CN219348513U - Crushing room paving device - Google Patents
Crushing room paving device Download PDFInfo
- Publication number
- CN219348513U CN219348513U CN202223367542.1U CN202223367542U CN219348513U CN 219348513 U CN219348513 U CN 219348513U CN 202223367542 U CN202223367542 U CN 202223367542U CN 219348513 U CN219348513 U CN 219348513U
- Authority
- CN
- China
- Prior art keywords
- crushing chamber
- base
- movable base
- crushing
- paving
- 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.)
- Active
Links
- 239000002245 particle Substances 0.000 claims abstract description 36
- 230000007246 mechanism Effects 0.000 claims description 24
- 238000001514 detection method Methods 0.000 abstract description 6
- 238000000034 method Methods 0.000 abstract description 6
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Crushing And Grinding (AREA)
- Disintegrating Or Milling (AREA)
Abstract
The embodiment of the disclosure provides a crushing chamber paving device which is used for filling a crushing chamber and paving propping agent particles in the crushing chamber, and comprises a base, a support frame, a blanking hopper, a crushing chamber movable base and a crushing chamber fixing assembly; the support frame is fixed on the base, a blanking hopper is arranged on the top of the support frame, and the blanking hopper is provided with a discharge hole; the movable base of the crushing chamber is selectively fixed on the base; wherein, the central line of the movable base of the crushing chamber is collinear with the central line of the blanking hopper; the crushing chamber movable base is used for placing the crushing chamber; the crushing chamber fixing assembly is used for connecting the crushing chamber to the supporting frame. According to the crushing chamber paving device, proppant particles do not need to be filled into the crushing chamber manually and are paved manually, so that human errors caused by the detection process of the crushing rate of the proppant particles are reduced, and effective proppant performance data are provided for fracturing designers.
Description
Technical Field
The embodiment of the disclosure belongs to the technical field of manufacturing equipment, and particularly relates to a crushing chamber paving device.
Background
The fracturing propping agent breaking rate is an important performance index, the filling and paving of a breaking chamber are important links for influencing the detection result, and the manual filling and paving method is adopted in the current industry standard, so that the detection result is influenced by human factors. Finally, the designer cannot effectively select a proper propping agent, which causes adverse results to the fracturing construction.
In view of the above, it is desirable to provide a crushing chamber paving apparatus that is reasonably designed and that can effectively ameliorate the above problems.
Disclosure of Invention
Embodiments of the present disclosure aim to solve at least one of the technical problems existing in the prior art, and provide a crushing chamber paving device.
The embodiment of the disclosure provides a crushing chamber paving device which is used for filling a crushing chamber and paving propping agent particles in the crushing chamber, and comprises a base, a support frame, a blanking hopper, a crushing chamber movable base and a crushing chamber fixing assembly;
the support frame is fixed on the base, the blanking hopper is arranged on the top of the support frame in a supporting mode, and the blanking hopper is provided with a discharge hole;
the movable base of the crushing chamber is selectively fixed on the base; wherein the central line of the movable base of the crushing chamber is collinear with the central line of the blanking hopper;
the movable base of the crushing chamber is used for placing the crushing chamber;
the crushing chamber fixing assembly is used for connecting the crushing chamber with the supporting frame.
Optionally, the base is provided with a first groove, and the movable base of the crushing chamber is arranged in the first groove.
Illustratively, the top of the movable base of the crushing chamber is provided with a second groove;
the second groove is used for placing the crushing chamber.
Optionally, the device further comprises a fixing member;
the movable base of the crushing chamber is selectively fixed on the base through the fixing piece.
Optionally, the crushing chamber fixing assembly comprises a fixer and two fixing rods;
the fixer is sleeved on the outer side wall of the crushing chamber;
the two fixing rods are symmetrically distributed on two sides of the fixer along the first direction; wherein,,
the first end of the fixing rod is movably connected with the supporting frame, and the second end of the fixing rod is fixedly connected with the fixer.
Optionally, the device further comprises a drive mechanism;
the first end of the driving mechanism is movably connected with the supporting frame, and the second end of the driving mechanism is movably connected with the fixer;
the driving mechanism is used for driving the crushing chamber to reciprocate and tilt along the second direction.
Optionally, the driving mechanism is used for driving the crushing chamber to reciprocate in the second direction, and the angle range between the reciprocating tilting motion and the horizontal plane is 45-135 degrees.
Optionally, the device further comprises a splash pipe, and the splash pipe is inserted into the top end of the crushing chamber.
Optionally, a protruding part is arranged on the outer side wall of the lower end of the splash-proof pipe, and the protruding part is erected on the top end of the side wall of the crushing chamber.
Optionally, the device further comprises a valve, and the valve is arranged at the discharge hole.
The crushing chamber paving device is used for filling the crushing chamber and paving the proppant particles in the crushing chamber, the supporting frame is fixed on the base, the top of the supporting frame is provided with the blanking hopper, the blanking hopper is provided with the discharge hole, the movable base of the crushing chamber is used for placing the crushing chamber, so that the height of the proppant particles in the blanking hopper falling into the crushing chamber is certain, and the error of manually filling the crushing chamber is reduced; the crushing chamber fixing assembly is used for connecting the crushing chamber to the supporting frame and has a fixing effect on the crushing chamber; the movable base of the crushing chamber is selectively fixed on the base, wherein the center line of the movable base of the crushing chamber is collinear with the center line of the blanking hopper, when the crushing chamber is filled, the movable base of the crushing chamber is fixed on the base, when proppant particles in the crushing chamber are paved, the movable base of the crushing chamber is movably arranged on the base, and the movable base of the crushing chamber can reciprocate on the base so as to drive the crushing chamber to reciprocate, and then the proppant particles in the crushing chamber are paved, so that errors in the manual paving process are reduced.
According to the crushing chamber paving device, proppant particles do not need to be filled into the crushing chamber manually and are paved manually, so that human errors caused by the detection process of the crushing rate of the proppant particles are reduced, and effective proppant performance data are provided for fracturing designers.
Drawings
FIG. 1 is a schematic view of a crushing chamber paving apparatus according to one embodiment of the present disclosure;
FIG. 2 is a schematic view of an assembled crushing chamber paving apparatus according to another embodiment of the present disclosure;
FIG. 3 is a schematic view of an assembled crushing chamber paving apparatus according to another embodiment of the present disclosure;
FIG. 4 is a right rotation 90 of the breaking chamber paving apparatus of FIG. 3 in an embodiment of the present disclosure
Schematic structural diagram after the degree;
fig. 5 is a top view of a crushing chamber paving apparatus according to another embodiment of the present disclosure assembled with a crushing chamber.
Detailed Description
In order to enable those skilled in the art to better understand the technical solutions of the embodiments of the present disclosure, the embodiments of the present disclosure are described in further detail below with reference to the accompanying drawings and detailed description.
As shown in fig. 1, the presently disclosed embodiments provide a crushing chamber paving apparatus 100 for filling a crushing chamber 200 and paving proppant particles within the crushing chamber 200, the apparatus 100 comprising a base 110, a support frame 120, a blanking hopper 130, a crushing chamber moveable base 140, and a crushing chamber stationary assembly 150.
The support frame 120 is fixed in base 110, and the top of support frame 120 erects blanking fill 130, and blanking fill 130 has discharge gate 131.
The crushing chamber movable base 140 is used for placing the crushing chamber 200. The proppant particles are filled into the crushing chamber 200 through the falling hopper 130, so that the height of the proppant particles in the falling hopper 130 falling into the crushing chamber 200 is constant, and the error of manually filling the crushing chamber is reduced.
The crushing chamber movable base 140 is selectively fixed to the base 110. Specifically, when the crushing chamber 200 needs to be filled with the proppant particles, the movable base 140 of the crushing chamber is fixed to the base 110; when it is desired to level the proppant particles in the crushing chamber 200, the movable base 140 of the crushing chamber is movably disposed on the base 110, that is, the movable base 140 of the crushing chamber can reciprocate on the base 110.
Wherein the center line of the movable base 140 of the crushing chamber is collinear with the center line of the hopper 130, that is, the movable base 140 of the crushing chamber is located directly below the hopper 130, that is, the crushing chamber 200 placed on the movable base 140 of the crushing chamber is located directly below the hopper 130, so that the proppant particles in the hopper 130 can be stacked in the crushing chamber 200 in a cone shape along the center line. In this embodiment, the crushing chamber 200 is a cylinder with an opening at the top.
The crushing chamber stator assembly 150 is used for connecting the crushing chamber 200 to the support frame 120. The crushing chamber fixing assembly 150 serves to fix the crushing chamber 200.
In use, the crushing chamber movable base 140 is fixed to the base 110, wherein the centerline of the crushing chamber movable base 140 is collinear with the centerline of the hopper 130. The crushing chamber securing assembly 150 is connected to the support bracket 120. The crushing chamber 200 is placed on the movable base 140 of the crushing chamber with the opening upwards, the crushing chamber 200 is fixed on the supporting frame 120 through the crushing chamber fixing component 160, the proppant particles with required weight are poured into the blanking hopper 130, the proppant particles naturally fall down through the discharging hole, and after the whole crushing chamber 200 is filled, the movable base 140 of the crushing chamber is movably arranged on the base 110, that is, the movable base 140 of the crushing chamber can reciprocate on the base 110 to drive the crushing chamber 200 to reciprocate and incline, so that the proppant particles accumulated in the crushing chamber 200 are paved.
According to the crushing chamber paving device, proppant particles do not need to be filled into the crushing chamber manually and are paved manually, so that human errors caused by the detection process of the crushing rate of the proppant particles are reduced, and effective proppant performance data are provided for fracturing designers.
Illustratively, as shown in FIG. 1, the base 110 is provided with a first recess (not shown) within which is disposed a crushing chamber moveable base 140. The first groove is arc-shaped. That is, as shown in fig. 1, the bottom of the movable base 140 of the crushing chamber is hemispherical, so that the hemispherical bottom of the movable base 140 of the crushing chamber can move in the circular arc-shaped first groove.
Illustratively, as shown in FIG. 1, the top of the crushing chamber movable base 140 is provided with a second recess 141, the second recess 141 being for receiving the crushing chamber 200. The second recess 141 is circular in shape, that is, as shown in fig. 2, the crushing chamber 200 is placed in the circular second recess 141 such that the crushing chamber 200 can perform a reciprocating tilting motion along with the reciprocating tilting motion of the movable base 140 of the crushing chamber.
Illustratively, as shown in FIGS. 1-4, the crushing chamber paving apparatus 100 further includes a securing member 160, and the crushing chamber movable base 140 is selectively secured to the base 110 by the securing member 160. Specifically, when the proppant particles are filled into the crushing chamber 200, the crushing chamber movable base 140 is fixed to the base 110 by the fixing members 160, preventing the crushing chamber movable base 140 from moving. When the proppant particles in the crushing chamber 200 need to be spread, the fixing member 160 needs to be removed to enable the movable base 140 of the crushing chamber to reciprocate and tilt, so as to drive the crushing chamber 200 to reciprocate and tilt, and spread the proppant in the crushing chamber 200.
Specifically, as shown in fig. 1 to 4, in the present embodiment, the crushing chamber paving apparatus 100 includes 2 fixing members 160 and is symmetrically distributed at an edge region of the crushing chamber movable base 140. The fixing member 160 may be a latch passing through the edge region of the movable base 140 of the crushing chamber (i.e., the wall of the second recess 141) and the base 110 in order to fix the movable base 140 of the crushing chamber to the base 110. Of course, the fixing member 160 may have other structures, and the present embodiment is not limited thereto, and may be selected according to actual needs.
Illustratively, as shown in fig. 3 and 5, the crushing chamber securing assembly 150 includes a retainer 151 and two securing rods 152.
The holder 151 is sleeved on the outer side wall of the crushing chamber 200. Specifically, as shown in fig. 5, the holder 151 is sleeved on the outer side wall of the crushing chamber 200 in a ring shape.
The two fixing bars 152 are symmetrically distributed on both sides of the holder 151 along the first direction. The first end of the fixing rod 152 is movably connected with the supporting frame 120, and the second end of the fixing rod 152 is fixedly connected with the fixing device 151.
In this embodiment, the first end of the fixing rod 152 is movably connected to the supporting frame 120, and the second end of the fixing rod 152 is fixedly connected to the fixing device 151. Thus, when it is desired to level the proppant particles in the crushing chamber 200, the crushing chamber 200 can be tilted back and forth to level the proppant particles in the crushing chamber 200, since the first end of the fixing rod 152 is movably connected to the supporting frame 120.
As shown in fig. 3, a bearing 152a is disposed at a first end of the fixing rod 152, the first end of the fixing rod 152 is movably connected to the supporting frame 120 through the bearing 152a, and a second end of the fixing rod 152 is fixedly connected to the fixing device 151 through a bolt hole.
In this embodiment, the fixing rod 152 may be a bolt, that is, a first end of the bolt is movably connected to the supporting frame 120 through a bearing 152a, and a second end of the bolt is fixedly connected to a screw hole of the fixing device 151. Note that, the fixing rod 152 may have other structures, and the present embodiment is not limited specifically.
Illustratively, as shown in FIG. 4, the breaking-chamber paving apparatus 100 further includes a drive mechanism 170. The first end of the driving mechanism 170 is movably connected with the supporting frame 120, and the second end of the driving mechanism 170 is movably connected with the fixing device 151.
In this embodiment, a first end of the driving mechanism 170 may be hinged with the support frame 120, and a second end of the driving mechanism 170 may be hinged with the holder 151. Of course, other movable connection modes can be adopted, the embodiment is not particularly limited, and the selection can be performed according to actual needs.
The driving mechanism 170 is used to drive the crushing chamber 200 to reciprocate in a second direction. Wherein the first direction and the second direction are perpendicular to each other. In this embodiment, the driving mechanism 170 is a cylinder, and the cylinder is provided with a cylinder hand-operated valve, and the crushing chamber 200 is driven to reciprocate and tilt by slowly starting the cylinder hand-operated valve. That is, the speed at which the drive mechanism 170 drives the crushing chamber to reciprocate in a tilting motion is constant. Of course, the driving mechanism 170 may be other driving mechanisms, and may be selected according to actual needs.
Illustratively, the drive mechanism 170 is configured to drive the crushing chamber 200 in a reciprocating tilting motion in the second direction at an angle in the range of 45 to 135 with respect to the horizontal. That is, the amplitude of the reciprocal tilting motion of the crushing chamber 200 is constant, and the proppant particles in the crushing chamber 200 can be better spread out within this range of the amplitude of the reciprocal tilting motion. The specific angle is not particularly limited, and the embodiment may be selected according to actual needs.
In this embodiment, the crushing chamber is driven by the drive mechanism to reciprocate in a second direction, wherein the amplitude of the reciprocating tilting motion of the crushing chamber is constant and the speed of the reciprocating tilting motion is constant, thereby flattening the proppant particles within the crushing chamber. Compared with the prior art that proppant particles are paved manually, the proppant particles are paved by driving the crushing chamber through the driving mechanism, so that human errors caused in the detection process of the breakage rate of the proppant particles are reduced, and effective proppant performance data are provided for fracturing designers.
Illustratively, as shown in FIG. 2, the crushing chamber paving apparatus 100 further includes a splash guard 180, the splash guard 180 being interposed at the top end of the crushing chamber 200. The height of the splash guard 180 is not particularly limited, and may be selected according to actual needs, so long as the splash guard can play a role.
Illustratively, as shown in fig. 2, a protrusion 181 is provided on the outer sidewall of the lower end of the splash guard 180, and the protrusion 181 is erected on the top end of the sidewall of the crushing chamber 200, thereby fixing the splash guard 180 to the top end of the sidewall of the crushing chamber 200.
When the crushing chamber 200 is filled with the proppant particles, the splash guard 180 is inserted into the top end of the crushing chamber 200; when it is desired to level the proppant particles within the crushing chamber 200, the splash guard 180 is removed from the top of the crushing chamber 200.
In the present embodiment, by providing the splash guard 180 at the top end of the crushing chamber 200, the proppant particles can be prevented from splashing out when naturally falling from the blanking hopper 130.
Illustratively, as shown in FIG. 1, the breaking chamber paving apparatus 100 further includes a valve 132, the valve 132 being disposed at the discharge outlet 131. Valve 132 may control the opening and closing of outlet 131. In this embodiment, the valve 132 is a rubber valve, when blanking is needed, the valve 132 is opened, the discharge port 131 is opened, and the proppant particles fall out from the discharge port 131; when blanking is not needed, the valve 132 is closed, and the discharge port 131 is closed.
As shown in fig. 1 to 5, the working principle of the breaking-chamber paving apparatus 100 of the present embodiment is as follows:
the valve 132 is closed, the fixing member 160 is inserted into the crushing chamber movable base 140 and the base 110, the crushing chamber movable base 140 is fixed, the crushing chamber movable base 140 is prevented from moving, and the crushing chamber fixing assembly 150 is connected to the supporting frame 120. The crushing chamber 200 is placed with its opening upwards in the crushing chamber movable base 140. And tightens the fixator 151 in the crushing chamber fixing assembly 150 to fix the crushing chamber 200. The splash guard 180 is inserted into the top end of the crushing chamber 200, the propping agent with required weight is led into the blanking hopper 130, the valve 132 is opened to enable the propping agent to naturally fall, after the propping agent is fully filled into the crushing chamber 200, the splash guard 180 is taken out, the fixing piece 160 is pulled out, the driving mechanism 170 is slowly started, in this embodiment, the cylinder hand-turning valve is slowly started, the cylinder drives the crushing chamber 200 to reciprocate in the second direction, wherein the angle range between the reciprocating tilting motion of the cylinder driving the crushing chamber 200 in the second direction and the horizontal plane is adjustable, and then the propping agent particles in the crushing chamber 200 are paved.
It is to be understood that the above implementations are merely exemplary implementations employed to illustrate the principles of the disclosed embodiments, which are not limited thereto. Various modifications and improvements may be made by those skilled in the art without departing from the spirit and substance of the embodiments of the disclosure, and these modifications and improvements are also considered to be within the scope of the embodiments of the disclosure.
Claims (10)
1. The device is used for filling the crushing chamber and paving the propping agent particles in the crushing chamber and is characterized by comprising a base, a supporting frame, a blanking hopper, a crushing chamber movable base and a crushing chamber fixing assembly;
the support frame is fixed on the base, the blanking hopper is arranged on the top of the support frame in a supporting mode, and the blanking hopper is provided with a discharge hole;
the movable base of the crushing chamber is selectively fixed on the base; wherein the central line of the movable base of the crushing chamber is collinear with the central line of the blanking hopper;
the movable base of the crushing chamber is used for placing the crushing chamber;
the crushing chamber fixing assembly is used for connecting the crushing chamber with the supporting frame.
2. The crushing chamber paving apparatus of claim 1, wherein the base is provided with a first recess in which the crushing chamber movable base is disposed.
3. The crushing chamber paving apparatus of claim 1, wherein a second recess is provided at a top of the crushing chamber movable base;
the second groove is used for placing the crushing chamber.
4. A crushing chamber paving apparatus according to any of claims 1 to 3, further comprising a securing member;
the movable base of the crushing chamber is selectively fixed on the base through the fixing piece.
5. A crushing chamber paving apparatus according to any of claims 1 to 3, wherein the crushing chamber fixing assembly comprises a holder and two fixing bars;
the fixer is sleeved on the outer side wall of the crushing chamber;
the two fixing rods are symmetrically distributed on two sides of the fixer along the first direction; wherein,,
the first end of the fixing rod is movably connected with the supporting frame, and the second end of the fixing rod is fixedly connected with the fixer.
6. The crushing chamber paving apparatus of claim 5, further comprising a drive mechanism;
the first end of the driving mechanism is movably connected with the supporting frame, and the second end of the driving mechanism is movably connected with the fixer;
the driving mechanism is used for driving the crushing chamber to reciprocate and tilt along the second direction.
7. The crushing chamber paving apparatus of claim 6,
the driving mechanism is used for driving the crushing chamber to reciprocate in the second direction and to tilt at an angle of 45-135 degrees with the horizontal plane.
8. A crushing chamber paving apparatus according to any of claims 1 to 3, further comprising a splash guard inserted at the top end of the crushing chamber.
9. The crushing chamber paving apparatus of claim 8, wherein the splash guard is provided with a projection on a lower outer sidewall thereof, the projection being provided on a top end of the crushing chamber sidewall.
10. A crushing chamber paving apparatus according to any of claims 1 to 3, further comprising a valve disposed at the outlet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223367542.1U CN219348513U (en) | 2022-12-15 | 2022-12-15 | Crushing room paving device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223367542.1U CN219348513U (en) | 2022-12-15 | 2022-12-15 | Crushing room paving device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219348513U true CN219348513U (en) | 2023-07-14 |
Family
ID=87077528
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223367542.1U Active CN219348513U (en) | 2022-12-15 | 2022-12-15 | Crushing room paving device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219348513U (en) |
-
2022
- 2022-12-15 CN CN202223367542.1U patent/CN219348513U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN219348513U (en) | Crushing room paving device | |
| CN110124784B (en) | Traditional chinese medicine mask powder crushing apparatus | |
| CN204220082U (en) | Medical oscillation device | |
| CN117053910B (en) | Weighing equipment for food raw material addition | |
| CN1636627A (en) | Separatory funnel support for oscillating machine | |
| CN216073028U (en) | Milk beverage canning equipment | |
| CN216539437U (en) | Anti-blocking UHPC ultrahigh-performance concrete raw material screening device | |
| CN209579191U (en) | Cloth boring device | |
| CN210584807U (en) | A shedding mechanism and mixer for rostone diamond stone vertical mixer | |
| CN210523050U (en) | Calcite is broken with multilayer screening plant | |
| CN214812390U (en) | Rubber vulcanization accelerator preparation facilities | |
| CN108362178B (en) | Automatic tube housing installation device and method | |
| CN219464074U (en) | Vertical sorting machine, landslide assembly for vertical sorting machine and material distributing mechanism | |
| CN215842632U (en) | A material agitating unit for construction | |
| CN215389919U (en) | Vibrating screening device of impact crusher | |
| CN219051538U (en) | Graded discharging sand mill | |
| CN218460094U (en) | Gluconolactone is with high-efficient circular rocking sieve | |
| CN115046082B (en) | On-spot survey and drawing device of building engineering cost | |
| CN221085442U (en) | Stirring device for water quality detection | |
| CN218340394U (en) | Vegetable and fruit classifying and screening device | |
| KR102503302B1 (en) | Apparatus for mixing a sealants | |
| CN112722494A (en) | Material taking device | |
| CN221091607U (en) | Bag breaking mechanism for bale breaker | |
| CN218963223U (en) | Sand screening device for building construction | |
| CN220514732U (en) | Fluorescent material screening device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |