CN220426111U - Nonmetallic ore processing cleaning equipment - Google Patents
Nonmetallic ore processing cleaning equipment Download PDFInfo
- Publication number
- CN220426111U CN220426111U CN202321660942.3U CN202321660942U CN220426111U CN 220426111 U CN220426111 U CN 220426111U CN 202321660942 U CN202321660942 U CN 202321660942U CN 220426111 U CN220426111 U CN 220426111U
- Authority
- CN
- China
- Prior art keywords
- cleaning
- fixedly connected
- head connecting
- washs
- liquid inlet
- 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
- 238000004140 cleaning Methods 0.000 title claims abstract description 126
- 244000261422 Lysimachia clethroides Species 0.000 claims abstract description 23
- 229910052751 metal Inorganic materials 0.000 claims abstract description 23
- 239000002184 metal Substances 0.000 claims abstract description 23
- 230000000670 limiting effect Effects 0.000 claims abstract description 8
- 239000007788 liquid Substances 0.000 claims description 24
- 239000007921 spray Substances 0.000 claims description 15
- 230000005540 biological transmission Effects 0.000 claims description 9
- 230000000149 penetrating effect Effects 0.000 claims description 2
- 238000011010 flushing procedure Methods 0.000 abstract description 7
- 125000003003 spiro group Chemical group 0.000 abstract description 3
- 238000002347 injection Methods 0.000 abstract description 2
- 239000007924 injection Substances 0.000 abstract description 2
- 241000973497 Siphonognathus argyrophanes Species 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- WKBOTKDWSSQWDR-UHFFFAOYSA-N Bromine atom Chemical compound [Br] WKBOTKDWSSQWDR-UHFFFAOYSA-N 0.000 description 1
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- GDTBXPJZTBHREO-UHFFFAOYSA-N bromine Substances BrBr GDTBXPJZTBHREO-UHFFFAOYSA-N 0.000 description 1
- 229910052794 bromium Inorganic materials 0.000 description 1
- 229910052593 corundum Inorganic materials 0.000 description 1
- 239000010431 corundum Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- PNDPGZBMCMUPRI-UHFFFAOYSA-N iodine Chemical compound II PNDPGZBMCMUPRI-UHFFFAOYSA-N 0.000 description 1
- 159000000003 magnesium salts Chemical class 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 159000000001 potassium salts Chemical class 0.000 description 1
- NIFIFKQPDTWWGU-UHFFFAOYSA-N pyrite Chemical compound [Fe+2].[S-][S-] NIFIFKQPDTWWGU-UHFFFAOYSA-N 0.000 description 1
- 239000011028 pyrite Substances 0.000 description 1
- 229910052683 pyrite Inorganic materials 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000011593 sulfur Substances 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 238000011282 treatment Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Cleaning By Liquid Or Steam (AREA)
Abstract
The utility model discloses a nonmetallic ore processing and cleaning device, which comprises: cleaning device rack, cleaning device rack one end fixedly connected with washs the side cabinet, washs side cabinet top one end fixedly connected with and washs first connecting seat, washs first connecting seat one end spiro union and is connected with and washs first connecting pipe mouth, washs first connecting pipe mouth one end fixedly connected with metal gooseneck, metal gooseneck one end fixedly connected with washs the shower nozzle, washs shower nozzle one end through connection and washs the orifice, washs first connecting seat one end fixedly connected with connecting screw tube, washs the inside connection internal thread of having seted up of first connecting pipe mouth. According to the utility model, the ore to be cleaned is arranged on the conveyor belt after being assembled by the screen frame, the screen frame specification is selected to be matched with the interval between the two groups of limiting stop bars, so that a good limiting effect can be achieved when the ore to be cleaned is arranged on the screen frame specification, and the injection angle of the cleaning nozzle can be conveniently adjusted in a rotating manner through the arranged metal gooseneck, so that the angle-adaptive flushing can be performed.
Description
Technical Field
The utility model relates to the technical field of cleaning equipment, in particular to nonmetal ore processing cleaning equipment.
Background
Ores are mineral aggregates from which useful components can be extracted or which themselves have some property that can be exploited, and can be classified as metallic ores and nonmetallic ores; nonmetallic ores are regarded as the name meaning that the nonmetallic ores are not metal-type ores, and the main varieties include diamond, graphite, natural sulfur, pyrite, crystal, corundum, salt ores, potassium salts, magnesium salts, iodine, bromine, arsenic, boron ores and the like;
nonmetallic ores are required to be transported to a factory to be processed again to be made into various raw materials for use after various treatments such as crushing and the like are required to be carried out after the nonmetallic ores are mined, wherein the small ores are required to be cleaned to remove impurities such as surface dust and the like after the crushing, but the conventional nonmetallic ore processing cleaning equipment cannot clean the ores well when in use, the flushing angle cannot be flexibly adjusted when the equipment is flushed firstly, or the equipment such as a spray head cannot be replaced and detached quickly and conveniently when the spray head is blocked during flushing.
Disclosure of Invention
The utility model aims at: in order to solve the problems that the existing nonmetallic ore processing cleaning equipment can not clean ores well when in use, can not flexibly adjust the flushing angle when in flushing at first, or can not be quickly and conveniently replaced and disassembled equipment such as a nozzle when the nozzle is blocked during flushing, the nonmetallic ore processing cleaning equipment is provided.
In order to achieve the above purpose, the present utility model provides the following technical solutions: a nonmetallic ore processing cleaning apparatus comprising: the cleaning device cabinet, cleaning device cabinet one end fixedly connected with washs the side cabinet, washs side cabinet top one end fixedly connected with and washs first connecting seat, it has the first connecting tube mouth to wash first connecting seat one end spiro union, it has metal gooseneck to wash first connecting tube mouth one end fixedly connected with, metal gooseneck one end fixedly connected with washs the shower nozzle, it has the washing orifice to wash shower nozzle one end through connection, it connects the screwed pipe to wash first connecting seat one end fixedly connected with, the connection internal thread has been seted up to wash first connecting tube mouth inside, wash side cabinet below one end is provided with the feed liquor mouth of pipe, feed liquor mouth of pipe one end is provided with the feed liquor screwed pipe.
As still further aspects of the utility model: the cleaning device is characterized in that a conveying mechanism is arranged at one end inside the cabinet of the cleaning device, a conveying belt is arranged inside the conveying mechanism, one end of the conveying belt is fixedly connected with a limiting stop bar, the inside of the conveying belt is in transmission connection with a rotating roller, and one end of the rotating roller is fixedly connected with a rotating shaft.
As still further aspects of the utility model: the cleaning side cabinet, the liquid inlet pipe orifice and the liquid inlet threaded pipe are symmetrically arranged at two ends of the cleaning device cabinet.
As still further aspects of the utility model: the cleaning head connecting seat, the cleaning head connecting pipe orifice, the metal gooseneck and the cleaning spray heads are six in number, and each three groups of the cleaning head connecting seat, the cleaning head connecting pipe orifice, the metal gooseneck and the cleaning spray heads are matched with one group of the cleaning side cabinet.
As still further aspects of the utility model: the cleaning head connecting seat is matched with the cleaning head connecting pipe orifice through the connecting threaded pipe and the connecting internal threads.
As still further aspects of the utility model: the cleaning side cabinet, the cleaning head connecting seat, the cleaning head connecting pipe orifice, the metal gooseneck, the cleaning spray head, the liquid inlet pipe orifice and the liquid inlet threaded pipe are connected in a penetrating manner.
As still further aspects of the utility model: the number of the limiting bars is provided with a plurality of groups which are uniformly positioned on the outer side surface of the conveyor belt and fixedly connected with the outer side surface of the conveyor belt, the number of the rotating rollers is two groups, the number of the rotating shafts is four groups, each two groups of the rotating shafts are matched with one group of the rotating rollers, and a transmission motor is integrally arranged inside a cabinet of the cleaning device and is in transmission connection with the rotating shafts.
Compared with the prior art, the utility model has the beneficial effects that:
1. according to the utility model, the ore to be cleaned is arranged on the conveyor belt after being assembled by the screen frame, the screen frame specification is selected to be matched with the interval between the two groups of limit stop bars, so that a good limit effect can be achieved when the ore to be cleaned is arranged on the screen frame specification, and the injection angle of the cleaning nozzle can be conveniently adjusted in a rotating way through the arranged metal gooseneck, so that the angle-adaptive flushing can be performed;
2. according to the utility model, the cleaning head connecting pipe orifice, the metal gooseneck pipe and the cleaning nozzle can be conveniently detached and replaced through the cleaning head connecting seat and the cleaning head connecting pipe orifice which are connected through the connecting threaded pipe and the connecting internal threads in a threaded manner.
Drawings
FIG. 1 is a schematic view of the overall structure of a nonmetallic ore processing cleaning apparatus of the present utility model;
FIG. 2 is a schematic view of the structure of a cleaning mechanism in a nonmetallic ore processing cleaning apparatus of the present utility model;
FIG. 3 is a schematic view of the structure at A of a nonmetallic ore processing and cleaning apparatus in accordance with the present utility model;
FIG. 4 is a schematic bottom view of a nonmetallic ore processing cleaning apparatus in accordance with the present utility model;
fig. 5 is a schematic view of the structure of a conveying mechanism in a nonmetallic ore processing and cleaning apparatus according to the present utility model.
In the figure: 1. cleaning a device cabinet; 2. cleaning the side cabinet; 3. a cleaning head connecting seat; 4. the cleaning head is connected with the pipe orifice; 5. a metal gooseneck; 6. cleaning the spray head; 7. cleaning the spray holes; 8. connecting a threaded pipe; 9. connecting internal threads; 10. a liquid inlet pipe orifice; 11. a liquid inlet threaded pipe; 12. a conveying mechanism; 13. a conveyor belt; 14. a limit stop bar; 15. a rotating roller; 16. and (3) rotating the shaft.
Detailed Description
The following description of the embodiments of the present utility model will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present utility model, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the utility model without making any inventive effort, are intended to be within the scope of the utility model.
In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "configured" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art. Hereinafter, an embodiment of the present utility model will be described in accordance with its entire structure.
Referring to fig. 1 to 4, in an embodiment of the present utility model, a nonmetallic ore processing cleaning apparatus includes: the cleaning device cabinet 1, cleaning device cabinet 1 one end fixedly connected with washs side cabinet 2, washs side cabinet 2 top one end fixedly connected with and washs first connecting seat 3, washs first connecting seat 3 one end spiro union and is connected with washs first connecting pipe mouth 4, washs first connecting pipe mouth 4 one end fixedly connected with metal gooseneck 5, metal gooseneck 5 one end fixedly connected with washs shower nozzle 6, washs shower nozzle 6 one end through connection has washs orifice 7, washs first connecting seat 3 one end fixedly connected with connecting screwed pipe 8, washs first connecting pipe mouth 4 inside and has seted up connection internal thread 9, washs side cabinet 2 below one end and is provided with feed liquor mouth 10, feed liquor mouth 10 one end is provided with feed liquor screwed pipe 11.
Referring to fig. 1 and 5, a conveying mechanism 12 is disposed at one end inside a cabinet 1 of the cleaning device, a conveying belt 13 is disposed inside the conveying mechanism 12, a limit stop bar 14 is fixedly connected to one end of the conveying belt 13, a rotating roller 15 is connected to the inner portion of the conveying belt 13 in a transmission manner, and a rotating shaft 16 is fixedly connected to one end of the rotating roller 15.
Referring to fig. 4, the number of the cleaning side cabinets 2, the liquid inlet pipe orifices 10 and the liquid inlet threaded pipes 11 is two, and the two groups of the cleaning side cabinets 2, the liquid inlet pipe orifices 10 and the liquid inlet threaded pipes 11 are symmetrically arranged at two ends of the cleaning device cabinet 1.
Referring to fig. 1 and 2, six groups of cleaning head connecting seats 3, cleaning head connecting pipe orifices 4, metal gooseneck pipes 5 and cleaning spray heads 6 are arranged, and each three groups of cleaning head connecting seats 3, cleaning head connecting pipe orifices 4, metal gooseneck pipes 5 and cleaning spray heads 6 are matched with one group of cleaning side cabinets 2.
Referring to fig. 1 to 3, the connection threaded pipe 8 and the connection internal thread 9 are matched, and the cleaning head connecting seat 3 and the cleaning head connecting pipe orifice 4 are in threaded connection through the connection threaded pipe 8 and the connection internal thread 9.
Referring to fig. 1 to 4, the cleaning side cabinet 2, the cleaning head connecting seat 3, the cleaning head connecting pipe orifice 4, the metal gooseneck 5, the cleaning nozzle 6, the liquid inlet pipe orifice 10 and the liquid inlet threaded pipe 11 are in through connection.
Referring to fig. 1 and 5, the number of the limiting bars 14 is provided with a plurality of groups of fixed on the outer side surface of the conveyor belt 13, the number of the rotating rollers 15 is provided with two groups, the number of the rotating shafts 16 is provided with four groups, each two groups of rotating shafts 16 are matched with one group of rotating rollers 15, and a transmission motor is integrally arranged in the cleaning device cabinet 1 and is in transmission connection with the rotating shafts 16.
The working principle of the utility model is as follows: when the cleaning device is used, ores to be cleaned are placed on the conveyor belt 13 after being assembled by a screen frame, the screen frame specification is matched with the spacing between two groups of spacing shelves 14, so that a good spacing effect can be achieved when the cleaning device is placed on the screen frame specification, then the cleaning device is connected with a water inlet pipeline through a liquid inlet threaded pipe 11 in a threaded manner on a liquid inlet pipe orifice 10, the cleaning head connecting pipe orifice 4 is fixedly connected with the cleaning head connecting pipe orifice 3 in a threaded manner through a threaded manner between a connecting threaded pipe 8 and a connecting internal thread 9, at the moment, cleaning water is pumped into a cleaning side cabinet 2 through the liquid inlet pipe orifice 10 and then pumped into a plurality of groups of cleaning head connecting pipes 3 respectively through the cleaning head connecting pipes 3, finally the cleaning holes 7 at one end of a cleaning nozzle 6 are sprayed out of the screen frame on the conveyor belt 13 downwards to flush ores in the cleaning side cabinet 5, the cleaning nozzle 6 can be conveniently rotated and adjusted through the metal gooseneck 5, and the cleaning head connecting pipes 4, the metal gooseneck 5 and the cleaning head connecting pipe orifice 6 can be conveniently detached and replaced through the cleaning head connecting pipes 3 and the cleaning head connecting pipe orifice 4 in the threaded manner of the connecting internal threads 9.
The foregoing description is only a preferred embodiment of the present utility model, but the scope of the present utility model is not limited thereto, and any person skilled in the art, who is within the scope of the present utility model, should make equivalent substitutions or modifications according to the technical solution of the present utility model and the inventive concept thereof, and should be covered by the scope of the present utility model.
Claims (7)
1. A nonmetallic ore processing cleaning apparatus comprising: the cleaning device cabinet (1) is characterized in that one end of the cleaning device cabinet (1) is fixedly connected with a cleaning side cabinet (2), one end of the cleaning side cabinet (2) is fixedly connected with a cleaning head connecting seat (3), one end of the cleaning head connecting seat (3) is connected with a cleaning head connecting pipe orifice (4) in a screwed mode, one end of the cleaning head connecting pipe orifice (4) is fixedly connected with a metal gooseneck (5), one end of the metal gooseneck (5) is fixedly connected with a cleaning spray head (6), one end of the cleaning spray head (6) is connected with a cleaning spray orifice (7) in a penetrating mode, one end of the cleaning head connecting seat (3) is fixedly connected with a connecting threaded pipe (8), connecting internal threads (9) are formed in the cleaning head connecting pipe orifice (4), one end below the cleaning side cabinet (2) is provided with a liquid inlet pipe orifice (10), and one end of the liquid inlet pipe orifice (10) is provided with a liquid inlet threaded pipe (11).
2. The nonmetallic ore processing and cleaning equipment according to claim 1, wherein a conveying mechanism (12) is arranged at one end inside the cleaning device cabinet (1), a conveying belt (13) is arranged inside the conveying mechanism (12), one end of the conveying belt (13) is fixedly connected with a limiting stop bar (14), a rotating roller (15) is connected in a transmission mode inside the conveying belt (13), and one end of the rotating roller (15) is fixedly connected with a rotating shaft (16).
3. The nonmetallic ore processing and cleaning device according to claim 1, wherein the number of the cleaning side cabinets (2), the number of the liquid inlet pipe orifices (10) and the number of the liquid inlet threaded pipes (11) are two, and the two cleaning side cabinets (2), the number of the liquid inlet pipe orifices (10) and the number of the liquid inlet threaded pipes (11) are all arranged at two ends of the cleaning device cabinet (1) symmetrically.
4. The nonmetallic ore processing and cleaning equipment according to claim 1, wherein six groups of cleaning head connecting seats (3), cleaning head connecting pipe orifices (4), metal goosenecks (5) and cleaning spray heads (6) are arranged, and each three groups of cleaning head connecting seats (3), cleaning head connecting pipe orifices (4), metal goosenecks (5) and cleaning spray heads (6) are matched with one group of cleaning side cabinets (2).
5. A nonmetallic ore processing and cleaning device according to claim 1, characterized in that the connection threaded pipe (8) and the connection internal thread (9) are matched, and the cleaning head connecting seat (3) and the cleaning head connecting pipe orifice (4) are in threaded connection through the connection threaded pipe (8) and the connection internal thread (9).
6. A nonmetallic ore processing and cleaning apparatus according to claim 1, characterized in that the cleaning side cabinet (2), the cleaning head connecting seat (3), the cleaning head connecting pipe orifice (4), the metal gooseneck (5), the cleaning spray head (6), the liquid inlet pipe orifice (10) and the liquid inlet threaded pipe (11) are connected in a through manner.
7. The nonmetallic ore processing and cleaning device according to claim 2, wherein a plurality of groups of limiting stop bars (14) are uniformly arranged on the outer side surface of the conveyor belt (13) and fixedly connected, two groups of rotating rollers (15) are arranged on the rotating shafts (16), four groups of rotating shafts (16) are arranged on the rotating shafts (16), each two groups of rotating shafts (16) are matched with one group of rotating rollers (15), and a transmission motor is integrally arranged inside the cleaning device cabinet (1) and is in transmission connection with the rotating shafts (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321660942.3U CN220426111U (en) | 2023-06-28 | 2023-06-28 | Nonmetallic ore processing cleaning equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321660942.3U CN220426111U (en) | 2023-06-28 | 2023-06-28 | Nonmetallic ore processing cleaning equipment |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220426111U true CN220426111U (en) | 2024-02-02 |
Family
ID=89688565
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321660942.3U Active CN220426111U (en) | 2023-06-28 | 2023-06-28 | Nonmetallic ore processing cleaning equipment |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220426111U (en) |
-
2023
- 2023-06-28 CN CN202321660942.3U patent/CN220426111U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111569723A (en) | Quinoa white spirit is made and is used compounding device | |
| CN220426111U (en) | Nonmetallic ore processing cleaning equipment | |
| CN111701937A (en) | Continuous processing device for surface treatment and cutting forming of refined monocrystalline silicon | |
| CN213386103U (en) | Conveying device for processing carbon fiber composite material | |
| CN216171895U (en) | Vertical stirred tank for food engineering | |
| CN215713292U (en) | A jetting device for on hot dip galvanizing steel pipe production line | |
| CN211248525U (en) | Cutting device is used in processing of ship rack | |
| CN111775357A (en) | Refined monocrystalline silicon processing technology | |
| CN208098772U (en) | A kind of cleaning device of parts washer | |
| CN213163495U (en) | Malleable iron pipe fitting is with getting material mantle fiber equipment | |
| CN112403962A (en) | Circulating cleaning equipment for liquid crystal panel production | |
| CN220970089U (en) | Ore cleaning device | |
| CN221853242U (en) | Belt cleaning mechanism of concrete mixing plant | |
| CN219902771U (en) | Glass plate hole rotating device | |
| CN218681655U (en) | Beef ball surface spraying defoaming machine | |
| CN211488759U (en) | Bearing spraying and flushing device | |
| CN221734215U (en) | Tool for cleaning anode | |
| CN212597440U (en) | Compression molding machine continuous extrusion device for processing carbon fiber plate | |
| CN213762496U (en) | Municipal administration public works construction is with construction warning sign spraying equipment | |
| CN213159666U (en) | Papermaking tailings fiber recovery device | |
| CN221157840U (en) | Line side spray pipe inspection and roller cleaning device of circuit board production line | |
| CN218284706U (en) | Feeder is used in fastener processing | |
| CN213079300U (en) | Drip washing device for treating oily sludge | |
| CN112974360A (en) | High-efficient belt cleaning device is used to machine part | |
| CN220942112U (en) | Desliming device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |