CN1251820A - Hand jetting pump - Google Patents
Hand jetting pump Download PDFInfo
- Publication number
- CN1251820A CN1251820A CN 99121635 CN99121635A CN1251820A CN 1251820 A CN1251820 A CN 1251820A CN 99121635 CN99121635 CN 99121635 CN 99121635 A CN99121635 A CN 99121635A CN 1251820 A CN1251820 A CN 1251820A
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- pump
- pipe
- inflow
- piston
- pump chamber
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Abstract
A hand jetting pump includes a jet head part provided with a piston for opening liquid access therein, in which the piston is arranged in the center of jet head and provided with a nozzle connecting to the access in the piston; a pump chamber composed of a main body, a suction pipe and inner pipe connecting to liquid movement in the container, a supply pipe supplying the liquid to the pump chamber, a valve, a piston valve and a spring; a seal part composed of an outer cylindrical-shape part shaped together with hollow wall, an inner cylindrical-shape part, a gasket; an opening and closing part provided between middle of the lower of the pump chamber and the upper of the suction pipe. When pressing the nozzle, feeling soft and equably dispersing and jetting, without generating water drop, the jetting amount can be changed and can be used on products with different usages.
Description
The present invention relates to a kind of pump, thoughts and feelings is soft when particularly relating to a kind of spraying, and do not form water droplet and can spray equably, and the hand jetting pump that can improve other functions.
Hand jetting pump is used in metal can, on the upper lid of the fluid container of glass bottle or plastic cement bottle etc., and the jetting system that uses on the tank of dress fluids such as perfume, hair jelly (hair spray), deodorizer, throat spray particularly.
US Patent the 4th, 86, it is soft and spray inhomogeneous that No. 453 invention has a thoughts and feelings of jet pipe, easily produce defectives such as water droplet, owing to do not form groove in the feed pipe outside on its structure,, have only fixing use so there is not the variation of emitted dose, and because piston valve is long, its length can produce distortion during injection moulding.
And in above-mentioned patent, inner cylindrical portion and outer cylindrical portion assemble up discretely, and there is the problem of increase manufacturing expense in two parts of injection moulding so spraying the time is more easily leaked, and wanted.
On the other hand, existing hand jetting pump has the restriction that just can eject under the situation of the suction pipe contacting with fluid of hypomere.In other words, jet dredge pump because the fluid composition in the container is positioned at the suction pipe entrance, can eject just immediately, otherwise when jet dredge pump stood upside down, because the fluid composition in the container tilts toward the pump direction, it can not be positioned at the suction pipe entrance, so can not eject.
For addressing the above problem,,, so just there is the waste problem because fluid out of reach suction pipe entrance just can not be used at all if suction pipe length is cut short.
Main purpose of the present invention is to overcome the defective that prior art exists, and provide a kind of hand jetting pump, its inner cylindrical portion and outer cylindrical portion are one-body molded, make it when pressing shower nozzle, feel soft and can disperse equably to spray not generate water droplet, and can change emitted dose, can use on the product of different purposes.In addition, shorten the length of piston valve, can not produce the length distortion during injection moulding.
A time purpose of invention is to provide a kind of hand jetting pump, makes it can easily spray low viscosity (LV) and full-bodied fluid; And not only can spray, also can spray when handstand. just immediately
Another purpose of invention is to provide a kind of hand jetting pump, makes it can overcome lid that opens and closes container or the strong point of spraying quantitative inconvenience.Make tolerantly under air-tight state in the tank, can continue to be held, can not dry up, also can not go bad because of exterior gurry.
The objective of the invention is to realize by following technical scheme.
A kind of hand jetting pump, it is characterized in that it includes showerhead, pump chamber, airtight portion, suction pipe, wherein: showerhead, it is provided with the piston that is split into fluid passage in inside, this cylinder configuration is in shower nozzle central authorities, and is provided with the jet pipe of the path that connects internal piston; Pump chamber, it is made up of suction pipe and pump chamber in-to-in inner tube, the feed pipe that supplies fluid to pump chamber, valve, piston valve and the spring between valve and body bottom that body, connection container inner fluid move; Airtight portion, its by hollow wall, with the integrated outer cylindrical of hollow wall portion, be positioned at said external cylindrical part top inner cylindrical portion, block in the container pad of fluid and formed.
Purpose of the present invention can also further realize by following technical measures.
Aforesaid hand jetting pump is wherein in the bottom of pump chamber and the middle switching portion that flows into that is provided with in top of suction pipe.
Aforesaid hand jetting pump, wherein said inflow switching portion is provided with protrusion, steel ball, and protrusion constraint steel ball rotates.
Above-mentioned inflow switching of the present invention portion makes jet dredge pump just immediately, above-mentioned steel ball is positioned at elliptic flow body inflow entrance hypomere because of gravity, block inflow by the fluid of inflow entrance, when otherwise jet dredge pump stands upside down, because last note steel ball is oval fluid inflow entrance epimere because of gravity moves on to, inflow entrance is opened, and fluid passes through this inflow pipe to the pump the inside.
Aforesaid hand jetting pump, it is littler than the diameter of steel ball that wherein said inflow switching portion is provided with width, the oval-shaped inflow entrance that length is bigger than the diameter of steel ball.
Aforesaid hand jetting pump, the diameter of the inner tube portion inflow pipe of the top inflow pipe direct connection pump chamber section of wherein said inflow switching portion is littler than the diameter of bottom inflow pipe.
Preceding hand jetting pump wherein can not be provided with inner tube.
Aforesaid hand jetting pump, wherein jet pipe inside is provided with the groove of windmill shape.
Aforesaid hand jetting pump, wherein said piston valve are provided with the passage that connects piston inner hole, and the Design of length of this passage must be shorter, being the best below the 1cm.
Aforesaid hand jetting pump is characterized in that the inwall of described outer cylindrical portion is provided with outstanding helical.
The present invention compared with prior art has tangible advantage and effect thereof.
The spraying sense of hand jetting pump of the present invention is softer than existing manual type pump, does not produce water droplet and can spray equably.
Only exchange a part, just can easily produce multi-purpose jet dredge pump, can make airtight integrally, can save manufacturing cost.
In addition, because pump also can spray when standing upside down, even full-bodied fluid also can easily eject, so that fluid is arranged in user's hand is upright without holding pump.
Hand jetting pump can use on multiple product, for example cosmetic atomizing cone, Sunoil or body spray device (body spray), pharmaceutical atomizing cone, ringworm of the foot atomizing cone, the motion daily necessities atomizing cone such as atomizing cone of injuring, prevent electrostatic atomiser, industrial atomizing cone etc.
Concrete structure of the present invention is provided in detail by following examples and accompanying drawing thereof.
Fig. 1 is the vertical cross section of an embodiment of hand jetting pump of the present invention.
Fig. 2 is an embodiment of hand jetting pump of the present invention, also sprayable vertical cross section when standing upside down.
Fig. 3 is the part enlarged drawing on the feed pipe top of hand jetting pump of the present invention.
Fig. 4 is the pipe planar view of hand jetting pump of the present invention.
Fig. 5 be the present invention in addition with embodiment, do not establish the section-drawing of the structure pump chamber of inner tube.
Fig. 6 is that the present invention shows the part enlarged drawing that the inflow switching portion of fluid starts just immediately.
Fig. 7 is that the present invention shows the part amplification profile that the inflow switching portion of rotary fluid stands upside down and starts.
Fig. 8 is the planar view that fluid of the present invention flows into switching portion.
The symbol of vital parts of the present invention
1. showerhead 2. pump chambers
3. airtight 4. shower nozzles
5. jet pipe 6. pistons
7. 8. piston valve of valve (Seal valve)
9. spring 10. inner tube
11. feed pipe 12. inner cylindrical portions
13. outer cylindrical portion 14. pads
15. suction pipe 16. bodies
17. passage 18. helicals
19. hollow wall 20. pins
21. dust cap 22. flows into switching portion
23. steel ball 24. inflow entrances
25. profile portion 26,30. protrusions
27. bottom inflow pipe 28. top inflow pipes
40. groove
Below in conjunction with accompanying drawing and preferred embodiment, concrete structure, feature and the effect thereof of the hand jetting pump that foundation the present invention is proposed, describe in detail as after.
See also Fig. 1, shown in Figure 2, hand jetting pump of the present invention, it is by showerhead 1, and pump chamber 2 and airtight 3, suction pipe 15 are formed.Wherein:
Showerhead 1, it has the piston 6 that forms fluid passage in the inside, and this piston 6 is in the central authorities of cylindrical shape shower nozzle 4.Jet pipe 5 connections are located in the piston 6 in-to-in paths.Dust cap 21 covers the top of showerhead 1.
Pump chamber 2, it is made up of with the spring 9 that is connected pump chamber 2 in-to-in inner tube 10, the feed pipe 11 that supplies fluid to pump chamber 2, valve 7, is positioned at the piston valve 8 of piston 16 bottoms and is positioned at valve 7 and body 16 bottoms are middle the suction pipe 15 that body 16, container (not shown) inner fluid move on to.Piston valve 8 is installed on fixing inner tube 10 and the valve 7, and axially moves with valve 7.Piston valve 8 has several ribs (rib) that separate and the passage 17 that is connected piston inner hole for the space that the cylinder direction is arranged, and each rib guides piston valve 8 axial motions, and can connect the feed pipe 11 of pump chamber 2 with connecing.Passage 17 design-calculateds of prior art are longer, during injection moulding piston valve 8 easy deformation or take out from injection machine before injection machine just start.The fraction defective of product is higher, and production efficiency is low.And the present invention is owing to shorten the length of passage 17, and generally below 1cm, piston valve 8 can not be out of shape during injection moulding, takes out from injection machine to be easier to, so production efficiency can improve greatly.Suction pipe 15 is extended to container bottoms, suction pipe 15 is connected on the inner tube 10 of jet dredge pump lower part.Spring 9 is fixed in pump chamber 2, and the hypomere portion of spring 9 encloses admittedly inner tube 10, keep toward feed pipe 11 and direction of principal axis, and the epimere portion of spring 9 encloses the solid pin 20 past direction of principal axis that down prolong from valve 7 of living and keeps.
Airtight 3, it is by columnar hollow wall 19 and one-body molded and have at inwall and be made up of the outer cylindrical portion 13 of outstanding helical, the inner cylindrical portion 12 that is positioned at said external cylindrical part 13 tops, the pad 14 that blocks fluid in the container with hollow wall 19.
As shown in Figure 2, also can to spray mist in order standing upside down, in the middle of pump chamber 21 bottoms and suction pipe 15 tops, to have set up the switching portion 22 that flows into.This inflow switching portion 22 is provided with and opens and closes the steel ball 23 that fluid flows into.Though can fetter the steel ball rotation to constitute protrusion 26,30, can freely rotate to the gravity direction steel ball in certain space.Fluid was toward the space that pump chamber 2 inner tube 10 flow into when oval-shaped inflow entrance 24 was pump handstand, and the width of inflow entrance 24 is littler than the diameter of steel ball 23, and its length is bigger than the diameter of steel ball 23.Steel ball down rotates freely with gravity, can prevent that also fluid from flowing out toward pump chamber 2 outsides.Flow into the inner tube 10 of top inflow pipe 28 direct connection pump chambers 2 hypomeres of switching portion 22, the diameter of top inflow pipe 28 is littler than the diameter of bottom inflow pipe 27, makes the feed pressure of spraying big.At inflow switching portion 22 hypomeres suction pipe 15 is set and arrives container bottoms.
The operating principle of hand jetting pump of the present invention is as follows:
Depress shower nozzle 4, its strength is passed to piston valve 8 and valve 7 through piston 6, and its strength passes to body 16 again.At this moment, feed pipe 11 inside are airtight and constituted pressurized state with valve 7.Remove the pressure of shower nozzle 4 again, because of the recuperability of spring 9, shower nozzle 4, piston 16, piston valve 8 and valve 7 return to original position.In this process, the attractive force when restoring to the original state because of valve 7, feed pipe 11 inside are supplied to the fluid in the container, and same repeatedly action has fluid at feed pipe 11 and valve 7 middle space storages several times.
Under this kind state, press shower nozzle 4 again, as shown in Figure 3 by the several grooves 40 in the formation of feed pipe 11 tops, the fluid of trace flows out, and flows to the space in the body 16.The groove 40 of feed pipe 11 can be adjusted overhang according to purposes.After valve 7 was compressed to the bottom of feed pipe 11, when being restored to the original state by the strength of spring 9, the fluid in the suction pipe 15 attracted to feed pipe 11 midway, and 40 moments of hypomere process groove of valve 7, fluid no longer continues to be attracted.As shown in Figure 3, the length of A is long, and emitted dose is little, is ready emitted dose for a long time, and the length of A is reduced, and the length emitted dose of perhaps removing A just becomes many.Therefore when being ready that emitted dose is many or spraying full-bodied liquid, the quantity of groove and length can be reduced or remove groove and inner tube 10.Like this, after the fluid of storing in body 16 passes through piston 6 endoporus by the several grooves that form on the post jamb outside valve 7, also be equally to pass through the groove that outside piston valve 8, forms on the post jamb, move in the middle of the boundary of cylindrical part of piston valve 8 and piston 6 bottoms, after being over, the storage of body 16 inner fluids forms because of pressure, piston valve 8 is opened quickly, ejects from jet pipe 5 by piston 6 inner gateways.
As shown in Figure 4, in jet pipe 5 inside, owing to be provided with the groove 40 of windmill shape, fluid forms eddy current by this groove 40, so can roundedly eject.So action, the spray angle of jet pipe 5 broadens, and the feeling soft of pressure nozzle and can disperse equably to spray do not generate water droplet.
As shown in Figure 5, be another embodiment of the present invention,, can be provided with the hand jetting pump of the pump chamber 2 of inner tube 10 for the full-bodied liquid jet is provided.
The operating principle that flows into switching portion 22 that is characterized as in addition of the present invention.At first, see also shown in Figure 2ly, flow in the middle of the bottom and suction pipe 15 that switching portion 22 is attached to pump chamber 2.As shown in Figure 6, when pump just immediately, in the certain space of the profile portion 25 that limits the up-and-down movement width because of protrusion 26, freely the steel ball 23 of Zhuan Donging is positioned at oval-shaped inflow entrance hypomere by gravity.Under this kind situation, steel ball 23 blocks the path that flows to inflow pipe by the inflow entrance 24 of profile portion 25, and fluid only flows to inflow pipe by suction pipe.
Opposite when pump stands upside down, can consult shown in Figure 7ly, the starting principle of inflow switching portion 22 is described.For the facility that illustrates, the situation of the inflow switching portion 22 when figure is illustrated that conversely pump stands upside down.Because steel ball 23 is positioned at the epimere protrusion 26 of profile portion 25 by gravity, the path from inflow entrance 24 to inflow pipe is opened, and fluid flows into easily.And existing jet dredge pump, because pump is when standing upside down, the fluid in the container can not be located at below the container position, so the bottom of fluid impassabitity suction pipe 15 is flow into pump chamber.And the present invention is the also fluid of spray containers the inside easily when pump stands upside down.In order to be easy to assemble steel ball 23 and profile portion 25, the material that flows into switching portion 22 is to select the rubber-like raw MAT'L.Plastic resin such as polyethylene, polypropylene for example.
Be designed to diminish with connecting the diameter that flows into switching portion 22 in-to-in inflow pipes at diameter toward pump chamber 2 insertion portions, that is, the diameter that is designed to top inflow pipe 28 is littler than the diameter of bottom inflow pipe 27, and not only fluid flows into easily, and make the feed pressure height, spray full-bodied fluid easily.
See also shown in Figure 8, an embodiment for inflow switching of the present invention portion 22, at two protrusions the 26, the 30th of the outer position of profile portion 25, upwards break away from order to prevent steel ball, its also close the inside of outside cylinder than steel ball 23, and the protrusion 26 in profile portion 25 inner face positions is in order to prevent that steel ball 23 breaks away from downwards, its also than the column jacket circle of steel ball 23 also near the inside.
Claims (9)
1. a hand jetting pump is characterized in that it includes showerhead (1), pump chamber (2), airtight (3), suction pipe (15), wherein:
Showerhead (1), it is provided with the piston (6) that is split into fluid passage in inside, and this piston (6) is configured in shower nozzle (4) central authorities, and is provided with the jet pipe (5) that connects piston (6) in-to-in path;
Pump chamber (2), its by body (16), connect suction pipe (15) and pump chamber (2) in-to-in inner tube (10), the feed pipe (11) that supplies fluid to pump chamber (2), valve (7), the piston valve (8) that the container inner fluid moves and be positioned at valve (7) and body (16) bottom between spring (9) formed;
Airtight (3), it is by hollow wall (19), formed with hollow wall (19) integrated outer cylindrical portion (13), the inner cylindrical portion (12) that is positioned at said external cylindrical part (13) top, the pad (14) that blocks fluid in the container.
2. hand jetting pump according to claim 1 is characterized in that in the bottom of pump chamber (2) and the middle switching portion (22) that flows into that is provided with in top of suction pipe (15).
3. hand jetting pump according to claim 1 and 2 is characterized in that described inflow switching portion (22) is provided with protrusion (26), steel ball (23), and protrusion (26) constraint steel ball (23) rotates.
4. hand jetting pump according to claim 1 and 2, it is littler than the diameter of steel ball (23) to it is characterized in that described inflow switching portion (22) is provided with width, the oval-shaped inflow entrance (24) that length is bigger than the diameter of steel ball (23).
Attenuate the diameter of the inflow pipe that leads to pumping chamber 2 like this, once the feed pressure of the inflow pipe unit area that is subjected in the spraying action becomes big, so even high viscosity liquid also be sprayed to easily.
Also the note that goes up of this invention can be flowed into switching portion 22 and sprays in the pumping always and connect.That is, separate the suction pipe that always sprays the pumping hypomere,, flowing into the 22 hypomeres connection suction pipe use of switching portion again at the same inflow pipe of diameter of suction pipes such as this connection.
5. hand jetting pump according to claim 1 and 2, it is characterized in that the inner tube (10) of top inflow pipe (28) direct connection pump chamber (2) hypomere of described inflow switching portion (22), the diameter of top inflow pipe (28) is littler than the diameter of bottom inflow pipe (27).
6. hand jetting pump according to claim 1 is characterized in that can not being provided with inner tube (10) in the described pump chamber (2).
7. according to claim 1 or described hand jetting pump, it is characterized in that described jet pipe (5) inside is provided with the groove (40) of windmill shape.
8. according to claim 1 or described hand jetting pump, it is characterized in that described piston valve (8) is provided with the passage 17 that connects piston inner hole, the Design of length of this passage (17) must be shorter, being the best below the 1cm.
9. according to claim 1 or described hand jetting pump, it is characterized in that the inwall of described outer cylindrical portion (13) is provided with outstanding helical.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR42636/1998 | 1998-10-10 | ||
| KR1019980042636A KR100298909B1 (en) | 1998-10-10 | 1998-10-10 | Improved Manual Dosing Pump |
| KR9003/1999 | 1999-03-17 | ||
| KR1019990009003A KR100284813B1 (en) | 1999-03-17 | 1999-03-17 | Finger-operated spray pump available at its inverted state |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1251820A true CN1251820A (en) | 2000-05-03 |
| CN1165466C CN1165466C (en) | 2004-09-08 |
Family
ID=26634202
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB991216350A Expired - Lifetime CN1165466C (en) | 1998-10-10 | 1999-10-10 | Hand jetting pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1165466C (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103347618A (en) * | 2011-02-11 | 2013-10-09 | 宝洁公司 | Methods, devices and systems for refilling a fluid dispenser |
| CN104969754A (en) * | 2015-06-30 | 2015-10-14 | 巨野县天胜科技兴农种植专业合作社 | Planter and method for planting selenium-enriched corns |
| CN104984445A (en) * | 2015-07-30 | 2015-10-21 | 中山市美捷时包装制品有限公司 | Quantitative dosing actuator device enabling inverted spray assembly |
| CN105013051A (en) * | 2015-07-30 | 2015-11-04 | 中山市美捷时包装制品有限公司 | Countable quantitative dosing actuator device with protecting cover |
| CN105056353A (en) * | 2015-07-30 | 2015-11-18 | 中山市美捷时包装制品有限公司 | Nasal cavity sprayer device |
| CN105056354A (en) * | 2015-07-30 | 2015-11-18 | 中山市美捷时包装制品有限公司 | Spray pump device with extended nozzle |
| CN105129250A (en) * | 2015-07-30 | 2015-12-09 | 中山市美捷时包装制品有限公司 | Single-body universal proportional valve and spraying tank |
| CN105148364A (en) * | 2015-07-30 | 2015-12-16 | 中山市美捷时包装制品有限公司 | Sprayer with dust-proof safety device |
| CN107499694A (en) * | 2017-09-19 | 2017-12-22 | 江阴和盛塑胶有限公司 | A kind of spray bottle used for cosmetic |
| CN108670809A (en) * | 2018-08-07 | 2018-10-19 | 朱远湖 | Care device handle, sha-syndrome scraper, massage machine and Multi-function nursing device |
| CN111449403A (en) * | 2020-05-07 | 2020-07-28 | 杭州喙个科技有限公司 | Constant pressure cosmetic bottle capable of ensuring liquid outlet amount |
-
1999
- 1999-10-10 CN CNB991216350A patent/CN1165466C/en not_active Expired - Lifetime
Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103347618A (en) * | 2011-02-11 | 2013-10-09 | 宝洁公司 | Methods, devices and systems for refilling a fluid dispenser |
| CN103347618B (en) * | 2011-02-11 | 2016-02-17 | 宝洁公司 | For recharging the methods, devices and systems of fluid distributor |
| CN104969754A (en) * | 2015-06-30 | 2015-10-14 | 巨野县天胜科技兴农种植专业合作社 | Planter and method for planting selenium-enriched corns |
| CN105129250A (en) * | 2015-07-30 | 2015-12-09 | 中山市美捷时包装制品有限公司 | Single-body universal proportional valve and spraying tank |
| CN105056353A (en) * | 2015-07-30 | 2015-11-18 | 中山市美捷时包装制品有限公司 | Nasal cavity sprayer device |
| CN105056354A (en) * | 2015-07-30 | 2015-11-18 | 中山市美捷时包装制品有限公司 | Spray pump device with extended nozzle |
| CN105013051A (en) * | 2015-07-30 | 2015-11-04 | 中山市美捷时包装制品有限公司 | Countable quantitative dosing actuator device with protecting cover |
| CN105148364A (en) * | 2015-07-30 | 2015-12-16 | 中山市美捷时包装制品有限公司 | Sprayer with dust-proof safety device |
| CN104984445A (en) * | 2015-07-30 | 2015-10-21 | 中山市美捷时包装制品有限公司 | Quantitative dosing actuator device enabling inverted spray assembly |
| CN105129250B (en) * | 2015-07-30 | 2018-02-13 | 中山市美捷时包装制品有限公司 | A kind of universal quantitative valve of monomer and aerosol can |
| CN105056354B (en) * | 2015-07-30 | 2019-04-26 | 中山市美捷时包装制品有限公司 | A kind of band lengthens the atomizing pump device of nozzle |
| CN107499694A (en) * | 2017-09-19 | 2017-12-22 | 江阴和盛塑胶有限公司 | A kind of spray bottle used for cosmetic |
| CN108670809A (en) * | 2018-08-07 | 2018-10-19 | 朱远湖 | Care device handle, sha-syndrome scraper, massage machine and Multi-function nursing device |
| CN108670809B (en) * | 2018-08-07 | 2023-11-28 | 朱远湖 | Nursing device handle, scraping device, massage device and multifunctional nursing device |
| CN111449403A (en) * | 2020-05-07 | 2020-07-28 | 杭州喙个科技有限公司 | Constant pressure cosmetic bottle capable of ensuring liquid outlet amount |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1165466C (en) | 2004-09-08 |
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| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: (STRAIN) ZHONG YU INDUSTRIAL Free format text: FORMER NAME OR ADDRESS: (CORPORATION)ZHONGYU INDUSTRY |
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| CP01 | Change in the name or title of a patent holder |
Address after: Inchon, Korea Patentee after: Chong Woo Co., Ltd. Address before: Inchon, Korea Patentee before: Chong Woo Co., Ltd. |
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| CX01 | Expiry of patent term | ||
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Granted publication date: 20040908 |