CN110005556B - Oil inlet structure of two-stroke gasoline engine - Google Patents
Oil inlet structure of two-stroke gasoline engine Download PDFInfo
- Publication number
- CN110005556B CN110005556B CN201910364655.XA CN201910364655A CN110005556B CN 110005556 B CN110005556 B CN 110005556B CN 201910364655 A CN201910364655 A CN 201910364655A CN 110005556 B CN110005556 B CN 110005556B
- Authority
- CN
- China
- Prior art keywords
- oil inlet
- inlet pipe
- pressure relief
- relief valve
- fuel tank
- 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
- 239000003502 gasoline Substances 0.000 title claims abstract description 36
- 239000002828 fuel tank Substances 0.000 claims abstract description 36
- 239000000446 fuel Substances 0.000 claims abstract description 13
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 230000002093 peripheral effect Effects 0.000 claims abstract description 3
- 229920000459 Nitrile rubber Polymers 0.000 claims description 4
- 239000003921 oil Substances 0.000 description 71
- 239000000295 fuel oil Substances 0.000 description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000001125 extrusion Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
- F02M37/20—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines characterised by means for preventing vapour lock
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)
- Lubrication Of Internal Combustion Engines (AREA)
Abstract
The invention provides an oil inlet structure of a two-stroke gasoline engine, and belongs to the technical field of gasoline engines. The technical problems that the gasoline engine is difficult to start normally under the high temperature state after shutdown and the like are solved. The oil inlet structure of the two-stroke gasoline engine comprises a carburetor, a fuel tank and an oil inlet pipe, wherein one end of the oil inlet pipe is in sealing connection with the carburetor, the other end of the oil inlet pipe is inserted into the fuel tank and extends to the bottom of the fuel tank, the oil inlet end of the oil inlet pipe is connected with a fuel filter, one side of the outer peripheral surface of the oil inlet pipe is provided with a transverse branch interface which is communicated with the oil inlet pipe, the branch interface is positioned in the fuel tank and is close to the top of the fuel tank, a pressure relief valve is arranged on the branch interface, and the pressure relief valve is a one-way valve which can only enable air in the oil inlet pipe to enter the fuel tank in a one-way manner. The gasoline engine of the invention can discharge air resistance formed by high-temperature and high-pressure air in the carburetor and the oil inlet pipe after the engine is stopped into an environment where the fuel tank is communicated with the atmosphere through the pressure relief valve, thereby improving the probability of normal starting of the gasoline engine after the engine is stopped.
Description
Technical Field
The invention belongs to the technical field of gasoline engines, and relates to an oil inlet structure of a two-stroke gasoline engine.
Background
The upper end of the oil inlet pipe of the carburetor of the prior two-stroke gasoline engine is communicated with a copper pipe of the carburetor, the lower end of the oil inlet pipe is inserted with a fuel filter, the oil inlet pipe is soaked in an oil tank, the middle part of the oil inlet pipe is clamped on a shell of the oil tank, when the gasoline engine works, the carburetor receives high-frequency negative pressure pulse of a crankcase, the pulse can vacuumize the inside of the carburetor and the oil inlet pipe connected with the carburetor, so that fuel is forced to flow upwards into the carburetor, and then the carburetor sprays oil mist to participate in combustion work of the gasoline engine together with the incoming air; the temperature is very high after the gasoline engine is shut down, and the gasoline engine is difficult to restart because high-temperature components such as a cylinder can carry out heat radiation to the carburetor and the oil inlet pipe, high-temperature and high-pressure air resistance can be formed in the oil inlet pipe, so that the oil inlet pipe cannot be used for oil inlet, the gasoline engine can be started normally only after the temperature of the carburetor and the oil inlet pipe is reduced, the air resistance in the oil inlet pipe under high temperature can cause the gasoline engine to be difficult to start, and great inconvenience is caused to production and life of people.
Disclosure of Invention
The invention aims at the problems existing in the prior art, and provides an oil inlet structure of a two-stroke gasoline engine, which aims at solving the technical problems that: how to improve the normal start probability of the gasoline engine in a high-temperature environment after the shutdown.
The aim of the invention can be achieved by the following technical scheme:
the oil inlet structure of the two-stroke gasoline engine comprises a carburetor, a fuel tank and a hollow oil inlet pipe, wherein one end of the oil inlet pipe is in sealing connection with the carburetor, the other end of the oil inlet pipe is inserted into the fuel tank and extends to the bottom of the fuel tank, and the oil inlet end part of the oil inlet pipe is also provided with a fuel filter connected with an oil inlet of the oil inlet pipe; the fuel tank is characterized in that a transverse branch joint is arranged on one side of the outer peripheral surface of the fuel inlet pipe and is communicated with the fuel inlet pipe, the branch joint is positioned in the fuel tank and is close to the top of the fuel tank, a pressure release valve is arranged on the branch joint, and the pressure release valve is a one-way valve which can only enable air in the fuel inlet pipe to enter the fuel tank in a one-way manner.
The working principle is as follows: according to the technical scheme, one end of the oil inlet pipe is connected with the carburetor in a sealing way, the other end of the oil inlet pipe stretches into fuel oil of the fuel tank and is connected with the fuel oil filter, so that a closed environment is formed in the oil inlet pipe, the carburetor and the oil inlet pipe are easy to form air resistance at high temperature after the engine is stopped, a pressure relief valve is arranged above the fuel oil in the fuel tank and close to the upper part of the fuel tank, the pressure relief valve is a one-way valve, high-temperature high-pressure hot air in the oil inlet pipe can be discharged into the environment communicated with the atmosphere in the fuel tank through the pressure relief valve, so that the air pressure inside and outside the oil inlet pipe is balanced, the air resistance in the oil inlet pipe and the carburetor is eliminated, and at the moment, a small hole of the filter element closed in the fuel oil filter can be opened due to the air resistance, so that the fuel oil enters the oil inlet pipe, the starting of the gasoline engine is easy to be much, and the normal starting probability of the gasoline engine at high temperature is improved; under the normal working condition of the oil engine, the inside of the oil inlet pipe is firstly vacuumized, at the moment, the inside of the pressure relief valve is vacuumized, and one end of the pressure relief valve, which is exhausted to the fuel tank, is flattened by the outside atmospheric pressure to be completely closed.
In the oil inlet structure of the two-stroke gasoline engine, the branch interface is provided with the mounting hole, one end of the pressure relief valve is positioned in the branch interface, and the other end of the pressure relief valve extends out of the branch interface and is positioned in the fuel tank. The installation hole is arranged in the branch interface, so that the pressure relief valve is convenient to install, one end of the pressure relief valve is communicated with the oil inlet pipe in the branch interface, and the other end of the pressure relief valve is positioned in the environment communicated with the atmosphere in the fuel tank, so that the air resistance is convenient to exhaust and eliminate.
In the oil inlet structure of the two-stroke gasoline engine, the branch interface is internally provided with the vent hole extending to the inner wall of the oil inlet pipe, and the pressure relief valve is provided with the pressure relief hole in butt joint with the vent hole along the central axis of the pressure relief valve. The branch interface is internally provided with a vent hole and a pressure relief hole which are internally opened by a pressure relief valve, so as to discharge high-temperature and high-pressure gas in the oil inlet pipe.
In the oil inlet structure of the two-stroke gasoline engine, the end part of the inner end of the pressure relief valve is in a spherical shape and is abutted against the end part of the vent hole, the port of the pressure relief hole positioned at the inner end of the pressure relief valve is an opening, the aperture of the pressure relief hole is gradually reduced from the end part of the branch interface to the outer end of the pressure relief valve, and the port of the pressure relief hole positioned at the outer end of the pressure relief valve is a necking. The tip of the inner of relief valve is the sphere shape for the mounting hole inner wall of extrusion branch interface for relief valve and branch interface sealing connection, the opening of the one end of relief valve and the end connection of air vent, the design of the other end is the throat and is located the fuel in order to make things convenient for the relief valve to exhaust, and make the gasoline engine during normal work, the relief valve can not leak gas.
In the oil inlet structure of the two-stroke gasoline engine, the aperture of the upper opening of the pressure relief valve is smaller than the aperture of the vent hole. And the speed of hot air discharge in the oil inlet pipe is increased conveniently.
In the oil inlet structure of the two-stroke gasoline engine, the oil inlet pipe and the pressure relief valve are both made of oil-resistant nitrile rubber. After the pressure release valve and the branch joint on the oil inlet pipe are reversely buckled and pressed, the tightness of the pressure release valve and the branch joint on the oil inlet pipe is ensured
Compared with the prior art, the invention has the following advantages:
1. according to the invention, the branch connector is arranged on the oil inlet pipe, the pressure release valve which is a one-way valve is arranged in the branch connector in a sealing way, and high-temperature and high-pressure hot air in the oil inlet pipe can be discharged through the pressure release valve, so that the probability of successful starting of the gasoline engine at high temperature after shutdown is improved.
2. The pressure release valve is arranged at one end in the branch joint and is in a sphere shape, and the oil inlet pipe and the pressure release valve are both made of oil-resistant nitrile rubber, so that the tightness between the pressure release valve and the branch joint can be ensured.
3. According to the invention, the aperture of the opening at one end of the pressure release valve is smaller than the aperture of the vent hole of the branch connector, and the other end of the pressure release valve is a necking, so that the flow speed of hot air in the air inlet pipe to the pressure release valve is increased, and the hot air can be conveniently and rapidly discharged.
Drawings
Fig. 1 is a schematic structural view of an oil inlet structure of the two-stroke gasoline engine, and a schematic partial enlarged structural view of a pressure relief valve in the oil inlet structure in a high-temperature state after shutdown.
In the figure, 1, a carburetor; 2. a fuel tank; 3. an oil inlet pipe; 4. filtering fuel oil; 5. a branch interface; 51. a mounting hole; 52. a vent hole; 6. a pressure release valve; 61. a pressure relief hole; 61a, openings; 61b, necking.
Detailed Description
The following are specific embodiments of the present invention and the technical solutions of the present invention will be further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.
As shown in fig. 1, the oil inlet structure of the two-stroke gasoline engine in this embodiment includes a carburetor 1, a fuel tank 2 and a hollow oil inlet pipe 3, one end of the oil inlet pipe 3 is inserted into the carburetor 1, the other end is inserted into the fuel tank 2 and fixedly connected with a fuel filter 4, a transverse branch joint 5 is arranged at a position of the oil inlet pipe 3 near the upper end of the inner wall of the fuel tank 2, a mounting hole 51 and a vent hole 52 communicated with the inner wall of the oil inlet pipe 3 are arranged in the branch joint 5, a pressure relief valve 6 is inserted into the mounting hole 51, the pressure relief valve 6 is provided with a pressure relief hole 61 along the central axis thereof, the pressure relief hole 61 is butted with the vent hole 52 in the branch joint 5, one end of the pressure relief valve is positioned in the mounting hole 51 on the branch joint 5 and the other end is positioned in the fuel tank 2 outside the branch joint 5, and the pressure relief valve 6 is a one-way valve which can only discharge hot air in the oil inlet pipe 3 into the fuel tank 2, thus the pressure inside and outside the oil inlet pipe 3 can be balanced, and the probability of successful starting of the gasoline engine in a high-temperature state after shutdown is improved.
The oil inlet pipe 3 and the pressure relief valve 6 are both made of oil-resistant nitrile rubber, one end part of the pressure relief valve 6 is in a sphere shape, the port of the pressure relief hole 61 at one end of the pressure relief valve 6 is an opening 61a, the aperture of the opening 61a of the pressure relief valve 6 is smaller than that of the vent hole 52 of the branch joint 5, the aperture of the pressure relief hole 61 is gradually reduced from the end part of the branch joint 5 to the other end of the pressure relief valve 6, the port of the pressure relief hole 61 at the other end of the pressure relief valve 6 is a shrinkage 61b, the pressure relief valve 6 and the oil inlet pipe 3 are made of the same materials and are elastic, the two are conveniently connected in a sealing mode, a part of the pressure relief valve 6 in the mounting hole 51 on the branch joint 5 is in a sphere shape, guarantee is provided for sealing connection of the pressure relief valve 6 and the oil inlet pipe 3, when the air pressure in the oil inlet pipe 3 rises and is higher than the atmospheric pressure in the fuel tank 2, the high-pressure inside the oil inlet pipe 3 can be flushed out of the pressure relief valve 6, the high-pressure air is discharged, and after the air pressure inside the oil inlet pipe 3 and the air pressure is balanced. When the gasoline engine starts to run, the oil inlet pipe 3 can form vacuum, and when the inside of the oil inlet pipe 3 is negative pressure, the pressure relief valve 6 can be closed more tightly due to the negative pressure.
The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions thereof without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.
Claims (3)
1. The oil inlet structure of the two-stroke gasoline engine comprises a carburetor (1), a fuel tank (2) and a hollow oil inlet pipe (3), wherein one end of the oil inlet pipe (3) is in sealing connection with the carburetor (1), the other end of the oil inlet pipe is inserted into the fuel tank (2) and extends to the bottom of the fuel tank (2), and the oil inlet end of the oil inlet pipe (3) is also provided with a fuel filter (4) connected with an oil inlet of the oil inlet pipe (3); the fuel tank is characterized in that a lateral branch interface (5) is arranged on one side of the outer peripheral surface of the fuel inlet pipe (3), the branch interface (5) is communicated with the fuel inlet pipe (3), the branch interface (5) is positioned in the fuel tank (2) and is close to the top of the fuel tank (2), a pressure relief valve (6) is arranged on the branch interface (5), and the pressure relief valve (6) is a one-way valve which can only enable air in the fuel inlet pipe (3) to enter the fuel tank (2) in a one-way manner;
a vent hole (52) extending to the inner wall of the oil inlet pipe (3) is formed in the branch interface (5), and a pressure relief hole (61) butted with the vent hole (52) is formed in the pressure relief valve (6) along the central axis of the pressure relief valve;
the end part of the inner end of the pressure relief valve (6) is in a sphere shape and is abutted against the end part of the vent hole (52), the port of the pressure relief hole (61) positioned at the inner end of the pressure relief valve (6) is an opening (61 a), the aperture of the pressure relief hole (61) is gradually reduced from the end part of the branch joint (5) to the outer end of the pressure relief valve (6), and the port of the pressure relief hole (61) positioned at the outer end of the pressure relief valve (6) is a necking (61 b);
the oil inlet pipe (3) and the pressure release valve (6) are both made of oil-resistant nitrile rubber.
2. The oil inlet structure of the two-stroke gasoline engine according to claim 1, wherein the branch connector (5) is provided with a mounting hole (51), one end of the pressure relief valve (6) is positioned in the branch connector (5), and the other end of the pressure relief valve extends out of the branch connector (5) and is positioned in the fuel tank (2).
3. The oil inlet structure of the two-stroke gasoline engine as recited in claim 2, wherein the aperture of the upper opening (61 a) of the relief valve (6) is smaller than the aperture of the vent hole (52).
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910364655.XA CN110005556B (en) | 2019-04-30 | 2019-04-30 | Oil inlet structure of two-stroke gasoline engine |
| PCT/CN2020/070022 WO2020220728A1 (en) | 2019-04-30 | 2020-01-02 | Fuel inlet structure of two-stroke gasoline engine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910364655.XA CN110005556B (en) | 2019-04-30 | 2019-04-30 | Oil inlet structure of two-stroke gasoline engine |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110005556A CN110005556A (en) | 2019-07-12 |
| CN110005556B true CN110005556B (en) | 2024-04-09 |
Family
ID=67175464
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910364655.XA Active CN110005556B (en) | 2019-04-30 | 2019-04-30 | Oil inlet structure of two-stroke gasoline engine |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110005556B (en) |
| WO (1) | WO2020220728A1 (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110005556B (en) * | 2019-04-30 | 2024-04-09 | 浙江中马园林机器股份有限公司 | Oil inlet structure of two-stroke gasoline engine |
| CN114517741A (en) * | 2020-11-20 | 2022-05-20 | 上海汽车集团股份有限公司 | Engine control method and device and engine control system |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001018667A (en) * | 1999-07-07 | 2001-01-23 | Aisan Ind Co Ltd | Fuel tank module |
| CN201155392Y (en) * | 2008-02-21 | 2008-11-26 | 成都汇普电器有限责任公司 | Oil fuel pump assembly without oil return pipe |
| CN101332769A (en) * | 2008-07-24 | 2008-12-31 | 江苏大学 | Vehicle-mounted fuel vapor recovery device and method |
| CN104842579A (en) * | 2015-05-12 | 2015-08-19 | 天津太平洋超高压设备有限公司 | Isostatic-pressing die pressing hydraulic machine for powder slab blank |
| CN207315516U (en) * | 2017-09-19 | 2018-05-04 | 福州大学 | Turbocharger lubrication device |
| CN209800141U (en) * | 2019-04-30 | 2019-12-17 | 浙江中马园林机器股份有限公司 | Oil inlet structure of two-stroke gasoline engine |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE10239777A1 (en) * | 2002-08-29 | 2004-03-18 | Robert Bosch Gmbh | Device for venting a conveyor unit |
| JP2006257980A (en) * | 2005-03-17 | 2006-09-28 | Keihin Corp | Inline type fuel supply device in fuel injection device |
| CN206129464U (en) * | 2016-10-26 | 2017-04-26 | 众恒汽车部件有限公司 | External assembly exhaust apparatus of T type quick start motorcycle |
| CN207963977U (en) * | 2018-01-13 | 2018-10-12 | 重庆网锐科技发展有限公司 | Engineering machinery fuel consumption meter exhaust structure |
| CN110005556B (en) * | 2019-04-30 | 2024-04-09 | 浙江中马园林机器股份有限公司 | Oil inlet structure of two-stroke gasoline engine |
-
2019
- 2019-04-30 CN CN201910364655.XA patent/CN110005556B/en active Active
-
2020
- 2020-01-02 WO PCT/CN2020/070022 patent/WO2020220728A1/en active Application Filing
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001018667A (en) * | 1999-07-07 | 2001-01-23 | Aisan Ind Co Ltd | Fuel tank module |
| CN201155392Y (en) * | 2008-02-21 | 2008-11-26 | 成都汇普电器有限责任公司 | Oil fuel pump assembly without oil return pipe |
| CN101332769A (en) * | 2008-07-24 | 2008-12-31 | 江苏大学 | Vehicle-mounted fuel vapor recovery device and method |
| CN104842579A (en) * | 2015-05-12 | 2015-08-19 | 天津太平洋超高压设备有限公司 | Isostatic-pressing die pressing hydraulic machine for powder slab blank |
| CN207315516U (en) * | 2017-09-19 | 2018-05-04 | 福州大学 | Turbocharger lubrication device |
| CN209800141U (en) * | 2019-04-30 | 2019-12-17 | 浙江中马园林机器股份有限公司 | Oil inlet structure of two-stroke gasoline engine |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2020220728A1 (en) | 2020-11-05 |
| CN110005556A (en) | 2019-07-12 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110005556B (en) | Oil inlet structure of two-stroke gasoline engine | |
| CN209800141U (en) | Oil inlet structure of two-stroke gasoline engine | |
| JPH07324661A (en) | Fuel injection method and fuel injection nozzle for direct injection type diesel engine | |
| CN2893194Y (en) | Diesel engine fuel injection device | |
| CN110439673A (en) | A kind of pressurization air filter of four cylinder four-stroke generator | |
| CN215566155U (en) | Internal mixing structure valve device | |
| CN206458547U (en) | A kind of marine diesel oil LNG dual fuel engine feeders | |
| CN214660487U (en) | Automatic water discharging device of intercooler | |
| CN109163129B (en) | Cover plate structure of shell | |
| CN207131509U (en) | A kind of cylinder gasoline engine inlet manifold of turbocharging in-cylinder direct-jet three | |
| CN105927337A (en) | Internal combustion engine exhaust gas filtering device | |
| CN213478547U (en) | Diesel oil fuel pump assembly with low oil return pressure and cold start structure | |
| CN110714837A (en) | Turbojet engine lubricating oil system | |
| CN208331743U (en) | A kind of leakage-resistant lubricant-pump easy to process | |
| CN205578683U (en) | Exhaust structure of leading derailleur of car | |
| CN220151462U (en) | Air-exhaust-free oil injection pump for small air-cooled diesel engine | |
| CN214887432U (en) | Screw component of oil return valve of diesel low-pressure cavity of injection pump | |
| CN217873064U (en) | Structure capable of eliminating oil enrichment of combustion chamber of two-stroke gasoline saw cylinder | |
| CN219605435U (en) | Side air inlet pipe of air-cooled cylinder head of motorcycle | |
| CN218177317U (en) | Connecting structure for oil return rubber pipe of supercharger | |
| CN110374757A (en) | A kind of connection structure of valve mechanism cover and breather adapter | |
| CN209781088U (en) | Can guarantee air intake manifold structure of leakproofness | |
| CN219927457U (en) | Petrol engine oil tank structure | |
| TWM583485U (en) | Positive pressure and active crankcase ventilation system of reciprocating engine | |
| CN218510916U (en) | Positive pressure protector with combustion chamber |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |