop hammer, by being located in helicitic texture in functional hole, be fixed with top pinch roller, the hammer handle of gravity drop hammer is pressed with lifting reset masthead and is pressed by the top between top pinch roller and lifting reset lever, and described functional hole has the part of dodging of dodging lifting reset lever.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310526650.5A CN103523628A (en) | 2013-10-31 | 2013-10-31 | Bidirectional machine-room-free speed limiter of single brake pressing-plate device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310526650.5A CN103523628A (en) | 2013-10-31 | 2013-10-31 | Bidirectional machine-room-free speed limiter of single brake pressing-plate device |
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| CN103523628A true CN103523628A (en) | 2014-01-22 |
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| CN201310526650.5A Pending CN103523628A (en) | 2013-10-31 | 2013-10-31 | Bidirectional machine-room-free speed limiter of single brake pressing-plate device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104787638A (en) * | 2015-03-31 | 2015-07-22 | 西继迅达（许昌）电梯有限公司 | Bi-directional speed limiter with pawl capable of being reset automatically |
| US10442661B2 (en) | 2016-08-01 | 2019-10-15 | Otis Elevator Company | Governor of elevator |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US5065845A (en) * | 1990-09-13 | 1991-11-19 | Pearson David B | Speed governor safety device for stopping an elevator car |
| CN2680637Y (en) * | 2004-03-18 | 2005-02-23 | 河北东方机械厂 | Bidirectional elevator overspeed governor |
| CN101780910A (en) * | 2009-01-15 | 2010-07-21 | 上海摩顿电气有限公司 | Machine-room-less speed limiter for elevator |
| CN202558407U (en) * | 2012-05-14 | 2012-11-28 | 西继迅达（许昌）电梯有限公司 | Lift speed limiting device |
| CN203558661U (en) * | 2013-10-31 | 2014-04-23 | 西继迅达（许昌）电梯有限公司 | Two-way machine-room-less speed limiter with single brake pressure plate device |
-
2013
- 2013-10-31 CN CN201310526650.5A patent/CN103523628A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5065845A (en) * | 1990-09-13 | 1991-11-19 | Pearson David B | Speed governor safety device for stopping an elevator car |
| CN2680637Y (en) * | 2004-03-18 | 2005-02-23 | 河北东方机械厂 | Bidirectional elevator overspeed governor |
| CN101780910A (en) * | 2009-01-15 | 2010-07-21 | 上海摩顿电气有限公司 | Machine-room-less speed limiter for elevator |
| CN202558407U (en) * | 2012-05-14 | 2012-11-28 | 西继迅达（许昌）电梯有限公司 | Lift speed limiting device |
| CN203558661U (en) * | 2013-10-31 | 2014-04-23 | 西继迅达（许昌）电梯有限公司 | Two-way machine-room-less speed limiter with single brake pressure plate device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104787638A (en) * | 2015-03-31 | 2015-07-22 | 西继迅达（许昌）电梯有限公司 | Bi-directional speed limiter with pawl capable of being reset automatically |
| US10442661B2 (en) | 2016-08-01 | 2019-10-15 | Otis Elevator Company | Governor of elevator |
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Inventor after: Sun Hongliang Inventor after: Yuan Jiang Inventor after: Yi Xiaohong Inventor after: Kou Shandi Inventor after: Yue Wenkai Inventor before: Sun Hongliang Inventor before: Yi Xiaohong Inventor before: Kou Shandi Inventor before: Yue Wenkai |
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Free format text: CORRECT: INVENTOR; FROM: SUN HONGLIANG YI XIAOHONG KOU SHANDI YUE WENKAI TO: SUN HONGLIANG YUAN JIANG YI XIAOHONG KOU SHANDI YUE WENKAI |
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Application publication date: 20140122 |