DE102007037558B4 - Device for cleaning ice and snow from power lines - Google Patents

Device for cleaning ice and snow from power lines

Info

Publication number
DE102007037558B4
DE102007037558B4 DE102007037558.3A DE102007037558A DE102007037558B4 DE 102007037558 B4 DE102007037558 B4 DE 102007037558B4 DE 102007037558 A DE102007037558 A DE 102007037558A DE 102007037558 B4 DE102007037558 B4 DE 102007037558B4
Authority
DE
Germany
Prior art keywords
device
obstacle
characterized
disc
cleaned
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.)
Expired - Fee Related
Application number
DE102007037558.3A
Other languages
German (de)
Other versions
DE102007037558A1 (en
Inventor
Patentinhaber gleich
Original Assignee
Borys Tashlyk
Oleksandr Tashlyk
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 Borys Tashlyk, Oleksandr Tashlyk filed Critical Borys Tashlyk
Priority to DE102007037558.3A priority Critical patent/DE102007037558B4/en
Publication of DE102007037558A1 publication Critical patent/DE102007037558A1/en
Application granted granted Critical
Publication of DE102007037558B4 publication Critical patent/DE102007037558B4/en
Application status is Expired - Fee Related legal-status Critical
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G7/00Overhead installations of electric lines or cables
    • H02G7/16Devices for removing snow or ice from lines or cables
    • HELECTRICITY
    • H02GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02GINSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
    • H02G1/00Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines
    • H02G1/02Methods or apparatus specially adapted for installing, maintaining, repairing or dismantling electric cables or lines for overhead lines or cables

Abstract

Apparatus for cleaning electric high-voltage lines (20) of snow and ice, comprising a housing (1), an electric motor (15), a control system (7), an accumulator (11), rollers (4) which move the device along the power line (20) to be cleaned, and with a tool for removing snow and ice, characterized by probes (18, 22, 22 ') for detecting obstacles and a two-sector disc drill (2) with a Bearing (3), wherein the disc drills (2) form the rotatably mounted around the power line to be cleaned (20) tool, the device for interrupting the rotation of the tool of the disc drill (2) upon reaching an obstacle (23, 23 ') and for pushing the bearing (3) apart when the device moves through the obstacle (23, 23') to a size greater than the width of the obstacle (23, 23 ') along its circumference.

Description

  • The invention belongs to the field of equipment for the cleaning of power lines of ice and snow. Devices are known for cleaning electrical power lines of ice and snow consisting of a rope that is thrown over the line to be cleaned. The workers pull this rope and clean the line of ice and snow.
  • DE 20 2005 018 756 U1 discloses a de-icing system for power lines consisting of a nacelle with at least two wheels, a power generator, a de-icing device and a remote control device. The nacelle can drive along the rope by means of at least one driven impeller. A deicing device is attached to the nacelle, which defrosts an ice layer on the current rope or removes it by mechanical action.
  • US 2006/0150857 A1 and US 6,494,141 B2 discloses a remote-controlled device for deicing high-voltage lines with a gondola suspended by means of wheels on the high-voltage line and with de-icing blades on the wheels.
  • In DE 39 37 928 A1 is a cleaning device for cleaning a round profile, in particular a rope described that can be placed without separation of the rope on the rope and dropped from the rope. It has a serving for guiding the device on the rope trolley, which is connected via a flange fixed to a drive motor. The motor drives a gear drive, which moves at least one brush circularly around the rope.
  • In DE 1 003 790 A a device for detaching a frost and ice layer by heat on catenaries of electric traction vehicles is described. The current return device to the traction unit is equipped for this purpose with a heat radiator.
  • US 4,904,996 A discloses a device for monitoring parameters of high voltage lines with a front and a rear drive module and an intermediate measuring module to overcome an intermediate suspension of the high voltage line, the rear propulsion module is released from the high voltage line and hung on the other side behind the suspension on the high voltage line.
  • WO 2004/000473 A1 discloses a device for treating a rope held between two stops with a drive source and a treatment element. The device is moved along the rope due to frictional forces caused by the sliding movement of the treatment element. Around the circumference of the rope brushes are arranged, with which the device brushes the surface to rotate itself around the rope.
  • In DE 3 707 76 A An overhead line scraper is described in which a sleeve comprises the lead wire and can be moved back and forth on the lead wire for ice removal.
  • JP H04 299 013 A shows a device for removing ice and snow from a power line. The device is suspended by impellers on a high voltage line. It has a brush rotating around the power line and a sprinkler for applying hot water to melt ice and snow
  • In JP H05 176 441 A a device for removing ice and snow from a power line with a trolley is described, which rests on the top and bottom of the high-voltage line to be cleaned.
  • Out DE 2 324 387 A For example, there is known a deicing apparatus for surface deicing of wireline having means for generating pulses of an electromagnetic field. These pulses are generated successively in the time intervals in the immediate vicinity of the surface to be deiced to cause elastic deformation. The pulse generating means is arranged on a trolley wire pickup.
  • US 1,057,179 A shows a de-icing device for the removal of ice from pipes. The de-icing device has an impeller with internal knife teeth, which rolls on the line to be cleaned. The opposite halves of the impeller are stretched towards each other by a spring.
  • In US 4,212,378 A is described a device for deicing of high voltage power lines, which is hung with an impeller on the high voltage for cleaning the high voltage line. The cleaning device hangs down the impeller to clean the high voltage line at the bottom.
  • These known solutions have the disadvantage that they can not handle the passage of the devices through the location of a transition to a support from one line to another. You can only remove the ice in the length of the distance between two supporting columns.
  • DE 20 2006 006 980 U1 discloses a device for the removal of ice and snow from High voltage power lines, consisting of two panes, exposed from both sides of a dia. The passage through an obstacle, such as a suspension of the high voltage line succeeds through an opening in the upper region of the half-discs, which is completed with successive Halbbürsten.
  • Based on this, it is an object of the present invention to provide an improved device for cleaning electrical power lines of snow and ice, with which an obstacle can be safely passed.
  • The object is achieved by the device having the features of claim 1 and by the device having the feature of claim 10. Advantageous embodiments are described in the subclaims.
  • The task is solved by:
  1. 1. A disk drill ( 2 ) with a tooth drive wheel consisting of two sectors on the rear side of the disc drill ( 2 ) for the rotating movement of the disc drill ( 2 ) is available. This significantly reduces the driving force.
  2. 2. When approaching an obstacle, the device stops rotating the disc drills ( 2 ) and then, after passing the obstacle, the disc drill ( 2 ) turned again.
  3. 3. To better overcome obstacles, a device may consist of two devices connected in a system. The second device ensures the movement of the device when the first device is also partially open and overcomes an obstacle. The first device ensures the work of the device in the passage of the obstacle with the second device. The devices are interconnected by a mechanism in which the center of the disc drills lowers to that size that allows the passage of the obstacle. Both devices are connected to a common control system.
  4. 4. The disc drills 2 move with manual drive as well as with automatic drive. If necessary, the disc drill 2 is provided with an individual motor.
  • The invention will be explained in more detail with reference to an embodiment with the accompanying drawings.
  • In 1 is the scheme of two identical devices for cleaning high voltage power lines 20 represented by snow and ice. The devices each have a housing 1 . 1' as well as writing drills 2 . 2 '. The devices are with a mechanism 26 . 26 ' connected to a device. They are probes 22 . 22 ' present, which is an interruption of turning the disc-drill 2 . 2 ' guarantee. mechanisms 24 . 24 ' serve to lower the center of the disk drills 2 . 2 ' in the passage through an obstacle 23 . 23 ' , They are limiters 25 . 25 ' the size of the lowering of devices in overcoming the obstacles 23 . 23 ' available.
  • 1 shows the scheme of two symmetrically arranged devices.
  • 2 shows a device in front view with the housing 1 , the disc-drill 2 , a plain bearing 3 , which is specially designed to unfold. They are roles 4 with a drive wheel on its forming circle as well as a carrying spring 5 and a judging nest 6 for the spring 5 available. The device has a control system 7 in the form of a block of electronic control and a remote control 8th for remote operation of the device. Furthermore, there is a mechanism 9 for opening the device with a motor 10 for the mechanism 9 to open the device available. The device also has an accumulator 11 , a brush 12 on the disk drill 2 , Axes 13 for the roles 4 as well as driven drive wheels 14 for the axis of the rollers 4 , Furthermore, an electric motor 15 and a leading driving wheel 16 the electric motor available. The mechanism 9 for unfolding the device 1 has a supporting axis 17 ,
  • At the top of the case 1 is a probe 18 for the elimination and orientation of the disc drill 2 arranged. The device is on a high voltage line to be cleaned 20 placed. In the 3 recognizable axes 21 connect the opposing devices to a device. They form the mechanism 26 . 26 ' , as in 1 is shown.
  • 4 and 5 show the feathers 5 to carry the construction. The feather 5 forms the supporting part for the plain bearing 3 and the disc-drills 2 , The feather 5 has a bearing part of a limiter 31 for sliding attachment of the spring pressed apart 5 ,
  • In 5 is an opening 32 for the axes of the rollers 4 to recognize.
  • 6 . 7a ) and 7b) show the sliding bearing 3 which is designed as a special support. The in 4 and 5 recognizable limiters 31 Determines the location of the disk drills 2 in a certain situation. Out 7a ) are the openings 32 for the axles 13 the roles 4 to recognize.
  • 8th shows the construction of the roll 4 with a drive wheel 44 and the axis 13 ,
  • 9 and 10 let the construction of the disc drill 2 with the driven rollers 4 and recognize a bushing made of non-conductive material. Here are the disc drills 2 , the back part 25 the disc-drill 2 with the driven rollers 4 and wear-resistant brushes 27 to recognize.
  • The sizes (sizes) of all the details (parts) and the mechanisms are coordinated and ensure easy installation and a smooth flow.
  • The motor 15 gets the signal from an electrical control and passes the movement through the leading drive wheel 16 on the role 4 and from there to the drive wheel of the disc drills 2 , The disc drill 2 Drills and cuts while rotating on the high voltage line 20 moving the snow and ice from the surface of the power line 20 from.
  • When approaching an obstacle ( 23 . 23 ' ) sends the probe 18 (please refer 2 ) a signal to the mechanism 9 for unfolding the device. The disc drill 2 is at his top (see. 9 ) with the change of the circumference K (cf. 10 ), and the center of the disc drill 2 is lowered, which allows overcoming the obstacle.
  • After overcoming the obstacle, the device closes after the signal of the probe 18 and the system continues to operate in the normal regime.
  • The movement of the system (installation) during the interruption of the rotation of the disk drills 2 is realized by the device. Upon reaching the obstacle ( 23 . 23 ' ) through the device, as well as the device, the device is also moved apart and overcomes the obstacle ( 23 . 23 ' ).
  • 11 shows the scheme of overcoming an obstacle from the device. Here is the device, the high voltage line 20 , a follower 23 for the high voltage line 20 (the obstacle), the axis 24 the mechanism for lowering the device, a limiter 25 . 25 'for limiting the angle of the inclination of the axis 24 to recognize. The second device is identical and symmetrical to the device.
  • 12 shows the scheme of overcoming the obstacle 23 in front view AA. Here is the high voltage line 20 , the disc-drill 2 in the open position, the device in the open position, the obstacle 23 , the second identical device as well as brushes 27 to recognize the device.
  • 13 shows a scheme in which the location of the devices after overcoming the obstacle 23 from the device is visible. It is the first device (installation / installation), the obstacle 23 , the second device and the axles 24 to recognize the mechanism for lowering and lifting the center of the devices in the horizontal position.
  • 14 and 15 Make drawings of overcoming the obstacle 23 from the device.
  • 16 shows a schematic representation of a device in which the rollers 4 be divided into two groups, the first group of roles 4 ' ensure a secure attachment of the device on the high voltage line 20 , They are arranged vertically. They consist of two parts a and a ', where a' is mirror-like with a. When overcoming an obstacle 23 They are unfolded together with the housing of the device in two identical symmetrical parts (wheels).
  • The second group of roles 4 ensures the movement of the device and is arranged horizontally. It is a mechanism 35 provided the roles 4 ' in overcoming an obstacle 23 apart folds. The roles 4 ' are on one axis each 36 arranged.
  • Claims (11)

    1. Apparatus for cleaning electric high-voltage lines (20) of snow and ice, comprising a housing (1), an electric motor (15), a control system (7), an accumulator (11), rollers (4) which move the device along the power line (20) to be cleaned, and with a tool for removing snow and ice, characterized by probes (18, 22, 22 ') for detecting obstacles and a two-sector disc drill (2) with a Bearing (3), wherein the disc drills (2) form the rotatably mounted around the power line to be cleaned (20) tool, the device for interrupting the rotation of the tool of the disc drill (2) upon reaching an obstacle (23, 23 ') and for pushing the bearing (3) apart when the device moves through the obstacle (23, 23') to a size greater than the width of the obstacle (23, 23 ') along its circumference.
    2. Device after Claim 1 , characterized in that on the rear part (25) of the disc-drill (2) symmetrical sectors of the rollers formed as a conical drive (4) are arranged.
    3. Device after Claim 1 or 2 , characterized in that the two-sector disc-drill (2) in the upper part with two brushes (12) is connected.
    4. Device according to one of Claims 1 to 3 , characterized in that the device has a converter for converting the electric field around the high voltage lines (20) into an electric current for charging the accumulator (11).
    5. Device according to one of the preceding claims, characterized in that the disc drill (2) has an individual drive motor.
    6. Device according to one of the preceding claims, characterized in that the device has a water-repellent cap for covering the upper side of the device, the cap for pushing apart when an obstacle (23, 23 ') is overcome and moving together after overcoming the obstacle (23, 23'). ) is trained.
    7. Device according to one of the preceding claims, characterized in that the tool for removing snow and ice is formed as a cutting tool and consists of two or more rotating drills which are arranged on at least two sides of the high-voltage line (20) to be cleaned.
    8. Device according to one of the preceding claims, characterized in that the device has more than two horizontally arranged rollers (4) for the further development of the device along the high-voltage line (20) to be cleaned.
    9. Device according to one of the preceding claims, characterized in that the rollers (4) are divided into two groups along the high-voltage line (20) to be cleaned in order to facilitate the movement of the device, the first group of rollers (4 ') being arranged vertically, securing the device to the high-voltage line (20) to be cleaned and, together with the housing (1), folding into two equal symmetrical parts, and wherein the second group of rollers (4) is arranged horizontally and ensures the movement of the device.
    10. Device for cleaning high-voltage electrical power lines (20), characterized in that two devices according to one of the preceding claims are interconnected by a mechanism (26, 26 '), the mechanism (26, 26') for lowering the center of the disk Drill (2) on a for overcoming an obstacle (23, 23 ') when passing the obstacle (23, 23') necessary size is set up.
    11. Device after Claim 10 , characterized in that the two devices operate synchronously by their individual control systems (7).
    DE102007037558.3A 2007-08-09 2007-08-09 Device for cleaning ice and snow from power lines Expired - Fee Related DE102007037558B4 (en)

    Priority Applications (1)

    Application Number Priority Date Filing Date Title
    DE102007037558.3A DE102007037558B4 (en) 2007-08-09 2007-08-09 Device for cleaning ice and snow from power lines

    Applications Claiming Priority (1)

    Application Number Priority Date Filing Date Title
    DE102007037558.3A DE102007037558B4 (en) 2007-08-09 2007-08-09 Device for cleaning ice and snow from power lines

    Publications (2)

    Publication Number Publication Date
    DE102007037558A1 DE102007037558A1 (en) 2009-06-10
    DE102007037558B4 true DE102007037558B4 (en) 2018-11-29

    Family

    ID=40620933

    Family Applications (1)

    Application Number Title Priority Date Filing Date
    DE102007037558.3A Expired - Fee Related DE102007037558B4 (en) 2007-08-09 2007-08-09 Device for cleaning ice and snow from power lines

    Country Status (1)

    Country Link
    DE (1) DE102007037558B4 (en)

    Families Citing this family (7)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    CN105186369B (en) * 2015-09-24 2017-07-28 江苏省电力公司仪征市供电公司 A kind of method for cleaning using with the cleaning plant of foreign matter on layer aerial cable
    CN106410721A (en) * 2016-09-29 2017-02-15 国网江苏省电力公司徐州供电公司 High-voltage cable deicing device
    CN107800100B (en) * 2016-10-10 2020-01-03 国家电网有限公司 Cable deicing device
    CN106786300B (en) * 2016-12-09 2018-04-03 常州刘国钧高等职业技术学校 A kind of power equipment ice-snow clearing device
    CN107611904B (en) * 2017-09-20 2019-01-08 国网河北省电力有限公司石家庄市鹿泉区供电分公司 A kind of explosion deicer with ammunition loading mechanism
    CN107370107B (en) * 2017-09-20 2018-12-25 国网河北省电力有限公司石家庄市鹿泉区供电分公司 A kind of rapid deployment formula deicer for power transmission line
    CN109378787A (en) * 2018-10-25 2019-02-22 镇江华驰电器有限公司 Ice structure is hit in a kind of cable de-icing device

    Citations (14)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    US1057179A (en) 1911-11-01 1913-03-25 Charles J Smith Sleet-cutter.
    DE370776C (en) 1923-03-06 Arthur Johnson Freileitungsraeumer
    DE1003790B (en) 1952-02-07 1957-03-07 Siemens Ag Means for detaching a layer of frost and ice by heat on contact lines of electric rolling stock, in particular lifting gear
    DE2324387A1 (en) 1973-05-14 1974-11-28 Igor Anatolewitsch Lewin deicing
    US4212378A (en) 1978-06-26 1980-07-15 Hrovat Henry J Device for de-icing power cables
    US4904996A (en) 1988-01-19 1990-02-27 Fernandes Roosevelt A Line-mounted, movable, power line monitoring system
    DE3937928A1 (en) 1989-11-15 1991-05-16 Asea Brown Boveri Cleaning machine to clean ropes and cables - has crab connected to drive and guide on cable
    JPH04299013A (en) 1991-03-12 1992-10-22 Mitsubishi Electric Corp Ice/snow removing deivce for power-transmission line
    JPH05176441A (en) 1991-12-19 1993-07-13 Hitachi Cable Ltd Device for taking ice and snow off cable
    US6494141B2 (en) 2000-02-22 2002-12-17 Hydro-Quebec Remotely operated vehicle for inspection and intervention of a live line
    WO2004000473A1 (en) 2002-06-21 2003-12-31 Neumeyer Erwin S Device and method for treating a cable
    DE202005018756U1 (en) 2005-12-01 2006-02-09 Rohrer, Emil Deicer for power supply line, has housing driven along flow cable by impeller, and defrosting device attached in housing for defrosting ice layer on cable by mechanical effect such as by oppressive rolls pressing against each other
    US20060150857A1 (en) 2003-02-04 2006-07-13 Nicolas Pouliot Remote-controlled vehicle which travels on conductors and which can pass over obstacles by means of temporary support rotors
    DE202006006980U1 (en) 2006-05-03 2006-08-31 Tashlyk, Borys Ice and snow removal device for use on high and low voltage lines, has two plates which are exposed from both sides of dielectric case, and mechanism for moving device along wire using rollers

    Family Cites Families (1)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    ZA7705656B (en) 1977-09-21 1979-04-25 E Scragg Dosing a flowing fluid

    Patent Citations (14)

    * Cited by examiner, † Cited by third party
    Publication number Priority date Publication date Assignee Title
    DE370776C (en) 1923-03-06 Arthur Johnson Freileitungsraeumer
    US1057179A (en) 1911-11-01 1913-03-25 Charles J Smith Sleet-cutter.
    DE1003790B (en) 1952-02-07 1957-03-07 Siemens Ag Means for detaching a layer of frost and ice by heat on contact lines of electric rolling stock, in particular lifting gear
    DE2324387A1 (en) 1973-05-14 1974-11-28 Igor Anatolewitsch Lewin deicing
    US4212378A (en) 1978-06-26 1980-07-15 Hrovat Henry J Device for de-icing power cables
    US4904996A (en) 1988-01-19 1990-02-27 Fernandes Roosevelt A Line-mounted, movable, power line monitoring system
    DE3937928A1 (en) 1989-11-15 1991-05-16 Asea Brown Boveri Cleaning machine to clean ropes and cables - has crab connected to drive and guide on cable
    JPH04299013A (en) 1991-03-12 1992-10-22 Mitsubishi Electric Corp Ice/snow removing deivce for power-transmission line
    JPH05176441A (en) 1991-12-19 1993-07-13 Hitachi Cable Ltd Device for taking ice and snow off cable
    US6494141B2 (en) 2000-02-22 2002-12-17 Hydro-Quebec Remotely operated vehicle for inspection and intervention of a live line
    WO2004000473A1 (en) 2002-06-21 2003-12-31 Neumeyer Erwin S Device and method for treating a cable
    US20060150857A1 (en) 2003-02-04 2006-07-13 Nicolas Pouliot Remote-controlled vehicle which travels on conductors and which can pass over obstacles by means of temporary support rotors
    DE202005018756U1 (en) 2005-12-01 2006-02-09 Rohrer, Emil Deicer for power supply line, has housing driven along flow cable by impeller, and defrosting device attached in housing for defrosting ice layer on cable by mechanical effect such as by oppressive rolls pressing against each other
    DE202006006980U1 (en) 2006-05-03 2006-08-31 Tashlyk, Borys Ice and snow removal device for use on high and low voltage lines, has two plates which are exposed from both sides of dielectric case, and mechanism for moving device along wire using rollers

    Also Published As

    Publication number Publication date
    DE102007037558A1 (en) 2009-06-10

    Similar Documents

    Publication Publication Date Title
    DE10317479B4 (en) Cleaning system for photovoltaic generators and solar collectors
    US7559994B2 (en) Device and process for cleaning electrified contact rail insulators for rail rapid transit systems
    WO2010111326A1 (en) Power line de-icing apparatus
    EP2752621A2 (en) Apparatus for maintaining wind turbine blades
    US7703169B2 (en) Snow removal and deicing device for windshield wiper
    CN104882822A (en) Automatic transmission line cleaning device
    DE102010006531A1 (en) Device for cleaning surfaces, particularly for cleaning of solar panel disks, namely for attainability of permanent increase of efficiency of solar panel, has cleaning robot which is axially along X-axis by guide rail
    CN106994449A (en) A kind of host computer mainboard dust arrester
    CN103331272B (en) Washing machine for post insulator
    KR100589641B1 (en) The cleaning method and the robot to clear an insulator
    CN201415716Y (en) Robot walking device capable of surmounting lead obstacles
    AU2014311982B2 (en) Descent control and energy recovery system for solar panel cleaning system
    CA1175449A (en) Means for removing snow from road
    US1197763A (en) Window-cleaner.
    CN102255270A (en) Power transmission line cone cutter head milling and extrusion deicing method and apparatus thereof
    JP6114831B2 (en) Solar power panel cleaning equipment
    CN104882841B (en) A kind of device for expelling ice and snow of transmission line of electricity
    US20130133145A1 (en) Self-propelled apparatus for cleaning a submerged surface
    CA2550409A1 (en) Snow removal and deicing system for windshield wiper
    PT1500815E (en) Device for the mechanical, in service cleaning of wind turbine blades.
    CN104917130B (en) A kind of line walking deicing robot and its obstacle-detouring method
    US8857451B2 (en) Device to remove snow from large vehicles
    CN104393526B (en) A kind of single conductor foreign body intelligence block removing coaster
    CN203498791U (en) Efficient and energy-saving snow sweeper
    CN101320899A (en) Deicing machine for aerial cable

    Legal Events

    Date Code Title Description
    OM8 Search report available as to paragraph 43 lit. 1 sentence 1 patent law
    OP8 Request for examination as to paragraph 44 patent law
    8122 Nonbinding interest in granting licences declared
    R016 Response to examination communication
    R016 Response to examination communication
    R082 Change of representative

    Representative=s name: GRAMM, LINS & PARTNER PATENT- UND RECHTSANWAEL, DE

    R016 Response to examination communication
    R016 Response to examination communication
    R018 Grant decision by examination section/examining division
    R119 Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee