CN206801947U - A kind of open water pump and water tank cleaner - Google Patents
A kind of open water pump and water tank cleaner Download PDFInfo
- Publication number
- CN206801947U CN206801947U CN201720445822.XU CN201720445822U CN206801947U CN 206801947 U CN206801947 U CN 206801947U CN 201720445822 U CN201720445822 U CN 201720445822U CN 206801947 U CN206801947 U CN 206801947U
- Authority
- CN
- China
- Prior art keywords
- water
- accommodating cavity
- delivery port
- baffle plate
- stream channel
- 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.)
- Expired - Fee Related
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 175
- 239000007921 spray Substances 0.000 claims abstract description 45
- 238000001914 filtration Methods 0.000 claims 1
- 238000004140 cleaning Methods 0.000 abstract description 15
- 239000011538 cleaning material Substances 0.000 abstract description 4
- 230000000694 effects Effects 0.000 description 8
- 238000010586 diagram Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000004851 dishwashing Methods 0.000 description 2
- 235000012055 fruits and vegetables Nutrition 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000002386 leaching Methods 0.000 description 1
- 239000013618 particulate matter Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 235000013311 vegetables Nutrition 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Structures Of Non-Positive Displacement Pumps (AREA)
Abstract
It the utility model is related to a kind of open water pump and water tank cleaner, including impeller, accommodating cavity and water outlet part, the top end opening of the accommodating cavity forms water inlet, the side of the accommodating cavity offers the first delivery port, second delivery port, it is additionally provided with the accommodating cavity and selects first delivery port of closing, the closure member of second delivery port, the water outlet part is provided with water inlet, the water inlet of the accommodating cavity is located at below the water inlet of the water outlet part, the water outlet part has the first relatively independent water stream channel, second water stream channel, first water stream channel connects with the first delivery port, second water stream channel connects with the second delivery port, the top surface of the water outlet part is additionally provided with the first spray apertures connected with the first water stream channel, and the second spray apertures connected with the second water stream channel.In this way, meeting more cleaning model demands, treating cleaning materials has more preferable adaptability.
Description
Technical field
It the utility model is related to a kind of open water pump and water tank cleaner.
Background technology
Existing dish-washing machine is typically to use traditional water pump, and impeller necessarily be in the chamber of closing, not only complicated,
And processing request is high, usual chamber must be closed, otherwise all can in the top of chamber, the i.e. direction parallel with the circumference of impeller
There is leak, unless outlet is arranged to parallel with the circumference of impeller；In addition, need to set between water pump and spray equipment long
Pipeline, to ensure to clean the flowing of current, and the water inlet of water pump can typically be provided with single filter, dirty to ensure
Thing will not enter water pump, block the pump housing.This water pump is not only complicated, and has the ground of less cleaning unavoidably on pipeline
Side, after long-time use, will also result in health concerns.
The water basin dish-washing machine of side too also discloses that a kind of open water pump, but the water pump can only realize unidirectional water outlet spray
Leaching, i.e. water flow jet direction immobilizes, and a generally only direction injection, for adhere to very firm particulate matter then compared with
Difficulty is washed down, unless can just be cleaned up with very strong scouring force or with the spray of longer time, but can waste money
Source.
Utility model content
In view of this, it is necessary to which a kind of preferably open water pump of cleaning performance and water tank cleaner are provided.
The utility model is achieved through the following technical solutions：
A kind of open water pump, including impeller, accommodating cavity and water outlet part, the impeller include central shaft and in described
The multiple blades being uniformly distributed circumferentially on the side face of mandrel, the impeller are placed in the accommodating cavity, it is characterised in that：It is described
The top end opening of accommodating cavity forms water inlet, and the side of the accommodating cavity offers the first delivery port, the second delivery port, the appearance
Put to be additionally provided with chamber and select first delivery port of closing, the closure member of the second delivery port, the water outlet part is provided with water inlet, the appearance
The water inlet for putting chamber is located at below the water inlet of the water outlet part, and there are the first relatively independent current of the water outlet part to lead to
Road, the second water stream channel, the first water stream channel connect with the first delivery port, and the second water stream channel connects with the second delivery port, institute
The top surface for stating water outlet part is additionally provided with the first spray apertures connected with the first water stream channel and connected with the second water stream channel
Second spray apertures.
The water inlet of the water outlet part is provided with filter.
The closure member is to be arranged on being rotated and reverse by current driving in accommodating cavity and selectivity the first water outlet of closing
The baffle plate of mouth and the second delivery port, the accommodating cavity is interior to be provided with the sliding groove for being used for laying the baffle plate.
The accommodating cavity inner chamber is rounded, and the sliding groove is curved, and the sliding groove and accommodating cavity inner chamber are concentric, institute
The curved sheet of baffle plate is stated, the inner chamber of the baffle plate and accommodating cavity is concentric.
Guide frame is provided between the side of the baffle plate and the sliding groove.
The guide frame includes being arranged at the guide groove of sliding groove and the guided way being convexly equipped in the baffle sidewall, institute
Circumferencial direction of the guided way along the baffle plate is stated to set.
The guided way, guide groove at least two and it is intervally arranged up and down.
The first screens and the second screens for preventing baffle plate from continuing motion are provided with the accommodating cavity, baffle plate both ends support respectively
In the first screens or the second screens.
The both ends of the baffle plate are provided with sail portion, and the first screens and the second screens are provided with the depression coordinated with sail portion.
A kind of water tank cleaner, including water trough body, it is characterised in that：The water trough body bottom is provided with described above
Open water pump, the water outlet part is spray arm.
Beneficial effect is caused by the utility model：
The top end opening of the accommodating cavity forms water inlet, and the side of the accommodating cavity offers the first delivery port, second
Delivery port, it is additionally provided with the accommodating cavity and selects first delivery port of closing, the closure member of the second delivery port, the water outlet part is set
There is water inlet, the water inlet of the accommodating cavity is located at below the water inlet of the water outlet part, and the water outlet part has relatively independent
The first water stream channel, the second water stream channel, the first water stream channel connects with the first delivery port, and the second water stream channel goes out with second
The mouth of a river connects, the top surface of the water outlet part be additionally provided with the first spray apertures for being connected with the first water stream channel and with the second water
Second spray apertures of circulation road connection.In this way, can be turned on free switching the first water stream channel or the second water stream channel realize from
First spray apertures or the second spray apertures eject current, can be by being set to the first spray apertures, the second spray apertures difference direction
The current of different directions can be formed by putting, and the current of different directions can treat spot the hitting in different directions of cleaning materials adhesion
Hitting and rub, two different directions hit friction spots so that spot easily comes off, and greatly improve cleaning efficiency, and clearly
Wash that effect is good, in addition, the effect that current are sprung up can also be played when switching the current of different directions so that cleaning performance is more
It is good, in addition, more cleaning models are also increased, meet the requirement that various things to be cleaned more clean so that cleaning
Adaptability is stronger.
The water inlet of the water outlet part is provided with filter.In this way, can be filtered to entering the water in accommodating cavity,
By foul isolation outside impeller and accommodating cavity, in order to avoid result in blockage.
The closure member is to be arranged on being rotated and reverse by current driving in accommodating cavity and selectivity the first water outlet of closing
The baffle plate of mouth and the second delivery port, the accommodating cavity is interior to be provided with the sliding groove for being used for laying the baffle plate.In this way, cleverly apply impeller
Current driving baffle plate motion the first delivery port of closing or the second delivery port are driven, it is simple in construction without setting driving part in addition
And cost is low.
The accommodating cavity inner chamber is rounded, and the sliding groove is curved, and the sliding groove and accommodating cavity inner chamber are concentric, institute
The curved sheet of baffle plate is stated, the inner chamber of the baffle plate and accommodating cavity is concentric.In this way, the resistance of baffle plate motion is smaller, free movement is more
Add smooth and simple in construction easy to operate.
Guide frame is provided between the side of the baffle plate and the sliding groove.In this way, the baffle plate resistance of motion is small, and keep off
Board position is not easy to offset so that the effect of closing is preferable.
The guide frame includes being arranged at the guide groove of sliding groove and the guided way being convexly equipped in the baffle sidewall, institute
Circumferencial direction of the guided way along the baffle plate is stated to set.In this way, simple in construction and easily manufactured, baffle plate free movement more may be used
Lean on.
The guided way, guide groove at least two and it is intervally arranged up and down.It is in this way, symmetrical setting up and down so that baffle plate
Positioning it is more preferable, position is not easy to offset or rocked so that sealing effect is more preferable.
The first screens and the second screens for preventing baffle plate from continuing motion are provided with the accommodating cavity, baffle plate both ends support respectively
In the first screens or the second screens.So so that baffle plate can preferably stop at detent position, and sealing effect is preferable.
The both ends of the baffle plate are provided with sail portion, and the first screens and the second screens are provided with the depression coordinated with sail portion.In this way, can
Further to reduce the resistance to water-flow of baffle plate so that baffle plate motion is more smooth.
Brief description of the drawings
The utility model is described in further detail below in conjunction with accompanying drawing：
Fig. 1 is the schematic diagram of the better embodiment of water tank cleaner first described in the utility model；
Fig. 2 is the partial schematic diagram of the delivery port of open water pump second conducting；
Fig. 3 is the partial schematic diagram of the delivery port of open water pump first conducting；
Fig. 4 is the schematic diagram of the baffle plate；
Fig. 5 is the three-dimensional cutaway view of baffle plate described in Fig. 4；
Fig. 6 is the top view of the spray arm；
Fig. 7 is the sectional view of the spray arm.
Label is as follows corresponding to component names in figure：
10th, water tank cleaner；11st, water trough body；111st, it is open；12nd, open water pump；121st, motor；122nd, impeller；
1221st, chassis；1222nd, central shaft；1223rd, blade；123rd, accommodating cavity；1231st, water inlet；1232nd, the first delivery port；1233、
Second delivery port；1234th, sliding groove；124th, spray arm；1241st, water inlet；1242nd, the first water stream channel；1243rd, the second current
Passage；1244th, the first spray apertures；1245th, the second spray apertures；1246th, filter；13rd, baffle plate；131st, guide groove；132nd, it is oriented to
Rail；133rd, the first screens；134th, the second screens；135th, sail portion.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is described in further detail to the utility model：
Embodiment one：
The first better embodiment of the utility model water tank cleaner shown in Fig. 1 is referred to, the water tank type is clear
Washing machine 10 includes water trough body 11 and open water pump 12, and the open water pump 12 includes motor 121, impeller 122, accommodating cavity
123 and water outlet part, the motor 121 be located at the bottom part down of water trough body 11, the impeller 122 is located in accommodating cavity 123, should
Water outlet part is located at the top of accommodating cavity 123.
The bottom of the water trough body 11 offers opening 111, and motor 121 is located at the lower section of opening 111 of water trough body 11,
And extended upwardly into the position correspondence of opening 111, the output shaft of motor 121 by opening 111 in water trough body 11.Impeller
122 chassis 1221, central shaft 1222 and multiple blades 1223 including being adapted to the shapes and sizes of opening 111.Chassis 1221
At opening 111, opening 111 is closed, thus avoids the water in water trough body 11 from flowing out outside screw clamp body 11.Center
Axle 1222 can be located at the center on chassis 1221, the output axis connection with motor 121, week of multiple blades 1223 in central shaft 1222
It is uniformly distributed circumferentially, is formed radial on face.When motor operates, the output shaft of motor can drive central shaft 1222 to rotate, from
And rotated with movable vane piece 1223 with central shaft 1222, pressure is applied to water.
Also referring to Fig. 2 and Fig. 3, the top end opening of the accommodating cavity 123 forms the water inlet 1231 of water pump, chassis
The bottom of 1221 closing accommodating cavities 123.The side of the accommodating cavity 123 offers the first delivery port 1232, the second delivery port
1233, it is additionally provided with the accommodating cavity 123 and selects closing first delivery port 1232, the closure member of the second delivery port 1233, the closing
Part is to be arranged on being rotated and reverse by current driving in accommodating cavity 123 and selectively close the first delivery port 1232 and second
The baffle plate 13 at the mouth of a river 1233, the accommodating cavity 123 is interior to be provided with the sliding groove 1234 for being used for laying the baffle plate 13.
Also referring to Fig. 4 and Fig. 5, in the present embodiment, the inner chamber of accommodating cavity 123 is rounded, the sliding groove
1234 is curved, and the sliding groove 1234 and the inner chamber of accommodating cavity 123 are concentric, the 13 curved sheet of baffle plate, the baffle plate 13
It is concentric with the inner chamber of accommodating cavity 123.Guide frame, the guiding are provided between the side of the baffle plate 13 and the sliding groove 1234
Structure includes being arranged at the guide groove 131 of sliding groove 1234 and the guided way 132 being convexly equipped in the side wall of baffle plate 13, described to lead
Circumferencial direction to rail 132 along the baffle plate 13 is set, in this way, the resistance of motion of baffle plate 13 is small, and the position of baffle plate 13 is not easy partially
Move so that the effect of closing is preferable.In the present embodiment, the guided way 132, guide groove 131 be two and between the upper and lower every
Arrangement, the accommodating cavity 123 is interior to be provided with the first screens 133 and the second screens 134 for preventing baffle plate 13 from continuing motion, 13 liang of baffle plate
End is held in the first screens 133 or the second screens 134 respectively, so that baffle plate 13 can timely be locked to the first screens
133 or second screens 134.The both ends of the baffle plate 13 are equipped with sail portion 135, the first screens 133 and the second screens 134 be provided with
The depression that sail portion 135 coordinates, it is to reduce resistance by setting the purpose in sail portion 135 so that baffle plate 13 moves more smooth.
Also referring to Fig. 6 and Fig. 7, the water outlet part is spray arm 124, and the spray arm 124 is provided with water inlet
1241, the water inlet 1231 of the accommodating cavity 123 is located at the lower section of the water inlet 1241, and the spray arm 124 has relatively independent
First water stream channel 1242, the second water stream channel 1243, the first water stream channel 1242 connect with the first delivery port 1232, the second water
Circulation road 1243 is connected with the second delivery port 1233, and the top surface of the spray arm 124 is additionally provided with to be connected with the first water stream channel 1242
The first spray apertures 1244 and the second spray apertures 1245 for being connected with the second water stream channel 1243.In the present embodiment, institute
State the first water stream channel 1242, the second water stream channel 1243 is set up in parallel in a ring, the first water stream channel 1242 is in the second current
The outside of passage 1243, the first spray apertures 1244 are towards same direction of rotation so that the water projected from the first spray apertures 1244
The rotary current of manifold circlewise, the second spray apertures 1245 towards the direction of rotation opposite with the first spray apertures 1244 so as to
So that the current ejected from the second spray apertures 1245 form the rotary current of reverse ring-type.In this way, water flow rotary direction phase
Instead, the revolving force that cleaning materials applies different directions is treated so that thing cleaning to be cleaned more rapidly and efficiently, especially cleans fruit
During vegetable, allow under the drive of current fruits and vegetables be rotated in a clockwise direction can also rotate counterclockwise, switch different directions
Rotary water current cause the dirty more easy to fall off of fruit and vegetable surfaces, reach the cleaning of no dead angle, in addition, during the current of switching different directions
The effect that turbulent flow is sprung up can also be played so that cleaning performance is more preferable.
The course of work of open water pump 12 is as follows：When the impeller 122 of motor 121 rotates forward, impeller 122 drives current
Rotate forward so as to drive baffle plate 13 to rotate forward, until baffle plate 13 is held in the first screens 133, so as to close the first delivery port
1232, water flows through the water stream channel 1243 of the second delivery port 1233 to the second and ejected from the second spray apertures 1245；Work as motor belt motor
When movable vane wheel inverts, impeller drives flow of water reverses so as to drive baffle plate to rotate backward, until baffle plate 13 is held in the second screens
134, so as to close the second delivery port 1233, water flows through the water stream channel 1242 of the first delivery port 1232 to the first and sprayed from first
Hole 1244 is ejected, in this way, current are from the first spray apertures 1244, the alternating spray current of the second spray apertures 1245.
In the present embodiment, filter 1246 is additionally provided with the water inlet 1241 of the spray arm 124, filter 1246 can
To be integrally formed with spray arm 124, in this way, can be filtered to entering the water in accommodating cavity 123, foul is completely cut off in impeller
122 and accommodating cavity 123 outside, in order to avoid result in blockage.
The top end opening of the accommodating cavity 123 forms water inlet 1231, and the side of the accommodating cavity 123 offers first and gone out
The mouth of a river 1232, the second delivery port 1233, it is additionally provided with the accommodating cavity 123 and selects closing first delivery port 1232, the second water outlet
The closure member of mouth 1233, the water outlet part are provided with water inlet 1241, and the water inlet 1231 of the accommodating cavity 123 is located at the outlet part
The lower section of water inlet 1241 of part, the water outlet part have the first relatively independent water stream channel 1242, the second water stream channel
1243, the first water stream channel 1242 connects with the first delivery port 1232, and the second water stream channel 1243 connects with the second delivery port 1233
Logical, the top surface of the water outlet part is additionally provided with the first spray apertures 1244 for being connected with the first water stream channel 1242 and with second
The second spray apertures 1245 that water stream channel 1243 connects.In this way, the first water stream channel 1242 or the second can be turned on free switching
Water stream channel 1243, which is realized from the first spray apertures 1244 or the second spray apertures 1245, ejects current, can be by being sprayed to first
The setting in hole 1244,1245 different directions of the second spray apertures can form the current of different directions, and the current of different directions can be with
Shock and friction of the spot in different directions of cleaning materials adhesion are treated, two different directions hit friction spot so that spot
Easily come off, greatly improve cleaning efficiency, and cleaning performance is good, in addition, can also when switching the current of different directions
Play the effect that current are sprung up so that cleaning performance is more preferable, in addition, also increases more cleaning models, meets various
The requirement that thing to be cleaned more cleans so that the adaptability of cleaning is stronger.
It is appreciated that the closure member can also be driven by external force such as magnetic valve or motors selects first delivery port of closing
Or second delivery port.
It is appreciated that the filter and spray arm are detachable structure.
Claims (10)
1. a kind of open water pump, including impeller, accommodating cavity and water outlet part, the impeller includes central shaft and at the center
The multiple blades being uniformly distributed circumferentially on the side face of axle, the impeller are placed in the accommodating cavity, it is characterised in that：The appearance
The top end opening for putting chamber forms water inlet, and the side of the accommodating cavity offers the first delivery port, the second delivery port, described accommodating
It is additionally provided with chamber and selects first delivery port of closing, the closure member of the second delivery port, the water outlet part is provided with water inlet, and this is accommodating
The water inlet of chamber is located at below the water inlet of the water outlet part, the water outlet part have the first relatively independent water stream channel,
Second water stream channel, the first water stream channel connect with the first delivery port, and the second water stream channel connects with the second delivery port, it is described go out
The top surface of wet part is additionally provided with the first spray apertures connected with the first water stream channel and connected with the second water stream channel second
Spray apertures.
2. open water pump as claimed in claim 1, it is characterised in that：The water inlet of the water outlet part is provided with filtering
Plate.
3. open water pump as claimed in claim 1, it is characterised in that：The closure member be arranged in accommodating cavity by water
Stream driving rotates and reverse and the baffle plate of selectivity the first delivery port of closing and the second delivery port, is provided with the accommodating cavity and is used to pacify
Put the sliding groove of the baffle plate.
4. open water pump as claimed in claim 3, it is characterised in that：The accommodating cavity inner chamber is rounded, the sliding groove
It is curved, and the sliding groove and accommodating cavity inner chamber are concentric, the curved sheet of baffle plate, the inner chamber of the baffle plate and accommodating cavity is same
The heart.
5. open water pump as claimed in claim 4, it is characterised in that：Set between the side of the baffle plate and the sliding groove
There is guide frame.
6. open water pump as claimed in claim 5, it is characterised in that：The guide frame includes being arranged at leading for sliding groove
To groove and the guided way being convexly equipped in the baffle sidewall, circumferencial direction of the guided way along the baffle plate is set.
7. open water pump as claimed in claim 6, it is characterised in that：The guided way, guide groove at least two and up and down
It is intervally arranged.
8. open water pump as claimed in claim 3, it is characterised in that：Being provided with the accommodating cavity prevents baffle plate from continuing to move
The first screens and the second screens, baffle plate both ends are held in the first screens or the second screens respectively.
9. open water pump as claimed in claim 8, it is characterised in that：The both ends of the baffle plate are provided with sail portion, the first screens
The depression coordinated with sail portion is provided with the second screens.
10. a kind of water tank cleaner, including water trough body, it is characterised in that：The water trough body bottom is provided with right such as will
The open water pump described in 1 to 9 any one is sought, the water outlet part is spray arm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720445822.XU CN206801947U (en) | 2017-04-26 | 2017-04-26 | A kind of open water pump and water tank cleaner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720445822.XU CN206801947U (en) | 2017-04-26 | 2017-04-26 | A kind of open water pump and water tank cleaner |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206801947U true CN206801947U (en) | 2017-12-26 |
Family
ID=60737838
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720445822.XU Expired - Fee Related CN206801947U (en) | 2017-04-26 | 2017-04-26 | A kind of open water pump and water tank cleaner |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206801947U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110448255A (en) * | 2018-05-07 | 2019-11-15 | 佛山市纳沃电子科技有限公司 | A kind of dishwasher structure and dish-washing machine |
| CN112006633A (en) * | 2020-08-31 | 2020-12-01 | 宁波方太厨具有限公司 | Spray arm and application thereof |
| CN112790694A (en) * | 2019-11-14 | 2021-05-14 | 宁波方太厨具有限公司 | Cleaning machine and cleaning method |
| CN114718883A (en) * | 2022-04-21 | 2022-07-08 | 纪宇鹏 | Corrosion-resistant wear-resistant centrifugal pump |
-
2017
- 2017-04-26 CN CN201720445822.XU patent/CN206801947U/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110448255A (en) * | 2018-05-07 | 2019-11-15 | 佛山市纳沃电子科技有限公司 | A kind of dishwasher structure and dish-washing machine |
| CN112790694A (en) * | 2019-11-14 | 2021-05-14 | 宁波方太厨具有限公司 | Cleaning machine and cleaning method |
| CN112790694B (en) * | 2019-11-14 | 2022-06-21 | 宁波方太厨具有限公司 | Cleaning machine and cleaning method |
| CN112006633A (en) * | 2020-08-31 | 2020-12-01 | 宁波方太厨具有限公司 | Spray arm and application thereof |
| CN112006633B (en) * | 2020-08-31 | 2022-01-14 | 宁波方太厨具有限公司 | Spray arm and application thereof |
| CN114718883A (en) * | 2022-04-21 | 2022-07-08 | 纪宇鹏 | Corrosion-resistant wear-resistant centrifugal pump |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171226 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |