CN109869174A - Track self-shifting formula gib operates trolley - Google Patents
Track self-shifting formula gib operates trolley Download PDFInfo
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- CN109869174A CN109869174A CN201910186140.5A CN201910186140A CN109869174A CN 109869174 A CN109869174 A CN 109869174A CN 201910186140 A CN201910186140 A CN 201910186140A CN 109869174 A CN109869174 A CN 109869174A
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- frame assembly
- clamping plate
- column
- continued access
- trolley
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Abstract
The invention discloses a kind of track self-shifting formula gibs to operate trolley, including supporting mechanism, steerable system, frame assembly and walking mechanism, frame assembly is taper frame structure, M shape supporting beam is equipped with inside framework, the front-end and back-end of frame assembly are respectively equipped with the stabilizer blade for propping up trolley, the top of frame assembly is set there are four supporting mechanism and steerable system, four supporting mechanisms are that the top of frame assembly is arranged in square shape, supporting mechanism includes sleeve, continued access column and clamping plate, sleeve is set in the outside of telescopic continued access column, the bottom of continued access column is installed on frame assembly, the top of continued access column is equipped with the clamping plate for stepping up sleeper, clamping plate is in U-shape, the bottom of clamping plate is equipped with ratchet, realize a side plate of clamping plate to another piece of side plate one-way movement by rotating ratchet.The beneficial effects of the present invention are: compact-sized, all-hydraulic control, flexible to operation, crawler travel, mobility is good, time saving, laborsaving.
Description
Technical field
The present invention relates to coal mining equipment technical fields, more specifically, are related to a kind of track self-shifting formula gib
Operate trolley.
Background technique
Frequently encounter roof fall in the tunneling process of coal mining underground and top plate collapse situation, especially second mining coal seam or by
Small coal mine destroying infection region driving, driving face cross roof fall area and happen occasionally, and the prior art is using manually in no supporting
In the case where, using grillage filling and support, not only operator does not ensure that safely supporting can not be according to supporting surface not
With being adjusted, stability is poor, to affect the normal use of coal mine driving suspension device, therefore also reduces coal mine pick
Into the working efficiency of suspension device.
Summary of the invention
The invention overcomes the deficiencies of the prior art, and provides a kind of track self-shifting formula gibs to operate trolley,
Operation safety can significantly mitigate the physical labor intensity of worker, the construction of the various sections suitable for roof fall diameter greater than 1 meter,
Compact-sized, all-hydraulic control is flexible to operation, crawler travel, and displacement is convenient, and mobility is good, time saving, laborsaving.
In order to solve the above-mentioned technical problem, the technical solution adopted by the present invention are as follows: track self-shifting formula gib station
Vehicle, including supporting mechanism, steerable system, frame assembly and walking mechanism, the frame assembly are taper frame structure, the frame
Internal portion is equipped with M shape supporting beam, and the front-end and back-end of frame assembly are respectively equipped with the stabilizer blade for propping up trolley, the vehicle frame
The top of assembly is equipped with supporting mechanism and steerable system, and the two sides of the frame assembly are equipped with walking mechanism, the supporting mechanism
For the top for being arranged in frame assembly in square shape, the supporting mechanism includes sleeve, continued access column and clamping plate, the sleeve set
It is located at the outside of telescopic continued access column, the bottom of the continued access column is installed on frame assembly, the top of continued access column
Equipped with the clamping plate for stepping up sleeper, the clamping plate is in U-shape, and the bottom of clamping plate is equipped with ratchet, realizes clamping plate by rotating ratchet
For one side plate to another piece of side plate one-way movement, the walking mechanism includes that track rail assembly, tension buffer device and walking are hydraulic
Motor, the track rail assembly is H-shaped, is connected on frame assembly in the middle part of the track rail assembly, the two sides of the track rail assembly
Equipped with multiple guide wheels and sprocket wheel, the shaft of the sprocket wheel is connect with hydraulic motor travel motor, and the outside of the sprocket wheel is enclosed with shoe
Band, the guide wheel are located between two neighboring sprocket wheel, and the tension buffer device includes tensioning hydro-cylinder and buffer spring, described
Buffer spring is vertically arranged in sprocket wheel top, and the tensioning hydro-cylinder connect the mounting height of control guide wheel with guide wheel, described
Steerable system is connect with supporting mechanism and walking mechanism respectively, and the steerable system includes duplex gear pump, walk motor with hydraulic pressure
Manipulation valve, balancing brake valve and current divider, the duplex gear pump are connected with current divider, are connected separately with liquid on the current divider
Press running motor manipulation valve and balancing brake valve, the walk motor with hydraulic pressure manipulation valve and balancing brake valve with the hydraulic horse that walks
Up to connection.
Preferably, turntable is equipped between the telescopic continued access column and frame assembly, the turntable and manipulation are
System connection drives the rotation of continued access column by the rotation that steerable system controls turntable, changes the clamping plate at the top of adjacent continued access column
Between angle.
Preferably, the two sides of the bottom of the clamping plate are symmetrically arranged with floating cylinder, the other end of the floating cylinder and continuous
It is hinged to connect column, the floating cylinder is connect with steerable system by pipeline, is equipped between the floating cylinder and steerable system
Check valve.
Preferably, the inside of the clamping plate is equipped with corrugated protrusion.
Preferably, the supporting mechanism of square shape arrangement is substituted by cross suspension device, the cross suspension device
Including including pedestal, connecting column, hydraulic cylinder, cross support, U-board and spring, the pedestal is installed on frame assembly,
Upper spherical is hinged with connecting column, and the top of the connecting column is installed with cross support, the lower part of the cross cantilever of cross support
Hydraulic cylinder is hinged between connecting column, the cross cantilever upper spherical of cross support is hinged with the U-shaped that cross section is U-shaped
Plate, the both ends of U-board are respectively equipped with spring, and the other end of the spring is connect with cross support.
Preferably, two upright side walls of the U-board are elastic rubber.
Preferably, the top of two upright side walls of the U-board is equipped with multiple fins.
Preferably, the pedestal is telescopic column structure, and the bottom of the telescopic column structure is fixed with frame assembly
It connects, globular hinge has connecting column on the pars contractilis of telescopic column structure.
Preferably, it is equipped with guide post in the cross support and U-board, the both ends of spring are sleeved on the guide post
On.
Compared with the prior art, the invention has the beneficial effects that: (1) by crawler type walking mechanism it can guarantee carry out
The landform of underground complexity, tensioning hydro-cylinder and buffer spring control using walking mechanism are adapted to automatic moving type gib operation trolley
The sag of chain of crawler belt processed adjusts the ground practicability of crawler belt in real time；Guarantee the strong of vehicle frame using the taper frame structure of frame assembly
Degree sets up separately using conical projections simultaneously sets suspension arrangement or lighting device；The U-clamp board bottom portion of supporting mechanism is equipped with ratchet,
By a side plate of rotating ratchet realization clamping plate to another piece of side plate one-way movement, to realize that U-clamp plate steps up sleeper
It is effectively prevented sleeper swing, compact-sized, crawler travel, displacement is convenient, and mobility is good, time saving, laborsaving；(2) cross is utilized
Multiple tie points of suspension device, the mode of globular hinge, and with the use of top be that rubber structure, lower part are equipped with spring
U-board can promote the compactness of suspension device Yu mine wall surface, increase suspension device using the fin structure at the top of U-board
With the frictional force between mine wall surface, prevent from guaranteeing good supporting effect and higher peace there is a phenomenon where skidding when supporting
Quan Xing.
Detailed description of the invention
Following further describes the present invention with reference to the drawings.
Fig. 1 is the structural schematic diagram of the first embodiment of the present invention.
Fig. 2 is the supporting mechanism structural schematic diagram of the second embodiment of the present invention.
Fig. 3 is the supporting mechanism cross-sectional view of the second embodiment of the present invention.
In figure: 1 is supporting mechanism, and 2 be steerable system, and 3 be frame assembly, and 4 be walking mechanism, and 5 be cross suspension device,
501 be pedestal, and 502 be connecting column, and 503 be hydraulic cylinder, and 504 be cross support, and 505 be U-board, and 506 be spring.
Specific embodiment
First embodiment, as shown in Figure 1, track self-shifting formula gib of the present invention operation trolley, including supporting mechanism 1,
Steerable system 2, frame assembly 3 and walking mechanism 4, the frame assembly 3 are taper frame structure, are equipped with rice inside the framework
Font supporting beam, the front-end and back-end of frame assembly 3 are respectively equipped with the stabilizer blade for propping up trolley, the top of the frame assembly 3
If the two sides of the frame assembly 3 are equipped with walking mechanism 4, four supporting machines there are four supporting mechanism 1 and steerable system 2
Structure 1 is the top that frame assembly 3 is arranged in square shape, and the supporting mechanism 1 includes sleeve, continued access column and clamping plate, described
Sleeve is set in the outside of telescopic continued access column, and the bottom of the continued access column is installed on frame assembly, continued access column
Top be equipped with the clamping plate that steps up sleeper, the clamping plate is in U-shape, and the inside of the clamping plate is equipped with corrugated protrusion, to increase
Big clamp plate steps up frictional force when sleeper, prevents sleeper from shaking, and the bottom of clamping plate is equipped with ratchet, realizes clamping plate by rotating ratchet
A side plate to another piece of side plate one-way movement, the walking mechanism 4 includes track rail assembly, tension buffer device and walking liquid
Pressure motor, the track rail assembly is H-shaped, is connected on frame assembly 3 in the middle part of the track rail assembly, and the two of the track rail assembly
Side is equipped with multiple guide wheels and sprocket wheel, and the shaft of the sprocket wheel is connect with hydraulic motor travel motor, and the outside of the sprocket wheel is enclosed with
Crawler belt, track rail assembly use the combined type caterpillar chain of high-strength alloy steel making, and creeper tread is welded on Chain Link, Chain Link with
The mode that master track pin and chain rail apply interference fit is press fit together, and it is close that master track pin and the chain rail of crawler belt apply special cushion rubber
Envelope, avoids the abrasive grains such as silt particle, water and corrosive media from entering the mating surface of relative rotation, this novel crawler is greatly improved
The service life of crawler belt, that is, be used in rock gangway operation, is also avoided that the excessive wear of guide etc. and the generation of crawler belt snake phenomenon,
Thrust wheel, sprocket wheel, guide wheel operating condition also have the improvement of essence, the service life significantly improves, driving power with this corresponding
Loss is also decreased obviously.
Guide wheel is located between two neighboring sprocket wheel, and the tension buffer device includes tensioning hydro-cylinder and buffer spring, institute
It states buffer spring and is vertically arranged in sprocket wheel top, the tensioning hydro-cylinder connect the mounting height of control guide wheel with guide wheel,
The piston extension of locking oil cylinder pushes guide wheel Forward to adjust the overhang of upper track, the overhang general control of crawler belt for
10~20mm, overhang is excessive, the abrasion of crawler belt runout and aggravation Chain Link and guide wheel, sprocket faces when machine is walked, and
It is easy to happen chain phenomenon；Overhang is too small, and hoofing part power will increased dramatically.Pooling feature realized by buffer spring,
When machine shock be obstructed or crawler belt in be caught in hard object, spring-compressed plays the role of absorbing impact energy, buffering, to protect crawler belt
The safety of chain, driving device and each structural member.The steerable system 2 is connect with supporting mechanism 1 and walking mechanism 4 respectively, described
Steerable system 2 includes duplex gear pump, walk motor with hydraulic pressure manipulation valve, balancing brake valve and current divider, the duplex gear pump
It is connected with current divider, walk motor with hydraulic pressure manipulation valve and balancing brake valve, the hydraulic row are connected separately on the current divider
It walks motor manipulation valve and balancing brake valve is connect with hydraulic motor travel motor, operating system 2 is additionally provided with stabilizer blade and holds out against valve, left and right rows
Valve, high low speed switching valve, supporting mechanism lifting valve, service valve and operation handle are walked, realizes different move by adjusting each handle
Make, control valve is installed on station frame body, and plumbing arrangements are neat.
Turntable is equipped between the telescopic continued access column and frame assembly, the turntable is connect with steerable system 2, is led to
The rotation drive continued access column rotation that steerable system 2 controls turntable is crossed, the angle between the clamping plate at the top of adjacent continued access column is changed
Degree.
The two sides of the bottom of the clamping plate are symmetrically arranged with floating cylinder, and the other end and continued access column of the floating cylinder are cut with scissors
It connecing, the floating cylinder is connect with steerable system 2 by pipeline, check valve is equipped between the floating cylinder and steerable system 2,
Sleeper after the access of floating cylinder is opened on U-clamp plate contacts and floating cylinder adjustment compression cylinder position with colliery wall surface,
It is realized and is positioned using check valve, guarantee the compactness of the sleeper and colliery wall surface on U-clamp plate.
Walking mechanism 4 is by the 2 independent fuel feeding of duplex gear pump main pump of operating system, maximum working pressure 16MPa.Supporting machine
Structure oil cylinder is by the independent fuel feeding of duplex gear pump auxiliary pump, and by the way of oil return filter, the filtering accuracy of oil filter is whole system
20μm.In walking mechanism circuit, high pressure oil arrives separately at left and right running motor by main pump, manipulation valve, balancing brake valve, should
Motor itself has deceleration device, and motor rotation flange is directly connect with sprocket ring, eliminates reduction box organizations.It directly drives
Machine moves forward or back, and through balancing brake valve, manipulation valve, oil filter oil return box, left and right motor is each to have independent Leakage Energy by oneself for oil return
Manage logical fuel tank.Position is unable to oil sealing in left and right running motor operation valve, i.e. the pipeline of reversal valve is communicated with oil return line, to reach
The purpose of part repairing.In the hydraulic circuit of supporting mechanism, high pressure oil reaches elevating ram through auxiliary pump, reversal valve；System pressure
It is adjusted by the adjusting screw in the safety overflow valve of reversal valve oil inlet side.Air cleaner is mounted on fuel tank top surface,
Air cleaner is communicated with atmosphere.Stabilizer blade controls oil cylinder by the independent manipulation and control of reversal valve, to guarantee the branch for having stable and lasting
Support force；Operation, which finishes, must first withdraw oil cylinder when needing transfer location, the continued access column of supporting mechanism is fallen back on bogie frame, protect
Demonstrate,prove the stability of vehicle operation.
Second embodiment is to substitute the cross suspension device 5 of supporting mechanism 1 in the structure basis of first embodiment, ten
Word suspension device 5 includes pedestal 501, connecting column 502, hydraulic cylinder 503, cross support 504, U-board 505 and spring 506, institute
It states pedestal 501 to be installed on frame assembly 3, upper part globular hinge has connecting column 502, and the preferably described pedestal 501 is flexible
The bottom of column structure, the telescopic column structure is fixedly connected with frame assembly 3, spherical on the pars contractilis of telescopic column structure
It is hinged with connecting column 502, telescopic pedestal 501 can make trolley be applicable in different size of colliery.The connecting column 502 it is upper
Portion is installed with cross support 504, is hinged with hydraulic cylinder between the lower part and connecting column 502 of the cross cantilever of cross support 504
503, the cross cantilever upper spherical of cross support 504 is hinged with the U-board 505 that cross section is U-shaped, the both ends of U-board 505
It is respectively equipped with spring 506, the other end of the spring 506 is connect with cross support 504, the preferably described cross support 504 and U
Guide post is equipped on shape plate 505, the both ends of spring 506 are sleeved in the guide post, to prevent spring 506 in compression process
In fly out and accidentally injure staff.Preferably, two upright side walls of U-board 505 are elastic rubber, utilize the elasticity of elastic rubber
Compression promotes the compactness of U-board 505 and colliery wall surface, and the top of two upright side walls of the U-board 505 is equipped with multiple convex
Rib increases the frictional force of cross suspension device and colliery wall surface using fin, prevents the phenomenon that skidding is generated in Bracing Process.
By the globular hinge structure of many places can realize entire cross suspension device 5 can follow the fluctuating of colliery wall surface into
The oil pressure of hydraulic cylinder 503 is locked after U-board 505 is bonded completely with colliery wall surface, passes through manipulation by the adjustment of row compactness
System 2 controls pedestal 501 and rises, and increases the contact force of U-board 505 and colliery wall surface, realizes the interim branch of colliery inner working face
Shield shrinks pedestal 501, while laying down the oil pressure of hydraulic cylinder 503, U-board 505 when operation completion needs to remove supporting
It restPoses, operation trolley is driven out to colliery.
The embodiment of the present invention is explained in detail above in conjunction with attached drawing, but the present invention is not limited to above-mentioned implementations
Example, within the knowledge of a person skilled in the art, can also make without departing from the purpose of the present invention
Various change out.
Claims (9)
1. track self-shifting formula gib operates trolley, it is characterised in that: including supporting mechanism (1), steerable system (2), vehicle frame
Assembly (3) and walking mechanism (4), the frame assembly (3) are taper frame structure, are equipped with M shape inside the framework and support
Beam, the front-end and back-end of frame assembly (3) are respectively equipped with the stabilizer blade for propping up trolley, and the top of the frame assembly (3) is equipped with
The two sides of supporting mechanism (1) and steerable system (2), the frame assembly (3) are equipped with walking mechanism (4), the supporting mechanism (1)
For the top for being arranged in frame assembly (3) in square shape, the supporting mechanism (1) includes sleeve, continued access column and clamping plate, described
Sleeve is set in the outside of telescopic continued access column, and the bottom of the continued access column is installed on frame assembly, continued access column
Top be equipped with the clamping plate that steps up sleeper, the clamping plate is in U-shape, and the bottom of clamping plate is equipped with ratchet, is realized by rotating ratchet
One side plate of clamping plate to another piece of side plate one-way movement, the walking mechanism (4) include track rail assembly, tension buffer device and
Hydraulic motor travel motor, the track rail assembly is H-shaped, is connected on frame assembly (3) in the middle part of the track rail assembly, the crawler belt
The two sides of assembly are equipped with multiple guide wheels and sprocket wheel, and the shaft of the sprocket wheel is connect with hydraulic motor travel motor, outside the sprocket wheel
Portion is enclosed with crawler belt, and the guide wheel is located between two neighboring sprocket wheel, and the tension buffer device includes that tensioning hydro-cylinder is gentle
Spring is rushed, the buffer spring is vertically arranged in sprocket wheel top, and the tensioning hydro-cylinder connect the peace of control guide wheel with guide wheel
Dress height, the steerable system (2) connect with supporting mechanism (1) and walking mechanism (4) respectively, and the steerable system (2) includes
Duplex gear pump, walk motor with hydraulic pressure manipulation valve, balancing brake valve and current divider, the duplex gear pump are connected with current divider,
Be connected separately with walk motor with hydraulic pressure manipulation valve and balancing brake valve on the current divider, the walk motor with hydraulic pressure manipulation valve and
Balancing brake valve is connect with hydraulic motor travel motor.
2. track self-shifting formula gib according to claim 1 operates trolley, it is characterised in that: described is telescopic
Turntable is equipped between continued access column and frame assembly, the turntable is connect with steerable system (2), is controlled by steerable system (2)
The rotation of turntable drives the rotation of continued access column, changes the angle between the clamping plate at the top of adjacent continued access column.
3. track self-shifting formula gib according to claim 1 operates trolley, it is characterised in that: the bottom of the clamping plate
Portion two sides are symmetrically arranged with floating cylinder, and the other end and continued access column of the floating cylinder are hinged, the floating cylinder and manipulation
System (2) is connected by pipeline, and check valve is equipped between the floating cylinder and steerable system (2).
4. track self-shifting formula gib according to claim 1 operates trolley, it is characterised in that: the clamping plate it is interior
Side is equipped with corrugated protrusion.
5. track self-shifting formula gib according to claim 1 operates trolley, it is characterised in that: the square shape cloth
The supporting mechanism (1) set is substituted by cross suspension device (5), and the cross suspension device (5) includes including pedestal (501), even
Column (502), hydraulic cylinder (503), cross support (504), U-board (505) and spring (506) are connect, the pedestal (501) is fixed
On frame assembly (3), upper part globular hinge has connecting column (502), and the top of the connecting column (502) is installed with cross-shaped
Seat (504), is hinged with hydraulic cylinder (503), ten between the lower part and connecting column (502) of the cross cantilever of cross support (504)
The cross cantilever upper spherical of word support (504) is hinged with the U-board (505) that cross section is U-shaped, the both ends of U-board (505)
It is respectively equipped with spring (506), the other end of the spring (506) is connect with cross support (504).
6. track self-shifting formula gib according to claim 5 operates trolley, it is characterised in that: the U-board
(505) two upright side walls are elastic rubber.
7. track self-shifting formula gib according to claim 6 operates trolley, it is characterised in that: the U-board
(505) top of two upright side walls is equipped with multiple fins.
8. track self-shifting formula gib according to claim 7 operates trolley, it is characterised in that: the pedestal
It (501) is telescopic column structure, the bottom of the telescopic column structure is fixedly connected with frame assembly (3), telescopic column structure
Pars contractilis on globular hinge have connecting column (502).
9. track self-shifting formula gib according to claim 8 operates trolley, it is characterised in that: the cross support
(504) and in U-board (505) it is equipped with guide post, the both ends of spring (506) are sleeved in the guide post.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910186140.5A CN109869174A (en) | 2019-03-12 | 2019-03-12 | Track self-shifting formula gib operates trolley |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910186140.5A CN109869174A (en) | 2019-03-12 | 2019-03-12 | Track self-shifting formula gib operates trolley |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109869174A true CN109869174A (en) | 2019-06-11 |
Family
ID=66920219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910186140.5A Pending CN109869174A (en) | 2019-03-12 | 2019-03-12 | Track self-shifting formula gib operates trolley |
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| Country | Link |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022094A (en) * | 2019-12-19 | 2020-04-17 | 长安大学 | Cutting and supporting dual-purpose mechanical equipment and method for treating tunnel surrounding rock |
| CN112355839A (en) * | 2020-11-02 | 2021-02-12 | 蒋昌俊 | Processing and manufacturing method of environment-friendly and energy-saving building glass curtain wall |
| CN114000905A (en) * | 2021-11-05 | 2022-02-01 | 梁献茹 | Supporting mechanism for tunnel face reinforcement construction in shield machine cabin |
| CN114293987A (en) * | 2021-11-23 | 2022-04-08 | 中煤科工集团沈阳设计研究院有限公司 | Wheel bucket excavator suitable for excavating harder materials |
| CN114320300A (en) * | 2021-11-23 | 2022-04-12 | 中煤科工集团沈阳设计研究院有限公司 | Wheel bucket excavator suitable for excavating viscous materials |
-
2019
- 2019-03-12 CN CN201910186140.5A patent/CN109869174A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111022094A (en) * | 2019-12-19 | 2020-04-17 | 长安大学 | Cutting and supporting dual-purpose mechanical equipment and method for treating tunnel surrounding rock |
| CN112355839A (en) * | 2020-11-02 | 2021-02-12 | 蒋昌俊 | Processing and manufacturing method of environment-friendly and energy-saving building glass curtain wall |
| CN112355839B (en) * | 2020-11-02 | 2022-07-19 | 山东昌建幕墙装饰有限公司 | Processing and manufacturing method of environment-friendly and energy-saving building glass curtain wall |
| CN114000905A (en) * | 2021-11-05 | 2022-02-01 | 梁献茹 | Supporting mechanism for tunnel face reinforcement construction in shield machine cabin |
| CN114293987A (en) * | 2021-11-23 | 2022-04-08 | 中煤科工集团沈阳设计研究院有限公司 | Wheel bucket excavator suitable for excavating harder materials |
| CN114320300A (en) * | 2021-11-23 | 2022-04-12 | 中煤科工集团沈阳设计研究院有限公司 | Wheel bucket excavator suitable for excavating viscous materials |
| CN114320300B (en) * | 2021-11-23 | 2023-09-22 | 中煤科工集团沈阳设计研究院有限公司 | Wheel bucket excavator suitable for excavating viscous materials |
| CN114293987B (en) * | 2021-11-23 | 2023-11-10 | 中煤科工集团沈阳设计研究院有限公司 | Wheel bucket excavator suitable for excavating harder materials |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20190611 |
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| WD01 | Invention patent application deemed withdrawn after publication |