CN103182131A - Throttling valve - Google Patents
Throttling valve Download PDFInfo
- Publication number
- CN103182131A CN103182131A CN2011104558704A CN201110455870A CN103182131A CN 103182131 A CN103182131 A CN 103182131A CN 2011104558704 A CN2011104558704 A CN 2011104558704A CN 201110455870 A CN201110455870 A CN 201110455870A CN 103182131 A CN103182131 A CN 103182131A
- Authority
- CN
- China
- Prior art keywords
- valve body
- valve
- valve rod
- choke
- face
- 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.)
- Granted
Links
Images
Abstract
The invention discloses a throttling valve which comprises a valve body and a valve rod, wherein the valve body comprises a first valve body and a second valve body; the first valve body is provided with an air inlet and an air outlet; an elastic sealing block corresponds to the air inlet and is arranged in the first valve body; the elastic sealing block is provided with a fixed sealing surface; the valve rod is arranged on the second valve body in a threaded transmission manner; a movable sealing surface corresponding to the fixed sealing surface is arranged on the valve rod; a first step surface and a first limiting surface are respectively arranged on two threaded sides of the valve rod; a second step surface corresponds to the first step surface and is arranged in the second valve body; an elastic element is arranged between the first step surface and the second step surface; a lock knob for limiting the valve rod is arranged on the second valve body; a second limiting surface corresponding to the first limiting surface is arranged on the inner side of the lock knob; and a lock block for limiting is arranged on the valve rod; a first limiting part is arranged on the inner side of the lock block; and a second limiting part corresponding to the first limiting part is arranged on the outer side of the lock knob. The throttling valve has the advantages that control is easy in the operation state, the air flow control is accurate, and the overall air tightness is good.
Description
Technical field
The present invention relates to the anesthetic machine field, relate in particular to a kind of effusion meter choke valve.
Background technology
Anesthetic machine is operating room safety, stability, the exigent equipment of ease for operation, it sends into anesthetics by mechanical circuit patient's alveolar, form the anesthetics partial pressure, after permeating into blood, inhibitory action is directly taken place in the central nervous system, thereby produce the effect of general anesthesia, anesthetic machine mainly comprises air supply system, volatilization jar, respirator and four parts of circuit system.If in operation process to oxygen, laughing gas flow-control accurately, can cause very big risk to operation, even the life security that jeopardizes patient, so the effusion meter choke valve that need select for use has higher security reliability, thereby the flow of oxygen, laughing gas is accurately controlled.
Existing effusion meter choke valve comprises valve body and valve rod, and the threaded stem transmission is arranged on the valve body, have gas access and gas outlet on the valve body, also has the movable sealing face on the valve rod, corresponding with the movable sealing face on the described valve body have a stationary seal face, by screwing valve rod, so that movable sealing face and stationary seal face extruding, realize closing of choke valve, block between gas access and the gas outlet, oppositely screw valve rod, so that movable sealing face and stationary seal face break away from, realize the unlatching of choke valve, the gas access communicates with gas outlet.There is following defective in existing choke valve: when 1) choke valve was in closed condition or maximum stream flow state, stem position was spacing not accurate enough; 2) when choke valve is in closed condition, should guarantee that gas flow is zero, and existing choke valve is realized closing function by mutual extrusion between valve body and the valve rod, the long-term extruding of valve body and valve rod causes distortion easily, and distortion can not recover later, and it is not thorough to cause choke valve to be closed; 3) the threaded stem transmission is arranged on the valve body, owing to the influence of screw backlash, causes gas flow control inaccuracy when screwing valve rod; 4) air-tightness is relatively poor between valve body and the valve rod, causes gas leak phenomenon easily.
Summary of the invention
The objective of the invention is to address the above problem, a kind of choke valve is provided, it has, and duty is easy to control, the good advantage of gas flow accurate, the whole air-tightness of control.
The objective of the invention is to be achieved through the following technical solutions:
A kind of choke valve, comprise valve body and valve rod, described valve body comprises first valve body and second valve body, described first valve body has gas access and gas outlet, correspondingly with described gas access in described first valve body, be provided with the elastic packing piece, described sealing block has stationary seal face, and described threaded stem transmission is arranged on second valve body, has the movable sealing face corresponding with described stationary seal face on the described valve rod;
The both sides that are positioned at described threaded stem arrange first step face and first confined planes respectively on described valve rod, corresponding first step face arranges the second step face in described second valve body, and between two step surfaces flexible member is set;
The spacing cage knob of using of valve rod is set on described second valve body, described cage knob inboard has second confined planes corresponding with first confined planes, its spacing lock dog of using also is set on the described valve rod, described lock dog inboard has first limiting section, and the described cage knob outside has second limiting section corresponding with first limiting section.
Further, have in described first valve body for first mounting groove that sealing block and second valve body are installed, described first mounting groove, one end is connected with described gas access, the other end has female thread, described second valve body coupling female thread is provided with external screw thread, so that described first valve body is threaded with second valve body.
Further, the described second valve body outer end has external screw thread, and described cage knob coupling external screw thread is provided with female thread, so that described cage knob is threaded in the outer end of described second valve body.
Further, described flexible member is spring, and described spring housing is provided with pad in the periphery of described valve rod at its two ends, and is installed in respectively on first step face and the second step face.
Further, described lock dog is enclosed within described valve rod periphery, and is positioned at the outside of described cage knob, evenly is provided with on described cage knob, the lock dog for the screwed hole that screws in holding screw.
Further, described sealing block is installed in described second valve body, one end, and screws in the lump in described first mounting groove, so that described sealing block contacts with described first mounting groove bottom.
Further, has the gas passage that communicates with described gas outlet on described second valve body, the both sides that are positioned at described gas passage all arrange sealing ring at described second valve body and the described first valve body joint, between described second valve body and the valve rod two seals circle is set, and lays respectively at the both sides of described second valve body and threaded stem junction.
Further, described second valve body adopts hollow structure, its inner valve rod installing space that forms, described sealing block has center cavity, and communicate with described gas access, described valve rod middle part has external screw thread, described second valve body coupling external screw thread is provided with female thread, described valve rod one end has the valve rod head with described center cavity coupling, and described valve rod head has the movable sealing face, and described movable sealing face is the conical surface, and described stationary seal face is the plane that the sealing block bottom has, described valve rod inserts in described second valve body from outside to inside, and by the screw thread transmission.
Preferably, described valve rod outboard end is provided be used to the knob of screwing valve rod.
Preferably, described sealing block adopts organic plastics or resin material to make.
Beneficial effect of the present invention is: 1) by sealing block is set, at sealing block stationary seal face is set, at valve rod the movable sealing face is set, make the movable sealing face push or the disengaging stationary seal face by stem movement, realize closing or opening of choke valve, simultaneously sealing block adopts the elastomeric material that easily recovers behind the stress deformation to make, and has overcome can produce behind the existing choke valve life-time service close halfway defective;
2) by at second valve body cage knob being set, the cage knob inboard arranges second confined planes, first confined planes is set, on the valve rod when the effusion meter registration reaches the peak flow values that needs, by screwing cage knob, the confined planes of winning is contacted with second confined planes, with holding screw cage knob is being locked, because valve rod do not have outside activity space, making valve rod transmission again, flow value also can't change again, is choke valve maximum stream flow state this moment; By at the peripheral sheathed lock dog of valve rod, the lock dog inboard arranges first limiting section, cage knob arranged outside second limiting section, when the effusion meter registration is zero, with holding screw lock dog is locked, the limiting section of winning is contacted with second limiting section, and be choke valve minimum discharge state this moment, overcome the uppity defective of existing choke valve duty;
3) pass through at the peripheral sheathed spring of valve rod, and place between the first step face of the second step face of second valve body and valve rod, make when choke valve is in normal operating conditions, produce pretightning force between second valve body and the valve rod, both contact the threaded connection place all the time, when having overcome existing choke valve and having screwed valve rod because the influence of screw backlash causes gas flow to control coarse defective;
4) by at second valve body that is positioned at the gas outlet both sides and the first valve body joint sealing ring being set all, and the two seals circle is set between second valve body and valve rod, make that the air-tightness of choke valve integral body is better, it is relatively poor to overcome between the valve body of existing choke valve and the valve rod air-tightness, causes the defective of gas leak phenomenon easily.
The contrast prior art, this choke valve has that duty is easy to control, the good advantage of gas flow accurate, the whole air-tightness of control.
Description of drawings
The present invention is described in further detail with embodiment with reference to the accompanying drawings below.
Fig. 1 is the cross-sectional schematic of choke valve of the present invention;
Fig. 2 is the perspective view of choke valve of the present invention;
Fig. 3 is the perspective view of the lock knob shown in Fig. 1;
Fig. 4 is the cross-sectional schematic of the lock knob shown in Fig. 1;
Fig. 5 is the perspective view of the lock dog shown in Fig. 1;
Fig. 6 is the cross-sectional schematic of the lock dog shown in Fig. 1.
Among the figure:
1, first valve body; 11, gas access; 12, gas outlet;
2, second valve body; 21, second step face; 22, gas passage;
3, valve rod; 31, movable sealing face; 32, first step face; 33, first confined planes;
4, lock knob; 41, second confined planes; 42, second limiting section; 43, screwed hole;
5, lock dog; 51, first limiting section;
6, sealing block; 61, stationary seal face;
7, knob; 71, cross pan head screw; 72, internal tooth pad;
8, sealing ring;
9, holding screw;
10, spring.
The specific embodiment
Shown in Fig. 1～6, in present embodiment, choke valve of the present invention, comprise valve body and valve rod 3, valve body comprises that first valve body 1 and second valve body, 2, the first valve bodies 1 have gas access 11 and gas outlet 12, correspondingly with gas access 11 in first valve body 1, be provided with elastic packing piece 6, sealing block 6 has stationary seal face 61, and valve rod 3 screw thread transmissions are arranged on second valve body 2, has the movable sealing face 31 corresponding with stationary seal face 61 on the valve rod 3;
The both sides that are positioned at threaded stem arrange first step face 32 and first confined planes 33 respectively on valve rod 3, corresponding first step face 33 arranges second step face 21 in second valve body 2, and between two step surfaces flexible member is set;
It is spacing with cage knob 4 that valve rod is set on second valve body 2, cage knob 4 inboards have second confined planes 21 corresponding with first confined planes, its spacing lock dog 5 of using also is set on the valve rod 3, and lock dog 5 inboards have first limiting section 51, and cage knob 4 outsides have second limiting section 42 corresponding with first limiting section.
As shown in Figure 1, provided a specific embodiment of first valve body, first valve body, 1 one sides arrange gas outlet 12, a side perpendicular with the gas outlet side arranges gas access 11, what be connected with gas access 11 offers first mounting groove, and first mounting groove extends to a side relative with the gas access side, first mounting groove bottom communicates with gas access 11, one side communicates with gas outlet, the top arranges female thread, first mounting groove be used for to be installed sealing block 6 and second valve body 2, and second valve body 2 and first valve body 1 are by being threaded.
As shown in Figure 1, provided a specific embodiment of second valve body, second valve body 2 adopts hollow structure, make its inner valve rod installing space that forms, the one end has for the mounting groove that sealing block 6 is installed, and has a gas passage 22 that communicates with gas outlet 12, sealing block 6 has center cavity, and center cavity and gas access 11, gas passage 22 all communicates, the outside that is positioned at gas passage 22 also is provided with groove, be used for sealing ring 8 is installed, the groove correspondence arranges second step face 21, the second valve bodies 2 other ends external screw thread is set in second valve body, 2 inside therewith, be used for being threaded lock knob 4, be positioned at externally threaded inboard and also be provided with female thread, the external screw thread that coupling arranges on this female thread and the valve rod 3 has been formed the screw thread transmission, realizes the feeding of valve rod.
As shown in Figure 1, give a specific embodiment of valve rod, valve rod 3 one ends have the valve rod head that the center cavity with sealing block is complementary, and the valve rod head has the conical surface, this conical surface is movable sealing face 31, movable sealing face 31 correspondences therewith, the plane that sealing block 6 bottoms have is stationary seal face 61, by movable sealing face 31 extruding stationary seal face 61, realize the blocking-up of gas access and gas outlet, and then the realization choke valve cuts out, corresponding second step face 21 arranges first step face 32 at valve rod 3, be the activity space of flexible member between first step face 32 and the second step face 21, flexible member can make the certain pretightning force of maintenance between second valve body and the valve rod, so that in transmission process, both threaded connection places are in the state that joins all the time, between valve rod 3 and second valve body 2 two seals is set, and lays respectively at the both sides of both threaded connection places, the air-tightness between second valve body and the valve rod has been strengthened in dual-seal;
The other end of valve rod 3 stretches into knob 7 inside, knob 7 outer ends have groove, bottom portion of groove is communicated with has screwed hole, tighten together by the cross pan head screw 71 that screws in the screwed hole between valve rod 3 ends and the knob, and cross pan head screw 71 also is with internal tooth pad 72, so that firm and reliable connection between valve rod 3 and the knob 7.
Shown in Fig. 3～4, provided a specific embodiment of lock knob, knob 4 one ends have female thread, be used for being threaded second valve body 2, root at female thread has a cannelure, the cannelure bottom has a step surface, this step surface is second confined planes 41, corresponding with second confined planes 41 on valve rod 3 ring cutting one step surface, this step surface is first confined planes 33, when first confined planes 33 contacted with second confined planes 41, valve rod just can not outwards move, and namely this moment, gas flow should be maximum, the knob other end is provided with a projection, this projection is second limiting section 42, also evenly is provided for screwing in the screwed hole of holding screw 9 simultaneously in knob 4 peripheries, and the effect of holding screw 9 is with the fixed-site of knob with respect to valve rod.
Shown in Fig. 5～6, provided a specific embodiment of lock dog, lock dog 5 has centre bore, and centre bore aperture and valve rod external diameter coupling, so that lock dog can be enclosed within the valve rod periphery, lock dog one end face is provided with a projection, and this projection is first limiting section 51, and the periphery of lock dog evenly is provided for screwing in the screwed hole of holding screw simultaneously.
The preferred flexible member of the present invention is spring 10, and sealing block 6 adopts organic plastics or resin material to make, and also can adopt the elastomeric material that easily recovers behind other stress deformations to make.
The installation process of above-mentioned preferred choke valve: 1) in first mounting groove bottom of first valve body 1 sealing ring 8 is installed, sealing block 6 is installed in the mounting groove of second valve body, 2 one ends, and installation sealing ring 8 in the groove on second valve body 2, at second valve body, 2 inner second step faces 21 pad is set, then in whole screw-in first mounting groove, make second valve body, 2 ends hold out against the sealing ring of first mounting groove bottom, 2) then successively with pad, spring 10 is enclosed within valve rod 3 peripheries, and pad is placed on the first step face 32, sealing ring 8 all is installed in the groove of valve rod external screw thread both sides, knob 7 inside are stretched in the end relative with the valve rod head, the screwed hole of alignment knob, cross pan head screw 71 is put internal tooth pad 72, be screwed into then in the screwed hole of knob, make the end of cross pan head screw 71 be screwed in the valve rod, valve rod and knob are connected as one, 3) again with lock dog 5, lock knob 4 is enclosed within valve rod 3 peripheries successively, 4) screw in the lump then in second valve body, be screwed on the outer end of second valve body at the lock knob 4 that will be enclosed within valve rod 3 peripheries.
The operation principle of above-mentioned preferred choke valve: by screwing knob 7, make valve rod 3 have the inside or outside amount of feeding, when the inside feeding of valve rod, the valve rod head progressively stretches in the centre bore of sealing block, realizes the blocking-up of gas access and gas outlet, when effusion meter (not shown) registration is zero, with holding screw 9 lock dog 5 is locked, the limiting section 51 of winning is contacted with second limiting section 42, can't continue to screw knob 7, be choke valve minimum discharge state this moment; When the outside feeding of valve rod, the valve rod head is progressively away from the centre bore of sealing block, gas access and gas outlet are in connected state all the time, when effusion meter (not shown) registration reaches the peak flow values that needs, by screwing cage knob 4, the confined planes 32 of winning is contacted with second confined planes 41, with holding screw 9 with cage knob 4 locking because valve rod does not have outside activity space, make valve rod transmission again, flow value also can't change again, is choke valve maximum stream flow state this moment.
Claims (10)
1. choke valve, comprise valve body and valve rod, it is characterized in that: described valve body comprises first valve body and second valve body, described first valve body has gas access and gas outlet, correspondingly with described gas access in described first valve body, be provided with the elastic packing piece, described sealing block has stationary seal face, and described threaded stem transmission is arranged on second valve body, has the movable sealing face corresponding with described stationary seal face on the described valve rod;
The both sides that are positioned at described threaded stem arrange first step face and first confined planes respectively on described valve rod, corresponding first step face arranges the second step face in described second valve body, and between two step surfaces flexible member is set;
The spacing cage knob of using of valve rod is set on described second valve body, described cage knob inboard has second confined planes corresponding with first confined planes, its spacing lock dog of using also is set on the described valve rod, described lock dog inboard has first limiting section, and the described cage knob outside has second limiting section corresponding with first limiting section.
2. choke valve according to claim 1, it is characterized in that: have in described first valve body for first mounting groove that sealing block and second valve body are installed, described first mounting groove, one end is connected with described gas access, the other end has female thread, described second valve body coupling female thread is provided with external screw thread, so that described first valve body is threaded with second valve body.
3. choke valve according to claim 1, it is characterized in that: the described second valve body outer end has external screw thread, and described cage knob coupling external screw thread is provided with female thread, so that described cage knob is threaded in the outer end of described second valve body.
4. choke valve according to claim 1, it is characterized in that: described flexible member is spring, described spring housing is provided with pad in the periphery of described valve rod at its two ends, and is installed in respectively on first step face and the second step face.
5. choke valve according to claim 1, it is characterized in that: described lock dog is enclosed within described valve rod periphery, and is positioned at the outside of described cage knob, evenly is provided with on described cage knob, the lock dog for the screwed hole that screws in holding screw.
6. choke valve according to claim 2, it is characterized in that: described sealing block is installed in described second valve body, one end, and screws in the lump in described first mounting groove, so that described sealing block contacts with described first mounting groove bottom.
7. choke valve according to claim 6, it is characterized in that: have the gas passage that communicates with described gas outlet on described second valve body, the both sides that are positioned at described gas passage all arrange sealing ring at described second valve body and the described first valve body joint, between described second valve body and the valve rod two seals circle is set, and lays respectively at the both sides of described second valve body and threaded stem junction.
8. choke valve according to claim 7, it is characterized in that: described second valve body adopts hollow structure, its inner valve rod installing space that forms, described sealing block has center cavity, and communicate with described gas access, described valve rod middle part has external screw thread, described second valve body coupling external screw thread is provided with female thread, described valve rod one end has the valve rod head with described center cavity coupling, and described valve rod head has the movable sealing face, and described movable sealing face is the conical surface, and described stationary seal face is the plane that the sealing block bottom has, described valve rod inserts in described second valve body from outside to inside, and by the screw thread transmission.
9. choke valve according to claim 8, it is characterized in that: described valve rod outboard end is provided be used to the knob of screwing valve rod.
10. according to claim 1 or 2 or 6 or 8 arbitrary described choke valves, it is characterized in that: described sealing block adopts organic plastics or resin material to make.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110455870.4A CN103182131B (en) | 2011-12-30 | 2011-12-30 | Choke valve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110455870.4A CN103182131B (en) | 2011-12-30 | 2011-12-30 | Choke valve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103182131A true CN103182131A (en) | 2013-07-03 |
| CN103182131B CN103182131B (en) | 2015-12-02 |
Family
ID=48673739
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110455870.4A Active CN103182131B (en) | 2011-12-30 | 2011-12-30 | Choke valve |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103182131B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964087A (en) * | 2015-07-01 | 2015-10-07 | 靖江市菲尔特液压机械有限公司 | Threaded cartridge type manual proportional reversing valve |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001095968A1 (en) * | 2000-06-13 | 2001-12-20 | Mallinckrodt Inc. | Fluid control valve for pressure vessel |
| US20020023648A1 (en) * | 1999-12-09 | 2002-02-28 | Medical Developments Australia, Pty, Ltd | Gas pressure regulator incorporating flow meter |
| US6416036B2 (en) * | 2000-01-31 | 2002-07-09 | Teijin Limited | Sealing arrangement between flow regulator and shut-off valve attached to oxygen cylinder |
| CN2503911Y (en) * | 2001-09-03 | 2002-08-07 | 张同合 | Spiral flow control valve of respirator |
| CN102266634A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Flow regulating valve and anesthesia machine comprising same |
| CN202446625U (en) * | 2011-12-30 | 2012-09-26 | 北京谊安医疗系统股份有限公司 | Throttling valve |
-
2011
- 2011-12-30 CN CN201110455870.4A patent/CN103182131B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020023648A1 (en) * | 1999-12-09 | 2002-02-28 | Medical Developments Australia, Pty, Ltd | Gas pressure regulator incorporating flow meter |
| US6416036B2 (en) * | 2000-01-31 | 2002-07-09 | Teijin Limited | Sealing arrangement between flow regulator and shut-off valve attached to oxygen cylinder |
| WO2001095968A1 (en) * | 2000-06-13 | 2001-12-20 | Mallinckrodt Inc. | Fluid control valve for pressure vessel |
| CN2503911Y (en) * | 2001-09-03 | 2002-08-07 | 张同合 | Spiral flow control valve of respirator |
| CN102266634A (en) * | 2010-12-31 | 2011-12-07 | 北京谊安医疗系统股份有限公司 | Flow regulating valve and anesthesia machine comprising same |
| CN202446625U (en) * | 2011-12-30 | 2012-09-26 | 北京谊安医疗系统股份有限公司 | Throttling valve |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104964087A (en) * | 2015-07-01 | 2015-10-07 | 靖江市菲尔特液压机械有限公司 | Threaded cartridge type manual proportional reversing valve |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103182131B (en) | 2015-12-02 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JP5745591B2 (en) | Occlusion and discharge valve assembly | |
| US9638331B2 (en) | Fluid control assemblies and flow path inserts | |
| US20100006787A1 (en) | Fluid Controller With Joint | |
| KR101401086B1 (en) | Prefabricated high-pressure flow control valve | |
| KR101241998B1 (en) | A butterfly valves | |
| CN202446625U (en) | Throttling valve | |
| CN103182131A (en) | Throttling valve | |
| CN202397935U (en) | Medical pneumatic control valve | |
| CN202590121U (en) | By-passing valve | |
| CN202371180U (en) | Ultrahigh pressure detecting stop valve | |
| CN103182138B (en) | medical two-position three-way valve | |
| CN114689130A (en) | Gas flowmeter with regulatory function | |
| CN103182129B (en) | Bypass valve | |
| CN113653807A (en) | Electric vacuum regulating valve for uranium concentration plant | |
| CN110617350A (en) | Straight-through type adjustable one-way valve | |
| CN201273377Y (en) | Gas valve | |
| CN201599417U (en) | Exhaust valve | |
| CN216789244U (en) | Stop valve | |
| CN102563091A (en) | Ultrahigh pressure detection stop valve | |
| CN217874204U (en) | Stop valve prevents excessive structure of screwing up | |
| CN220910538U (en) | Diaphragm valve with locking device | |
| CN211145467U (en) | Straight-through type adjustable one-way valve | |
| CN210770318U (en) | Pneumatic angle seat valve | |
| CN219673337U (en) | Replaceable bellows safety valve | |
| CN212584260U (en) | Container valve for pressure remote transmission of gas fire extinguishing system and gas fire extinguishing system |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |