EP2080468A2 - Machine de nettoyage de sol - Google Patents

Machine de nettoyage de sol Download PDF

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Publication number
EP2080468A2
EP2080468A2 EP08173063A EP08173063A EP2080468A2 EP 2080468 A2 EP2080468 A2 EP 2080468A2 EP 08173063 A EP08173063 A EP 08173063A EP 08173063 A EP08173063 A EP 08173063A EP 2080468 A2 EP2080468 A2 EP 2080468A2
Authority
EP
European Patent Office
Prior art keywords
floor
cleaning machine
group
cleaning
trolley
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.)
Withdrawn
Application number
EP08173063A
Other languages
German (de)
English (en)
Inventor
Francesco Reccanello
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.)
IP Cleaning SRL
Original Assignee
IP Cleaning SRL
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 IP Cleaning SRL filed Critical IP Cleaning SRL
Publication of EP2080468A2 publication Critical patent/EP2080468A2/fr
Withdrawn legal-status Critical Current

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Classifications

    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/02—Floor surfacing or polishing machines
    • A47L11/20—Floor surfacing or polishing machines combined with vacuum cleaning devices
    • A47L11/202—Floor surfacing or polishing machines combined with vacuum cleaning devices having separate drive for the cleaning brushes
    • A47L11/2025—Floor surfacing or polishing machines combined with vacuum cleaning devices having separate drive for the cleaning brushes the tools being disc brushes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/29—Floor-scrubbing machines characterised by means for taking-up dirty liquid
    • A47L11/30—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction
    • A47L11/302—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction having rotary tools
    • A47L11/305—Floor-scrubbing machines characterised by means for taking-up dirty liquid by suction having rotary tools the tools being disc brushes
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4013—Contaminants collecting devices, i.e. hoppers, tanks or the like
    • A47L11/4016—Contaminants collecting devices, i.e. hoppers, tanks or the like specially adapted for collecting fluids
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4027—Filtering or separating contaminants or debris
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4041—Roll shaped surface treating tools
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4036—Parts or details of the surface treating tools
    • A47L11/4044—Vacuuming or pick-up tools; Squeegees
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4052—Movement of the tools or the like perpendicular to the cleaning surface
    • A47L11/4055—Movement of the tools or the like perpendicular to the cleaning surface for lifting the tools to a non-working position
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/4061—Steering means; Means for avoiding obstacles; Details related to the place where the driver is accommodated
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/408—Means for supplying cleaning or surface treating agents
    • A47L11/4083—Liquid supply reservoirs; Preparation of the agents, e.g. mixing devices
    • A—HUMAN NECESSITIES
    • A47—FURNITURE; DOMESTIC ARTICLES OR APPLIANCES; COFFEE MILLS; SPICE MILLS; SUCTION CLEANERS IN GENERAL
    • A47L—DOMESTIC WASHING OR CLEANING; SUCTION CLEANERS IN GENERAL
    • A47L11/00—Machines for cleaning floors, carpets, furniture, walls, or wall coverings
    • A47L11/40—Parts or details of machines not provided for in groups A47L11/02 - A47L11/38, or not restricted to one of these groups, e.g. handles, arrangements of switches, skirts, buffers, levers
    • A47L11/408—Means for supplying cleaning or surface treating agents
    • A47L11/4088—Supply pumps; Spraying devices; Supply conduits

Definitions

  • the invention concerns a floor-cleaning machine, and in particular, a professional-type floor-cleaning machine which is mainly designed for cleaning relatively extensive floors, for example inside commercial and/or small industrial premises.
  • This invention concerns in particular "walk-behind” machines.
  • floor-cleaning machines of the walk-behind type comprise operating groups which perform specific floor-cleaning operations, among which, one or more motorised rotating brushes which scrub the surfaces, a dispenser group which dispenses a detergent liquid, and a suction group to which a floor-wiping group is associated.
  • the floor-cleaning group normally comprises one or more flexible rubber blades, which drag on the floor to collect the detergent liquid and the dislodged dirt.
  • the operating groups are usually covered by suitable plastic or sheet-metal covers, and are mounted on board a sturdy, solid support trolley, usually of large dimensions, which is provided with handles or grips to be grasped by the operative in order to guide it in movement over the floor to be washed.
  • a common requirement in all profession floor-cleaning machines is to enable the floor-cleaning group to move vertically between a lowered work position, in which the blades are in contact with the floor, and a raised rest position, in which the blades are distanced from the floor such as not to scrape on it.
  • This movement is usually obtained by means of complicated kinematic activating systems, typically hinged systems having one or more jointed arms, which are mounted on the support trolley and to which the floor-cleaning group is coupled.
  • a drawback of professional floor-cleaning machines is therefore that they are rather expensive, not only because of the presence of the above-mentioned kinematic activating systems, but also because of the presence of all the motorisation organs and control organs which the kinematic systems require in order to function.
  • the aim of the present invention is to at least partly obviate the mentioned drawback, by providing a floor-cleaning machine which is so simple and rational as to enable a significant reduction in construction costs with respect to the floor-cleaning machines presently available.
  • the invention provides a floor-cleaning machine which comprises a support trolley on which at least a floor-cleaning group is installed, which group is provided with at least a rotating flexible blade and a motor for activating the blade, and gripping means which are destined to be held by a user in order to guide the trolley on the floor.
  • the gripping means are made available by a rigid frame, which is hinged to the support carriage and on which the operating group is directly fixed.
  • the support trolley can advantageously be made smaller and less sturdy than the trolleys usually used for professional floor-cleaners, thus further contributing to the constructional simplicity and therefore to the relative inexpensiveness of the machine.
  • the floor-cleaning machine comprises means for blocking the rigid frame in the configuration in which the operating group is in the raised rest position.
  • the means for blocking preferably comprise at least a telescopic arm, which is hinged to the trolley and the tilting frame, and to which disengageable stop means are associated, which stop means are destined to block the arm in a predetermined extended position.
  • the floor-cleaning machine further comprises a floor-cleaning group, which is provided with at least a flexible blade and which is mobile on the support trolley between a work position, in which the flexible blade is in contact with the floor, and a rest position, in which the flexible blade is distanced from the floor.
  • Magnetic means are preferably associated to the floor-cleaning group which block the group in the rest position.
  • Figure 1 is a side view of a floor-cleaning machine of the invention, with some components removed in order better to illustrated the aspects of the invention, and shown with the operating group 5 and the floor-cleaning group 7 both in the work position.
  • Figure 2 is a plan view of the floor-cleaning machine of figure 1 .
  • Figure 3 is a side view of the floor-cleaning machine of figure 1 , shown with the operating group 5 and the floor-cleaning group 7 both in the rest position.
  • Figure 4 is a side view of the machine of figure 1 complete with all components, and shown with the operating group 5 in the work position and the floor-cleaning group 7 in the rest position.
  • Figure 5 is larger-scale detail of figure 1 .
  • Figure 6 is a schematic view of the section of the floor-cleaning group 7 made according to line VI-VI denoted in figure 2 , in which a broken line shows the flexion of the blades 70 during the dragging thereof on the floor.
  • the floor-cleaning machine 1 comprises a rather compact, lightweight support trolley 2 which exhibits a horizontal base 20 and is provided with three support wheels, two of which are coaxial, fixed-axle, forward wheels 21, and one of which is a pivoting rear wheel 22.
  • the frame 3 has rounded corners and exhibits two transverse bars, a forward transverse bar 30 and a rear transverse bar 31, which are connected by two oppositely-positioned, identical, shaped longitudinal bars 32.
  • the rigid frame 3 is inserted externally on the side elements 23 of the mobile support trolley 2, to which mobile support trolley 2 it is hinged by means of two hinge joints 24 which singularly join a respective side element 23 to the adjacent longitudinal bar 32.
  • the hinge joints 24 are perfectly coaxial, such as to define a single axis of rotation A of the rigid frame 3 with respect to the mobile support trolley 2.
  • the axis of rotation A is oriented such as to be horizontal when the mobile support trolley 2 is resting on the floor, and is arranged in an intermediate position along the longitudinal bars 32, such that the rigid frame 3 is hinged to the mobile support trolley 2 like a reciprocating lever.
  • the longitudinal bars 32 of the frame 3 develop in a downwards direction, such that the forward transverse bar 30 is before the base 20 and is located substantially at a same height as the base 20, while the rear transverse bar 31 is at a higher level.
  • the rear transverse bar 31 functions as a grip for the user pushing the floor-cleaning machine 1, and is therefore positioned at a height at which it can be comfortably gripped.
  • the longitudinal bars 32 are extensible in the tract comprised between the axis of rotation A and the rear transverse bar 31, such as to enable height-regulation of the rear transverse bar 31 according to the user's needs.
  • a support plate 33 is further attached to the rigid frame 3 (see figure 2 ) at the forward transverse bar 30 position, on which support plate 33 a vertical bar 34 is welded.
  • a first end of a telescopic arm 4 (see figure 1 ) is hinged to the vertical bar 34, while a second end thereof is hinged to a fork 25 fixed below the base 20 of the trolley 2.
  • the hinge axes of the telescopic arm 4 with the vertical bar 34 and the fork 25 are both parallel to the axis of rotation A of the frame 3, and are positioned such that the telescopic arm 4 extends following a rotation of the frame 3 in an anticlockwise direction B which corresponds to the raising of the forward transverse bar 30.
  • the telescopic arm 4 is provided with stop means (not visible in the figures and of known type) which block the telescopic arm 4 in a predetermined extended position, and which can be commanded such as to free the block in order to enable a successive shortening of the telescopic arm 4.
  • the stop means act during an extension of the telescopic arm 4, blocking it when it reaches a predetermined length. With the block inserted the telescopic arm 4 cannot shorten and remains in the position reached.
  • Telescopic arms provided with such stop means are commercially available and are widely used for example in the furniture industry to keep the swinging doors of cupboards open.
  • An operating group denoted in its entirety by reference numeral 5 is installed upon the support plate 33, which operating group comprises a rotating brush with frontal bristles 50 to which a gear reducer 51 is associated.
  • the brush 50 is positioned below the support plate 33, with the rotation axis substantially vertical, such as to be able to rest the bristles frontally on the floor, while the gear reducer 51 is located above the support plate 33, at a hole (not visible) which enables mechanical connection with the brush 50.
  • the gear reducer 51 is controlled by a command lever 52 which is mounted on the rear transverse bar 31 of the frame 3 and which is connected to the gear reducer 51 via flexible cables (not illustrated).
  • a suction group denoted in its entirety by 6, is also mounted on the support plate 33, which suction group 6 schematically comprises a pump with the relative activating motor.
  • the suction group 6 is also controlled by manual organs (not illustrated) which are preferably mounted on the rear transverse bar 31 of the frame 3, such as to be easily operated by the user.
  • the suction group 6 is connected via a first flexible pipe 60 to a closed collecting reservoir 61, preferably made of plastic, which is arranged on board the mobile support trolley 2, and is in turn connected, via a second flexible pipe 62, to a floor-cleaning group 7.
  • the collecting reservoir 61 rests upon a lower reservoir 63, which is mounted on the base 20 of the mobile support trolley 2, which reservoir 63 contains a washing liquid, typically water or possibly water mixed with a detergent substance.
  • a washing liquid typically water or possibly water mixed with a detergent substance.
  • the lower reservoir 63 is connected via a flexible tube 64 to one or more dispensing nozzles of the cleaning liquid (not shown), which are attached to the rigid frame 3 at the cleaning organ 50.
  • the dispensing nozzles are connected to the lower reservoir 63 by at least a flexible conduit, denoted by 64 in figure 4 , along which a manual check valve (not visible) is generally located for regulating the flow of cleaning liquid which normally flows from the lower reservoir 63 towards the dispensing nozzles, simply by force of gravity.
  • the floor-cleaning group 7 comprises two thin flexible blades 70, made of a coherent material, preferably rubber, which are oriented vertically so as to be arranged with edges thereof against the floor.
  • the flexible blades 70 are perfectly facing one another and have horizontal lower edges located substantially at a same height, such as to be contemporaneously in contact with the floor along the whole longitudinal development thereof.
  • the flexible blades 70 develop transversally with respect to the trolley 2, from which they project on both lateral flanks, and exhibit a plan profile which is substantially crossbow-shaped, with the concavity thereof facing in the forwards direction.
  • the flexible blades 70 are joined together at the ends and are kept separate by a rigid framework 71, which defines a space that is open at a bottom thereof and closed at the top thereof (see figure 6 ).
  • a connector 73 is associated to the rigid framework, which connector 73 terminates within the space 72 and is connected to the second flexible pipe 62 coming from the collecting reservoir 61.
  • the rigid framework 71 is borne on a central plate 74, to which it is removably joined in order to enable replacement of the floor-cleaning group 7 when the flexible blades 70 are worn.
  • a raised block 75 is welded to the central plate 74, to which the ends of two superposed con rods 76 are hinged, the con rods 76 being of equal length and parallel to one another, opposite ends of which are hinged to a support 77 fixed below the base 20 in the rear part of the trolley 2 (see figure 5 ).
  • the hinge axes of the con rods 76 with the block 75 and the support 77 are horizontal, such that the con rods 76 define a four-bar hinge enabling the floor-wiping group 7 to perform vertical movements of the floor-cleaning group 7, keeping the flexible blades 70 parallel to themselves.
  • the four-bar hinge enables the floor-wiping group 7 to be moved between a work position, in which the flexible blades 70 are in contact with the floor, and a rest position, in which the flexible blades 70 are raised and are not in contact with the floor.
  • a permanent magnet 26 is fixed on the trolley 2, which can be substituted by an electromagnet or like magnetic means, which magnet 26 is positioned such as to contactingly receive the upper con rod 76 of the four-bar hinge when the floor-cleaning group 7 is in the raised rest position.
  • the magnetic attraction exerted by the magnet 26 on the ferro-magnetic material of the con rod 76 enables the floor-cleaning group 7 to be effectively blocked in the rest position, for example when the floor-cleaning machine 1 is not being used.
  • the floor-cleaning group 7 comprises a shaped lever 78, which is fixed on the rigid frame 71 and develops in an upwards direction, such as to make available a comfortable grip for a user who, by acting on the shaped lever 78, can overcome the magnetic force exerted by the magnet 26 and unblock the floor-cleaning group 7 from the rest position, leaving it to rest by force of gravity on the floor, thus moving into the work position.
  • the floor-cleaning group is guided on the floor by the user who walks behind it, gripping the rear transverse bar 31 of the tilting frame 3.
  • the tilting frame 3 is in the configuration illustrated in figure 1 , where the operating group 5 is in a lowered work position in which the bristles of the rotating brush are frontally in contact with the floor.
  • This work position is maintained thanks to the weight of the operating group 5 and the suction group 6, which tend to cause the tilting frame 3 to rotate in a clockwise direction C, i.e. in the direction corresponding to a lowering of the forward transverse bar, pressing the rotating brush 50 down onto the floor.
  • the floor-cleaning group 7 is also in a lowered work position, with the flexible blades 70 both in contact with the floor.
  • the work position of the floor-cleaning group 7 is maintained thanks to the weight of the group itself, which acts in the direction of pressing the flexible blades 70 onto the floor.
  • the rotating brush 50 is rotated by the gear reducers 51, and at the same time the suction group 6 is activated, which places the collecting reservoir 61 in depression and, via the flexible conduit 62, also the space 71 defined between the flexible blades 70 of the floor-cleaning group 7.
  • the liquid is dispensed directly onto to bristles of the rotating brush 50 such that the scrubbing action of the brush 50 and the detergent action of the liquid enable the dirt to be removed from the floor.
  • the liquid mixed with dirt is then swept and collected by the flexible blades 70 which drag on the floor, and filters into the space 72, from where it is aspirated internally of the collecting reservoir 61.
  • the telescopic arm 4 blocks by effect of the stop means thereof, such that the position is maintained even if the user lets go of the grip.

Landscapes

  • Cleaning In General (AREA)
EP08173063A 2008-01-15 2008-12-30 Machine de nettoyage de sol Withdrawn EP2080468A2 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000006A ITRE20080006A1 (it) 2008-01-15 2008-01-15 '' lavapavimenti ''

Publications (1)

Publication Number Publication Date
EP2080468A2 true EP2080468A2 (fr) 2009-07-22

Family

ID=40290283

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08173063A Withdrawn EP2080468A2 (fr) 2008-01-15 2008-12-30 Machine de nettoyage de sol

Country Status (4)

Country Link
US (1) US20090178228A1 (fr)
EP (1) EP2080468A2 (fr)
CN (1) CN101487240A (fr)
IT (1) ITRE20080006A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013017167A1 (fr) * 2011-08-02 2013-02-07 Alfred Kärcher Gmbh & Co. Kg Machine mobile de nettoyage des sols et procédé permettant de faire fonctionner une machine de nettoyage des sols
EP4275568A1 (fr) * 2022-05-10 2023-11-15 Hako GmbH Machine de nettoyage du sol à guidage manuel dotée d'un support de pied d'aspiration

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109106291A (zh) * 2016-11-24 2019-01-01 卢思雨 用于理发店自动清理碎头发的装置
CN109208516A (zh) * 2017-07-06 2019-01-15 广元公正科技有限公司 除去地面污迹、标识的设备
CN114129099A (zh) * 2021-12-31 2022-03-04 苏州威摩尔智能科技有限公司 一种用于洗地机的地刷及洗地机

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EP1729622B1 (fr) * 2004-03-05 2012-05-09 Tennant Company Couplage de racloir arriere simplifie pour equipement de nettoyage de surface
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USD549405S1 (en) * 2006-03-27 2007-08-21 Alfred Kaercher Gmbh & Co. Kg Vacuum trash collection vehicle
USD571434S1 (en) * 2006-12-14 2008-06-17 Alfred Kaercher Gmbh & Co. Kg Hand-operated spray gun for a high pressure washer

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013017167A1 (fr) * 2011-08-02 2013-02-07 Alfred Kärcher Gmbh & Co. Kg Machine mobile de nettoyage des sols et procédé permettant de faire fonctionner une machine de nettoyage des sols
CN103717117A (zh) * 2011-08-02 2014-04-09 阿尔弗雷德·凯驰两合公司 可行驶的地板清洁机和用于操作地板清洁机的方法
US9456727B2 (en) 2011-08-02 2016-10-04 Alfred Kärcher Gmbh & Co. Kg Drivable floor cleaning machine and method for operating a floor cleaning machine
EP4275568A1 (fr) * 2022-05-10 2023-11-15 Hako GmbH Machine de nettoyage du sol à guidage manuel dotée d'un support de pied d'aspiration

Also Published As

Publication number Publication date
US20090178228A1 (en) 2009-07-16
CN101487240A (zh) 2009-07-22
ITRE20080006A1 (it) 2009-07-16

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