CN112062003A - Municipal administration public facilities is maintained and is covered device with inspection shaft lid - Google Patents
Municipal administration public facilities is maintained and is covered device with inspection shaft lid Download PDFInfo
- Publication number
- CN112062003A CN112062003A CN202010969605.7A CN202010969605A CN112062003A CN 112062003 A CN112062003 A CN 112062003A CN 202010969605 A CN202010969605 A CN 202010969605A CN 112062003 A CN112062003 A CN 112062003A
- Authority
- CN
- China
- Prior art keywords
- support
- supporting box
- opening device
- cover opening
- box body
- 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- Withdrawn
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/18—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes
- B66C23/36—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes specially adapted for use in particular purposes mounted on road or rail vehicles; Manually-movable jib-cranes for use in workshops; Floating cranes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C1/00—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles
- B66C1/10—Load-engaging elements or devices attached to lifting or lowering gear of cranes or adapted for connection therewith for transmitting lifting forces to articles or groups of articles by mechanical means
- B66C1/12—Slings comprising chains, wires, ropes, or bands; Nets
- B66C1/14—Slings with hooks
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/16—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements
- B66C23/163—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes with jibs supported by columns, e.g. towers having their lower end mounted for slewing movements where only part of the column rotates, i.e. at least the bottom part is fixed
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66C—CRANES; LOAD-ENGAGING ELEMENTS OR DEVICES FOR CRANES, CAPSTANS, WINCHES, OR TACKLES
- B66C23/00—Cranes comprising essentially a beam, boom, or triangular structure acting as a cantilever and mounted for translatory of swinging movements in vertical or horizontal planes or a combination of such movements, e.g. jib-cranes, derricks, tower cranes
- B66C23/62—Constructional features or details
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/02—Driving gear
- B66D1/12—Driving gear incorporating electric motors
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66D—CAPSTANS; WINCHES; TACKLES, e.g. PULLEY BLOCKS; HOISTS
- B66D1/00—Rope, cable, or chain winding mechanisms; Capstans
- B66D1/28—Other constructional details
Abstract
The invention discloses a manhole cover opening device for municipal public facility maintenance in the field of municipal public facility maintenance, which comprises a vehicle base and a supporting box body, one side above the vehicle base is connected with the supporting box body through a screw, one side above the supporting box body is provided with a rotary support, the rotating support is welded with the supporting box body, a rotating disc is arranged in the rotating support, the middle part above the rotating disc is welded with a vertical rod support, end face bearings are arranged at the upper end and the lower end of the rotating disc, when the well lid is hoisted, the upright support can be ensured to flexibly rotate in the rotary support, the well lid is convenient to hoist and move away, time and labor are saved, and the flexible steel wire rope is arranged between the hand-held handle and the hanging ring, can conveniently adjust the angle of couple wantonly, can be convenient for it smoothly enter into the hanging hole of well lid top inside, improve operating efficiency.
Description
Technical Field
The invention relates to the field of municipal public facility maintenance, in particular to an inspection well cover opening device for municipal public facility maintenance.
Background
In recent years, with the unprecedented development of urban construction, lines such as telecommunication lines, electric power lines, water supply and drainage pipelines and the like are continuously laid, inspection wells are increasingly used, inspection well covers are firm and anti-theft, the manufactured inspection well covers are heavy in weight and tight in installation, impurities are always filled in gaps between the inspection wells and the inspection well covers in use, when the inspection well covers need to be opened in pipeline maintenance or sudden events, the inspection well covers cannot be immediately opened, working plans cannot be carried out on time, working efficiency is seriously affected, and therefore inspection well cover opening devices are needed.
But current inspection shaft lid device of uncapping is in the use, the well lid when opening the back and move aside, the rotation moment of torsion is great, the operation is consuming time hard, and simultaneously, the hoist and mount subassembly mostly adopts the reinforcing bar hook of stereoplasm to constitute, the flexibility is relatively poor, it is inconvenient to insert toward the hanging hole on the well lid, it is consuming time longer, fortune dimension instrument does not set up special storage space moreover, the messy indiscriminate of drawing is put everywhere, it is extremely inconvenient to use, therefore, the technical staff in the art provides a municipal administration public facilities maintains and uses inspection shaft lid device of uncapping, in order to solve the problem that proposes among the above.
Disclosure of Invention
The invention aims to provide a cover opening device for an inspection well cover for municipal public facility maintenance, which aims to solve the problems in the background technology.
In order to achieve the purpose, the invention provides the following technical scheme:
an inspection well cover opening device for municipal public facility maintenance comprises a vehicle base and a supporting box body, wherein one side above the vehicle base is connected with the supporting box body through a screw, a rotating support is arranged on one side above the supporting box body and welded with the supporting box body, a rotating disc is arranged in the rotating support, a vertical rod support is welded in the middle of the upper portion of the rotating disc, end face bearings are arranged below the rotating disc, at the bottom in the rotating support and above the rotating disc and positioned at the periphery of the vertical rod support, end covers are arranged above the end face bearings, and the end face bearings are connected with the rotating support, the rotating disc and the end covers in a clamping and pressing mode; through both ends set up about the rolling disc end face bearing can ensure when hoisting the well lid the pole setting support can the inside nimble rotation of swivel support is convenient for hoist the well lid and move aside, labour saving and time saving.
As a still further scheme of the invention: a storage battery pack is arranged on one side inside the supporting box body, the storage battery pack is connected with the supporting box body through screws, and a storage cabinet is arranged on the other side of the supporting box body; the storage battery pack provides power for the cover opening process of the storage cabinet, and some using tools related to operation and maintenance of municipal public facilities can be stored in the storage cabinet, so that the storage cabinet can be conveniently taken and stored at any time, and inconvenience in use caused by the fact that the tools are placed everywhere randomly is avoided.
As a still further scheme of the invention: the four corners below the vehicle base are connected with supporting rollers through bolts, and each supporting roller is composed of a group of directional wheels and a group of universal wheels; the device can be moved conveniently, and moving operation is facilitated.
As a still further scheme of the invention: a counterweight box body is connected to one side, located on the supporting box body, of the upper portion of the vehicle base through bolts, iron sand is filled in the counterweight box body, and a push handle is welded to one side, located on the upper portion of the counterweight box body; the iron sand in the counterweight box body plays a counterweight role, and the pushing handle can push the cover opening device to move.
As a still further scheme of the invention: a cross rod support is welded above the vertical rod support, an inclined support rod is welded on one side wall of the vertical rod support and below the cross rod support, and a mounting seat is welded at one end below the cross rod support; the inclined supporting rod, the cross rod support and the vertical rod support form a triangular supporting structure, and the purpose of stable support can be achieved.
As a still further scheme of the invention: an electric hoist is connected to the lower portion of the mounting seat through a bolt, a hanging wheel is connected to the lower portion of the electric hoist in a winding mode, a lifting hook is rotatably connected to the lower portion of the hanging wheel, and the lifting hook is a self-locking lifting hook; the electric hoist provides power for the handling well lid, the lifting hook can be convenient right hoisting component's installation and taking off.
As a still further scheme of the invention: a hoisting assembly is hung below the lifting hook, and an operation controller is electrically connected below the electric hoist through a lead; the hoisting assembly is used for hoisting and uncovering the well lid, and the operation controller is used for controlling the working process of the electric hoist.
As a still further scheme of the invention: the hoisting assembly comprises a hanging ring, a steel wire rope arranged below the hanging ring, a handheld handle arranged below the steel wire rope and a hook arranged below the handheld handle; the hanging ring is matched with the lifting hook, so that the quick connection and installation of the hoisting assembly and the lifting hook can be realized.
As a still further scheme of the invention: the hanging ring is in compression joint with the steel wire rope through a screw, a handheld handle is in compression joint with the lower portion of the steel wire rope through a screw, and a hook is welded to the lower portion of the handheld handle; through handheld handle with set up the flexibility between the link wire rope, can be convenient right the angle of couple is adjusted wantonly, and inside it entered into the hanging hole of well lid top smoothly can be convenient for, improvement operating efficiency.
As a still further scheme of the invention: the peripheries of the hand-held handle and the push handle are both coated with anti-skid rubber sleeves, and the hook is modulated; can play skid-proof effect, ensure simultaneously the couple all has stronger toughness and intensity, and then the extension the life of couple.
Compared with the prior art, the invention has the beneficial effects that:
1. according to the invention, the end face bearings are arranged at the upper end and the lower end of the rotating disc, so that the vertical rod support can be ensured to flexibly rotate in the rotating support when the well lid is hoisted, the well lid is conveniently hoisted and moved away, and time and labor are saved.
2. According to the invention, the flexible steel wire rope is arranged between the handheld handle and the hanging ring, so that the angle of the hook can be conveniently and randomly adjusted, the hook can conveniently and smoothly enter the hanging hole above the well lid, and the operation efficiency is improved.
3. According to the invention, through arranging the storage cabinet, some tools related to operation and maintenance of municipal public facilities can be stored, and the tools can be conveniently taken and stored at any time, so that inconvenience in use caused by messy placement of the tools everywhere is avoided.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is a structural diagram of the hoisting assembly of the present invention;
FIG. 3 is a front cross-sectional view of the counterweight housing of the present invention;
FIG. 4 is a front cross-sectional view of a support box of the present invention;
fig. 5 is a front sectional view of a rotary support portion of the present invention.
In the figure: 1. a vehicle base; 2. supporting the rollers; 3. supporting the box body; 4. a storage cabinet; 5. a battery pack; 6. a counterweight box body; 7. a push handle; 8. rotating the support; 9. an end cap; 10. rotating the disc; 11. an end face bearing; 12. the upright stanchion supports; 13. a cross bar support; 14. a diagonal brace; 15. a mounting seat; 16. an electric hoist; 17. a hoisting wheel; 18. a hook; 19. hoisting the assembly; 1901. hanging a ring; 1902. a wire rope; 1903. a handle; 1904. hooking; 20. operating the controller; 21. and (4) iron sand.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by a person of ordinary skill in the art without creative efforts based on the embodiments of the present invention belong to the protection scope of the present invention.
Referring to fig. 1 to 5, in the embodiment of the invention, an inspection well cover opening device for municipal public facility maintenance comprises a vehicle base 1 and a supporting box body 3, the supporting box body 3 is connected to one side above the vehicle base 1 through screws, a rotating support 8 is arranged on one side above the supporting box body 3, the rotating support 8 is welded to the supporting box body 3, a rotating disc 10 is arranged inside the rotating support 8, an upright support 12 is welded to the middle above the rotating disc 10, end face bearings 11 are arranged on the bottom inside the rotating support 8 and on the periphery of the upright support 12 above the rotating disc 10, an end cover 9 is arranged above the upper end face bearing 11, the end face bearings 11 are connected with the rotating support 8, the rotating disc 10 and the end cover 9 in a clamping and pressing manner, the end face bearings 11 are arranged at the upper end and the lower end of the rotating disc 10, so that the upright support 12 can be ensured to flexibly rotate inside the rotating support 8 when the, the well lid is convenient to hoist and move away, and time and labor are saved.
Wherein, one side inside the supporting box body 3 is provided with a storage battery pack 5, the storage battery pack 5 is connected with the supporting box body 3 through screws, and the other side of the supporting box body 3 is provided with a storage cabinet 4; the storage battery pack 5 provides power for the cover opening process of the device, a plurality of using tools related to operation and maintenance of municipal public facilities can be stored in the storage cabinet 4, the tools can be conveniently taken and stored at any time, inconvenience in use caused by random placement of the tools is avoided, the four corners below the vehicle base 1 are connected with the supporting rollers 2 through bolts, and the supporting rollers 2 consist of a group of directional wheels and a group of universal wheels; the device can be moved conveniently, moving operation is facilitated, a counterweight box body 6 is connected to one side, located on the supporting box body 3, of the upper portion of the vehicle base 1 through bolts, iron sand 21 is filled in the counterweight box body 6, and a push handle 7 is welded to one side, located on the upper portion of the counterweight box body 6; the iron sand 21 in the counterweight box 6 plays a role of counterweight, and the cover opening device can be pushed to move by the push handle 7.
A cross bar support 13 is welded above the vertical bar support 12, an inclined stay bar 14 is welded on one side wall of the vertical bar support 12 and below the cross bar support 13, and a mounting seat 15 is welded at one end below the cross bar support 13; the inclined strut 14, the cross bar support 13 and the vertical rod support 12 form a triangular support structure which can play a role in stabilizing and supporting, an electric hoist 16 is connected below the mounting seat 15 through bolts, a hanging wheel 17 is connected below the electric hoist 16 in a winding manner, a lifting hook 18 is rotatably connected below the hanging wheel 17, and the lifting hook 18 is a self-locking lifting hook 18; the electric hoist 16 provides power for lifting the well lid, the lifting hook 18 can be used for conveniently installing and taking down the lifting assembly 19, the lifting assembly 19 is suspended below the lifting hook 18, and the lower part of the electric hoist 16 is electrically connected with the operation controller 20 through a lead; the hoisting assembly 19 is used for hoisting and uncovering the well lid, and the operation controller 20 is used for controlling the working process of the electric hoist 16.
The hoisting assembly 19 comprises a hanging ring 1901, a steel wire rope 1902 arranged below the hanging ring 1901, a hand-held handle 1903 arranged below the steel wire rope 1902 and a hook 1904 arranged below the hand-held handle 1903; the hanging ring 1901 is matched with the lifting hook 18, so that the hoisting assembly 19 and the lifting hook 18 can be quickly connected and mounted, the hanging ring 1901 is in compression joint with the steel wire rope 1902 through a screw, a hand-held handle 1903 is in compression joint with the lower portion of the steel wire rope 1902 through a screw, and a hook 1904 is welded on the lower portion of the hand-held handle 1903; the flexible steel wire rope 1902 is arranged between the handheld handle 1903 and the hanging ring 1901, so that the angle of the hook 1904 can be conveniently adjusted at will, the hook can conveniently and smoothly enter a hanging hole above a well cover, the operation efficiency is improved, the peripheries of the handheld handle 1903 and the push handle 7 are coated with anti-skid rubber sleeves, and the hook 1904 is subjected to modulation processing; can play the skid-proof effect, ensure simultaneously that couple 1904 all has stronger toughness and intensity, and then prolong couple 1904's life.
The working principle of the invention is as follows: when the cover opening device for the well cover is used, the cover opening device can be pushed to move by the push handle 7 and can be moved to the well cover needing to be opened, then the electric hoist 16 is controlled to work by the operation controller 20, the hanging wheels 17 move downwards, further the hoisting assembly 19 is ensured to move downwards, then the handheld handle 1903 is held by hands, the hook 1904 is inserted into the hanging hole above the well cover, the hoisting assembly 19 with the proper number can be selected according to the number of the hanging holes for hoisting, then the electric hoist 16 is controlled by the operation controller 20 to act, the well cover is lifted to be opened, the angle of the hook 1904 can be conveniently and randomly adjusted by arranging the flexible steel wire rope 1902 between the handheld handle 1903 and the hanging ring 1901, the hook can conveniently and smoothly enter the hanging hole above the well cover, the operation efficiency is improved, then the hook 18 is pulled to rotate along the rotary support 8, the end face bearings 11 are arranged at the upper end face ends and the lower end face ends of, can be when hoisting the well lid, ensure that pole setting support 12 can rotate in 8 inside flexiblels of rotatory support, be convenient for hoist the well lid and remove, labour saving and time saving, the realization is to the operation of uncapping of well lid, couple 1904 through the modulation processing has stronger toughness and intensity, and then the life of extension couple 1904, locker 4 is inside can hold some use tools relevant with municipal utility fortune dimension, can conveniently get at any time and take to deposit, avoid the instrument to put everywhere in disorder and cause the use inconvenient.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention should be equivalent or changed within the scope of the present invention.
Claims (10)
1. The utility model provides a municipal administration public facilities maintain with inspection shaft lid device of uncapping, includes car base (1) and supporting box (3), its characterized in that: car base (1) top one side has through the screw connection supporting box (3), supporting box (3) top one side is provided with rotatory support (8), rotatory support (8) with supporting box (3) welding, rotatory support (8) inside is provided with rolling disc (10), the welding of rolling disc (10) top middle part has the pole setting to support (12), rolling disc (10) below with rotatory support (8) bottom and rolling disc (10) top is located the pole setting supports (12) periphery and all is provided with end face bearing (11), the top end face bearing (11) top is provided with end cover (9), end face bearing (11) with rotatory support (8), rolling disc (10) and end cover (9) all are connected through the card pressure mode.
2. The inspection well cover opening device for municipal utility maintenance according to claim 1, wherein: the storage battery pack is characterized in that a storage battery pack (5) is arranged on one side inside the supporting box body (3), the storage battery pack (5) is connected with the supporting box body (3) through screws, and a storage cabinet (4) is arranged on the other side of the supporting box body (3).
3. The inspection well cover opening device for municipal utility maintenance according to claim 1, wherein: the four corners below the vehicle base (1) are connected with supporting rollers (2) through bolts, and the supporting rollers (2) are provided with a group of directional wheels and a group of universal wheels.
4. The inspection well cover opening device for municipal utility maintenance according to claim 1, wherein: the car base (1) top is located there is counter weight box (6) one side of supporting box (3) through bolted connection, the inside packing of counter weight box (6) has iron sand (21), the welding of one side of counter weight box (6) top has and pushes away handle (7).
5. The inspection well cover opening device for municipal utility maintenance according to claim 4, wherein: a cross rod support (13) is welded above the vertical rod support (12), an inclined support rod (14) is welded on one side wall of the vertical rod support (12) and below the cross rod support (13), and a mounting seat (15) is welded at one end below the cross rod support (13).
6. The inspection well cover opening device for municipal utility maintenance according to claim 5, wherein: the electric hoist is characterized in that an electric hoist (16) is connected to the lower portion of the mounting base (15) through a bolt, a hanging wheel (17) is connected to the lower portion of the electric hoist (16) in a winding mode, a lifting hook (18) is rotatably connected to the lower portion of the hanging wheel (17), and the lifting hook (18) is a self-locking lifting hook (18).
7. The inspection well cover opening device for municipal utility maintenance according to claim 6, wherein: a hoisting assembly (19) is hung below the lifting hook (18), and an operation controller (20) is electrically connected below the electric hoist (16) through a wire.
8. The inspection well cover opening device for municipal utility maintenance according to claim 7, wherein: the hoisting assembly (19) comprises a hanging ring (1901), a steel wire rope (1902) arranged below the hanging ring (1901), a handheld handle (1903) arranged below the steel wire rope (1902) and a hook (1904) arranged below the handheld handle (1903).
9. The inspection well cover opening device for municipal utility maintenance according to claim 8, wherein: the suspension loop (1901) with wire rope (1902) pass through the screw crimping, wire rope (1902) below has handheld handle (1903) through the screw crimping, the welding of handheld handle (1903) below has couple (1904).
10. The inspection well cover opening device for municipal utility maintenance according to claim 9, wherein: the peripheries of the hand-held handle (1903) and the push handle (7) are coated with anti-slip rubber sleeves, and the hook (1904) is modulated.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010969605.7A CN112062003A (en) | 2020-09-15 | 2020-09-15 | Municipal administration public facilities is maintained and is covered device with inspection shaft lid |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010969605.7A CN112062003A (en) | 2020-09-15 | 2020-09-15 | Municipal administration public facilities is maintained and is covered device with inspection shaft lid |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112062003A true CN112062003A (en) | 2020-12-11 |
Family
ID=73695246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010969605.7A Withdrawn CN112062003A (en) | 2020-09-15 | 2020-09-15 | Municipal administration public facilities is maintained and is covered device with inspection shaft lid |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112062003A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113072017A (en) * | 2021-03-22 | 2021-07-06 | 华北水利水电大学 | Auxiliary device for underground pipeline detection and using method thereof |
| CN113247842A (en) * | 2021-06-03 | 2021-08-13 | 黄河水利职业技术学院 | A equipment for administrative area demarcation line survey and drawing |
-
2020
- 2020-09-15 CN CN202010969605.7A patent/CN112062003A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113072017A (en) * | 2021-03-22 | 2021-07-06 | 华北水利水电大学 | Auxiliary device for underground pipeline detection and using method thereof |
| CN113247842A (en) * | 2021-06-03 | 2021-08-13 | 黄河水利职业技术学院 | A equipment for administrative area demarcation line survey and drawing |
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|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20201211 |
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| WW01 | Invention patent application withdrawn after publication |