US20120168553A1 - Winding mandrel for the production of reels of web material - Google Patents

Winding mandrel for the production of reels of web material Download PDF

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Publication number
US20120168553A1
US20120168553A1 US13/261,169 US201013261169A US2012168553A1 US 20120168553 A1 US20120168553 A1 US 20120168553A1 US 201013261169 A US201013261169 A US 201013261169A US 2012168553 A1 US2012168553 A1 US 2012168553A1
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US
United States
Prior art keywords
inserts
expandable
mandrel according
mandrel
winding mandrel
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
US13/261,169
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English (en)
Inventor
Mauro Gelli
Tiziano Fracassi
Daniele Dettori
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.)
Fabio Perini SpA
Original Assignee
Fabio Perini SpA
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 Fabio Perini SpA filed Critical Fabio Perini SpA
Publication of US20120168553A1 publication Critical patent/US20120168553A1/en
Assigned to FABIO PERINI S.P.A. reassignment FABIO PERINI S.P.A. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DETTORI, DANIELE, FRACASSI, TIZIANO, GELLI, MAURO
Abandoned legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details
    • B65H75/24—Constructional details adjustable in configuration, e.g. expansible
    • B65H75/242—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages
    • B65H75/243—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages actuated by use of a fluid
    • B65H75/2437—Expansible spindles, mandrels or chucks, e.g. for securing or releasing cores, holders or packages actuated by use of a fluid comprising a fluid-pressure-actuated elastic member, e.g. a diaphragm or a pneumatic tube

Definitions

  • the present invention concerns the field of machines for the processing of paper and working of web materials, in particular but not exclusively tissue paper.
  • expandable winding mandrels are frequently used, fitted with one or more cores made of cardboard or other lightweight material around which the required quantity of web material is wound to form a log or roll.
  • This roll once the winding mandrel has been removed, can be cut into smaller rolls with shorter axial length for packaging and sale.
  • several axially aligned cores are fitted on the mandrel in order to simultaneously wind a plurality of rolls with axial dimension equal to the dimension of the finished reel.
  • WO-03/074398 describes a machine for winding web material on winding mandrels of the type mentioned above.
  • U.S. Pat. No. 5,379,964, U.S. Pat. No. 6,454,204, EP-A-0322864 and EP-A-0850867 describe winding mandrels made at least partly of synthetic resin reinforced with carbon fiber. These mandrels have mechanical locking systems operated in various ways. The locking elements that protrude from the mandrel to lock the winding core on it are controlled by internal members.
  • the invention relates to the production of expandable winding mandrels of the type described above which are particularly efficient and reliable, resistant to wear and suitable for securely retaining and locking the winding cores during the winding process.
  • the invention proposes mandrels which reduce the weight and rotation inertia, which provide good rigidity, robustness and resistance to wear, and high critical speeds.
  • a winding mandrel for the production of reels of web material with a wall made at least partly of carbon fibers, for example by winding continuous fibers or filaments in a resin matrix which then undergoes polymerization and/or crosslinking.
  • Expandable mechanical or pneumatic members are provided along the mandrel wall to torsionally and axially lock the tubular cores on the mandrel.
  • the elements that lock the winding core on the mandrel are deformable, preferably elastically, under the effect of the pressure of a fluid, preferably air.
  • a fluid preferably air.
  • the expandable locking members are preferably fully retracted in respective seats and do not protrude from the outer surface of the cylindrical wall of the mandrel. In this way said members do not interfere with insertion or extraction of the winding cores, reducing wear and at the same time facilitating the insertion and extraction operations.
  • the expandable members Under the pressure of the (liquid or gaseous) fluid the expandable members deform, protruding from the outer cylindrical surface of the mandrel wall.
  • the deformable elements themselves, under the pressure of the fluid, form the member that cooperates with the core, locking it on the mandrel.
  • the expandable member swells due to the effect of the fluid under pressure and protrudes from the surface of the mandrel, pressing with a portion against the inner surface of the tubular winding core fitted on the mandrel.
  • the expandable members comprise a plurality of expandable elements, preferably pneumatic, which expand radially outwards by delivering a fluid under pressure, for example and preferably air.
  • the fluid under pressure is delivered for example by means of a longitudinal duct which extends along at least a portion of the inner cavity of the mandrel and has a valve at one end of the mandrel.
  • At least one insert is arranged along the mandrel, connected to the longitudinal duct for distribution of the fluid under pressure, extending inside said substantially cylindrical wall for at least a portion of the axial length of the mandrel.
  • the insert comprises at least one seat for an expandable pneumatic element, in fluid connection with said longitudinal duct.
  • Preferably several inserts are provided distributed along the axial length of the mandrel.
  • each insert has at least two seats and preferably three seats for respective pneumatic expandable elements, angularly staggered with respect to one another, preferably at a constant angular pitch between one seat and the other.
  • the substantially cylindrical wall is formed of a plurality of tubular portions made of carbon fiber and one or more inserts; said tubular portions are interconnected by said inserts, hence the outer surface of the mandrel is formed partly of the inserts, which can be made of metal, for example a lightweight metal such as aluminum or its alloys.
  • the outer surface of the mandrel formed of tubular portions made of carbon fiber and one or more inserts, is covered with a metal or ceramic coating measuring a few tenths of a millimeter (for example 0.3 mm).
  • a metal or ceramic coating measuring a few tenths of a millimeter (for example 0.3 mm).
  • the inserts are provided with means of connection or interface to connect the inserts to the carbon fiber tubular portions.
  • each of said inserts can have a substantially cylindrical surface which defines, with outer surfaces of said carbon fiber tubular portions, the outer surface of the mandrel. Adjacent to said substantially cylindrical surface, frustoconical surfaces can be provided for connection to the tubular portions connected to the respective insert.
  • the carbon fiber tubular portions will have, internally, complementary frustoconical surfaces thus obtaining reciprocal coupling between the inserts and the carbon fiber tubular portions.
  • tubular portions and the respective insert it is possible to use cylindrical surfaces with a grooving, for example in the order of 0.2 mm, to enhance adhesion between the fiber tubular portions and the inserts via the use of glue.
  • a grooving for example in the order of 0.2 mm
  • glue glue
  • the inserts comprise a central body, in which the seats for the expandable members are provided, and axial ends each forming an interface surface to attach said insert to the respective tubular portions.
  • each insert has an axial through seat, inside which a cylindrical member is housed, provided with an axial hole through which said longitudinal duct passes.
  • the longitudinal duct has, at each insert, at least one outlet for the fluid under pressure.
  • the cylindrical member is axially attached to the longitudinal duct and forms passages for supplying the fluid under pressure coming out of said at least one outlet towards distribution channels formed in the insert and in fluid communication with the expandable elements.
  • the distribution channels comprise a ring-shaped groove and substantially radial passages extending from said ring-shaped groove towards said cavities containing the expandable elements.
  • the pneumatic expandable elements are formed of volumes of fluid under pressure, at least partially delimited by a deformable diaphragm or wall, preferably an elastically deformable one.
  • the deformable wall can be made of natural or synthetic rubber, or other elastically deformable material having suitable characteristics of mechanical resistance and elastic deformability.
  • FIG. 1 shows an axonometric view of a mandrel according to the invention in one embodiment
  • FIGS. 2 and 3 show longitudinal sections of the ends of the mandrel of FIG. 1 ;
  • FIGS. 2A and 3A show longitudinal sections of the ends of the mandrel in a modified embodiment
  • FIG. 4 shows a longitudinal section of an intermediate portion of the mandrel of FIG. 1 provided with inserts comprising expandable pneumatic elements
  • FIG. 5 shows an enlargement of a portion of FIG. 4 ;
  • FIG. 5A shows an enlargement similar to that of FIG. 4 , with parts removed, in a different embodiment
  • FIG. 6 is a section according to VI-VI of FIG. 5 ;
  • FIG. 6A is a section according to A-A of FIG. 5A ;
  • FIG. 7 is a view according to VII-VII of FIG. 5 ;
  • FIG. 8 is an enlargement of an insert with expandable pneumatic elements in longitudinal section in a modified embodiment of the invention.
  • FIG. 9 is a longitudinal section of an intermediate portion of a mandrel with the inserts of FIG. 8 .
  • FIG. 1 shows schematically a mandrel made according to the invention and indicated overall by the number 1 .
  • the mandrel has an intermediate part 3 and two end portions 5 and 7 shown in the enlargements of FIGS. 2 and 3 .
  • the portion 3 inserts 9 are arranged provided with expandable pneumatic elements, described below in greater detail.
  • the ends 5 and 7 are made of metal, for example aluminum.
  • each of the portions 5 and 7 can in turn consist of two elements: a hollow cylindrical pad, fitted to the final tubular portion made of carbon fiber, and a conical end part which is joined to the pad by means of a coupling member, for example a pin, a screw, a set screw or other similar systems.
  • a coupling member for example a pin, a screw, a set screw or other similar systems.
  • FIG. 3A shows the end 7 in this embodiment. 7 A indicates the hollow cylindrical pad and 7 B the tapered end part. 7 C indicates a connection screw between the parts 7 A and 7 B.
  • FIG. 2A shows the end 5 , limited to the hollow cylindrical pad 5 A, which is provided with threaded holes 5 C for fastening screws of a closing part not shown.
  • the tapered end is one single piece integral with the tubular portion and therefore if one of the two ends 5 or 7 breaks or fails, the entire mandrel would have to be discarded and replaced with a new one.
  • the intermediate or central part 3 is made at least partly of carbon fiber in a polymer resin matrix. More specifically, in the embodiment shown in FIG. 1 , with some details thereof shown in FIGS. 2 to 7 , the central or intermediate part 3 of the mandrel consists of a plurality of tubular portions 11 , each of which is made with a wall in carbon fiber in a polymer matrix.
  • the various tubular portions 11 are interconnected at the inserts 9 , which in this embodiment constitute not only a housing for the pneumatic expandable elements but also reciprocal connection elements between the tubular portions 11 and have a substantially cylindrical surface which forms, together with the cylindrical surface of the tubular portions 1 , the outer surface of the mandrel 1 .
  • a longitudinal duct 13 extends roughly coaxially with the cylindrical wall defined by the tubular portions 11 for delivery of a fluid under pressure, typically air, to expand the pneumatic expandable elements housed in the single inserts 9 .
  • the longitudinal duct 13 has a terminal valve 13 A at the end 5 of the mandrel 1 , via which the expandable pneumatic elements can be expanded or retracted by respectively delivering a fluid under pressure, or allowing the discharge thereof.
  • each insert 9 has a structure which is described below with reference to FIG. 5 to 7 .
  • the insert has a central body 9 A, in which seats are provided for the expandable pneumatic elements described below and from which axial ends 9 B extend forming the reciprocal connection members between insert 9 and tubular portions 11 .
  • the ends 9 B have frustoconical outer surfaces 9 C defining an interface with corresponding complementary frustoconical surfaces 11 A provided on the respective two tubular portions 11 which are connected to the insert 9 .
  • the frustoconical surfaces 9 C have form and dimension such that the substantially cylindrical outer surface 11 B of each tubular portion 11 is substantially aligned with the outer surface 9 D of the central body 9 A of the insert 9 thus forming a substantially cylindrical continuous wall of the mandrel 1 .
  • a small ring-shaped groove can be maintained between the edge of each tubular portion 11 and the central body 9 A of the insert 9 , as shown in the drawing.
  • seats (three in the example of the drawing) shown at 21 are provided inside the central body 9 A, which house the expandable pneumatic elements described below, forming the torsional and axial engagement members of the winding core with respect to the mandrel.
  • the three seats 21 are arranged angularly staggered by a constant angle of 120°, but other arrangements are possible, for example with a different number of seats or with an irregular arrangement, i.e. with the various seats having different angular pitch.
  • Each seat 21 houses an expandable element 23 comprising an elastically deformable wall, for example made of rubber and provided with a lip 23 A for anchorage and sealing inside the seat 21 .
  • the expandable element has a substantially rectangular shape elongated in the axial direction of the mandrel, although other shapes of the expandable element in question are not ruled out, for example development in a circumferential direction greater than the development in the axial direction.
  • Each expandable element formed by the wall 23 is locked in the respective seat 21 by means of a flange 25 with substantially rectangular development ( FIG. 7 ). Locking is obtained by means of a pair of screws 27 .
  • a distribution channel 31 leads into each seat 21 , connecting the volume defined between the bottom of the seat 21 on one side and the deformable wall forming the pneumatic expandable element 23 on the other with the longitudinal duct 13 .
  • this connection is obtained by interposing a cylindrical member 33 inserted coaxially and around the longitudinal duct 13 and inside an axial hole 9 E of the insert 9 .
  • the cylindrical member 33 has a plurality of outlets shown at 35 for the fluid under pressure, which can be in positions angularly corresponding to the positions of the ducts 31 .
  • outlets 35 lead at one end into a ring-shaped groove 37 in the axial hole of the cylindrical member 33 and on the opposite side into a ring-shaped groove 39 provided in the inner surface of the hole 9 E of the body 9 A of the insert 9 .
  • the cylindrical member 33 has seal gaskets 41 and 43 between the cylindrical member 33 and the longitudinal duct 13 on the one side and between the cylindrical member 33 and the inner surface of the hole 9 E of the insert 9 on the other.
  • the cylindrical member 33 is axially secured by forcing or other suitable manner inside the hole 9 E of the body 9 A of the insert 9 .
  • the cylindrical body 33 is in turn axially secured to the longitudinal duct 13 by means of a diameter pin 45 . In this way a reciprocal positioning is obtained between the longitudinal duct 13 and the inserts 9 . This reciprocal positioning can also be obtained with other forms of attachment between the parts 13 , 33 and 9 .
  • each insert 9 has three expandable pneumatic elements arranged at 120° from one another, but as mentioned above, the number of the latter can vary. For example four or two of said expandable elements can be provided on each insert 9 .
  • the arrangement of the inserts around the axis of the mandrel 1 is such that the pneumatic expandable elements are arranged in various angular positions around the development of the mandrel thus obtaining an effective torsional and axial locking effect of the winding cores on the respective mandrel.
  • FIG. 5 shows a portion of a tubular core A fitted on the mandrel 1 , which can be locked on the latter both axially and torsionally by introducing a fluid under pressure into the longitudinal duct 13 to cause radial expansion of the pneumatic expandable elements 23 .
  • the presence of the inserts 9 advantageously made of metal, for example aluminum (at least for the body 9 A and the ends 9 B, while the cylindrical member 33 could preferably be made of plastic) makes balancing of the mandrel much quicker, simpler and more effective. In fact, these members must be appropriately balanced to prevent them vibrating during use.
  • the presence of metal areas distributed along the axial length of the mandrel, consisting of the various inserts 9 makes it possible to remove or add material, for example by drilling the aluminum block forming the body 9 A of the single insert and if necessary inserting into the hole thus obtained counterweights made of different materials, with higher density than the aluminum.
  • FIGS. 5A and 6A show a modified embodiment, in longitudinal and cross section respectively. These figures show only the central body of the insert 9 . Identical numbers indicate parts identical or equivalent to those of the embodiment example illustrated in FIGS. 5 and 6 .
  • the ends 9 B of the body 9 A have in this case a substantially cylindrical surface provided preferably with one or more grooves 9 S with depth of a few tenths of a millimeter, to obtain a coupling, if necessary by gluing, with the substantially cylindrical inner surface of the tubular portions 11 .
  • FIG. 5A also shows a possible coating R made of ceramic and/or metal which covers the entire outer surface of the mandrel with the exception of the area in which the expandable elements are provided. This coating is applied on the fully assembled mandrel, completed with inner elements of the inserts 9 , which are omitted here for the sake of clarity of the drawing. The coating can also be provided in the remaining embodiments.
  • FIGS. 8 and 9 show a modified embodiment of the invention. Identical numbers indicate identical or equivalent parts with respect to those described above with reference to FIG. 1 to 7 .
  • the central part 3 of the mandrel 1 is formed of one single tubular body or tubular portion 11 made of carbon fiber.
  • This tube 11 made of carbon fiber similarly to the tubular portions 11 of the previous embodiments, can be produced using known techniques for winding of fibers or continuous filaments around a forming mandrel, in which the fibers or filaments are fed together to a polymerisable resin to form a cylindrical wall around the forming mandrel. The wall thus obtained subsequently undergoes polymerisation and/or crosslinking of the resin matrix.
  • a longitudinal duct for the delivery of a fluid under pressure, typically air, extends for at least a portion of the axial length of the mandrel 1 .
  • this duct 13 has an end valve 13 A for delivery of fluid under pressure or for discharge of the fluid to the outside.
  • inserts 109 are arranged, forming housing seats for pneumatic expandable elements described below with particular reference to FIG. 8 .
  • the positioning of the inserts 109 and the axial distribution thereof along the mandrel 1 are chosen according to operating and construction requirements.
  • the insert 109 has a body 109 A ( FIG. 8 ), in which radial seats 121 are provided where a cylinder 122 is inserted with its axis in a radial direction and having channels 123 in fluid connection with the longitudinal duct 13 which passes through a central diameter hole of the cylinder 122 .
  • the cylinder 122 is attached, for example by means of two threads, to two sleeves 125 locking respective pneumatically expandable elements 127 substantially in the form of a cap formed of an elastically deformable material, for example rubber.
  • a chamber or volume 129 is defined, in which fluid under pressure can be introduced via the duct 123 and the duct 13 .
  • each sleeve 125 and the seat 121 formed in the body 109 A of the insert 109 respective gaskets 131 are arranged.
  • the body 109 A of the insert 109 and the longitudinal duct 13 which passes through an axial hole of the body 109 A of the insert 109 , further seal gaskets 133 are arranged.
  • each insert 109 is axially attached to the longitudinal duct 13 , for example via the use of a respective diameter pin 135 or set screws or other equivalent means.
  • each expandable element 127 is housed at least partially inside a respective hole 11 F provided in the cylindrical wall 11 made of carbon fiber.
  • This embodiment therefore, requires machining by drilling of the carbon fiber component 11 forming the central or intermediate part 3 of the mandrel 1 , with consequent formation of stress concentration areas along the mandrel wall. Furthermore, balancing of the mandrel is more difficult due to the lack of metal surfaces accessible from the outside which can be machined to lighten the component.
  • the operation of the mandrel in this embodiment can be easily understood from the above description.
  • the core A (shown partially in FIG. 8 ) is torsionally and axially locked on the mandrel by expansion of the individual pneumatic expandable elements 127 due to the delivery of a fluid under pressure, typically air, through the longitudinal duct 13 and the radial ducts 123 .
  • the core is released by discharging the pressure from these ducts.

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  • Moulding By Coating Moulds (AREA)
  • Rolls And Other Rotary Bodies (AREA)
US13/261,169 2009-08-03 2010-07-27 Winding mandrel for the production of reels of web material Abandoned US20120168553A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
ITFI2009A000176 2009-08-03
ITFI2009A000176A IT1395993B1 (it) 2009-08-03 2009-08-03 "mandrino di avvolgimento per la produzione di rotoli di materiale nastriforme"
PCT/IT2010/000336 WO2011016071A1 (en) 2009-08-03 2010-07-27 Winding mandrel for the production of reels of web material

Publications (1)

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US20120168553A1 true US20120168553A1 (en) 2012-07-05

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US13/261,169 Abandoned US20120168553A1 (en) 2009-08-03 2010-07-27 Winding mandrel for the production of reels of web material

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US (1) US20120168553A1 (de)
EP (1) EP2462045B1 (de)
CA (1) CA2769970A1 (de)
ES (1) ES2457491T3 (de)
IT (1) IT1395993B1 (de)
WO (1) WO2011016071A1 (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103723581A (zh) * 2013-12-10 2014-04-16 苏州瑞日纺织科技有限公司 一种纺机用可调节卷筒心轴
CN103723580A (zh) * 2013-12-10 2014-04-16 苏州瑞日纺织科技有限公司 一种纺机用可调节卷筒

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20150307315A1 (en) 2014-04-28 2015-10-29 Paper Converting Machine Company Italia Spa Flexible winding mandrel with core segments for producing rolls of wound paper
IT202000023854A1 (it) * 2020-10-09 2022-04-09 Lamiflex Spa Albero espansibile a listelli con bassa inerzia e relativo processo di fabbricazione

Citations (7)

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US3493189A (en) * 1968-03-21 1970-02-03 Inta Roto Machine Co Inc The Expansible mandrel
US3904144A (en) * 1971-07-02 1975-09-09 Giovanni Gattrugeri Expansible mandrel
US3904143A (en) * 1972-05-19 1975-09-09 Bayer Ag Reeling-up drum
US4771963A (en) * 1978-10-23 1988-09-20 Giovanni Gattrugeri Expansible mandrel with a plurality of expansion devices
US5509618A (en) * 1994-06-14 1996-04-23 Klimex, Inc. Air shaft
US5746387A (en) * 1996-02-20 1998-05-05 Pretto; Alessio G. Hybrid composite expandable shaft
US6405970B1 (en) * 2000-06-15 2002-06-18 Fuji Tekko Co., Ltd. Alignin core shaft

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EP0322864B1 (de) * 1987-12-28 1992-03-11 Yamauchi Corporation Spindel für eine Wickelhülse
JP3198736B2 (ja) * 1993-07-14 2001-08-13 東レ株式会社 ボビン把持装置およびボビンホルダ
US5379964A (en) * 1993-08-10 1995-01-10 Addax, Inc. Composite expandable shaft
DE19910475C2 (de) * 1999-03-10 2001-06-13 Spanntec Gmbh Spann Und Wickel Rotierbares Tragelement
US8210462B2 (en) 2002-02-28 2012-07-03 Kimberly-Clark Worldwide, Inc. Center/surface rewinder and winder

Patent Citations (7)

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Publication number Priority date Publication date Assignee Title
US3493189A (en) * 1968-03-21 1970-02-03 Inta Roto Machine Co Inc The Expansible mandrel
US3904144A (en) * 1971-07-02 1975-09-09 Giovanni Gattrugeri Expansible mandrel
US3904143A (en) * 1972-05-19 1975-09-09 Bayer Ag Reeling-up drum
US4771963A (en) * 1978-10-23 1988-09-20 Giovanni Gattrugeri Expansible mandrel with a plurality of expansion devices
US5509618A (en) * 1994-06-14 1996-04-23 Klimex, Inc. Air shaft
US5746387A (en) * 1996-02-20 1998-05-05 Pretto; Alessio G. Hybrid composite expandable shaft
US6405970B1 (en) * 2000-06-15 2002-06-18 Fuji Tekko Co., Ltd. Alignin core shaft

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103723581A (zh) * 2013-12-10 2014-04-16 苏州瑞日纺织科技有限公司 一种纺机用可调节卷筒心轴
CN103723580A (zh) * 2013-12-10 2014-04-16 苏州瑞日纺织科技有限公司 一种纺机用可调节卷筒

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Publication number Publication date
IT1395993B1 (it) 2012-11-09
WO2011016071A1 (en) 2011-02-10
EP2462045B1 (de) 2014-03-05
ES2457491T3 (es) 2014-04-28
EP2462045A1 (de) 2012-06-13
ITFI20090176A1 (it) 2011-02-04
CA2769970A1 (en) 2011-02-10

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Owner name: FABIO PERINI S.P.A., ITALY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GELLI, MAURO;FRACASSI, TIZIANO;DETTORI, DANIELE;REEL/FRAME:032915/0459

Effective date: 20120222

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