CN103299034A - Anchoring device - Google Patents
Anchoring device Download PDFInfo
- Publication number
- CN103299034A CN103299034A CN2011800398973A CN201180039897A CN103299034A CN 103299034 A CN103299034 A CN 103299034A CN 2011800398973 A CN2011800398973 A CN 2011800398973A CN 201180039897 A CN201180039897 A CN 201180039897A CN 103299034 A CN103299034 A CN 103299034A
- Authority
- CN
- China
- Prior art keywords
- tubular body
- tube
- anchoring element
- anchor
- anchor device
- 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.)
- Pending
Links
- 238000004873 anchoring Methods 0.000 title claims abstract description 39
- 239000011435 rock Substances 0.000 claims abstract description 14
- 210000000038 chest Anatomy 0.000 claims description 12
- 238000000034 method Methods 0.000 claims description 7
- 230000000295 complement effect Effects 0.000 claims description 4
- 230000033001 locomotion Effects 0.000 claims description 4
- 229910000831 Steel Inorganic materials 0.000 claims description 3
- 239000010959 steel Substances 0.000 claims description 3
- 239000012530 fluid Substances 0.000 claims description 2
- 238000005065 mining Methods 0.000 abstract description 4
- 230000008901 benefit Effects 0.000 description 3
- 238000000926 separation method Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 241001074085 Scophthalmus aquosus Species 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 210000003205 muscle Anatomy 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/0033—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts having a jacket or outer tube
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/0026—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection characterised by constructional features of the bolts
- E21D21/004—Bolts held in the borehole by friction all along their length, without additional fixing means
-
- E—FIXED CONSTRUCTIONS
- E21—EARTH OR ROCK DRILLING; MINING
- E21D—SHAFTS; TUNNELS; GALLERIES; LARGE UNDERGROUND CHAMBERS
- E21D21/00—Anchoring-bolts for roof, floor in galleries or longwall working, or shaft-lining protection
- E21D21/008—Anchoring or tensioning means
Landscapes
- Engineering & Computer Science (AREA)
- Mining & Mineral Resources (AREA)
- Structural Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
- Geology (AREA)
- Piles And Underground Anchors (AREA)
Abstract
This invention relates to an anchoring device and more particularly but not exclusively, to a rock anchor for use in a mining environment, and which combines the functionality of a split set and an attachment anchor. The anchoring device includes a tubular body having a longitudinal slot provided therein, and an elongate anchoring element locatable inside the tubular body. The anchoring element is displaceable between a retracted position in which an end of the anchoring element is located inside the tubular body, and a protruding position, in which at least part of the elongate element protrudes from the tubular element.
Description
Technical field
The present invention relates to a kind of anchor device, and more particularly but be not only to relate to a kind of rock anchor for mining environment, this rock anchor is in conjunction with split anchor and the function of adhering to anchor.
Background technology
The industrial anchor device that is known as anchor bolt or rock anchor usually in mining and excavate use in for ubiquitous, and be used to the local rock mass stability of having carried out or having excavated or digging up mine.Especially, anchor bolt helps load is delivered to more stable interior zone from the unsettled surf zone of the rock mass that has query.Many dissimilar anchor bolts are used in the industry, and anchor bolt designs from simple designs to very somewhat complex design is varied.
One type friction-type anchor bolt is commonly called " split anchor " in industry.The split anchor is served as reasons and is had the anchor of the elongated high strength steel pipe composition of groove along its length.One end of pipe is the structure that is easy to insert the taper a little in the boring, and the other end can comprise for the welding annular flange that keeps bearing plate.In use, the pipe that will have groove by utilizing hammer drill to apply insertion force is driven in the slightly little hole, and hammer drill is typically identical with the brill that is used for boring.Along with pipe is advanced in the hole, the inner surface of the external surface conjugate foramen of pipe, thus cause groove and cause pipe to be extruded thus.Thus, pipe is applied to the opposite power of radially outward pointing on the wall in hole, thereby causes the firm engagement between the Guan Yukong.
Same common for being used for making net, pipeline or other facility anchor firm with respect to rock mass for above mentioned anchor device.In this case, the purpose of anchor device is to be provided for the attachment point of some outer goodses, but not strengthens rock mass, and these anchors are commonly called and adhere to anchor in this manual.
In practice, the hole of separation is pierced to be used in the rock mass admitting and strengthens anchor/muscle and adhere to anchor (for example, can be perhaps many other structures of anchor bolt eye, pigtail shape eyebolt).To recognize that this causes the repetition of work, because often need to bore the hole of the separation that comes in close proximity to each other.This is not desirable scheme, because it causes inefficiency, repeats cost and can constitute security risk.If attempt adhering in the thorax hole that anchor inserts mounted friction anchor, the thorax hole will be twisted or block usually to adhering to anchor inserts wherein degree.Space and physical constraint further aggravation install the difficulty of adhering to anchor additional in the friction anchor.
Correspondingly, the object of the present invention is to provide a kind of anchor device, this anchor device will alleviate above-mentioned shortcoming at least in part.
The present invention also aims to provide a kind of anchor device, this anchor device will be the useful alternative of existing anchor device.
Summary of the invention
According to the present invention, a kind of anchor device is provided, it is inner to be suitable for being installed to boring, and described anchor device comprises:
Tubular body, described tubular body has the cannelure in the sidewall that is provided at described tubular body, described main body can move between tension position and release position, the diameter of described pipe at described tension position less than in described release position, and described tubular body is by towards described release position bias voltage, in use to engage the sidewall in the hole that described tubular body wherein is installed; And
Elongated anchoring element, described elongated anchoring element can be positioned at described tubular body, described anchoring element can move between punctured position and extended position, at described punctured position, the end of described anchoring element is positioned at described tubular body, at described extended position, stretch out from described tube element the described end of described at least elongated member.
Described anchor device is provided as comprising mobile limiting mechanism structure, is used for the described elongated anchoring element of restriction with respect to the movement of described tubular body.
In one embodiment, described elongated anchoring element is provided as being fixed to described tubular body slidably.
Described mobile restriction structure is provided as comprising the tube-in-tube structure that is positioned at described tube element and the block that is fixed to described anchoring element, the described main body of described anchoring element that is constructed so that can move with respect to the thorax hole of described tube-in-tube structure, but described block has the diameter greater than the described thorax hole of described tube-in-tube structure, can not be moved beyond described tube-in-tube structure thus.
Described tube-in-tube structure can be the form of main body, and this main body has the thorax hole that is provided as passing this main body, and this main body is soldered to described tubular body.Alternatively, described tube-in-tube structure is provided as the form of eye or eyelet, and described eye or described eyelet are by being formed in the sidewall that depression is stamped into described tubular body.
In another embodiment of the present invention, described mobile restriction structure is provided as being provided at the form of the complementary pyramidal structure on described tubular body and the described anchoring element.
Described tubular body is preferably the form of split anchor known in the art.
Described elongated anchoring element can be steel eyebolt, wirerope or ends at the form of any other elongated member of suitable attaching structure.
According to a further aspect of the invention, a kind of tubular body is provided, this tubular body has the cannelure that is provided in the described tubular body, described tubular body can move between tension position and release position, the diameter of described pipe at described tension position less than in described release position, described tubular body is by towards described release position bias voltage, and described tubular body is characterised in that tube-in-tube structure is provided in the described tubular body.
Described tube-in-tube structure can be the form of main body, and this main body has the thorax hole that is provided as passing this main body, and this main body is soldered to described tubular body.Alternatively, described tube-in-tube structure is provided as the form of eye or eyelet, and described eye or described eyelet are by being formed in the sidewall that depression is stamped into described tubular body.
Preferably, described tubular body is the form of split anchor.
The feature again according to the present invention provides a kind of method that anchor device is installed in the hole that is drilled in the rock mass, said method comprising the steps of:
Aforesaid anchor device is provided;
Described anchor device is inserted in the described hole; And
Described anchoring element is moved to described extended position from described punctured position.
Described method can be included in described extended position with respect to the further step of the fixing described anchoring element of described tubular body.
The step that described anchoring element is fixed on described extended position can be infused in coagulable fluid in the chamber that forms between described tubular body and the described anchoring element.
Description of drawings
Also embodiment of the invention will be described with reference to drawings by non-limiting example, wherein:
Fig. 1 is that wherein anchoring element is positioned at punctured position according to the sectional side view of the anchor device of first embodiment of the invention;
Fig. 2 shows the anchor device of Fig. 1, and wherein anchoring element is positioned at extended position; And
Fig. 3 is that wherein anchoring element is positioned at punctured position according to the sectional side view of the anchor device of first embodiment of the invention.
The specific embodiment
Referring to accompanying drawing, wherein similar Reference numeral indicates similar feature, is indicated by Reference numeral 10 usually according to the non-limiting example of anchor device of the present invention.
Anchor device basically with novel and creationary mode in conjunction with two different existing apparatus, to realize unforeseeable benefit.For this reason, anchor device 10 comprises the friction-type anchor of split anchor 20 forms and can take many multi-form anchors 20 that adhere to.The purpose of friction-type anchor 30 is load is delivered to more stable interior zone from the unsettled surf zone of rock mass.The purpose of adhering to anchor 30 is to provide the attaching structure that is suitable for admitting needed pipeline, hawser, net or any other facility in the mining environment.
Friction-type anchor 20 or split anchor are for providing the form of the elongate tubular body of cannelure (not shown) within it.Tubular body ends at tapering point 21, and end opposite ends at flange arrangement 22.The use of split anchor and advantage are well-known, do not need further explanation.So to say that the outside bias voltage of the inherence of the wall of tubular body causes split to be anchored and is combined in the wall that the hole of this split anchor is wherein fixedly arranged, thereby causes being rigidly connected between tubular body and the rock mass, also causes effective transmission of load thus.
Adhere to anchor 30 and can adopt many different forms, a kind of form in the specific example is the form of hawser anchor, and the hawser anchor comprises elongate body 31, has first end 32 that ends at cyclic structure and in use is arranged in second end 33 in the hole that is provided at rock mass.
And, adhere to that anchor 30 is configured to and size on be adapted to fit in the split anchor 20.Yet, will recognize that for adhering to anchor 30, especially for adhering to first end 32 of anchor, only stretching out from the split anchor to be wise when its actual needs uses.This will simplify the installation of split anchor, and also will guarantee to adhere to anchor 30 and only be used after correctly fixing with respect to the split anchor.For this reason, adhering to anchor 30 can move between punctured position (Fig. 1) and extended position (Fig. 2), at punctured position, first end 32 of anchoring element 30 is positioned at the tubular body of split anchor 20, at extended position, at least part of elongated member stretches out from the tubular body of split anchor 20.
Yet, for make adhere to anchor only be moved to its will be with respect to split anchoring fixed (for example, by grouting) time residing position, the mobile degree of restriction is important.For this purpose, mobile limiting mechanism 40 is provided to limit the movement of adhering between anchor 30 and the split anchor 20.
In embodiment illustrated in figures 1 and 2, mobile limiting mechanism 40 is the sleeve 41 that is fixed to the split anchor and the form that is fixed to the block 42 that adheres to anchor 30.Sleeve 41 and the slender bodies 31 that adheres to anchor 30 be configured to and size on be suitable for allowing slender bodies to move through the thorax hole of sleeve.Yet block 42 has the big span of diameter than the thorax hole of sleeve 41, prevents from adhering to anchor at block 42 during in abutting connection with sleeve 41 thus and is moved further.At this moment, the circle that adheres to anchor stretches out the flange 22 above the split anchor, now can be by being injected into the tubular body of split anchor such as the suitable solidifiable medium of grouting and adhering in the endless belt that forms between the slender bodies of anchor and adhere to anchor surely with respect to the split anchoring.In another embodiment (not shown), sleeve is by being formed in the sidewall that recess/depression is stamped into tubular body, so that the part of sidewall radially extends in the tubular body.By this way, eye or eyelet are formed, and the edge of eye or eyelet still is fixed to sidewall, thereby cause sleeve and the whole formation of tubular body, and do cancellation like this to the needs of welding.
Shown alternate embodiment among Fig. 3, and in this embodiment, mobile limiting mechanism 40 is the form of two complementary wedge structures (41 and 42), two complementary wedge structures also will prevent further motion when reaching predetermined relative positions.This structure will have increase is applied to the power on the wall of opening by the split anchor additional benefit, because wedge structure will be applied to the reaction force of outside sensing on the wall of tubular body of split anchor when adhering to anchor and move down.
To recognize that above-mentioned only is two embodiment of the present invention, and can have many variations under the situation that does not deviate from spirit of the present invention and/or scope.
Claims (14)
1. an anchor device is suitable for being installed in the boring, and described anchor device comprises:
Tubular body, described tubular body has the cannelure in the sidewall that is provided at described tubular body, described main body can move between tension position and release position, the diameter of described pipe at described tension position less than in described release position, and described tubular body is by towards described release position bias voltage, in use to engage the sidewall in the hole that described tubular body wherein is installed; And
Elongated anchoring element, described elongated anchoring element can be positioned at described tubular body, described anchoring element can move between punctured position and extended position, at described punctured position, the end of described anchoring element is positioned at described tubular body, at described extended position, stretch out from described tube element the described end of described at least elongated member.
2. anchor device as claimed in claim 1 comprises mobile restriction structure, is used for the described elongated anchoring element of restriction with respect to the movement of described tubular body.
3. anchor device as claimed in claim 2, wherein said mobile restriction structure comprises the tube-in-tube structure that is positioned at described tube element and the block that is fixed to described anchoring element, the described main body of described anchoring element that is constructed so that can move with respect to the thorax hole of described tube-in-tube structure, but described block has the diameter greater than the described thorax hole of described tube-in-tube structure, can not be moved beyond described tube-in-tube structure thus.
4. anchor device as claimed in claim 3, wherein said tube-in-tube structure is the form of main body, and this main body has the thorax hole that is provided as passing this main body, and this main body is soldered to described tubular body.
5. anchor device as claimed in claim 3, wherein said tube-in-tube structure is the form of eye or eyelet, described eye or described eyelet are by being formed in the sidewall that depression is stamped into described tubular body.
6. anchor device as claimed in claim 2, wherein said mobile restriction is configured to be provided at the form of the complementary pyramidal structure on described tubular body and the described anchoring element.
7. each described anchor device in the claim as described above, wherein said tubular body is the main body of split anchor.
8. each described anchor device in the claim as described above, wherein said elongated anchoring element is steel eyebolt, wirerope or the form that ends at any other elongated member of suitable attaching structure.
9. tubular body, form the part of anchor device, described tubular body has the cannelure that is provided in the described tubular body and can move between tension position and release position, the diameter of described pipe at described tension position less than in described release position, described tubular body is biased towards described release position, and described tubular body is characterised in that tube-in-tube structure is provided in the described tubular body.
10. tubular body as claimed in claim 9, wherein said tube-in-tube structure is the form of main body, and this main body has the thorax hole that is provided as passing this main body, and this main body is soldered to described tubular body.
11. tubular body as claimed in claim 9, wherein said tube-in-tube structure are the form of eye or eyelet, described eye or described eyelet are by being formed in the sidewall that depression is stamped into described tubular body.
12. a method that anchor device is installed in the hole that is drilled in the rock mass, this method may further comprise the steps:
Each described anchor device in the claim 1 to 8 is provided;
Described anchor device is inserted in the described hole; And
Described anchoring element is moved to described extended position from described punctured position.
13. method as claimed in claim 12 is included in described extended position with respect to the step of the fixing described anchoring element of described tubular body.
14. method as claimed in claim 13 is wherein by coagulable fluid being infused in the chamber that forms between described tubular body and the described anchoring element and described anchoring element is fixed on described extended position.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| ZA201005824 | 2010-08-16 | ||
| ZA2010/05824 | 2010-08-16 | ||
| PCT/IB2011/053617 WO2012023101A1 (en) | 2010-08-16 | 2011-08-16 | Anchoring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103299034A true CN103299034A (en) | 2013-09-11 |
Family
ID=45604821
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011800398973A Pending CN103299034A (en) | 2010-08-16 | 2011-08-16 | Anchoring device |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20130294844A1 (en) |
| CN (1) | CN103299034A (en) |
| AU (1) | AU2011292797A1 (en) |
| CL (1) | CL2013000472A1 (en) |
| WO (1) | WO2012023101A1 (en) |
| ZA (1) | ZA201105990B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106460511A (en) * | 2014-06-13 | 2017-02-22 | 山特维克知识产权股份有限公司 | Friction bolt |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| PT3384131T (en) * | 2015-11-30 | 2021-02-22 | Sandvik Intellectual Property | Friction bolt |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3451304A (en) * | 1967-10-12 | 1969-06-24 | Raymond H Taylor | Slotted wedge-type eyebolt |
| US4312604A (en) * | 1980-07-17 | 1982-01-26 | Ingersoll-Rand Co. | Friction rock stabilizer set, and a method of fixing a friction rock stabilizer in an earth structure bore |
| US4407610A (en) * | 1980-03-28 | 1983-10-04 | Elders G W | Stabilizer for an earth structure |
| WO2000052304A1 (en) * | 1999-03-01 | 2000-09-08 | Witzand Hendrik Hermanus Gerha | Friction bolt with flexible core |
| EP1715138B1 (en) * | 2005-04-16 | 2008-05-21 | fischerwerke GmbH & Co. KG | Tie rod |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE427764B (en) * | 1979-03-09 | 1983-05-02 | Atlas Copco Ab | MOUNTAIN CULTURAL PROCEDURES REALLY RUCH MOUNTED MOUNTAIN |
| US4260294A (en) * | 1979-11-19 | 1981-04-07 | Ingersoll-Rand Company | Friction rock stabilizer and method for inserting thereof in an earth structure bore |
| WO1990004085A1 (en) * | 1988-10-10 | 1990-04-19 | Witzand Hendrik Hermanus Gerha | Rock stabilizer |
| US5649790A (en) * | 1995-06-22 | 1997-07-22 | Mergen; Douglas Matthew | Friction rock stabilizer and method for insertion |
| US5827014A (en) * | 1997-02-04 | 1998-10-27 | Hugotek (Proprietary) Limited | Friction rock stabilizer |
| AUPR994002A0 (en) * | 2002-01-11 | 2002-01-31 | Fergusson, Jeffrey Robert | A rock bolt |
| SE525140C2 (en) * | 2003-05-12 | 2004-12-07 | Atlas Copco Rock Drills Ab | Expandable rock bolt and rock bolt system |
-
2011
- 2011-08-16 CN CN2011800398973A patent/CN103299034A/en active Pending
- 2011-08-16 US US13/817,321 patent/US20130294844A1/en not_active Abandoned
- 2011-08-16 AU AU2011292797A patent/AU2011292797A1/en not_active Abandoned
- 2011-08-16 ZA ZA2011/05990A patent/ZA201105990B/en unknown
- 2011-08-16 WO PCT/IB2011/053617 patent/WO2012023101A1/en active Application Filing
-
2013
- 2013-02-15 CL CL2013000472A patent/CL2013000472A1/en unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3451304A (en) * | 1967-10-12 | 1969-06-24 | Raymond H Taylor | Slotted wedge-type eyebolt |
| US4407610A (en) * | 1980-03-28 | 1983-10-04 | Elders G W | Stabilizer for an earth structure |
| US4312604A (en) * | 1980-07-17 | 1982-01-26 | Ingersoll-Rand Co. | Friction rock stabilizer set, and a method of fixing a friction rock stabilizer in an earth structure bore |
| WO2000052304A1 (en) * | 1999-03-01 | 2000-09-08 | Witzand Hendrik Hermanus Gerha | Friction bolt with flexible core |
| EP1715138B1 (en) * | 2005-04-16 | 2008-05-21 | fischerwerke GmbH & Co. KG | Tie rod |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106460511A (en) * | 2014-06-13 | 2017-02-22 | 山特维克知识产权股份有限公司 | Friction bolt |
Also Published As
| Publication number | Publication date |
|---|---|
| US20130294844A1 (en) | 2013-11-07 |
| CL2013000472A1 (en) | 2013-12-13 |
| WO2012023101A1 (en) | 2012-02-23 |
| ZA201105990B (en) | 2012-05-25 |
| AU2011292797A1 (en) | 2013-03-21 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP3294991B1 (en) | Locally anchored self-drilling hollow rock bolt | |
| AU2016283424B2 (en) | Grout delivery system | |
| AU2020201501B2 (en) | Retainer Device for a Rock Anchor, Rock Anchor System and Associated Installation Method | |
| CN111456782B (en) | Grouting bonding prestress yielding anchor rod and construction method thereof | |
| US7874380B2 (en) | Method and device for drilling, particularly percussion or rotary percussion drilling, a hole in soil or rock material | |
| US11732583B2 (en) | Retainer device for a rock anchor, rock anchor system and associated installation method | |
| WO2004074636A3 (en) | Radially deformed anchorage bolt | |
| CN103299034A (en) | Anchoring device | |
| AU2012261576B2 (en) | Rock bolt and rock bolt component | |
| US11073018B1 (en) | Self-drilling hybrid rock anchor | |
| CA2911526A1 (en) | Apparatus and methods for stabilising rock | |
| KR100912482B1 (en) | A double type wing anchor | |
| CN105133607A (en) | Expander type anchor cable device | |
| KR100463267B1 (en) | Cable removal anchor using center wire | |
| AU2016100302B4 (en) | Apparatus and methods for stabilising rock | |
| EP3530878B1 (en) | Impact absorber for rock bolt | |
| KR20170028196A (en) | Pile composite and construction method thereof | |
| WO2010006374A1 (en) | Stabilising rock masses |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20130911 |