CN201190646Y - Integral gas compressor - Google Patents
Integral gas compressor Download PDFInfo
- Publication number
- CN201190646Y CN201190646Y CNU2008201111872U CN200820111187U CN201190646Y CN 201190646 Y CN201190646 Y CN 201190646Y CN U2008201111872 U CNU2008201111872 U CN U2008201111872U CN 200820111187 U CN200820111187 U CN 200820111187U CN 201190646 Y CN201190646 Y CN 201190646Y
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- gas
- casing housing
- integral type
- cylinder
- gas compressor
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- 230000007246 mechanism Effects 0.000 claims abstract description 13
- 230000033001 locomotion Effects 0.000 claims description 4
- 230000006835 compression Effects 0.000 abstract description 8
- 238000007906 compression Methods 0.000 abstract description 8
- 230000005540 biological transmission Effects 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 71
- 238000011144 upstream manufacturing Methods 0.000 description 9
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 7
- 239000001301 oxygen Substances 0.000 description 7
- 229910052760 oxygen Inorganic materials 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 230000003321 amplification Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 3
- 238000000429 assembly Methods 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 238000003199 nucleic acid amplification method Methods 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 230000032258 transport Effects 0.000 description 2
- 239000000470 constituent Substances 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 208000002925 dental caries Diseases 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000000465 moulding Methods 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
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Abstract
The utility model relates to an integrated gas compressor which comprises a cylinder integrated member with a plurality of adjacent cylinder cavities, each of which is provided with a piston inside. The integrated gas compressor also comprises a transmission mechanism connected with the pistons, and cylinder covers matched with cylinders; each of the cylinder covers comprises a gas inlet and a gas outlet for gas compression. The inner sides of the cylinder covers also comprise a plurality of gas passages connected with the cylinders so as to ensure that the gas flows between the gas inlet and the gas outlet in one direction. The cylinders are orderly arranged along the direction from the gas inlet to the gas outlet according to the order from the large capacity to the small capacity, so the gas flowing inside from the gas inlet is sequentially compressed by the cylinders with different capacities and then the gas with high concentration is output. The compressor has small volume and is suitable to be used in narrow spaces and particularly to be used in families.
Description
Technical field
The utility model relates to a kind of air pump device, specifically a kind of integral type gas compressor.
Background technique
Compressed oxygen has a lot of important medical purposes, can provide than more oxygen in the physical environment on every side to the patient.And to obtain the oxygen of such high concentration, gas compressor is absolutely necessary.Existing gas compressor is to be made of a plurality of independent cylinders mostly, this each cylinder is provided with separately, can increase a plurality of connected elements, also need sealed member, and the gas compressor integral rigidity of this structure is poor, and a plurality of links and so cause the compressor integrity poor, its complicated structure also is not easy to the technician and grasps; And the above-mentioned a plurality of cylinder multi-part that causes of the independent structures difficulty and cost that can increase production naturally, use separately; Multi-part also brings the floor space of compressor integral body big, is not suitable for using at narrow space; Particularly be not suitable for the use of general family, for example the patient of family's long-term bed is carried out health care or patient goes out to carry the high pressure oxygen container, and need constantly in high-pressure bottle, to charge into oxygen, traditional compressor is not suitable for carrying and using because volume and mass ratio are big, complex structure very much.
The model utility content
For this reason, technical problem to be solved in the utility model is to provide that a kind of volume is little, good integrity, is particularly suitable for the integral type gas compressor that general family uses.
For solving the problems of the technologies described above, the technological scheme of employing of the present utility model is as follows: a kind of integral type gas compressor comprises:
Form the cylinder single piece of a plurality of casing housings, be provided with piston in each described casing housing;
The cylinder head that cooperates with described cylinder single piece;
And the driving mechanism that drives described piston motion;
Form gas single channel in the described cylinder head, be provided with a plurality of one-way valves of control gaseous flow direction in the described gas single channel with gas access and gas outlet.
The volume of a plurality of described casing housings reduces gradually along gas flow direction.
Described one-way valve comprises:
One in described gas access with have between inlet one-way valve from the casing housing of maximum volume to the unidirectional conducting of described maximum volume casing housing;
Between the described casing housing that adjoins between the cylinder of the unidirectional conducting of casing housing of less volume one-way valve;
One at the outlet one-way valve that has between minimum volume casing housing and the gas outlet to the unidirectional conducting of described gas outlet.
Described one-way valve is fixed in the described air-flow single channel by the valve fixed block.
Described valve fixed block forms the central cavity that connects along described air-flow single channel direction, and is communicated with the cavity that is connected of described central cavity and casing housing.
Described valve fixed block one side forms along the groove of described air-flow single channel direction, and is communicated with the cavity that is connected of described groove and casing housing.
Described cylinder single piece comprises four casing housings.
Described driving mechanism comprises a bent axle and is connected guide rod between the described crankshaft and piston.
Described bent axle comprises a main shaft and a plurality of eccentric that is installed on the described main shaft.
All form corresponding keyway on described main shaft and the eccentric.
Technique scheme of the present utility model has following advantage compared to existing technology:
1, casing housing takes shape in the design on the cylinder, adds cylinder head close-fitting with it and driving mechanism, makes compressor arrangement simple, is convenient to common skill personnel understanding and grasp;
2, integrated structure is saved a lot of connected elements, and is simple in structure, and good integrity is easy to make difficult the leakage;
3, the integral type design volume small footprint size that takes shape on the cylinder single piece of compressor of casing housing is little, be easy to produce, transport and use, the more important thing is that the little compressor of this volume extremely is suitable for using at narrow space, therefore be particularly suitable for the use of general family.
Description of drawings
For the easier quilt of content of the present utility model is clearly understood, according to specific embodiment of the utility model also in conjunction with the accompanying drawings, the utility model is described in further detail, wherein below
Fig. 1 is the front view of a compressor of the utility model;
Fig. 2 is the sectional drawing of compressor shown in Figure 1;
Fig. 3 is the amplification profile that constitutes the cylinder head assemblies assembling condition of compressor shown in Figure 1;
Fig. 4 is the amplification profile of compressor crank shaft.
Embodiment
Below in conjunction with drawings and Examples the utility model is done concrete description, from describe and accompanying drawing can better know from experience the utility model simple in structure, easily by common technical ability personnel's understanding with and user cost is low, floor space is little, the advantage of good integrity.
Compressor of the present utility model comprises three parts: cylinder single piece, cylinder head and driving mechanism, and fixedly connected between them by conventional mode.
Compressor with four casing housings is an example below, and the technical solution of the utility model is specifically described.
As shown in Figure 1, gas compressor of the present utility model comprises cylinder single piece 20, cylinder head 10 and driving mechanism 30, pass the screw rod of cylinder single piece 20, driving mechanism 30 vertically downward successively by upper surface between them and the screw that is mated is fixed, make the stiff member that compressor becomes one from cylinder head 10.Wherein for the ease of introducing, cylinder single piece 20 is divided into top cylinder single piece 21 and bottom cylinder single piece 22 is introduced respectively herein.Countercylinder single piece 20, cylinder head 10 and driving mechanism 30 are introduced respectively below:
At first, the introduction of countercylinder single piece 20, shown in Fig. 1 to 3, top cylinder single piece forms four casing housings for 21 li, is respectively: the first casing housing 210a, the second casing housing 210b, the 3rd casing housing 210c, the 4th casing housing 210d.All be provided with a piston at each casing housing, as shown in Figure 2, the first casing housing 210a is provided with first piston 220a, is provided with in the second casing housing 210b in the second piston 220b, the 3rd casing housing 210c and is provided with the 3rd piston 220c, the 4th casing housing 210d is provided with the 4th piston 220d.As shown in the figure, the diameter of casing housing has nothing in common with each other, they are arranged in turn according to diameter is descending, also be that described casing housing is arranged to the gas outlet direction along the gas access in turn according to the descending order of volume, what need not to specify is that each casing housing is to equate respectively with the diameter that is positioned at its piston.
Casing housing takes shape in the cylinder single piece 20, this integrative-structure, and overall performance is good, and by a plurality of connected elements of minimizing, and make that the compressor overall structure is simpler, be convenient to technician's understanding and grasp; Save connected element simultaneously and correspondingly can significantly reduce the cost of producing and using; Integrative-structure makes that also parts are few, and the floor space of compressor is corresponding dwindles, and is convenient to produce, stores and transportation.
Casing housing with different-diameter in the present embodiment is an example; in other embodiment, also can adopt different strokes to produce the casing housing of different capabilities; can realize the purpose of this utility model, belong to protection domain of the present utility model as long as the capacity of the casing housing of arranging in turn reduces to make gas to compress step by step successively.
The lower surface of top cylinder single piece 21 is connected with the upper surface of bottom cylinder single piece 22, forms four guiding cavitys of the corresponding first casing housing 210a, the second casing housing 210b, the 3rd casing housing 210c, the 4th casing housing 210d respectively on the bottom cylinder single piece 22: the first guiding cavity 230a, the second guiding cavity 230b, the 3rd guiding cavity 230c, the 4th guiding cavity 230d.Four guide rods of driving mechanism 30 lay respectively in the above-mentioned guiding cavity, and promptly the first guide rod 320a is arranged in the first guiding cavity 230a, the second guide rod 320b and is arranged in the second guiding cavity 230b, the 3rd guide rod 320c and is arranged in the 3rd guiding cavity 230c, the 4th guide rod 320d and is positioned at the 4th guiding cavity 230d.The fixedly connected corresponding piston of each guide rod, the first guide rod 320a links to each other with first piston 220a and drives first piston 220a 210a motion in first casing housing, the second guide rod 320b links to each other with the second piston 220b and drives it and move in the second casing housing 210b, the 3rd guide rod 320c links to each other with the 3rd piston 220c and drives it and move in the 3rd casing housing 210c, the 4th guide rod 320d link to each other with the 4th piston 220d drive its in the 4th casing housing 210d, move.
Like this, each coupled piston of each guide rod promotion moves in corresponding four casing housings.
Secondly, the introduction of countercylinder lid 10: referring to Fig. 2 and shown in Figure 3: cylinder head 10 is the integral body that is made of metal, in cylinder head 10, form columniform gas single channel 120, gas single channel 120 has the gas access of a gas access 180 as compressor at an end of cylinder head 10, at the other end of cylinder head 10 gas outlet of a gas outlet 190 as compressor is arranged.Be provided with metal valve fixed block 150 and a plurality of sealing gasket 140 of a plurality of one-way valves, a plurality of central cavity that connect along air-flow single channel 120 directions 120 li of gas single channels.After a plurality of assembly assemblings of gas single channel 120 are finished, the inlet attack 181 that forms central cavity is screwed into gas single channel 120 by gas access 180, the outlet connection 191 that forms central cavity is screwed into gas single channel 120 by gas outlet 190, a plurality of assemblies by inlet attack 181 and outlet connection 191 fixed gas single channels 120 make its constituent components chain.
On the smooth lower surface of cylinder head 10, form simultaneously the air-flow path of each casing housing of conducting, this channel connection gas single channel 120 and each casing housing.Concrete connected relation is: air-flow path 130a is communicated with gas single channel 120 and casing housing 210a; Air-flow path 130b is communicated with gas single channel 120 and casing housing 210b; Air-flow path 130c is communicated with gas single channel 120 and casing housing 210c; Air-flow path 130d is communicated with gas single channel 120 and casing housing 210d.
The concrete setting of a plurality of one-way valves is:
Inlet one-way valve 111 between gas access 180 and casing housing 210a;
One-way valve 112 between first cylinder between casing housing 210a and the casing housing 210b;
One-way valve 113 between second cylinder between casing housing 210b and the casing housing 210c;
One-way valve 114 between the 3rd cylinder between casing housing 210c and the casing housing 210d;
Outlet one-way valve 115 between casing housing 210d and gas outlet 190;
The all unidirectional conductings of 180 directions towards the gas access of all one-way valves guarantee that gas can only be along 180 directions to gas outlet 190 flow from the gas access.
For ease of explanation, hereinafter the part with the close gas access 180 of an assembly is called upstream extremity, and its part near gas outlet 190 is called downstream accordingly.
The position of one-way valve in gas single channel 120 is fixing by a plurality of valve fixed blocks that form central cavity 150, wherein 120 li valve fixed block 150 is set all at the gas single channel between gas access 180 and the inlet one-way valve 111, between each one-way valve that adjoins mutually, between outlet one-way valve 115 and the gas outlet 190.Valve fixed block 150 downstream between outlet one-way valve 115 and the gas outlet 180 and the engagement of the upstream extremity of outlet connection 191, the opening end engagement of the one-way valve in the downstream of each valve fixed block 150 in addition and the downstream of adjoining with it, engaging piece is by sealing gasket 140 sealings, and the central cavity of each valve fixed block 150 is just aimed at the opening of the one-way valve in its downstream when engagement, upstream extremity engagement inlet attack 181 downstream of the valve fixed block 150 between gas access 180 and the inlet one-way valve 111, their central cavity interconnects, the outlet of the upstream extremity of each valve fixed block 150 in addition and the upstream one-way valve of adjoining engagement, and the outlet of when engagement, just aiming at the one-way valve of its upstream of the central cavity of each valve fixed block 150 with it.Be provided with the vertical direction of gas single channel 120 on the valve fixed block 150 between adjacent two one-way valves simultaneously and be connected cavity 151, constitute air-flow path together with the passage of moulding on the cylinder head 10, be communicated with gas single channel 120 and corresponding casing housing.
In order to reduce production costs, be convenient to processing simultaneously, valve fixed block 150 also can a side form along the groove of described air-flow single channel 120 directions, and be communicated with described groove and casing housing be connected cavity 151.
As previously mentioned, the assembly in the gas single channel 120 can upstream be held assembling successively from downstream, and is last fixing by the inlet attack 181 and the outlet connection 191 at two ends again, forms the assembly chain.When individual component is damaged, only need change the assembly of this damage,, save user cost so can prolong the working life of whole gas compressor.
Once more, introduction to driving mechanism, referring to Fig. 2 and shown in Figure 4, the driving mechanism 30 of present embodiment mainly comprises the guide rod between bent axle 310 and connection bent axle 310 and the piston, and the piston that bent axle 310 drive respective guide rod and then driving are connected with guide rod moves reciprocatingly in each casing housing.As shown in the figure, bent axle 310 is multiplex assemblies, comprise that mainly two ends are provided with the main shaft 311 of external screw-thread, eccentric 312, are used for separating and fixing the pad 340 of each eccentric 312 on main shaft, be provided with bearing 331 and 332 in the both sides of main shaft 311 and be used for supporting spindle 311.Outer surface at main shaft 311 has a plurality of keyways 341 simultaneously, and keyway 341 separates along the central position corresponding to the guiding cavity of main shaft 311, and bent axle 310 also can replace with an assembly certainly.After the assembly on the main shaft 311 all installs,, can make each assembly constitute and be rigidly connected by being screwed into screw in main shaft 311 both sides.Bent axle 310 also comprises connecting rod 350, connects each eccentric 312 and corresponding guide rod by crosshead pin 351.An end is provided with drive pulley 360 on the main shaft 311, drives main shaft 311 and then drives bent axle 310 motions by belt.Setting-up eccentricity device 312 and to be used at the pad 340 that separates on the main shaft and fix each eccentric 312 be for when individual component goes wrong on the main shaft 311, can change at any time, improve the working life of each assembly, and then reduce the user cost of integral type gas gas compressor.
With reference to shown in Figure 4, be the amplification profile of bent axle 310, each eccentric is provided with two keyways 345 and 346 for 312 li, makes eccentric 312 can be fixed in two diverse locations of main shaft 311.Because bent axle is more common, repeats no more herein.
At last, be the working procedure that example is introduced the utility model compressor with the compressed oxygen: need the oxygen of compression to be transported to gas compressor by inlet attack 181, the valve fixed block 150 of its downstream of flowing through and inlet one-way valve 111.This moment, compressor was in the cyclic process, the first casing housing 210a is in the suction phase, this moment is owing to one-way valve 112 downstream pressures between first cylinder are higher than suction pressure, so the gas that flows to from inlet one-way valve 111 passes through the first air-flow path 130a by whole inspiration first casing housing 210a, and the one-way valve 112 between first cylinder of not flowing through.Compressed the gas of inspiration as the first casing housing 210a, be initially located in the discharge phase, because through overcompression, the pressure of discharging gas is higher than one-way valve 112 downstream pressures between first cylinder, so the gas of discharging is by the one-way valve 112 and the second air-flow path 130b between first cylinder, all flow into the second casing housing 210b, the one-way valve 113 between second cylinder of not flowing through of gas herein, same because one-way valve 113 downstream pressures are higher than its upstream pressure between second cylinder.Circulation is gone down so successively, be compressed through the first casing housing 210a, the second casing housing 210b, the 3rd casing housing 310c, the 4th casing housing 210d in turn from the gas of 181 li inputs of gas access joint, the high concentration gas that obtains at last is from outlet connection 191 output compressors.
In the process of gas compressor work, the combination of each piston-cylinder both had been compressed in the also gas of " not pump down volume " lining of compression compressors of gas of " pump down volume " lining of compressor.The volume that the piston that " pump down volume " herein refers to be moved in each casing housing pushed away." not pump down volume " refer to when Piston Compression, do not pushed away by piston face and equally by the volume of Piston Compression.With the second casing housing 210b is example, and pump down volume is the internal volume of the second casing housing 210b, and pump down volume is not the second gas channel internal volume, the internal volume of the first cylinder one-way valve 130A and the pad volume that directly is communicated with second casing housing and.
When the second casing housing 210b is in its compression phase time, at the gas of pump down volume not also by second Piston Compression.To compare with second casing housing be not very little to pump down volume.Therefore, to compare with pump down volume not be bigger to the whole pump down volume between the first casing housing 210a and the second casing housing 210b.So in its induction stroke, the oxygen of second piston pump down volume extraction never is less, can extract more oxygen from the first casing housing 210a and compress.
Similarly, each casing housing can more efficient compression.Because each casing housing is with the less relatively not pump down volume work between casing housing itself and subordinate casing housing upstream.
From above introducing as can be known, compare existing compressor, compressor arrangement compactness of the present utility model, floor space is little, stores, transports, uses all very convenient.
Foregoing description is an example with four cylinder compressors; The above-mentioned technical characteristics of this model utility is equally applicable to the compressor of other different number cylinders.In addition, this model utility is applicable to the compressor with the cylinder head of different one-way valves and anchor designs, and foregoing description only with a kind of compressor as demonstration.
Obviously, the foregoing description only is for example clearly is described, and is not the qualification to mode of execution.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all mode of executions.And conspicuous variation of being extended out thus or change still are among the protection domain of the utility model creation.
Claims (10)
1. an integral type gas compressor is characterized in that, comprising:
Form the cylinder single piece (20) of a plurality of casing housings, be provided with piston in each described casing housing; The cylinder head (10) that cooperates with described cylinder single piece (20);
And the driving mechanism (30) that drives described piston motion;
Form the gas single channel (120) of have the gas access (180) and gas outlet (190) in the described cylinder head (10), be provided with a plurality of one-way valves of control gaseous flow direction in the described gas single channel (120).
2. integral type gas compressor according to claim 1 is characterized in that: the volume of a plurality of described casing housings reduces gradually along gas flow direction.
3. integral type gas compressor according to claim 1 and 2 is characterized in that: described one-way valve comprises:
One is positioned at described gas access (180) and has between inlet one-way valve (111) from the casing housing of maximum volume to the unidirectional conducting of described maximum volume casing housing;
Between the described casing housing that adjoins between the cylinder of the unidirectional conducting of casing housing of less volume one-way valve;
One is positioned at the outlet one-way valve that has between minimum volume casing housing and the gas outlet (190) to the unidirectional conducting of described gas outlet (190).
4. want 3 described integral type gas compressors according to right, it is characterized in that: described one-way valve is fixed in the described air-flow single channel (120) by valve fixed block (150).
5. integral type gas compressor according to claim 4, it is characterized in that: described valve fixed block (150) forms the central cavity that connects along described air-flow single channel (120) direction, and be communicated with described central cavity and casing housing be connected cavity (151).
6. integral type gas compressor according to claim 4 is characterized in that: described valve fixed block (150) one sides form along the groove of described air-flow single channel (120) direction, and be communicated with described groove and casing housing be connected cavity (151).
7. integral type gas compressor according to claim 1 and 2 is characterized in that: described cylinder single piece (20) comprises four casing housings.
8. integral type gas compressor according to claim 1 is characterized in that: described driving mechanism comprises a bent axle (310) and is connected guide rod between described bent axle (310) and the piston.
9. integral type gas compressor according to claim 8 is characterized in that: described bent axle (310) comprises a main shaft (311) and a plurality of eccentric (312) that is installed on the described main shaft.
10. integral type gas compressor according to claim 9 is characterized in that: all form corresponding keyway on described main shaft (311) and the eccentric (312).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201111872U CN201190646Y (en) | 2008-04-23 | 2008-04-23 | Integral gas compressor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201111872U CN201190646Y (en) | 2008-04-23 | 2008-04-23 | Integral gas compressor |
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| Publication Number | Publication Date |
|---|---|
| CN201190646Y true CN201190646Y (en) | 2009-02-04 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201111872U Expired - Fee Related CN201190646Y (en) | 2008-04-23 | 2008-04-23 | Integral gas compressor |
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| Country | Link |
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| CN (1) | CN201190646Y (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575520A (en) * | 2009-08-17 | 2012-07-11 | 英瓦卡尔公司 | Compressor |
| CN102878061A (en) * | 2012-09-11 | 2013-01-16 | 佛山市广顺电器有限公司 | Multi-stage gas booster equipment |
| CN104033352A (en) * | 2014-06-18 | 2014-09-10 | 浙江强盛压缩机制造有限公司 | Compressor for natural gas refilling substation |
| US9624918B2 (en) | 2012-02-03 | 2017-04-18 | Invacare Corporation | Pumping device |
| CN108087236A (en) * | 2018-01-25 | 2018-05-29 | 成都康拓兴业科技有限责任公司 | Based on motor-driven multistage oxygen pressure charging system |
-
2008
- 2008-04-23 CN CNU2008201111872U patent/CN201190646Y/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102575520A (en) * | 2009-08-17 | 2012-07-11 | 英瓦卡尔公司 | Compressor |
| US9624918B2 (en) | 2012-02-03 | 2017-04-18 | Invacare Corporation | Pumping device |
| CN102878061A (en) * | 2012-09-11 | 2013-01-16 | 佛山市广顺电器有限公司 | Multi-stage gas booster equipment |
| CN102878061B (en) * | 2012-09-11 | 2015-09-09 | 佛山市广顺电器有限公司 | A kind of multi-level gas booster arrangement |
| CN104033352A (en) * | 2014-06-18 | 2014-09-10 | 浙江强盛压缩机制造有限公司 | Compressor for natural gas refilling substation |
| CN108087236A (en) * | 2018-01-25 | 2018-05-29 | 成都康拓兴业科技有限责任公司 | Based on motor-driven multistage oxygen pressure charging system |
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| C14 | Grant of patent or utility model | ||
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Owner name: INVACARE REHABILITATION EQUIPMENT (SUZHOU) CO., LT Free format text: FORMER OWNER: INVACARE (SUZHOU) CO., LTD. Effective date: 20130419 |
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| C41 | Transfer of patent application or patent right or utility model | ||
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Free format text: CORRECT: ADDRESS; FROM: 215021 SUZHOU, JIANGSU PROVINCE TO: 212026 SUZHOU, JIANGSU PROVINCE |
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| TR01 | Transfer of patent right |
Effective date of registration: 20130419 Address after: 212026 No. 435 rain street, Suzhou Industrial Park, Jiangsu, China Patentee after: Invacare rehabilitation equipment (Suzhou) Co., Ltd. Address before: 215021 No. 200 middle Rainbow Road, Suzhou Industrial Park, Jiangsu, China Patentee before: Invacare (Suzhou) Co., Ltd. |
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Addressee: Invacare rehabilitation equipment (Suzhou) Co., Ltd. Document name: Notification to Pay the Fees |
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| DD01 | Delivery of document by public notice |
Addressee: Invacare rehabilitation equipment (Suzhou) Co., Ltd. Document name: Notification of Termination of Patent Right |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090204 Termination date: 20150423 |
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| EXPY | Termination of patent right or utility model |