CN104895765A - Compressor - Google Patents
Compressor Download PDFInfo
- Publication number
- CN104895765A CN104895765A CN201510092548.8A CN201510092548A CN104895765A CN 104895765 A CN104895765 A CN 104895765A CN 201510092548 A CN201510092548 A CN 201510092548A CN 104895765 A CN104895765 A CN 104895765A
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- CN
- China
- Prior art keywords
- aforementioned
- piston
- inner peripheral
- cylinder
- peripheral surface
- 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.)
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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
- F04B27/00—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders
- F04B27/08—Multi-cylinder pumps specially adapted for elastic fluids and characterised by number or arrangement of cylinders having cylinders coaxial with, or parallel or inclined to, main shaft axis
- F04B27/0873—Component parts, e.g. sealings; Manufacturing or assembly thereof
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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
- 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
- F04B39/02—Lubrication
- F04B39/0284—Constructional details, e.g. reservoirs in the casing
- F04B39/0292—Lubrication of pistons or cylinders
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Compressor (AREA)
Abstract
The compressor has a cylindrical piston. The caste cylinder body has a cylinder wall; the piston is received inside the cylinder chamber; the internal of the housing is provided with a discharge chamber which is combined with the cylinder; the cylinder chamber has an inner circumference which is in sliding contact with the outer circumference part and a bottom which is in opposition with the top of the piston; in the internal of the cylinder chamber, a compression chamber is partitioned by the piston and the circumference. The inner circumference face and the bottom face are the processing faces through cutting, and a groove part is configured between the inner circumference and the bottom. The groove forms a space for containing the lubricant oil.
Description
Technical field
The present invention relates to compressor, particularly relate to the compressor with piston.
Background technique
Carrying out the compressor pressurizeed as the piston against gasses by reciprocating, being known to possess and being formed with the cylinder body of piston at the cylinder thorax of multiple drums of internal round-trip movement, and be formed with the compressor of bonnet of suction chamber and discharge chamber.This compressor is provided with valve plate and pad between cylinder body and bonnet, and cylinder thorax is communicated with suction chamber and discharge chamber via valve plate and pad.But in the structure shown here, number of spare parts increases.In the compressor disclosed in the flat 8-121330 publication of Japanese Laid-Open, be reduced to object with number of spare parts, valve plate and cylinder body are integrated.
In the compressor described in the flat 8-121330 publication of Japanese Laid-Open, the inner peripheral surface of the drum of cylinder thorax is connected with the plane perpendicular being formed with the hole be communicated with discharge chamber.In the shape of this cylinder thorax, the oil in cylinder thorax is not equally distribute on the whole in bottom surface, exists partly partially by the possibility of a part for bottom surface.So the oil existed between the inner peripheral surface being brought into piston and cylinder thorax when piston reciprocates in cylinder thorax can not throughout the worry of the whole circumferential surface of piston.
Summary of the invention
The object of the present invention is to provide a kind of compressor, oil can be made when piston reciprocates in cylinder thorax throughout the whole circumferential surface of piston.
Compressor involved in the present invention possesses: cylindric piston, the cylinder body of casting forming, have cylindric cylinder thorax, aforementioned piston is housed in the inside of cylinder thorax, housing, inside is formed with discharge chamber, is combined with aforementioned cylinder body, aforementioned cylinder thorax possesses the inner peripheral surface with the peripheral part sliding contact of aforementioned piston, and it is opposed with the tip portion of aforementioned piston and form the bottom surface of exhaust port, in the inside of aforementioned cylinder thorax, pressing chamber is separated out by aforementioned piston and aforementioned inner peripheral surface and aforementioned bottom surface, this pressing chamber is communicated with via aforementioned exhaust port with aforementioned discharge chamber, it is characterized in that, aforementioned inner peripheral surface and aforementioned bottom surface are the working surfaces cut out, the groove portion that the circumferencial direction along this bottom surface extends is provided with between aforementioned inner peripheral surface and aforementioned bottom surface, this groove portion forms the space kept the oil that aforementioned piston lubricates.
Accompanying drawing explanation
Fig. 1 is the sectional view of the compressor involved by embodiments of the present invention 1;
Fig. 2 is formed in the sectional view of the cylinder thorax in the cylinder body of Fig. 1;
Fig. 3 A ~ Fig. 3 C is the accompanying drawing of the order for illustration of the cylinder thorax forming Fig. 2;
Fig. 4 is the sectional view of the cylinder thorax of compressor involved by mode of execution 2;
Fig. 5 A ~ Fig. 5 C is the accompanying drawing of the order for illustration of the cylinder thorax forming Fig. 4;
Fig. 6 is the sectional view of the cylinder thorax in the compressor of variation.
Embodiment
Below, based on accompanying drawing, embodiments of the present invention are described.
Mode of execution 1
Fig. 1 represents the sectional view of the compressor 1 involved by embodiments of the present invention 1.The compressor 1 of Fig. 1 is oblique tray type compressor, and this oblique tray type compressor 1 possesses: the cylinder body 3 being formed with multiple cylinder thorax 2, is set as the protecgulum 4 engaged with the front end of cylinder body 3, and is set as the bonnet 5 be connected with the rear end of cylinder body 3.Between cylinder body 3 and bonnet 5, be provided with valve plate 6, valve plate 6 is integrally formed with cylinder body 3.Cylinder body 3 and protecgulum 4 are casting formings.Each cylinder thorax 2 possesses inner peripheral surface 41 and bottom surface 42, has drum.
In crankshaft room 7 in protecgulum 4, live axle 8 can insert in the axis hole 3b of protecgulum 4 and cylinder body 3 rotatably.Live axle 8 is fixed with rotor 9, support arm 10 rearward extends from rotor 9.Elongated hole 10a is formed in the tip portion of support arm 10.Pin 10b can be slidably inserted in elongated hole 10a, pin 10b can be linked with swash plate 13 with fascinating.
Be adjacent to be provided with sleeve 11 around live axle 8 with the rear end of rotor 9, sleeve 11 is exerted a force towards rotor 9 by helical spring 12 all the time.Pivot 11a extends from the both sides of sleeve 11 along the direction orthogonal relative to the axial direction of this sleeve 11, and pivot 11a inserts in the not shown card complex hole of swash plate 13, allows swash plate 13 pivotally 11a swing.Be supported with wobble plate 14 in the rear surface of swash plate 13 via thrust-bearing etc., wobble plate 14 is by not shown breach restriction rotation.Wobble plate 14 is linked with multiple connecting rod 15, and the piston 16 of the cylindrical shape that each connecting rod 15 inserts with the inside to each cylinder thorax 2 links.As described later, the inner peripheral surface 41 of each cylinder thorax 2 is cut, can with complete cycle scope and piston 16 sliding contact.
The rotary motion of live axle 8 converts via the swing to the fore-and-aft direction of wobble plate 14 of rotor 9 and swash plate 13, and each piston 16 reciprocates in each cylinder thorax 2.And then the stroke of piston 16 and wobble plate 14 change with the pressure difference of the pressure in crankshaft room 7 and suction pressure accordingly relative to the angle of live axle 8.Pressing chamber 24 is separated out by the inner peripheral surface 41 of each cylinder thorax 2 and bottom surface 42 and piston 16.
Bonnet 5 is provided with to end face opening thereafter and the suction chamber 17 be communicated with the axis hole 3b of cylinder body 3, around the suction chamber 17 on bonnet 5, is formed with the discharge chamber 18 of ring-type.The valve plate 6 integrally formed with cylinder body 3 is formed the exhaust port 19 be communicated with each pressing chamber 24, in discharge chamber 18, is provided with expulsion valve 20 and baffle plate 21 opposedly with each exhaust port 19.Discharge chamber 18 can be communicated with corresponding exhaust port 19 by the valve opening of each expulsion valve 20.
Cylinder body 3 is formed the access 22 being communicated with each pressing chamber 24 and axis hole 3b, in axis hole 3b, is inserted with cylindric rotary valve 30.Rotary valve 30 has mouthpiece 23 in the end adjacent with live axle 8, is combined with the inner 8a of live axle 8 via mouthpiece 23.Rotary valve 30 possesses the suction passage 32 making each access 22 be communicated with suction chamber 17 successively accordingly with the rotation of live axle 8.
As shown in Figure 2, cylinder thorax 2 possesses the inner peripheral surface 41 of drum, and the bottom surface 42 of the circle be made up of a part for the front surface of valve plate 6.Bottom surface 42 is formed the opening 19a of exhaust port 19.The circular groove portion 63 that the circumferencial direction along bottom surface 42 extends is provided with between the inner peripheral surface 41 and bottom surface 42 of cylinder thorax 2.Groove portion 63 is the processing grooves formed by cutting, recessed from bottom surface 42 towards the side contrary with piston 16.This groove portion 63 is formed by the space 64 expanded in pressing chamber.Groove portion 63 has the darkest part 63a, the outer circumference face 63b of the cylindrical shape of the darkest part 63a is extended to continuously with inner peripheral surface 41, and with along with close to the radially inner side of cylinder thorax 2, the mode of depth shallower extends to the trapezoidal inside circumference face 63c of the circular cone of bottom surface 42 from the darkest part 63a.For the ease of understanding, depict groove portion 63 turgidly in fig. 2, but the roughly not enough tens of μm of m of the actual grade in groove portion 63.
Piston 16 possesses the peripheral part 5 with the drum of inner peripheral surface 41 sliding contact of cylinder thorax 2, the top 52 opposed with the bottom surface 42 of cylinder thorax 2, and connects the chamfered section 53 at peripheral part 51 and top 52.Top 52 and chamfered section 53 constitute the tip portion of piston 16.When top 52 is closest to bottom surface 42, when namely piston 16 is in upper dead center position, the tip portion of the piston 16 opposed with bottom surface 42 can not with inner peripheral surface 41 sliding contact in the face of groove portion 63.Now, chamfered section 53 is opposed with groove portion 63.Even if when top 52 is closest to bottom surface 42, also form very little gap between.
When oblique tray type compressor 1 work, when each piston 16 reciprocates in each cylinder thorax 2, the oil be present in cylinder thorax 2 is brought between the inner peripheral surface 41 of piston 16 and cylinder thorax 2, lubricates piston 16.The oil be present in cylinder thorax 2 is trapped in groove portion 63.Namely, groove portion 63 can keep oil.Because groove portion 63 extends, so the complete cycle scope of oil in bottom surface 42 is detained along the circumferencial direction of bottom surface 42 in its complete cycle scope.So the oil between the inner peripheral surface 41 being brought into piston 16 and cylinder thorax 2 from groove portion 63 is throughout the whole circumferential surface of piston 16, the whole circumferential surface of piston 16 and with the inner peripheral surface 41 of the cylinder thorax 2 of piston 16 sliding contact by this oil lubrication.
Then, based on Fig. 3 A ~ Fig. 3 C, the method forming cylinder thorax 2 in the compressor 1 involved by mode of execution 1 in cylinder body 3 is described.
As shown in Figure 3A, when casting forming goes out cylinder body 3, form the cylinder hole 2 ' of the prototype as cylinder thorax 2.The inner peripheral surface 41 ' of cylinder hole 2 ' and bottom surface 42 ' are the casting surface of the state formed by casting forming respectively.
Then with not shown cutting tool, cutting is carried out to inner peripheral surface 41 '.Now, preferably by use, there is the top connected with bottom surface 42 ' and such as can reduce the top of cutting tool and the area of contact of bottom surface 42 ' as much as possible for the cutting tool of leg-of-mutton sectional shape.While the such cutting tool of use carries out cutting to inner peripheral surface 41 ', the circumferencial direction along bottom surface 42 ' carries out cutting between inner peripheral surface 41 ' and bottom surface 42 '.Its result, as shown in Figure 5 B, as forming the recessed circular groove portion 63 extended along the circumferencial direction of bottom surface 42 ' between the inner peripheral surface 41 of working surface and the bottom surface 42 ' as casting surface.By using the cutting tool with the top of leg-of-mutton sectional shape, form the darkest part 63a in groove portion 63, outside circumference 63b, and inside circumference 63c.Finally, by carrying out cutting to bottom surface 42 ', as shown in Figure 3 C, obtain the bottom surface 42 as working surface, form cylinder thorax 2.Due to the top of cutting tool and the area of contact of bottom surface 42 ' little, even if so form groove portion 63 while carrying out cutting to inner peripheral surface 41 ', the vibration of cutting tool also can be suppressed, suppress the deterioration of the machining accuracy of cylinder thorax internal diameter.
Like this, owing to being trapped in the groove portion 63 that the circumferencial direction along bottom surface 42 extends by oil, oil is trapped in the complete cycle scope of bottom surface 42, so when piston 16 reciprocates in cylinder thorax 2, can make the oily whole circumferential surface throughout piston 16.
In addition, owing to being formed the space 64 of expansion in cylinder thorax 2 by groove portion 63, so the dead volume of pressing chamber 24 when piston 16 arrives upper dead center only increases the amount of the volume in space 64.But, because bottom surface 42 is the working surfaces formed by cutting, so the surface roughness of bottom surface 42 can be reduced, improve the precision of top clearance, make piston 16 closer to bottom surface 42.Therefore, it is possible to the dead volume of pressing chamber 24 when piston 16 being arrived upper dead center sets smaller, suppress the reduction of volumetric efficiency.
Preferably in 1, groove portion 63 has the darkest part 63a, the outside circumference 63b of the cylindrical shape of the darkest part 63a is extended to continuously with inner peripheral surface 41, and with along with the mode of depth shallower extends to the trapezoidal inside circumference 63c of the circular cone of bottom surface 42 from the darkest part 63a close to the radially inner side of cylinder thorax 2, but be not limited in which.Groove portion also can have the darkest part, extend to the trapezoidal outside circumference of the circular cone of the darkest part in the mode that the degree of depth deepens along with the radially inner side close to cylinder thorax 2 from inner peripheral surface 41, and extend to the inside circumference of cylindrical shape of bottom surface 42 from the darkest part with inner peripheral surface 41 abreast.In addition, as long as can work as the vibration suppressing cutting tool while cutting inner peripheral surface 41 when formation groove portion 63, then the shape in groove portion is any shape.
Mode of execution 2
Then the structure of the compressor 1 involved by embodiments of the present invention 2 is represented.In mode of execution 2, because the reference character identical with the reference character involved by the mode of execution 1 shown in Fig. 1 ~ Fig. 3 C is identical or same structural element, so omit its detailed description.
Compressor 1 involved by embodiments of the present invention 2 changes the mode of the processing groove that the circumferencial direction along bottom surface 42 extends relative to the compressor 1 involved by mode of execution 1.As shown in Figure 4, between the inner peripheral surface 41 and bottom surface 42 of cylinder thorax 2, process the circular groove portion 73 that the circumferencial direction along bottom surface 42 extends, groove portion 73 is recessed into from inner peripheral surface 41 towards the radial outside of cylinder thorax 2.Formed the space 74 of expansion by groove portion 73 in cylinder thorax 2.Other structure is identical with mode of execution 1.
Preferably in 2, oil is trapped in the groove portion 73 recessed towards the radial outside of cylinder thorax 2 from inner peripheral surface 41.Namely, groove portion 73 can keep oil.Because groove portion 73 extends, so oil is trapped in the complete cycle scope of bottom surface 42 along the circumferencial direction of bottom surface 42 in its complete cycle scope.So the oil between the inner peripheral surface 41 being brought into piston 16 and cylinder thorax 2 from groove portion 73 is throughout the whole circumferential surface of piston 16, the whole circumferential surface of piston 16 and lubricated with the inner peripheral surface 41 of the cylinder thorax 2 of piston 16 sliding contact.
Then, based on Fig. 5 A ~ Fig. 5 C, the method forming cylinder thorax 2 in the compressor 1 involved by mode of execution 2 in cylinder body 3 is described.
As shown in Figure 5A, identical with mode of execution 1 to the order that casting forming goes out to have the cylinder body 3 of the cylinder hole 2 ' of the prototype as cylinder thorax 2.Therefore, the inner peripheral surface 41 ' of cylinder hole 2 ' and bottom surface 42 ' are the casting surface of the state formed by casting forming respectively.
Then as shown in Figure 5 B, with not shown cutting tool, formed towards the recessed groove portion 73 of the radial outside of cylinder thorax 2 near inner peripheral surface 41 ' with the attachment portion of bottom surface 42 '.Now, while formation groove portion 73, bottom surface 42 ' is cut processing, forms the bottom surface 42 as working surface.Finally, cutting is carried out to inner peripheral surface 41 ', as shown in Figure 5 C, obtain the inner peripheral surface 41 as working surface, form cylinder thorax 2.Because the cutting of inner peripheral surface 41 is only being carried out than top side, groove portion 7, so when carrying out cutting to inner peripheral surface 41, can not cut bottom surface 42, the vibration of cutting tool during cutting is suppressed, and can suppress the deterioration of the machining accuracy of the internal diameter of cylinder thorax 2.
Owing to being trapped in the groove portion 73 that the circumferencial direction along bottom surface 42 extends by oil, oil is trapped in the complete cycle scope of bottom surface 42, so when piston 16 reciprocates in cylinder thorax 2, can make the oily whole circumferential surface throughout piston 16.
In addition, the dead volume of the pressing chamber 24 when arriving upper dead center about piston 16, according to the reason identical with mode of execution 1, can set less by dead volume, suppresses the reduction of volumetric efficiency.
In mode of execution 1 and 2, oblique tray type compressor 1 is illustrated, but is not limited in oblique tray type compressor.As long as the compressor being reciprocated by piston and compress gas, then the compressor of which kind of type.
In mode of execution 1 and 2, oblique tray type compressor 1 is connected piston 16 and swash plate 13 by connecting rod 15 with wobble plate 14, but also can replace connecting rod 15 and connect piston 16 and swash plate 13 by crawler shoe.
In mode of execution 1, groove portion 63 is recessed from bottom surface 42 towards the side contrary with piston 16, and in mode of execution 2, groove portion 73 is recessed into from inner peripheral surface 41 towards the radial outside of cylinder thorax 2, but is not limited in these modes.Such as also can as shown in Figure 6, groove portion 83 is formed as extending obliquely relative to the depth direction of cylinder thorax 2, is recessed into towards the radial outside of cylinder thorax 2 from bottom surface 42 towards the side contrary with piston 16 and from inner peripheral surface 41.
Claims (3)
1. a compressor, possesses: cylindric piston; The cylinder body of casting forming, have cylindric cylinder thorax, aforementioned piston is housed in the inside of cylinder thorax; Housing, inside is formed with discharge chamber, is combined with aforementioned cylinder body; Aforementioned cylinder thorax possesses the inner peripheral surface with the peripheral part sliding contact of aforementioned piston, and it is opposed with the tip portion of aforementioned piston and form the bottom surface of exhaust port, in the inside of aforementioned cylinder thorax, pressing chamber is separated out by aforementioned piston and aforementioned inner peripheral surface and aforementioned bottom surface, this pressing chamber is communicated with via aforementioned exhaust port with aforementioned discharge chamber, it is characterized in that
Aforementioned inner peripheral surface and aforementioned bottom surface are the working surfaces cut out,
Between aforementioned inner peripheral surface and aforementioned bottom surface, be provided with the groove portion that the circumferencial direction along this bottom surface extends, this groove portion forms the space kept the oil that aforementioned piston lubricates.
2. compressor as claimed in claim 1, is characterized in that, aforementioned grooves portion is recessed from aforementioned bottom surface towards the side contrary with aforementioned piston.
3. compressor as claimed in claim 1, is characterized in that, aforementioned grooves portion is recessed into from aforementioned inner peripheral surface towards the radial outside of aforementioned cylinder thorax.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2014041501A JP2015166580A (en) | 2014-03-04 | 2014-03-04 | compressor |
| JP2014-041501 | 2014-03-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104895765A true CN104895765A (en) | 2015-09-09 |
Family
ID=54028653
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510092548.8A Pending CN104895765A (en) | 2014-03-04 | 2015-03-02 | Compressor |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP2015166580A (en) |
| KR (1) | KR20150104040A (en) |
| CN (1) | CN104895765A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873039A (en) * | 2018-08-29 | 2020-03-10 | 日立环球生活方案株式会社 | Compressor and equipment with same |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR102080625B1 (en) * | 2017-03-15 | 2020-02-25 | 한온시스템 주식회사 | Swash plate compressor |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5772406A (en) * | 1994-03-18 | 1998-06-30 | Sanden Corporation | Piston-type compressor with a lubricating system |
| US20020127117A1 (en) * | 1999-08-12 | 2002-09-12 | Toshiro Fujii | Reciprocating compressor and method for lubricating the reciprocating compressor |
| KR20090041715A (en) * | 2007-10-24 | 2009-04-29 | 엘지전자 주식회사 | Linear compressor |
| CN202157935U (en) * | 2011-07-25 | 2012-03-07 | 北京普发兴业动力科技发展有限责任公司 | Lubrication device of compressors |
| CN102812243A (en) * | 2010-03-31 | 2012-12-05 | 川崎重工业株式会社 | Valve plate, and axial piston hydraulic pump and axial piston hydraulic motor with same |
-
2014
- 2014-03-04 JP JP2014041501A patent/JP2015166580A/en active Pending
-
2015
- 2015-03-02 KR KR1020150029016A patent/KR20150104040A/en not_active Application Discontinuation
- 2015-03-02 CN CN201510092548.8A patent/CN104895765A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5772406A (en) * | 1994-03-18 | 1998-06-30 | Sanden Corporation | Piston-type compressor with a lubricating system |
| US20020127117A1 (en) * | 1999-08-12 | 2002-09-12 | Toshiro Fujii | Reciprocating compressor and method for lubricating the reciprocating compressor |
| KR20090041715A (en) * | 2007-10-24 | 2009-04-29 | 엘지전자 주식회사 | Linear compressor |
| CN102812243A (en) * | 2010-03-31 | 2012-12-05 | 川崎重工业株式会社 | Valve plate, and axial piston hydraulic pump and axial piston hydraulic motor with same |
| CN202157935U (en) * | 2011-07-25 | 2012-03-07 | 北京普发兴业动力科技发展有限责任公司 | Lubrication device of compressors |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873039A (en) * | 2018-08-29 | 2020-03-10 | 日立环球生活方案株式会社 | Compressor and equipment with same |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2015166580A (en) | 2015-09-24 |
| KR20150104040A (en) | 2015-09-14 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20150909 |
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| WD01 | Invention patent application deemed withdrawn after publication |