CN101912798A - Cam lever type large massive material crushing device - Google Patents

Cam lever type large massive material crushing device Download PDF

Info

Publication number
CN101912798A
CN101912798A CN 201010264688 CN201010264688A CN101912798A CN 101912798 A CN101912798 A CN 101912798A CN 201010264688 CN201010264688 CN 201010264688 CN 201010264688 A CN201010264688 A CN 201010264688A CN 101912798 A CN101912798 A CN 101912798A
Authority
CN
China
Prior art keywords
lever
cam
fixed
bearing
iii
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
CN 201010264688
Other languages
Chinese (zh)
Inventor
孙传祝
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shandong University of Technology
Original Assignee
Shandong University of Technology
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shandong University of Technology filed Critical Shandong University of Technology
Priority to CN 201010264688 priority Critical patent/CN101912798A/en
Publication of CN101912798A publication Critical patent/CN101912798A/en
Pending legal-status Critical Current

Links

Images

Landscapes

  • Crushing And Grinding (AREA)

Abstract

The invention provides a cam lever type large massive material crushing device. The bottom of a support I and the bottom of a support II are fixed on a base, and a bearing pedestal I and a bearing pedestal II are respectively fixed on the top of the support I and the top of the support II. Both ends of a shaft I with a cam in the middle is installed in a hole of the bearing pedestal I through a bearing I, and an input end is connected with an output end through a coupler and a driving device. The joint part of a long arm and a short arm of a lever is fixed in the middle of a shaft II installed in a hole of the bearing pedestal II through a bearing II. The long arm end of the lever is fixedly provided with a flange, a joint and a connecting ring, and both ends of a soft rope are connected with the joint and a striking hammer through the connecting ring. The crushing device is characterized in that a rolling body installed in a U-shaped slot at the short arm end of the lever through a pin shaft is engaged with the cam, and both ends of a spring II below the long arm part of the lever are respectively connected with the H-shaped bottom surface of the long arm part of the lever and the base through hanging rings. The invention provides a mechanical device for crushing super massive materials, the mechanical device has simple and compact structure, and the proportion of powdery materials after crushing is low.

Description

Cam lever type large massive material crushing device
Technical field
The invention provides a kind of cam lever type large massive material crushing device, specifically is to utilize the cam-and-driving weight that emery wheel, grinding tool industry are hit broken a kind of plant equipment with especially big block abrasive material and mine, building material industry with especially big block building stones.
Background technology
Various abrasive materials are as aluminium oxide, diamantane etc., are the main raw material(s)s of producing product such as emery wheel.These abrasive materials all are to make huge block semi-finished product through technologies such as oversinterings generally in process of production, and then through broken step by step, processing frustillatum finished product dispatches from the factory.
Since be the abrasive material of making product such as emery wheel, its hardness is very high certainly, and needed power is also very big certainly when therefore broken, and disintegrating apparatus commonly used has: single toggle jaw crusher, physical pendulum fine crusher, hammer mill and double-roll crusher or the like.Through the material after the three kinds of crusher in crushing in back, its granular size can reach the requirement of dispatching from the factory of product basically, and single toggle jaw crusher is respectively applied for the fragmentation of material each different phase from the bulk to the fritter according to the varying in size of charging aperture.
But even if large-scale single toggle jaw crusher, the material piece diameter that its charging aperture can allow generally also is no more than 500mm, and the block semi-finished product after the abrasive material sintering, and its material piece diameter even reaches 3000~5000mm generally all more than 1000mm.In addition, industries such as building materials such as cement are from stone material, the raw material of mining, and its size is often also big especially.Therefore, the semi-finished product abrasive material after the sintering or from the building stones of mining all can not directly enter common disintegrating machine and carry out fragmentation.
For addressing this problem, some enterprise once adopted crane to lift by crane a weight material was hit this method.But if weight is overweight easily pounds powdering with part abrasive material and building stones, price is had a greatly reduced quality; Weight is light, and then to hit cycle required when abrasive material and building stones are smashed more, and it is too low to adopt the lifting of crane repeated multiple times to hit production efficiency.Helpless, have to adopt the most original " manually swinging sledgehammer " this method, piece arrived fritter again during several meters big especially big smashed, till the common crusher in crushing of packing into.Whenever smash once, all will be through repeatedly hitting, production efficiency is too low, and working strength of workers is big especially.
At the problems referred to above, we have developed a kind of cam lever-type large-block material crushing machine, and have applied for national inventing patent, and application number is: 201010127680.5, and publication number is: CN101791583A.But, the crusher for massive materials that this patent relates to, the axial distance between cam and the lever short arm part is excessive, and easily bending phenomenon occurs for trundle during work; If want to shorten the axial distance between the two, then be subjected to the structural limitations of support, the distance between camshaft and these two axis of lever supporting axle can only be strengthened, thereby make structure become huge.
Take a broad view of industry present situations such as emery wheel, grinding tool and mine, building materials, be badly in need of a kind ofly being unlikely to material is pounded under the prerequisite of powdering, reduce cycle as far as possible, alleviate working strength of workers, and efficient, large massive material crushing device rational in infrastructure, simple compactness.
Summary of the invention
The purpose of this invention is to provide a kind of can addressing the above problem, and can alleviate labor strength, efficient, the crusher for massive materials of rational in infrastructure, simple compactness.Its technical scheme is:
Comprise base, drive unit, shaft coupling, cam mechanism and leverage, cam mechanism comprises cam, the axle I, the bearing I, the bearing block I, key, the support I above the base is fixed in cover and bottom, the bearing block I is by the bolt I, nut I and packing ring I are fixed in support I top, and each bearing block I endoporus is coaxial, the middle part is installed in the bearing block I hole by the bearing I by key and the axle I two ends that are set with cam, the input of axle I is connected with the output of drive unit by shaft coupling, leverage comprises lever, the axle II, the bearing II, the bearing block II, flange, joint, gentle rope, the support II above the base is fixed in peening hammer and bottom, the bearing block II is by the bolt I, nut I and packing ring I are fixed in support II top, and each bearing block II endoporus is coaxial, the lever of " worker " shaped sections is divided into length, short two lever arms, long, the both sides at the junction surface of short two lever arms are processed with circular hole after strengthening by the stiffener I, and be fixed in two ends and be installed in axle II middle part in the bearing block II hole by the bearing II, the long arm end of lever is fixed with flange, and by the bolt I, the nut I is fixedlyed connected with another flange that one side is fixed with joint and connecting ring with the packing ring I, after gentle rope passes spring I endoporus, two ends are connected with peening hammer with joint respectively by connecting ring, it is characterized in that: the both sides, end of lever short arm part are processed with circular hole after strengthening by the stiffener II, and have a U type groove perpendicular with round hole axial, after the end of thread of bearing pin passes the endoporus of the circular hole and the interior rolling element of U type groove of packing into, be fixed on the end of lever short arm part again by the nut II, the convex outer edge surface of the cylindrical of rolling element and cam is fitted, be positioned at the spring II below the long-armed part of lever, the two ends bottom surface by the long-armed part of link and lever " worker " shaped sections and base respectively are connected near a side of material.
Described cam lever type large massive material crushing device is by pack into the convex outer edge surface engagement of cylindrical and cam of the bearing III in the U type groove of lever short arm part end of bearing pin.
Described cam lever type large massive material crushing device is by pack into the convex outer edge surface engagement of cylindrical and cam of the roller in the U type groove of lever short arm part end of bearing pin.
Described cam lever type large massive material crushing device, long and short two lever arms of lever constitute one and are not equal to 180 ° angle.
Described cam lever type large massive material crushing device, long and short two lever arms of lever constitute an angle that equals 180 °.
Described cam lever type large massive material crushing device, drive unit comprises that motor, tape handler, reductor and bottom are fixed on the support III above the base, be fixed on motor above the base by bolt III, nut III and packing ring III, after the tape handler speed change, be connected with the input that is fixed on the reductor at support III top by bolt IV, nut IV and packing ring IV, the output of reductor is equipped with shaft coupling.
Described cam lever type large massive material crushing device, drive unit comprise that reducing motor and bottom are fixed on the support III above the base, and reducing motor is fixed on above the support III by bolt IV, nut IV and packing ring IV, and output is equipped with shaft coupling.
Described cam lever type large massive material crushing device, base is equipped with a plurality of self-alignment castors and supporting castor below by bolt III, nut III and packing ring III.
Its operation principle is: the bottom of support I and support II is separately fixed at above the base, bearing block I and bearing block II are fixed on support I and support II top by bolt I, nut I and packing ring I respectively, the middle part is installed in the bearing block I hole by the bearing I by key and the axle I two ends that are set with cam, and the input of axle I is connected with the output of drive unit by shaft coupling.The junction surface of both sides by long and short two arms of the strengthened lever of stiffener I is fixed in two ends and is installed in the middle part of the axle II in the bearing block II hole by the bearing II; The long arm end of lever is fixed with flange, and fixedlys connected with another flange that one side is fixed with joint and connecting ring by bolt I, nut I and packing ring I, and after gentle rope passed spring I endoporus, two ends were connected with peening hammer with joint respectively by connecting ring; The both sides, end of lever short arm part are processed with circular hole after strengthening by the stiffener II, and have the U type groove perpendicular with round hole axial, mesh by pack into the convex outer edge surface of cylindrical and cam of rolling element in the U type groove of bearing pin; Be positioned at the spring II below the long-armed part of lever, the two ends bottom surface by the long-armed part of link and lever " worker " shaped sections and base respectively are connected near a side of material.When drive unit by shaft coupling driving shaft I and after being installed in cam running on the I, cam just passes through the engagement of convex outer edge surface and rolling element cylindrical, the galianconism part of pulling force rear drive lever that overcomes the spring II is around axle II reciprocally swinging, long-armed part is then stirred gentle rope by flange, joint and connecting ring, and then the traction peening hammer is around axle II reciprocally swinging.
After the cam activation lever made peening hammer rise to peak, peening hammer moved downward with bigger acceleration under the acting in conjunction of self gravitation, lever long arm end gravity and spring II pulling force, touched behind the material promptly material to be implemented to hit.After the strike, peening hammer speed moment goes to zero.Because peening hammer and lever are not to be rigidly connected, therefore can alleviate the impulsive force of material greatly to equipment self.Also Just because of this, this breaker has very strong adaptive capacity to the height of material striking point.
The present invention is equipped with a plurality of self-alignment castors and supporting castor at base below by bolt III, nut III and packing ring III, so that implement to hit along the periphery of super massive materials.
The present invention has compared with prior art solved industries such as emery wheel, grinding tool and mine, building materials for the broken difficult problem of super massive materials, and is rational in infrastructure, simple compact, and the powdery materials after crushing ratio is low, and the blow efficiency height more helps alleviating working strength of workers.
Description of drawings
Fig. 1 is the structure principle chart of the embodiment of the invention;
Fig. 2 is a vertical view embodiment illustrated in fig. 1;
Fig. 3 is cam structure figure embodiment illustrated in fig. 1;
Fig. 4 is the lever embodiment illustrated in fig. 1 and the johning knot composition of bearing pin, bearing III and flange;
Fig. 5 is a B-B profile embodiment illustrated in fig. 4;
Fig. 6 is a C-C profile embodiment illustrated in fig. 4;
Fig. 7 is that D-D embodiment illustrated in fig. 4 analyses and observe the rotation enlarged drawing;
Fig. 8 is that E embodiment illustrated in fig. 4 is to zoomed-in view;
Fig. 9 is that the D-D of another embodiment shown in Figure 4 analyses and observe the rotation enlarged drawing;
Figure 10 is the johning knot composition of joint embodiment illustrated in fig. 1 and flange, connecting ring;
Figure 11 is the lever of another embodiment shown in Figure 1 and the johning knot composition of bearing pin, bearing III and flange;
Figure 12 is the structure principle chart of another embodiment of the present invention;
Figure 13 is a vertical view embodiment illustrated in fig. 12.
The specific embodiment
1, base 2, shaft coupling 3, cam 4, axle I 5, bearing I 6, bearing block I 7, key 8, cover 9, support I 10, bolt I 11, nut I 12, packing ring I 13, lever 14, axle II 15, bearing II 16, bearing block II 17, flange 18, joint 19, gentle rope 20, peening hammer 21, support II 22, stiffener I 23, connecting ring 24, spring I 25, stiffener II 26, U type groove 27, bearing pin 28, nut II 29, spring II 30, link 31, material 32, bearing III 33, roller 34, motor 35, tape handler 36, reductor 37, support III 38, bolt III 39, nut III 40, packing ring III 41, bolt IV 42, nut IV 43, packing ring IV 44, reducing motor 45, self-alignment castor 46, the supporting castor
In Fig. 1~8 and embodiment shown in Figure 10: the bottom of support III 37 is fixed on above the base 1, be fixed on motor 34 above the base 1 by bolt III 38, nut III 39 and packing ring III 40, after tape handler 35 speed changes, be connected with the input that is fixed on the reductor 36 at support III 37 tops by bolt IV 41, nut IV 42 and packing ring IV 43.The bottom of support I 9 and support II 21 is separately fixed at above the base 1, two bearing block I 6 and two bearing block II 16 are fixed on support I 9 and support II 21 tops by bolt I 10, nut I 11 and packing ring I 12 respectively, the middle part is installed in two bearing block I 6 holes by bearing I 5 by key 7 and cover 8 axle I 4 two ends that cam 3 is housed, and the input of axle I 4 is connected with the output of reductor 36 by shaft coupling 2.The lever 13 of " worker " shaped sections is divided into long and short two lever arms that formation one is not equal to 180 ° of angles, the both sides at long and short two arm junction surfaces are processed with circular hole after strengthening by stiffener I 22, and are fixed in two ends and are installed in axle II 14 middle parts in bearing block II 16 holes by bearing II 15; The both sides, end of lever 13 galianconism part are processed with circular hole after strengthening by stiffener II 25, and have a U type groove 26 perpendicular with round hole axial, mesh by pack into the convex outer edge surface of cylindrical and cam 3 of the bearing III 32 in the lever 13 galianconism part end U type grooves 26 of bearing pin 27; The long arm end of lever 13 is fixed with flange 17, and fixedly connected with another flange 17 that one side is fixed with joint 18 and connecting ring 23 by bolt I 10, nut I 11 and packing ring I 12, after gentle rope 19 passed spring I 24 endoporus, two ends were connected with peening hammer 20 with joint 18 respectively by connecting ring 23; Be positioned at the two ends of the spring II 29 below the lever 13 long-armed parts, be connected with the bottom surface of lever 13 long-armed part " worker " shaped sections and a side of base 1 close material 31 by link 30 respectively.Motor 34 is by tape handler 35 and reductor 36 speed changes, again after 4 runnings of shaft coupling 2 driving shaft I, can be by the convex outer edge surface of cam 3 and the engagement of bearing III 32 cylindricals, the pulling force that activation lever 13 overcomes spring II 29 drives peening hammer 20 around axle II 14 reciprocally swingings.Base 1 is equipped with two self-alignment castors 45 and two supporting castors 46 below by bolt III 38, nut III 39 and packing ring III 40, so that along the periphery of super massive materials 31 material 31 is implemented to hit.
In the embodiment shown in fig. 9: mesh by pack into the convex outer edge surface of cylindrical and cam 3 of the roller 33 in the lever 13 galianconism part end U type grooves 26 of bearing pin 27.
In the embodiment shown in fig. 11: long and short two lever arms of lever 13 constitute an angle that equals 180 °.
In Figure 12 and embodiment shown in Figure 13: the bottom of support III 37 is fixed on above the base 1, is fixed on the reducing motor 44 at support III 37 tops by bolt IV 41, nut IV 42 and packing ring IV 43, and its output shaft is connected by the input of shaft coupling 2 with an I 4.

Claims (8)

1. cam lever type large massive material crushing device, comprise base (1), drive unit, shaft coupling (2), cam mechanism and leverage, cam mechanism comprises cam (3), axle I (4), bearing I (5), bearing block I (6), key (7), the support I (9) above the base (1) is fixed in cover (8) and bottom, bearing block I (6) is by bolt I (10), nut I (11) and packing ring I (12) are fixed in support I (9) top, and each bearing block I (6) endoporus is coaxial, the middle part is installed in bearing block I (6) hole by bearing I (5) by axle I (4) two ends that key (7) and cover (8) are equipped with cam (3), the input of axle I (4) is connected with the output of drive unit by shaft coupling (2), leverage comprises lever (13), axle II (14), bearing II (15), bearing block II (16), flange (17), joint (18), gentle rope (19), the support II (21) above the base (1) is fixed in peening hammer (20) and bottom, bearing block II (16) is by bolt I (10), nut I (11) and packing ring I (12) are fixed in support II (21) top, and each bearing block II (16) endoporus is coaxial, the lever (13) of " worker " shaped sections is divided into length, short two lever arms, long, the both sides at the junction surface of short two lever arms are processed with circular hole after strengthening by stiffener I (22), and be fixed in two ends and be installed in axle II (14) middle part in bearing block II (16) hole by bearing II (15), the long arm end of lever (13) is fixed with flange (17), and by bolt I (10), nut I (11) is fixedlyed connected with another flange (17) that one side is fixed with joint (18) and connecting ring (23) with packing ring I (12), after gentle rope (19) passes spring I (24) endoporus, two ends are connected with peening hammer (20) with joint (18) respectively by connecting ring (23), it is characterized in that: the both sides, end of lever (13) galianconism part are processed with circular hole after strengthening by stiffener II (25), and have a U type groove (26) perpendicular with round hole axial, after the end of thread of bearing pin (27) passes the endoporus of the circular hole and the interior rolling element of U type groove (26) of packing into, be fixed on the end of lever (13) galianconism part again by nut II (28), the convex outer edge surface engagement of the cylindrical of rolling element and cam (3), be positioned at the spring II (29) below the long-armed part of lever (13), two ends are connected with the bottom surface of the long-armed part of lever (13) " worker " shaped sections and a side of the close material (31) of base (1) by link (30) respectively.
2. cam lever type large massive material crushing device as claimed in claim 1 is characterized in that: mesh by pack into the convex outer edge surface of cylindrical and cam (3) of the bearing III (32) in lever (13) the galianconism part end U type groove (26) of bearing pin (27).
3. cam lever type large massive material crushing device as claimed in claim 1 is characterized in that: mesh by pack into the convex outer edge surface of cylindrical and cam (3) of the roller (33) in lever (13) the galianconism part end U type groove (26) of bearing pin (27).
4. cam lever type large massive material crushing device as claimed in claim 1 is characterized in that: long and short two lever arms of lever (13) constitute one and are not equal to 180 ° angle.
5. cam lever type large massive material crushing device as claimed in claim 1 is characterized in that: long and short two lever arms of lever (13) constitute an angle that equals 180 °.
6. cam lever type large massive material crushing device as claimed in claim 1, it is characterized in that: drive unit comprises motor (34), tape handler (35), reductor (36) and bottom are fixed on the support III (37) above the base (1), by bolt III (38), nut III (39) and packing ring III (40) are fixed on the motor (34) above the base (1), after tape handler (35) speed change, with by bolt IV (41), nut IV (42) is connected with the input that packing ring IV (43) is fixed on the reductor (36) at support III (37) top, and the output of reductor (36) is equipped with shaft coupling (2).
7. cam lever type large massive material crushing device as claimed in claim 1, it is characterized in that: drive unit comprises that reducing motor (44) and bottom are fixed on the support III (37) above the base (1), reducing motor (44) is fixed on above the support III (37) by bolt IV (41), nut IV (42) and packing ring IV (43), and output is equipped with shaft coupling (2).
8. cam lever type large massive material crushing device as claimed in claim 1 is characterized in that: base (1) is equipped with a plurality of self-alignment castors (45) and supporting castor (46) below by bolt III (38), nut III (39) and packing ring III (40).
CN 201010264688 2010-08-18 2010-08-18 Cam lever type large massive material crushing device Pending CN101912798A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 201010264688 CN101912798A (en) 2010-08-18 2010-08-18 Cam lever type large massive material crushing device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 201010264688 CN101912798A (en) 2010-08-18 2010-08-18 Cam lever type large massive material crushing device

Publications (1)

Publication Number Publication Date
CN101912798A true CN101912798A (en) 2010-12-15

Family

ID=43320521

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 201010264688 Pending CN101912798A (en) 2010-08-18 2010-08-18 Cam lever type large massive material crushing device

Country Status (1)

Country Link
CN (1) CN101912798A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102513178A (en) * 2011-12-22 2012-06-27 成都市新力设备制造有限责任公司 Eccentric shaft self-circulation hammer crusher
CN103418474A (en) * 2013-07-31 2013-12-04 周其锋 Simple semi-automatic stone crusher
CN106732889A (en) * 2016-12-23 2017-05-31 刘春燕 A kind of agriculture big data preliminary breaker comprehensively of caking fertilizer

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1050740A1 (en) * 1981-05-04 1983-10-30 Предприятие П/Я М-5304 Unit for crushing material
CN200939394Y (en) * 2006-06-16 2007-08-29 周大青 Electric medicine masher
CN101791583A (en) * 2010-02-22 2010-08-04 山东理工大学 Cam lever-type large-block material crushing machine

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SU1050740A1 (en) * 1981-05-04 1983-10-30 Предприятие П/Я М-5304 Unit for crushing material
CN200939394Y (en) * 2006-06-16 2007-08-29 周大青 Electric medicine masher
CN101791583A (en) * 2010-02-22 2010-08-04 山东理工大学 Cam lever-type large-block material crushing machine

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102513178A (en) * 2011-12-22 2012-06-27 成都市新力设备制造有限责任公司 Eccentric shaft self-circulation hammer crusher
CN103418474A (en) * 2013-07-31 2013-12-04 周其锋 Simple semi-automatic stone crusher
CN106732889A (en) * 2016-12-23 2017-05-31 刘春燕 A kind of agriculture big data preliminary breaker comprehensively of caking fertilizer

Similar Documents

Publication Publication Date Title
CN202622797U (en) Automatic manipulator
CN110354953A (en) A kind of high-efficiency hybrid aggregate reclaiming machine
CN101912798A (en) Cam lever type large massive material crushing device
CN101791583B (en) Cam lever-type large-block material crushing machine
CN205392617U (en) Binocular vibrator
CN205761467U (en) The omnidirectional planetary ball mill that a kind of reducing motor is direct-connected
CN101745445B (en) Hammer type massive material crusher
CN219849882U (en) Crusher for processing high-purity arsenic raw materials
CN104338577B (en) Novel sand making machine
CN101780427B (en) Annular crusher for massive materials
CN207375660U (en) Pneumatic lifting cantilever
CN105032574A (en) Vertical squeezing crusher
CN102284320A (en) Vertical grinding roller sand making machine
CN201445972U (en) Double roller type sand maker
CN210449376U (en) Vertical shaft type crusher with differential function
CN105597882A (en) All-dimensional planetary ball mill with directly-connected speed reduction motors
CN110302882A (en) Hammer type sand production machine is used in a kind of crushing of rare earth
CN207137994U (en) A kind of Chinese medicine jaw crusher
CN208356875U (en) A kind of mineral processing production ore Hubei Province formula grinding device
CN215356136U (en) Blank casting device for producing steel balls of ball mill
CN211539352U (en) Braking device of clamping rod hammer
CN209254888U (en) A kind of efficient ball-milling device for mineral processing
CN204672340U (en) For the bracing or strutting arrangement that medium-speed coal mill roller is removed
CN210449375U (en) Multistage crusher rotor with differential function
CN216296554U (en) High-efficient ball mill of degree of automation for mining processing engineering

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20101215