AU2006222451B2 - Abseiling device having a winch function - Google Patents
Abseiling device having a winch function Download PDFInfo
- Publication number
- AU2006222451B2 AU2006222451B2 AU2006222451A AU2006222451A AU2006222451B2 AU 2006222451 B2 AU2006222451 B2 AU 2006222451B2 AU 2006222451 A AU2006222451 A AU 2006222451A AU 2006222451 A AU2006222451 A AU 2006222451A AU 2006222451 B2 AU2006222451 B2 AU 2006222451B2
- Authority
- AU
- Australia
- Prior art keywords
- abseiling
- unit
- shaft
- gearwheel
- locking
- 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.)
- Ceased
Links
Classifications
-
- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B1/00—Devices for lowering persons from buildings or the like
- A62B1/06—Devices for lowering persons from buildings or the like by making use of rope-lowering devices
- A62B1/08—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys
- A62B1/10—Devices for lowering persons from buildings or the like by making use of rope-lowering devices with brake mechanisms for the winches or pulleys mechanically operated
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Emergency Lowering Means (AREA)
- Storing, Repeated Paying-Out, And Re-Storing Of Elongated Articles (AREA)
- Telescopes (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Steering Control In Accordance With Driving Conditions (AREA)
- Earth Drilling (AREA)
- Storage Of Web-Like Or Filamentary Materials (AREA)
Abstract
An abseiling device (1) having winch function comprising a guide roller and by virtue of the common shaft (3) of the guide roller (2) and large gearwheel (4) being able to be locked positively. The guide roller is mounted so that it can rotate in both directions. The guide roller is intended for the non-slip guidance of a rope element (15), a transmission mechanism with a centrifugal brake (7), the large gearwheel of which mechanism is mounted securely against torque on a common shaft with the guide roller, and a hand crank (8) for manually actuating the winch function, which acts on the drive shaft (6) of the small gearwheel (5) of the transmission mechanism.
Description
00 0Abseiling unit with a winding function o Technical Field z _The invention relates to an abseiling unit with a winding function.
Background For rescuing persons from elevated locations, for example from burning high- Srise buildings, from towers, scaffolding or the like, it is known to provide O abseiling units for use at the elevated locations, in the case of which abseiling units the person to be rescued is secured to a traction means, for example a rope, which is guided in a non-slip fashion in the abseiling unit. When the traction means is loaded with the weight of the person to be rescued, the traction means runs over a guide roller of the abseiling unit, with a brake provided on the abseiling unit limiting the abseiling speed. As a result, it is possible for a person to abseil from an elevated location in a controlled fashion without external aid and without using their own physical strength. Abseiling units of said type often have a step-up transmission so as to provide a quickly rotating shaft which is connected to the brake, and a slowly rotating shaft which supports the guide roller.
An abseiling unit which can be suspended at a fixed location by means of a hook, and in which a traction rope, which is guided in a non-slip fashion over a guide roller, is braked by virtue of the guide roller being connected to a centrifugal brake by means of a step-up transmission, is known from DE 198 18 688 C1.
A lifting and rescuing unit (working unit with a winding function), in which the positive locking of a rope drum (guide roller) is provided by virtue of a latching bolt engaging in notches formed on the rope drum, is known from CH 364 180 A.
An abseiling unit mentioned above is known from DE 102 10 969 Al. Here, the quickly rotating shaft extends through a housing of the abseiling unit, and is N:Sydncy\Cas\Patent\62DO 2999\P62979 AUSpecis\P62979 Annded Spcct ns iled ~eitb Rcsponse 2008-11
IND
\O
provided with a hand crank. As a result, the quickly rotating shaft becomes a drive shaft. The abseiling unit is, as a result, augmented by an additional winding function which utilizes the step-up transmission ratio between the guide n roller shaft and the braking and drive shaft. An abseiling unit which is augmented with a winding function in this way is significantly more versatile with regard to the situations which occur when rescuing persons. An assistant can thus initially utilize the winding function in order to pull up a person who has Sfallen into a shaft or onto a step situated at a lower level, and then abseil said IDperson quickly and reliably by means of the abseiling function. There is also the option of a person lifting themselves up to an elevated location by virtue of the abseiling unit being fixed to the body of the person to be lifted, and being operated by the person themselves. Here, the abseiling function ensures constant safety should the person who is lifting themselves have an accident at the elevated location or during the lifting process. After releasing the hand crank, the person would then be abseiled by means of the abseiling function without them having to put in any more effort.
In both DE 102 10 969 Al and CH 364 180 A, the hand crank and locking mechanism are in each case arranged on the same side of the transmission, at the output side of a single-stage spur gear transmission in DE 102 10 969 Al, and at the input side of a two-stage spur gear transmission in CH 364 180 A.
It is likewise known from DE 102 10 969 Al that a blocking device, which acts on the quickly rotating drive shaft, is provided on the hand crank for the purpose of controlling the abseiling unit. Said device permits particularly favorable operation of the winding function since, by engaging a blocking bolt, the user can release the abseiling unit even when a load is hanging from it, without this resulting in the load being abseiled. The arrangement of the positive locking mechanism at the quickly rotating drive shaft results, however, in a high risk of wear, and therefore a grave safety problem, on account of the high rotational speeds at said device part.
N Melboumnc\Cles\Palent\62000-62999\P62979AUSpecisT62979 (MITELMANN)-Amended Spcification.DOC 15/12106 00 A hand winder, in which a blocking catch enabling switch for hand winders having two blocking wheels, which are arranged adjacent to one another and 0 z provide retardation in opposite directions, is formed, is known from DE 177 841 A, in which, by throwing a shift lever into one or the other inclined position, one of the two blocking catches is engaged, and the other blocking catch is simultaneously disengaged. Here, the shift lever, which can be fixed into either inclined position, engages, by means of pins which are attached at Sboth sides, into slots of the blocking catches, resulting in simultaneous IDengagement and disengagement of the catches.
Summary of the Invention According to a first aspect, the invention provides an abseiling unit for a traction cable, comprising a guide roller for non-slip guidance of said traction cable, the guide roller being rotatable in two rotational directions, a step-up transmission comprising a small gearwheel and a large gearwheel, and a hand crank for manually performing a winding function, wherein the hand crank engages on a drive shaft of the small gearwheel, wherein the large gearwheel is mounted in a torque-secure manner on a common shaft with the guide roller, wherein a locking unit is provided for positively locking of said step-up transmission in a loaded rotational direction, and wherein the step-up transmission is freely rotatable in a direction opposed to the loaded rotational direction.
According to another aspect, the invention provides an abseiling unit with a winding function, comprising a guide roller, which is mounted so as to be rotatable in both directions, for non-slip guidance of a traction means; N:\Sydney'Cases\Paiern\62000-62999\62979.AL\Spcis\P62979 Amended Speci as filed with Response 2003-1I-OSDOC 00 -a step-up transmission which comprises a centrifugal brake and whose large gearwheel is mounted in a torque-secure manner on 0 za common shaft with the guide roller; and wherein the common shaft of the guide roller and the large gearwheel can be positively locked; and a hand crank, which engages on the drive shaft of the small gearwheel of the step-up transmission, for performing the winding Sfunction manually.
IND
Thus, the functions of the hand crank and of the locking action are distributed between the input side and the output side. The arrangement of a positive locking device on the slowly rotating common shaft of the guide roller and the large gearwheel has the advantage that, in conventional designs of step-up transmissions, the rotational speed of said common shaft is approximately one order of magnitude lower than that of the drive shaft of the small gearwheel, and therefore the problem of wear is decisively reduced and the safety risk is eliminated.
In one particular embodiment, the locking action can be switched to act in either rotational direction. This has the advantage that the locking action can be changed between a winding function and an abseiling function by means of a simple hand grip, without it being necessary to release the unit. Said option is very helpful and advantageous, for example, in a situation in which the person to be rescued is hanging from the retaining rope prescribed by the occupational safety regulations.
In order to be able to decouple the retaining rope from the person to be rescued, the retaining rope must initially be relieved of the load (weight) of the person hanging from it. The winding function of the abseiling unit is utilized for this purpose.
Before the retaining rope is decoupled, the abseiling unit is positively locked in the winding function. The locking action can thereafter be switched to the N:\Sydmey\C cnt\62000-62999P62979.A9 Afended Spei w iled sfth Rispone 2008-1 1l-05 DOC 00
O
O abseiling function by means of a simple hand grip. In this way, the person to be rescued is automatically secured during the entire process of being decoupled z from the retaining rope. The abseiling function of the abseiling unit can thereafter be enabled by releasing the locking action.
In one particularly advantageous embodiment, the switchable locking action is provided by means of a ratchet. In another embodiment which likewise meets the required safety conditions, the locking action is provided by means of a Io spring-loaded bolt.
In another aspect, the invention provides an abseiling unit for an abseiling cable, comprising a housing rotatably accommodating a first shaft and a second shaft, wherein a first gearwheel and a centrifugal brake are arranged on said first shaft, wherein a second gearwheel and a pulley are arranged on said second shaft, said first gearwheel intermeshing with said second gearwheel, at least one of said first shaft and said second shaft protruding out of said housing for coupling to a torque transmitting element, wherein said pulley comprises a circumferential groove for slip-free receiving said abseiling cable, wherein the housing comprises at least one opening for the passage of said abseiling cable, wherein a locking unit is provided for positively locking one of said first shaft and said second shaft in one of a first rotational direction and a second rotational direction, while said pulley is freely rotatable in the other of said first rotational direction and said second rotational direction, such that a load can freely be lifted up using said abseiling cable while the abseiling cable is secured against a downward movement under said load.
N:\SydncyCnc\Palmc\62000-62999\P62979 AU\Specs\P62979 Amrtdcd Spci s filed with Respose 2008-I I-OS DOC 00 Brief Description of the Drawings 0 z The essence and the advantages of the device are clarified by means of the exemplary embodiment illustrated in the appended drawing, in which: Fig. 1 is a partially sectioned illustration of the abseiling unit, and SFig. 2 shows the abseiling unit in a side view onto the side which N faces away from the drive.
(NO
Detailed Description of the Preferred Embodiments In Fig. 1, the locking device, in the form of a ratchet, is fixed in a torque-secure manner to the common shaft 3 of the guide roller 2 and the large gearwheel 4 at the left-hand side of the abseiling unit 1. The step-up transmission having the large gearwheel 4 and the small gearwheel 5, which is in the form of a pinion in the illustrated exemplary embodiment, is situated in the right-hand part of the housing. The centrifugal brake 7 is flanged onto the drive shaft 6 at the right-hand side.
The hand crank 8, which is fixed in a torque-secure manner to the drive shaft 6 which extends out of the housing, is illustrated at the far right-hand side. The handle 9 can be seen in the deployed position in the lower part of the hand crank 8. The handle 9 can be folded into the housing of the hand crank 8, so that in the abseiling function, the handle does not protrude out of the contour of the hand wheel, as a result of which the risk of injury, or the danger of imbalance being caused, which is relevant at the high rotational speeds which are possible, is eliminated.
The ratchet shaft 11, which is fixed to the common shaft 3 of the guide roller 2 and the large gearwheel 4 in a torque-secure manner, can be clearly seen in Fig. 2. The crown gear 16, into which the spring-loaded blocking catches 12 and 14 can engage, is fixed to the ratchet shaft 11. Here, blocking catch 12 acts against a counterclockwise rotation, while the blocking catch 14 acts N:\Sydncy\Cases\Paicnr\62000-62999\P62979.AU\Spcs\P62979 Amnded Speci as filed sith Response 2008-11-05.DOC 6a 00
O
0 against a clockwise rotation. As a result of the spring loading, the blocking catches automatically pivot into the teeth of the crown gear 16 if they are not z deflected out of the engagement position by the switch 13.
In the claims which follow and in the preceding description of the invention, except where the context requires otherwise due to express language or necessary implication, the word "comprise" or variations such as "comprises" or S"comprising" is used in an inclusive sense, i.e. to specify the presence of the stated features but not to preclude the presence or addition of further features 0 10 in various embodiments of the invention.
It is to be understood that, if any prior art publication is referred to herein, such reference does not constitute an admission that the publication forms a part of the common general knowledge in the art, in Australia or any other country.
N \Sydney\Ce\Paten\62OO-62999\P62979AUISpecis\P62979 Amnded Speci as filed ithb Response 2008-11 .OS.DOC
Claims (20)
1. An abseiling unit for a traction cable, comprising a guide roller for non-slip guidance of said traction cable, the guide roller being rotatable in two rotational directions, In a step-up transmission comprising a small gearwheel and a large c gearwheel, and c a hand crank for manually performing a winding function, wherein the hand crank engages on a drive shaft of the small Sgearwheel, wherein the large gearwheel is mounted in a torque-secure manner on a common shaft with the guide roller, wherein a locking unit is provided for positively locking of said step-up transmission in a loaded rotational direction, and wherein the step-up transmission is freely rotatable in a direction opposed to the loaded rotational direction.
2. The abseiling unit as claimed in claim 1, wherein said locking unit is provided for positively locking one of said drive shaft and said common shaft.
3. The abseiling unit as claimed in claim 1 or 2, wherein said locking unit is locking said common shaft.
4. The abseiling unit as claimed In one of claims 1 to 3, wherein at least one of said drive shaft and said common shaft comprises a portion having a circumferential toothing, and wherein said locking unit can be engaged with said toothing.
The abseiling unit as claimed in one of claims 1 to 4, wherein the locking unit can be switched to act in either rotational direction.
6. The abseiling unit as claimed in one of claims 1 to 5, wherein the locking unit comprises a rotational direction switch for selectively engaging a blocking catch with one of said drive shaft and said common shaft.
7. The abseiling unit as claimed in one of claims 1 to 6, wherein the locking unit comprises a ratchet. N:\SydneACass\Pnt\62000-6299\P62979AUSpecis\P62979 Arneded Speci as filed with Response 2008-1 1-OS DOC
8 O 8. The abseiling unit as claimed in one of claims 1 to 6, wherein the locking unit comprises a spring-loaded bolt. ;Z
9. The abseiling unit as claimed in one of claims 1 to 8, wherein the 00step-up transmission is accommodated in a housing.
10. The abseiling unit as claimed in claim 9, wherein said housing Scomprises a first housing part and a second housing part. C
11. The abseiling unit as claimed in claim 10, wherein the common shaft is partially arranged in each of said first housing part and said second housing part.
12. The abseiling unit as claimed in claim 10 or 11, wherein the drive shaft is partially arranged in each of said first housing part and said second housing part.
13. The abseiling unit as claimed in one of claims 10 to 12, wherein the large gearwheel and the small gearwheel are arranged in the same of said first housing part and said second housing part.
14. The abseiling unit as claimed in one of claims 10 to 13, wherein said first housing part and said second housing part are assembled using at least one screw.
The abseiling unit as claimed in one of claims 1 to 14, further comprising a suspending support bracket.
16. The abseiling unit as claimed in one of claims 1 to 15, further comprising a centrifugal brake, the centrifugal brake being arranged on said drive shaft.
17. An abseiling unit with a winding function, comprising a guide roller, which is mounted so as to be rotatable in both directions, for non-slip guidance of a traction means, a step-up transmission which comprises a centrifugal brake and whose large gearwheel is mounted in a torque-secure manner on a common shaft with the guide roller, and wherein the common shaft of the guide roller and the large gearwheel can be positively locked, and a hand crank, which engages on the drive shaft of the small N\1 ielbournc\Cases\PalnI\62000-6299\P6279A\SpccisP62979 AU Spccificallon 2007-8-27 doc 27/08107 00 O gearwheel of the step-up transmission, for performing the winding function manually. O Z
18. The abseiling unit as claimed in claim 17, wherein the positive Slocking can be switched to act in either rotational direction.
19. An abseiling unit for an abseiling cable, comprising a housing I rotatably accommodating a first shaft and a second shaft, Swherein a first gearwheel and a centrifugal brake are arranged on said first shaft, D wherein a second gearwheel and a pulley are arranged on said second shaft, said first gearwheel intermeshing with said second gearwheel, at least one of said first shaft and said second shaft protruding out of said housing for coupling to a torque transmitting element, wherein said pulley comprises a circumferential groove for slip- free receiving said abseiling cable, wherein the housing comprises at least one opening for the passage of said abseiling cable, wherein a locking unit is provided for positively locking one of said first shaft and said second shaft in one of a first rotational direction and a second rotational direction, while said pulley is freely rotatable in the other of said first rotational direction and said second rotational direction, such that a load can freely be lifted up using said abseiling cable while the abseiling cable is secured against a downward movement under said load.
20. An abseiling unit substantially as herein described with reference to the accompanying drawings. N:\Sydnc)ACic\Pattn\620O-O62999\P62979 AUSpccisP62979 Amctdcd Spcci &s filed with Response 2008-1I-OSDOC
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005010767A DE102005010767B4 (en) | 2005-03-09 | 2005-03-09 | Descender with winch function |
DE102005010767.2 | 2005-03-09 | ||
PCT/DE2006/000396 WO2006094486A1 (en) | 2005-03-09 | 2006-03-06 | Abseiling device having a winch function |
Publications (2)
Publication Number | Publication Date |
---|---|
AU2006222451A1 AU2006222451A1 (en) | 2006-09-14 |
AU2006222451B2 true AU2006222451B2 (en) | 2008-12-18 |
Family
ID=36407907
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
AU2006222451A Ceased AU2006222451B2 (en) | 2005-03-09 | 2006-03-06 | Abseiling device having a winch function |
Country Status (9)
Country | Link |
---|---|
US (1) | US20080128221A1 (en) |
EP (2) | EP1758656B1 (en) |
CN (1) | CN1988935B (en) |
AT (1) | ATE413212T1 (en) |
AU (1) | AU2006222451B2 (en) |
DE (4) | DE102005010767B4 (en) |
DK (1) | DK1758656T3 (en) |
ES (1) | ES2317508T3 (en) |
WO (1) | WO2006094486A1 (en) |
Families Citing this family (23)
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US20080035423A1 (en) * | 2006-08-08 | 2008-02-14 | D B Industries, Inc. | Retractable horizontal lifeline assembly |
US20080041661A1 (en) * | 2006-08-08 | 2008-02-21 | D B Industries, Inc. | Retractable horizontal lifeline assembly |
DE202007013135U1 (en) * | 2007-09-18 | 2008-02-28 | Mittelmann Sicherheitstechnik Gmbh & Co.Kg | Abseiling device with fire-resistant traction means |
US8893854B2 (en) | 2007-09-28 | 2014-11-25 | D B Industries, Llc | Retractable lifeline assembly |
US8245817B2 (en) * | 2008-08-04 | 2012-08-21 | D B Industries, Inc. | Self-rescue safety device |
DE102008046456B4 (en) | 2008-09-09 | 2017-01-12 | Mittelmann Sicherheitstechnik Gmbh & Co.Kg | Retracting Lifeline-stocker |
US9764172B2 (en) | 2009-03-09 | 2017-09-19 | D B Industries, Llc | Safety device with fall arrest and descending modes |
US10688323B2 (en) | 2009-03-09 | 2020-06-23 | D B Industries, Llc | Safety device with fall arrest and descending modes |
US8567562B2 (en) * | 2009-11-02 | 2013-10-29 | B D Industries, LLC | Brake assembly for a self-retracting lifeline assembly |
DE202009015407U1 (en) | 2009-11-02 | 2010-02-18 | Skylotec Gmbh | Descender with winch function |
CN102358590A (en) * | 2011-10-25 | 2012-02-22 | 何少敦 | Suspended descending system |
CN102358591A (en) * | 2011-10-28 | 2012-02-22 | 何少敦 | Suspension descending system |
US9121462B2 (en) | 2011-10-28 | 2015-09-01 | D B Industries, Llc | Self-retracting lifeline |
EP2609963A1 (en) | 2011-12-29 | 2013-07-03 | Cresto AB | Descending device with direct drive centrifugal brake |
US9174073B2 (en) | 2013-02-08 | 2015-11-03 | D B Industries, Llc | Energy absorber assembly and components thereof |
DE202015001685U1 (en) * | 2015-03-05 | 2015-03-23 | Mittelmann Sicherheitstechnik Gmbh & Co. Kg | descender |
CN104740849B (en) * | 2015-03-25 | 2016-11-30 | 山东师范大学 | Steep cliff prompt drop bracing frame |
AU2016244823B2 (en) | 2015-04-07 | 2020-05-14 | Harken, Incorporated | High load descender with adaptive release linkage |
US10583315B2 (en) * | 2015-04-07 | 2020-03-10 | Harken, Incorporated | High load descender with adaptive release linkage |
US11660475B2 (en) | 2015-04-07 | 2023-05-30 | Harken, Incorporated | High load descender with adaptive release linkage |
GB2543567A (en) * | 2015-10-23 | 2017-04-26 | Checkmate Lifting & Safety Ltd | Descender |
DE202022101467U1 (en) * | 2022-03-21 | 2022-03-30 | Mittelmann Sicherheitstechnik Gmbh & Co. Kg | Descender with torque limiter |
DE102023123311B3 (en) | 2023-08-30 | 2024-07-18 | Mittelmann Sicherheitstechnik Gmbh & Co. Kg | Descender with double rope guide |
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DE10210969A1 (en) * | 2002-03-13 | 2003-10-09 | Mittelmann Armaturen | Abseil device with winding function for abseiling has second lever element able to move on first lever element |
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2005
- 2005-03-09 DE DE102005010767A patent/DE102005010767B4/en not_active Expired - Fee Related
-
2006
- 2006-03-06 AT AT06722562T patent/ATE413212T1/en not_active IP Right Cessation
- 2006-03-06 DE DE112006001931.7T patent/DE112006001931B4/en active Active
- 2006-03-06 DE DE202006020127U patent/DE202006020127U1/en not_active Expired - Lifetime
- 2006-03-06 AU AU2006222451A patent/AU2006222451B2/en not_active Ceased
- 2006-03-06 DK DK06722562T patent/DK1758656T3/en active
- 2006-03-06 DE DE502006001987T patent/DE502006001987D1/en active Active
- 2006-03-06 EP EP06722562A patent/EP1758656B1/en active Active
- 2006-03-06 CN CN2006800003554A patent/CN1988935B/en active Active
- 2006-03-06 ES ES06722562T patent/ES2317508T3/en active Active
- 2006-03-06 WO PCT/DE2006/000396 patent/WO2006094486A1/en active Application Filing
- 2006-03-06 EP EP08016085A patent/EP1994960A1/en not_active Withdrawn
- 2006-03-06 US US11/629,576 patent/US20080128221A1/en not_active Abandoned
Patent Citations (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE10210969A1 (en) * | 2002-03-13 | 2003-10-09 | Mittelmann Armaturen | Abseil device with winding function for abseiling has second lever element able to move on first lever element |
Also Published As
Publication number | Publication date |
---|---|
AU2006222451A1 (en) | 2006-09-14 |
DE202006020127U1 (en) | 2007-10-25 |
DE202006020127U9 (en) | 2009-04-02 |
DE112006001931B4 (en) | 2021-02-18 |
CN1988935A (en) | 2007-06-27 |
DE502006001987D1 (en) | 2008-12-18 |
DE102005010767B4 (en) | 2007-01-11 |
ATE413212T1 (en) | 2008-11-15 |
EP1994960A1 (en) | 2008-11-26 |
EP1758656B1 (en) | 2008-11-05 |
WO2006094486A1 (en) | 2006-09-14 |
DE102005010767A1 (en) | 2006-09-21 |
EP1758656A1 (en) | 2007-03-07 |
DK1758656T3 (en) | 2009-03-09 |
ES2317508T3 (en) | 2009-04-16 |
US20080128221A1 (en) | 2008-06-05 |
CN1988935B (en) | 2010-12-08 |
DE112006001931A5 (en) | 2008-04-17 |
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