CN1538063A - Suction valve assembly of reciprocating compressor - Google Patents
Suction valve assembly of reciprocating compressor Download PDFInfo
- Publication number
- CN1538063A CN1538063A CNA2004100074622A CN200410007462A CN1538063A CN 1538063 A CN1538063 A CN 1538063A CN A2004100074622 A CNA2004100074622 A CN A2004100074622A CN 200410007462 A CN200410007462 A CN 200410007462A CN 1538063 A CN1538063 A CN 1538063A
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- CN
- China
- Prior art keywords
- valve
- suction
- suction valve
- hole
- piston
- 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.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B39/00—Component parts, details, or accessories, of pumps or pumping systems specially adapted for elastic fluids, not otherwise provided for in, or of interest apart from, groups F04B25/00 - F04B37/00
- F04B39/10—Adaptations or arrangements of distribution members
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B35/00—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for
- F04B35/04—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric
- F04B35/045—Piston pumps specially adapted for elastic fluids and characterised by the driving means to their working members, or by combination with, or adaptation to, specific driving engines or motors, not otherwise provided for the means being electric using solenoids
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B15/00—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts
- F04B15/06—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure
- F04B15/08—Pumps adapted to handle specific fluids, e.g. by selection of specific materials for pumps or pump parts for liquids near their boiling point, e.g. under subnormal pressure the liquids having low boiling points
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Compressor (AREA)
- Check Valves (AREA)
- Compressors, Vaccum Pumps And Other Relevant Systems (AREA)
Abstract
A suction valve assembly of a reciprocating compressor comprises: a valve supporting body inserted-fixed to a valve mounting portion formed at a piston and provided with at least one suction hole through which a fluid introduced into a suction passage of the piston is supplied to a compression chamber of a cylinder; and a suction valve mounted at the valve supporting body to be rotatable within a certain range, for opening and closing the suction hole formed at the valve supporting body. According to this, a damage of the suction valve due to fatigue is prevented thus to enhance a reliability of the compressor.
Description
Technical field
The present invention relates to a kind of suction valve assembly of reciprocal compressor, specifically be, relate to a kind of suction valve assembly that can strengthen the reciprocal compressor of compressor reliability, this enhancing is by preventing owing to the tired damage that causes of suction valve realizes.
Background technique
Usually, compressor is divided into rotary compressor, reciprocal compressor, scroll compressor etc. according to the fluid compress mode.
Fig. 1 is the sectional view according to the reciprocal compressor of prior art.
Existing reciprocal compressor comprises: sealed enclosure 106, and suction pipe 102 and discharge pipe 104 are coupled; Reciprocating motor 108, it is arranged in the casing 106, is used to produce reciprocating force; Compression unit 110 is used for the compressed fluid by the reception reciprocating force that reciprocating motor 108 produced; And framework 132,134 and 136, they are used to support reciprocating motor 108 and compression unit 110.
Reciprocating motor 108 comprises: external stator 118, and this external stator has cylinder form, and coil 122 twines thereon; Inner stator 120, this inner stator are arranged on the inner circumferential surface of external stator 118 with certain air clearance; And magnet 124, this magnet is arranged between external stator 118 and the inner stator 120 at certain intervals, is used for carrying out when coil 122 is connected power supply linear reciprocating motion.
First resonant springs 138 and second resonant springs 140 are arranged between the both side surface and framework 132 and 136 of magnet holder 126 respectively, thereby cause the harmonic moving of piston 128.
Piston 128 heart therein has the path 152 of suction, suck path and longitudinally form, and fluid is sucked by this path.Piston 128 also has the hole 154 of suction in its front side, this suction hole is used for supplying to compression chamber 142 with being imported into the fluid that sucks path 152.And clamping slot 158 is formed at the center of piston 128 front sides, and suction valve 148 is connected with bolt with this clamping slot.
As shown in Figure 2, suction valve 148 forms the disc-shape with certain elastic force, and the one side is fixed in the front surface of piston 128 by bolt 160.
That is to say that suction valve 148 is made up of standing part 164 and ON/OFF part 166, the standing part heart therein has bolt hole 162, and is fixed in the center of the front surface of piston 128 by bolt 160; And ON/OFF part 166 is cut into curve shape on the basis of standing part 164, inhales hole 154 to open and close.
Fig. 3 and Fig. 4 are the sectional view that shows according to the working state of the suction valve of prior art.
In suction valve according to the reciprocal compressor of prior art, when reciprocating motor 108 is driven, magnet 124 to-and-fro motion linearly, thus the piston 128 that is connected with magnet 124 is also by to-and-fro motion linearly, thus compressed fluid.
That is to say, as shown in Figure 3, when piston 124 was return, the pressure owing to fluid spreaded the ON/OFF part 166 of suction valve 148 in the front side of piston 128, inhale hole 154 to open, thereby the fluid that will be introduced in the suction path 152 of piston 128 supplies to compression chamber 142.
In this state, when piston 124 travelled forward with compressed fluid under the driving of reciprocating motor 108, suction valve 148 was inhaled hole 154 owing to himself elastic force is attached at the front surface of piston 124 with sealing.And, when the pressure in the compression chamber 142 along with moving forward of piston 128 during greater than predetermined pressure, escape cock 150 is opened, and is discharged into the external world with the fluid that will be compressed in compression chamber 142.
Yet the suction valve of the reciprocal compressor of prior art has thin disc-shape, and the flexibly distortion on the basis of being fixed in the standing part on the piston of ON/OFF part is inhaled the hole to open and close.Therefore, if on/off operation is carried out on ON/OFF partial continuous ground, so suction valve with regard to since tired or excessive unlatching damage, thereby the reduction reliability of products.
And because suction valve is carried out on/off operation by resiliently deformable, thereby responsiveness is owing to too much on/off operation reduces.
In addition, because the suction valve bolt is connected to the front surface of piston, therefore in compression chamber, has produced one section dead volume, thereby reduced compression efficiency.
Summary of the invention
Therefore, one object of the present invention is to provide a kind of suction valve assembly of reciprocal compressor, this assembly can prevent suction valve because the tired damage that causes by preventing that suction valve from too much opening, thereby and the reliability of enhancing compressor, in this compressor, suction valve is by rotatablely moving and the linear reciprocating motion opening and closing.
Another object of the present invention is to provide a kind of suction valve assembly of reciprocal compressor, this assembly can strengthen the responsiveness of suction valve according to on/off operation by preventing that suction valve from exceedingly being opened.
Another purpose of the present invention is to provide a kind of suction valve assembly of reciprocal compressor, and this assembly can be reduced to minimum and improves compression efficiency by being present in dead volume in the compression chamber, and fluid is compressed in this compression chamber.
For the advantage that realizes these and other and according to purpose of the present invention, as this enforcement with broad description, a kind of suction valve assembly of reciprocal compressor is provided, it comprises: the valve support, this valve support inserts and is fixed on the valve mounting portion that is formed on the piston, and having at least one suction hole, the fluid that is directed to piston suction path supplies to the compression chamber of cylinder by this suction hole; And suction valve, this suction valve is arranged on the valve support, can rotate within the specific limits, is used to open and close the suction hole that is formed at the valve support.
The valve support forms plate-like, and its circular surface is fixed in the valve mounting portion, and the valve support has pin-and-hole, is inserted with hinge pin in this pin-and-hole, so that suction valve can connect in hinged mode.At least one inhales the side on the pin-and-hole baseline that hole is formed at the valve support, and is used for by stopping that the stops that suction valve prevents that suction valve from opening above certain limit is formed at opposite side.
Suction valve has disc-shape, and the heart has groove therein, and hinge pin inserts this groove.Suction valve has the ON/OFF part that is formed at a side on the alveolobasilar line, and this groove is used to open and close the suction hole of valve support, and suction valve also has the stop portion that is formed at opposite side on the alveolobasilar line, is stopped by the stops of valve support.
According to for following detailed description of the present invention and with reference to the accompanying drawings, above-mentioned purpose, characteristic, aspect and the advantage with other of the present invention will become more obvious.
Description of drawings
For providing for better understanding of the present invention, accompanying drawing is incorporated into and forms the part of this specification, these description of drawings embodiments of the invention and be used from specification one and explain principle of the present invention.
In the accompanying drawings:
Fig. 1 is the sectional view according to the reciprocal compressor of prior art;
Fig. 2 is the perspective exploded view according to the suction valve of prior art;
Fig. 3 and Fig. 4 are the sectional view that shows according to the working state of the suction valve of prior art;
Fig. 5 is the sectional view according to reciprocal compressor of the present invention;
Fig. 6 is the perspective exploded view according to suction valve of the present invention; And
Fig. 7 and Fig. 8 are the sectional view that shows according to the working state of suction valve assembly of the present invention.
Embodiment
Below will be at length with reference to the preferred embodiments of the present invention, its example illustrates in the accompanying drawings.
An embodiment according to the suction valve assembly of reciprocal compressor of the present invention is described below with reference to the accompanying drawings.
Although the suction valve assembly according to reciprocal compressor of the present invention has a plurality of preferred embodiments, below most preferred embodiment will be described.
Fig. 5 is the sectional view according to reciprocal compressor of the present invention.
Reciprocal compressor according to the present invention comprises: casing 6, and this casing has certain enclosed space, and is connected with the discharge pipe 4 that is used to aspirate the suction pipe 2 of fluid and is used to discharge compressed fluid; Reciprocating motor 8, this motor is arranged in the casing 6, is used for producing when connecting power supply reciprocating force; Compression unit 10, this compression unit are used for by receiving the compressed fluid by the reciprocating force of reciprocating motor 8 generations; And framework 12,14 and 16, these frameworks are used to support reciprocating motor 8 and compression unit 10.
Reciprocating motor 8 comprises: external stator 18, and this external stator has cylinder form, and is twined wherein by coil 22; Inner stator 20, this inner stator are arranged at the inner circumferential surface of external stator 18 with certain air clearance; And magnet 24, but this magnet to-and-fro motion be arranged in the air clearance between external stator 18 and the inner stator 20.
First resonant springs 48 and second resonant springs 50 are arranged between the side surface and framework 12 of magnet holder 26 respectively, and between the opposite side of magnet holder 26 surface and the framework 16, thereby cause the harmonic moving of piston 30.
As shown in Figure 6, suction valve assembly 38 comprises: valve support 60, and this valve support inserts and is fixed on the valve mounting portion 52 that is formed on the piston 30, and has at least one suction hole 54, by this hole, the fluid that is directed to the suction path 51 of piston 30 is fed into the compression chamber 32 of cylinder 34; And suction valve 70, this valve is arranged on the valve support 60, can rotate within the specific limits, is formed at the suction hole 54 of valve support 60 with opening and closing.
The stops 64 of valve support 60 forms inclined surface, its height mind-set edge step-down from valve support 60.
The groove 72 of suction valve 70 forms rotation when suction valve 70 is opened, and has certain-length, with the vertical linear ground to-and-fro motion along piston 30.The ON/OFF part 74 of suction valve 70 forms has a height that is higher than stop portion 76 height.
The valve mounting portion 52 of piston 30 has locates the valve seat part 82 of inner circumferential surface thereon, and the external peripheral surface of suction valve 70 engages hermetically with valve seat part 82.Valve seat part 82 preferably forms a kind of curved surface form, so that suction valve 70 can rotate.The external peripheral surface of suction valve 70 also forms a kind of curved surface form corresponding to valve seat part 82, so that suction valve 70 can slide by contacting with 82 one-tenth surfaces of valve seat part.
Work according to reciprocal compressor of the present invention will be described below.
Fig. 7 and Fig. 8 are the sectional view that shows according to the working state of suction valve assembly of the present invention.
When reciprocating motor 8 work, magnet 24 to-and-fro motion linearly, the piston 30 that is connected with magnet 24 linearly to-and-fro motion with compressed fluid.
To illustrate in greater detail the operation that is used for compressed fluid below.As shown in Figure 7, when piston 30 was return, suction valve 70 just was imported into the pressure difference that piston 30 sucks between the compression chamber 32 of the fluid of paths 51 and cylinder 34 and opens.That is to say that suction valve 70 is around the rotation of the baseline of the groove 72 that wherein is inserted with hinge pin 80, the ON/OFF part 74 of suction valve 70 is by separate with the suction hole 54 that is formed at valve support 60 along the linear motion of groove 72, thereby opens suction hole 54.Therefore, the fluid of the suction path 51 of piston 30 is supplied to the compression chamber 32 of cylinder 34 by suction hole 54.
At this moment, the stops 64 that the stop portion 76 of suction valve 70 is formed on valve support 60 stops, with the opening angle of restriction suction valve 70, thereby prevents that suction valve 70 from exceedingly opening.
Under this state, as shown in Figure 8, when piston 30 travelled forward, suction valve 70 cut out, thereby and the fluid of compression chamber 32 inside was compressed.And when the pressure in the compression chamber 32 during greater than predetermined pressure, the escape cock 90 of bleed valve assembly 40 is opened, thereby the fluid of compression is discharged into the external world by discharge pipe 4.
The operation of suction valve 70 will be described below.Suction valve 70 is compressed pressure rotation and the motion linearly in the chamber 32, so that the ON/OFF part 74 of suction valve 70 is attached at a side surface 66 in the suction hole 54 that is formed with valve support 60, and, 82 one-tenth surfaces of the external peripheral surface of suction valve 70 and the valve seat part that is formed at piston 30 places contact, thereby hole 54 is inhaled in sealing.
Effect according to reciprocal compressor of the present invention will be described below.
In the suction valve assembly according to reciprocal compressor of the present invention, suction valve rotates around the baseline that hinge pin is inserted in groove wherein, and moves linearly along this groove, thereby opening/closing is inhaled the hole.Therefore, even suction valve is carried out on/off operation continuously, also can avoid owing to distortion and the tired damage that causes, to increase reliability of products.
And, when suction valve is opened, the stops that the stop portion of suction valve is formed on the valve support stops, thereby the opening angle of restriction suction valve, to prevent owing to exceedingly opening the damage that suction valve causes, increased the responsiveness of suction valve, and the noise and the vibration that produce when suction valve worked reduce to minimum.
In addition, form the plane owing to form the suction valve front surface of the part of compression chamber, thereby the dead volume in compression chamber is reduced to minimum.
Because the present invention can implement with some forms that do not deviate from its spirit or inner characteristic, therefore also be to be understood that, unless otherwise indicated, the foregoing description is not limited to the details of any above-mentioned explanation, and should in its spirit and scope by the claims definition, be explained widely, and therefore, all fall into the border of claim and restriction or these borders and restriction equivalent change and revise all thereby be contained in claims.
Claims (10)
1. the suction valve assembly of a reciprocal compressor, it comprises:
The valve support, it inserts and is fixed on the valve mounting portion that is formed on the piston, and is provided with at least one suction hole, and the fluid that is directed into piston suction path is fed into the compression chamber of cylinder by this hole; With
Suction valve, this valve is installed on the valve support, so that can rotate in certain scope, is formed at suction hole on the valve support with opening and closing.
2. according to the suction valve assembly of claim 1, it is characterized in that the valve support forms plate-like, its external peripheral surface is fixed in the valve mounting portion, and the valve support is provided with the pin-and-hole that is used to insert hinge pin, so that suction valve can be hinged.
3. according to the suction valve assembly of claim 2, it is characterized in that the valve support is provided with the suction hole that at least one is formed at pin-and-hole baseline one side, and being provided with the stops that is formed at opposite side, this stops is used for by stopping that suction valve prevents that suction valve from opening above certain limit.
4. according to the suction valve assembly of claim 3, it is characterized in that stops forms and has certain inclined surface, its height its edge of mind-set from the valve support reduces.
5. according to the suction valve assembly of claim 2, it is characterized in that suction valve has disc-shape, and the heart has the groove that is used to insert hinge pin therein.
6. according to the suction valve assembly of claim 5, it is characterized in that groove has the certain distance that hinge pin can sliding movement, so that suction valve can move within the specific limits linearly.
7. according to the suction valve assembly of claim 5, it is characterized in that suction valve is provided with the ON/OFF part that is formed at pin-and-hole baseline one side, this ON/OFF partly is used to open and close the suction hole of valve support, and is formed with stop portion at opposite side, and this stop portion is stopped by the stops of valve support.
8. according to the suction valve assembly of claim 7, it is characterized in that the ON/OFF of suction valve partly forms the height that has greater than the stop portion height.
9. according to the suction valve assembly of claim 5, the valve mounting portion that it is characterized in that piston inner circumferential surface thereon is provided with valve seat part, and the external peripheral surface of suction valve is attached at valve seat part hermetically.
10. according to the suction valve assembly of claim 9, it is characterized in that valve seat part forms the curved surface form, so that suction valve can rotate, and the external peripheral surface of suction valve also forms the curved surface form corresponding to valve seat part, slides so that suction valve can be attached at the surface of valve seat part.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR10-2003-0013479A KR100480136B1 (en) | 2003-03-04 | 2003-03-04 | Apparatus of suction valve for liner compressor |
| KR13479/2003 | 2003-03-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1538063A true CN1538063A (en) | 2004-10-20 |
Family
ID=32906593
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2004100074622A Pending CN1538063A (en) | 2003-03-04 | 2004-03-04 | Suction valve assembly of reciprocating compressor |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20040228746A1 (en) |
| JP (1) | JP4689964B2 (en) |
| KR (1) | KR100480136B1 (en) |
| CN (1) | CN1538063A (en) |
| DE (1) | DE102004010070B4 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979137A (en) * | 2016-01-19 | 2017-07-25 | Lg电子株式会社 | Linearkompressor |
| CN110273875A (en) * | 2019-05-30 | 2019-09-24 | 武汉船用机械有限责任公司 | It is automatically replenished the one-way valve piston of fluid |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR100531827B1 (en) * | 2003-12-17 | 2005-12-02 | 엘지전자 주식회사 | Suction valve assembly for reciprocating compressor |
| DE102004055924B4 (en) * | 2004-11-19 | 2011-08-18 | Lg Electronics Inc., Seoul | Linear compressor, has magnet frame transmitting linear movement of magnet to piston, and cooling pipe disposed in contact with bobbin, where cooling fluid supply unit supplies cooling fluid into pipe |
| EP1785625A3 (en) * | 2005-11-10 | 2009-11-25 | LG Electronics Inc. | Linear Compressor |
| US11885325B2 (en) | 2020-11-12 | 2024-01-30 | Haier Us Appliance Solutions, Inc. | Valve assembly for a reciprocating compressor |
Family Cites Families (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US1248118A (en) * | 1916-10-26 | 1917-11-27 | Henry F Hoffman | Reciprocating pump. |
| US1578880A (en) * | 1924-04-30 | 1926-03-30 | Copeland Products Inc | Compressor |
| FR1242387A (en) * | 1959-08-21 | 1960-09-30 | Pennel & Flipo Ets | Double-acting pump, especially for inflating pneumatic articles |
| US3953898A (en) * | 1975-06-06 | 1976-05-04 | Eric Bloch | Prosthetic one-way heart valve |
| JPS60146972A (en) * | 1984-01-11 | 1985-08-02 | Matsushita Refrig Co | Check valve contained in pipe |
| JPS6431267A (en) * | 1987-07-27 | 1989-02-01 | Bita Kk | Medical charge payment system by card |
| US4813481A (en) * | 1987-08-27 | 1989-03-21 | Otis Engineering Corporation | Expendable flapper valve |
| US4850059A (en) * | 1988-05-17 | 1989-07-25 | Jim Dickerson Plumbing, Inc. | Apparatus for preventing backing up of sewage in a building |
| JPH0810016Y2 (en) * | 1990-06-30 | 1996-03-27 | オーエム工業株式会社 | Fuel tank backflow prevention device |
| US5364244A (en) * | 1993-08-26 | 1994-11-15 | Carr-Griff, Inc. | Pump arrangement including flag type inlet valves with spherical seating |
| JP3853122B2 (en) * | 1999-11-30 | 2006-12-06 | 株式会社パイオラックス | Oil pipe backflow prevention device |
| DE10190607B4 (en) * | 2000-02-17 | 2007-12-06 | Lg Electronics Inc. | Gas valve has piston with through holes having detachable coupling portion extending from cone portion |
| KR100378818B1 (en) * | 2000-12-01 | 2003-04-07 | 엘지전자 주식회사 | Apparatus for fixing suction valve of compressor |
-
2003
- 2003-03-04 KR KR10-2003-0013479A patent/KR100480136B1/en not_active IP Right Cessation
-
2004
- 2004-03-02 DE DE102004010070A patent/DE102004010070B4/en not_active Expired - Fee Related
- 2004-03-03 US US10/790,727 patent/US20040228746A1/en not_active Abandoned
- 2004-03-04 JP JP2004060730A patent/JP4689964B2/en not_active Expired - Fee Related
- 2004-03-04 CN CNA2004100074622A patent/CN1538063A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106979137A (en) * | 2016-01-19 | 2017-07-25 | Lg电子株式会社 | Linearkompressor |
| US10400757B2 (en) | 2016-01-19 | 2019-09-03 | Lg Electronics Inc. | Linear compressor |
| CN106979137B (en) * | 2016-01-19 | 2019-11-22 | Lg电子株式会社 | Linearkompressor |
| CN110273875A (en) * | 2019-05-30 | 2019-09-24 | 武汉船用机械有限责任公司 | It is automatically replenished the one-way valve piston of fluid |
| CN110273875B (en) * | 2019-05-30 | 2021-06-01 | 武汉船用机械有限责任公司 | One-way valve piston capable of automatically supplementing fluid |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102004010070B4 (en) | 2007-09-06 |
| DE102004010070A1 (en) | 2004-09-23 |
| JP2004270698A (en) | 2004-09-30 |
| KR100480136B1 (en) | 2005-04-07 |
| JP4689964B2 (en) | 2011-06-01 |
| US20040228746A1 (en) | 2004-11-18 |
| KR20040078520A (en) | 2004-09-10 |
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| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C02 | Deemed withdrawal of patent application after publication (patent law 2001) | ||
| WD01 | Invention patent application deemed withdrawn after publication |