US20060207238A1 - Spinning method without a flyer as well as an apparatus with a draft system - Google Patents

Spinning method without a flyer as well as an apparatus with a draft system Download PDF

Info

Publication number
US20060207238A1
US20060207238A1 US11/365,761 US36576106A US2006207238A1 US 20060207238 A1 US20060207238 A1 US 20060207238A1 US 36576106 A US36576106 A US 36576106A US 2006207238 A1 US2006207238 A1 US 2006207238A1
Authority
US
United States
Prior art keywords
sliver
draft system
spool
duct
winding
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
Application number
US11/365,761
Other languages
English (en)
Inventor
Chokri Cherif
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.)
Rieter Ingolstadt Spinnereimaschinenbau AG
Original Assignee
Rieter Ingolstadt Spinnereimaschinenbau AG
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 Rieter Ingolstadt Spinnereimaschinenbau AG filed Critical Rieter Ingolstadt Spinnereimaschinenbau AG
Assigned to RIETER INGOLSTADT SPINNEREIMASCHINENBAU AG reassignment RIETER INGOLSTADT SPINNEREIMASCHINENBAU AG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: CHERIF, CHOKRI
Publication of US20060207238A1 publication Critical patent/US20060207238A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H7/00—Spinning or twisting arrangements
    • D01H7/02—Spinning or twisting arrangements for imparting permanent twist
    • D01H7/90—Arrangements with two or more spinning or twisting devices of different types in combination
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/005—Arrangements for feeding or conveying the slivers to the drafting machine

Definitions

  • the invention concerns a spinning method without recourse to a flyer, for the direct spinning of sliver and also concerns an apparatus with a draft system in accord with the principal concepts of the independent claims.
  • a flyer by means of which a fiber with a band weight, for example, of 5 ktex is drawn to a pre-yarn with a roving of 200-1200 tex and wound onto a spool, in order that this can then be delivered to a ring spinning machine.
  • the central concept of the invention is to be found in that, in the first draft system a thin band is produced, that subsequently, is reinforced with a protective winding and thereafter, in a second draft system can be drawn at high tension.
  • one or more fiber bands are drawn in the first draft system to a thin sliver, which lies below the usual sliver band weight at the output point of a draw frame. It is indeed of common knowledge, by means of the known draw frames, to draw one or more slivers down to 1.5 ktex. The resulting sliver, in this case however, is not provided with an effective protective winding, if one ignores the small protective winding (in the area of one winding per meter fiber), which, is obtained by means of the combination of a rotating fiber duct and an oppositely disposed, essentially slower rotating, round storage can.
  • the sliver produced from the first draft system has a band weight of less than 2.5 ktex and in an advantageous manner, less than 1.3 ktex.
  • the band weight from the first draft system can lie at less than 0.8 ktex.
  • Such bands can be made by a draw frame, in that one or more fibers can be conducted to this draft system.
  • a single sliver brought to the draft system can have a density of 5 ktex, which has been subjected in the said draft system to a pull of 6, in order to obtain a sliver with a fineness of less than 1 ktex.
  • four slivers to be doubled with respective weights of 5 ktex and a draw of 20 would make up a single sliver with a fineness of 1 ktex.
  • the invented apparatus characterizes itself, in addition to the thinness of the sliver to be produced, in that the means for the production of a protective winding is so designed, that the number of protective winding turns per meter of produced sliver is greater than five, however, it is advantageous if the said number is greater than ten.
  • the invented method permits, that the delivery speed of the sliver produced from the first draft system can be selected to be greater than 250 m/min, since the said protective winding causes the band to be self reinforced.
  • the second draft system which is part of a ring spinning station can be so designed and operated, that it has a draft of more than 40, advantageously more than 70 and highly recommended at more than 100.
  • the storage of the drawn sliver, which has been made in the first draft system, is conveniently carried out in cans.
  • the drawn sliver can be wound on a spool, which would be located following the spinning machine, especially if the machine is a ring spinning machine.
  • the spool for the said winding of the drawn sliver is arranged with a horizontally aligned spool axis. This offers the advantage of traversing the spool back and forth in a horizontal direction, in order, for example, to achieve either a crossed or a parallel winding of the sliver on the spool body.
  • the traverse operation is carried out by a component of the storage organ, which, in this case, is designed as a sliver duct.
  • a component of the storage organ which, in this case, is designed as a sliver duct.
  • that end of the sliver duct, which is proximal to the spool runs back and forth along the spool body.
  • That end of the sliver duct, which is distant from the spool can be made stationary, whereby the sliver duct then moves in the manner of a pendulum.
  • the said sliver duct during its pendulous motion, can also be set into rotary motion, in order to create a protective winding over the sliver on the spool.
  • the spool in accord with an alternative embodiment, can be stationarily anchored, while the discharge end of the said sliver duct traverses perpendicularly along the vertical spool body.
  • At least one nozzle could be installed at the outlet of the first draft system, which, for example, would be designed as a pneumatically operated, compaction nozzle.
  • the compaction nozzle can be provided between the first draft system and the calender rolls, which follow immediately thereafter. Alternatively the compaction nozzle can be placed downstream from the said calender rolls.
  • the said compaction nozzle has a pass-through duct for the sliver.
  • at least one penetrative boring opens eccentrically into this through passage, which boring runs advisedly angularly, that is, in an inclined manner, to the said through passage.
  • a rotation of the sliver about its longitudinal axis is created in the said through passage, which effects the desired protective winding of the sliver.
  • the apparatus for the making of the protective winding can include a small tube, which rotates about its longitudinal axis, either alternately in a clockwise or counterclockwise directions or turns in only one direction.
  • components for providing a protective winding which could include supporting wire helixes, wire screws, rings, flat rotor, rods or the like.
  • means for bringing about the production of the protective winding includes a sliver duct, which is principally known for its use in the placement of sliver in storage cans.
  • a sliver duct usually coacts in combination with a coiler and throws a wide curve, in order to lay down the sliver in accessible loops within the cans.
  • the sliver produced in the first draft system on a horizontally mounted spool concerns a preferred embodiment, which is generally installed to attain the protection winding, wherein the inlet and the outlet of the sliver duct are placed in a common, straight line.
  • the sliver duct in this horizontal spool placement is advantageously rotated about this line, which thus creates an axis of rotation, whereby the desired protective winding is achieved.
  • the sliver duct inlet and the sliver duct outlet advantageously are disposed opposite to one another.
  • FIG. 1 a schematic presentation of the production line of cotton flocks to a yarn
  • FIG. 2 a schematic profile view of the mechanics of a draw frame
  • FIG. 3 a draft system with a traversing, horizontal cross winding spool
  • FIG. 4 a draft system with a horizontal, parallel winding spool and a traversing sliver duct
  • FIG. 5 a draft system with a vertical cross winding spool
  • FIG. 6 a , 6 b , 6 c different means for the achievement of the protective winding of the sliver at the outlet of the draft system in accord with FIGS. 2 to 4 .
  • FIG. 1 a schematic sequence of spinning machines is presented.
  • the feed hopper 105 of a carding machine 100 is filled with cotton fiber, from which the machine produces by carding in a known manner, a fiber band FB.
  • This fiber band FB can be stored in a can 110 and then transferred to the adjacent draw frame 1 (as is to be seen in FIG. 1 ).
  • the now carded fiber band FB can be run continuously directly to the said draw frame 1 .
  • the draw frame 1 produces, from one or more fiber bands FB (only a single fiber band FB is shown) only one sliver FB′, which, in accord with embodiment of FIG.
  • the draw frame 1 is followed by a ring spinning machine 200 with a multiplicity of belt connected draft systems 204 (only one is shown) which, respectively, are fed by the said spool 70 with the now sliver FB′.
  • the ring spinning machine produces from this sliver FB′ a yarn G, which, likewise, is wound on a spool 290 .
  • no flyer is interposed between the draft system 1 and the ring spinning machine 200 .
  • a draw frame 1 is detailed in FIG. 2 in a schematic profile view.
  • several, fiber bands FB which are not protectively wound, (these are shown here from above) of the draw frame 1 are laid side-by-side together.
  • a funnel 12 At the entry to the draw frame 1 is arranged a funnel 12 , which compacts the fiber bands FB, the output thereof being designated as sliver FB′.
  • Alternatively, other compacting means can be used.
  • the now compacted sliver FB′ now consisting of the converted several fiber bands FB, is conducted into a draft system 4 , which forms the basic core of the draw frame 1 .
  • the draft system 4 possesses, in the present instance, three draw organs, namely, roll pairs, between which the actual draw occurs. These are the entry pair 5 a , 5 b , the midpositioned roll pair 6 a , 6 b and the output or delivery pair 7 a , 7 b , all of which turn themselves in the given sequence with increasing circumferential speeds. Because of these differing circumferential speeds of the roll pairs, the sliver FB′, which, within the draft system has become spread out in the manner of a flat band, is compressed along the pressing line of each roll pair, according to the respective circumferential speed. The entry pair 5 a , 5 b combined with the midpoint pair 6 a , 6 b together form the so-called preliminary draw field VF. The midpoint pair 6 a , 6 b and the delivery roll pair 7 a , 7 b make up the main draw field HF.
  • a deflection bar 20 is further located in the main draw field HF, which diverts the direction of the travel of the sliver FB′ and, in this way, assures a better guidance of the fibers, especially such fibers as have not been compressed between the two roll pairs 6 a , 6 b , and 7 a , 7 b .
  • the drawn sliver FB′, with the aid of a deflecting roll 9 is diverted to a band shaping apparatus 10 and is further consolidated thereby.
  • the sliver FB′ by means of a calender roll pair 13 , 14 , passes through a turning sliver duct 16 , which is set into a rotating, coiling plate 17 , which turns with the angular speed ⁇ , and is so coiled into a sliver can 18 at a speed of V L .
  • FIG. 1 principally mechanical components of the draw frame 1 are shown. Regulatory apparatuses, main computer, driving means and the like are not shown, since they are not essential within the framework of the present invention and represent embodiments already in common knowledge.
  • the sliver FB′ at the output of the draft system 4 exhibits a band weight of less than 2.5 ktex.
  • the band weight is even less than 1.3 ktex and preferentially it may be shown to be less than 0.8 ktex.
  • the goal of this small band weight at the output of the first draft system 4 is to achieve a yarn on the ring spinning machine 200 , which lies in the range of a yarn fineness of less than 100 tex down to 10 tex or even less than that stated range. This is to be carried out giving full consideration to a high pull of more than 30, favorably more than 70, and advantageously more than 100, in the second draft system 204 of the ring spinning machine 200 , (see FIG. 1 ). Up to the present time, such finenesses were not known by methods which excluded a flyer. However, the said finenesses have now been realized by the design of the proposed, invented method and apparatus. The elimination of the complex flyer saves space, time and expense.
  • the sliver FB′ after its exit from the first draft system 4 is provided with an effective protective winding, in order to lend to it a higher degree of strength, so that by this means, the drawing power of the second draft system would not be compromised.
  • this said protective winding which is characterized within the limits of the invented apparatus, runs more than five turns per meter of sliver, This protectional winding is made by means of a sliver duct 26 rotating about a vertical axis 21 (see arrow f 1 ). The input, output ends 26 a , 26 b of the said duct 26 are centrally aligned on the axis 21 .
  • the drawn sliver FB′ because of the curve of the sliver duct 26 , as well as the rotational movement thereof, thus acquires the desired protective winding, so that it, in accord with the presented embodiment shaping shown in FIG. 3 , subsequently winds itself upon a spool 70 of an only schematically indicated spooling apparatus 75 , whereby the spool 70 rotates about its horizontal axis 71 (see arrow f 2 ).
  • the spool 70 traverses back and forth along its axis 71 (see arrow f 3 ).
  • the installed drive can be an individual drive or a multitype drive.
  • a control of the draw frame 100 can be made available by a centralized computer.
  • FIG. 3 illustrates the deposition of the sliver by the sliver duct 26 and the spool apparatus 75 .
  • a spool apparatus 85 is shown with a stationary (non-traversing) spool, which, by means of a schematically indicated drive means 82 is set into rotation about its longitudinal axis 81 (see arrow f 4 ).
  • the spool proximal end 36 b of a spatially swung sliver duct 36 is frictionally connected with an endless, flat belt 88 , which can circulate between two, horizontally separated, cylinders 87 , 89 , the rotational axes of which are vertically aligned.
  • the cylinder 87 is driven by a reversible motor 86 , in such a manner, (see FIG.
  • the sliver duct 36 is additionally rotated (see arrow f 7 ) about its own axis by a two sided, frictional contact on the part of the flat belt, whereby the desired protective winding in the sliver FB′ is achieved.
  • a spool arrangement 95 with a vertically disposed spool axis 91 is provided at the outlet of the draw frame 1 . Also, in this case the spool 90 traverses up and down in the direction of the vertical axis 91 at the output of the draw frame 1 , in order to fully wind the said spool over its entire spool height.
  • a sliver duct 46 which immediately follows the calender rolls 13 , 14 , serves here also for the provision of a protective winding in the sliver FB′.
  • the outlet 46 b of the sliver duct 46 is placed eccentrically, so that the sliver duct 46 can rotate around the spool 90 for the winding of the sliver FB′.
  • FIGS. 6 a two possibilities are presented for placing a protective winding about the sliver FB′—alternatively or additionally to a sliver duct 16 , 26 , 36 , i.e. 46 )
  • a rotational-tubule 56 is provided, which is set into rotation about its own longitudinal axis, as is shown by arrow f 10 .
  • the sliver FB′ winds itself, in this arrangement, about a helical wire 57 running in the interior of the turning tubule 56 .
  • the sliver FB′ obtains the desired protective winding, as it leaves the outlet of the turning tubule 56 being drawn therefrom by rolls 13 a , 14 a , before said winding is stored in a can or wound onto a spool.
  • FIGS. 6 b , 6 c is an angled sectional view, i.e., a sectioned profile view of a pneumatically pressurized compaction nozzle 66 , which possesses a central penetrative passage 67 for the sliver FB′.
  • open eccentrically two inclined penetrative borings 68 running in the sliver transport direction. These borings 68 are to introduce compressed air (see arrow p 11 ). These can first, be used for the threading of the sliver FB′ into the nozzle 66 , or second, for the turning, i.e., a false winding of the sliver FB′ in the nozzle 66 (see arrow f 8 ).
  • the compaction nozzle 66 can be placed before or after the calender rolls 13 , 14 .
  • this said compaction nozzle can replace the band shaping apparatus 10 in FIG. 3 or the sliver duct 26 .
  • the invented method permits, that the delivery speed V L (see FIG. 2 ) of the first draft system can be adjusted to more than 250 m/min, since, because of the protective winding of more than five turns per meter—advantageously more than ten turns per meter—the sliver produced from the first draft system FB′ is sufficiently strong.
  • the invention is not limited to the presented and described embodiment examples. Alterations thereto within the framework of the patent claims are possible. For example, it is possible that instead of a ring spinning machine, another spinning machine could be used, for example an air or friction spinning machine. Likewise, the possibility exists that the sliver leaving the draw frame could be furnished with an effective protective winding (at least five turns per meter of fiber band), wherein a round storage can—if one such as shown in FIG. 2 is employed—rotates itself with a higher speed of turning than is normal for this rotation. The false winding formation which has been exclusively imparted to the sliver by the rotation of the swung sliver duct (in the range of one turn per meter) can thereby be reinforced.
  • the speed of rotation ratio is 10 to 1 (revolutions per time unit) of the turning plate 17 along with the sliver duct 16 to the can 18 .
  • the invention can be inserted in draw frames, wherein the first draft system can be controlled or not controlled.
US11/365,761 2005-03-03 2006-03-01 Spinning method without a flyer as well as an apparatus with a draft system Abandoned US20060207238A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005009731A DE102005009731A1 (de) 2005-03-03 2005-03-03 Flyerloses Spinnverfahren sowie Vorrichtung mit einem Streckwerk
DE102005009731.6 2005-03-03

Publications (1)

Publication Number Publication Date
US20060207238A1 true US20060207238A1 (en) 2006-09-21

Family

ID=36000955

Family Applications (1)

Application Number Title Priority Date Filing Date
US11/365,761 Abandoned US20060207238A1 (en) 2005-03-03 2006-03-01 Spinning method without a flyer as well as an apparatus with a draft system

Country Status (7)

Country Link
US (1) US20060207238A1 (zh)
EP (1) EP1853755B1 (zh)
JP (1) JP2008531862A (zh)
CN (1) CN101133197B (zh)
AT (1) ATE505571T1 (zh)
DE (2) DE102005009731A1 (zh)
WO (1) WO2006092176A1 (zh)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9708151B2 (en) 2011-07-15 2017-07-18 Maschinefabrik Rieter Ag Bobbin winding machine
TWI649249B (zh) * 2018-07-20 2019-02-01 東電研工業股份有限公司 Snake misalignment method and device thereof

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CH705221A1 (de) * 2011-07-01 2013-01-15 Rieter Ag Maschf Vorspinnmaschine zur Herstellung eines Vorgarns sowie Verfahren zum Anspinnen eines Faserverbands.
DE102012023985A1 (de) 2012-12-07 2014-06-12 Saurer Germany Gmbh & Co. Kg Luftspinnvorrichtung
CN103726150B (zh) * 2013-11-01 2016-09-14 苏州天明纺织原料有限公司 一种采用单纤维纺纱的纺纱工艺及其纺纱系统
DE102017102623A1 (de) * 2017-02-09 2018-08-09 TRüTZSCHLER GMBH & CO. KG Verfahren und Anlage zur Bearbeitung von Fasern
KR101873162B1 (ko) * 2017-06-19 2018-06-29 박범수 리프팅 시술용 원실의 코그 성형장치

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5970700A (en) * 1997-04-18 1999-10-26 Wellman, Inc. Drafting apparatus and method for producing yarns
US20020134068A1 (en) * 2000-08-16 2002-09-26 Maschinenfabrik Rieter Ag Spinning machine with a condensing device
US6796116B2 (en) * 2001-07-20 2004-09-28 W. Schlafhorst Ag & Co. Sliver opening device for an open-end spinning device

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2934830A1 (de) * 1979-08-29 1981-03-19 W. Schlafhorst & Co, 4050 Mönchengladbach Verfahren und vorrichtung zum drehen und/oder verziehen von faserband
DE2934867A1 (de) * 1979-08-29 1981-03-19 W. Schlafhorst & Co, 4050 Mönchengladbach Drehkopf fuer strangfoermiges fasermaterial
JPS5663022A (en) * 1979-10-25 1981-05-29 Murata Mach Ltd Three-step type high drafting device in spinning frame
GB8421020D0 (en) * 1984-08-17 1984-09-19 Carding Spec Canada Handling silver
CA2005018A1 (en) * 1988-12-12 1990-06-12 Elbert F. Morrison Vacuum spinning of roving
DE4038948A1 (de) * 1990-12-06 1992-06-11 Fritz Stahlecker Spinnmaschine zum erspinnen von garnen aus faserbaendern
DE4106298A1 (de) * 1991-02-28 1992-09-03 Fritz Stahlecker Verfahren zum verspinnen von faserbaendern und spinnmaschine
DE4127490A1 (de) * 1991-08-20 1993-02-25 Fritz Stahlecker Ringspinnmaschine
JPH0949136A (ja) * 1995-08-04 1997-02-18 Kanebo Ltd ポリエステル紡績糸及びその製造方法
EP1329541A3 (de) * 1998-05-13 2003-08-27 Maschinenfabrik Rieter Ag Textilverarbeitende Maschine mit einem Streckwerk
US7647760B2 (en) * 2003-09-12 2010-01-19 Maschinenfabrik Rieter Ag Drawing frame-roving frame combination for the production of rove by means of a pneumatic spinning process

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5970700A (en) * 1997-04-18 1999-10-26 Wellman, Inc. Drafting apparatus and method for producing yarns
US20020134068A1 (en) * 2000-08-16 2002-09-26 Maschinenfabrik Rieter Ag Spinning machine with a condensing device
US6796116B2 (en) * 2001-07-20 2004-09-28 W. Schlafhorst Ag & Co. Sliver opening device for an open-end spinning device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9708151B2 (en) 2011-07-15 2017-07-18 Maschinefabrik Rieter Ag Bobbin winding machine
TWI649249B (zh) * 2018-07-20 2019-02-01 東電研工業股份有限公司 Snake misalignment method and device thereof

Also Published As

Publication number Publication date
JP2008531862A (ja) 2008-08-14
EP1853755A1 (de) 2007-11-14
CN101133197B (zh) 2011-12-07
WO2006092176A1 (de) 2006-09-08
DE102005009731A1 (de) 2006-09-07
CN101133197A (zh) 2008-02-27
DE502005011257D1 (de) 2011-05-26
EP1853755B1 (de) 2011-04-13
ATE505571T1 (de) 2011-04-15

Similar Documents

Publication Publication Date Title
US20060207238A1 (en) Spinning method without a flyer as well as an apparatus with a draft system
CN101565865B (zh) 用于将粗纱卷绕到纱管上的装置和方法
US4028874A (en) Roving and process for its manufacture
US3605395A (en) Method and apparatus for spinning of fibrous materials utilizing a rotary spinning chamber
CN103556315A (zh) 一种40s高强力涡流粘胶纱纺纱工艺及粘胶纱
JPS6219528B2 (zh)
CN1093894C (zh) 生产一种由天然纤维和合成纤维制的纤维条的方法和装置
US4302926A (en) Multi-component yarn and method of apparatus for its manufacture
CA1061202A (en) Apparatus for spinning textile fibers
US4365464A (en) Apparatus to uniformly control wrapping a filament around the surface of a spun core yarn during ring spinning
US2260229A (en) Method of spinning single ply yarn comprising a blend of relatively long fibers and relatively short fibers
JP2008531862A5 (zh)
CN1083022C (zh) 生产加捻的纱线的方法和装置
CN103628209A (zh) 一种包覆式集聚纺纱方法及其装置
JP7191836B2 (ja) 異なる練条での芯糸を有するコアヤーン、及び当該コアヤーンから得られる生地
CN101158068B (zh) 旋流纺纱机及其纺纱方法
JPH0718104B2 (ja) スチ−ルコ−ドの製造方法及び装置
US3358432A (en) Spinning apparatus and method utilizing miniature carding rolls
EP1338687A1 (en) Multi-component fancy yarn and method and device for its production
CN101205656A (zh) 用于生产织物的设备
US2710428A (en) Apparatus for spinning yarn
CN103981600A (zh) 一种40s高强力转杯纯棉纱生产方法
CN116219598B (zh) 纺织设备及纺织方法
CN110268111B (zh) 用于加工纤维的方法和设备
EP0295731A1 (en) Twisting device for giving a false twisting to a textile fibre sliver

Legal Events

Date Code Title Description
AS Assignment

Owner name: RIETER INGOLSTADT SPINNEREIMASCHINENBAU AG, GERMAN

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHERIF, CHOKRI;REEL/FRAME:017959/0829

Effective date: 20060529

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION