CN202017567U - Fuel oil filter and fuel oil filter seat - Google Patents
Fuel oil filter and fuel oil filter seat Download PDFInfo
- Publication number
- CN202017567U CN202017567U CN2011201051125U CN201120105112U CN202017567U CN 202017567 U CN202017567 U CN 202017567U CN 2011201051125 U CN2011201051125 U CN 2011201051125U CN 201120105112 U CN201120105112 U CN 201120105112U CN 202017567 U CN202017567 U CN 202017567U
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- Prior art keywords
- pump
- oil
- seat
- filter
- guide holder
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Abstract
The utility model relates to a fuel oil filter and a fuel oil filter seat. A manual pump is integrated on the fuel oil filter seat, and the filter is provided with a pump oil inlet cavity, a pump oil inlet pipeline and a pump oil outlet corresponding to the manual pump, only one oil line is reserved from the pump oil inlet cavity to the pump outlet and sequentially passes through the pump oil inlet cavity, the pump oil inlet pipeline, a pump oil cavity of the manual pump and the pump oil outlet, a one-way valve is mounted between the pump oil cavity and the pimp oil outlet, and the communication direction of the one-way valve is the direction from the pump oil cavity to the pump oil outlet. The fuel oil filter is characterized in that a sealing seat and a movable spherical sealing part are arranged in the pump oil inlet cavity, the sealing seat is provided with an oil hole, and the outer diameter of the spherical sealing part is larger than that of an orifice of the oil hole of the sealing seat so that the spherical sealing part can seal the orifice of the sealing seat. The fuel oil filter has the advantages of small oil combustion resistance and high in pressure bearing.
Description
Technical field
The utility model relates to fuel filter and the fuel filter seat that uses for motor.
Background technique
Fuel filter is a fuel oil purification plant that impurity such as iron oxide, dust, moisture in the fuel oil are filtered, it is clean making the fuel oil in the precision parts such as being transported to high pressure oil pump, fuel nozzle, guarantee that inordinate wear does not appear in these precision parts, guarantee motor stable operation and increase the service life.
Fuel filter comprises filter cleaner seat and filter core, the filter cleaner seat is integrated with hand pump, corresponding hand pump, filter cleaner is provided with the pump oil suction chamber, pump oil input channel and pump hydraulic fluid port, the pump oil suction chamber only has an oil circuit to pumping hydraulic fluid port, this oil circuit passes through the pump oil suction chamber successively, the pump oil input channel, the oil pumping chamber of hand pump and pump hydraulic fluid port, oil pumping chamber and pumping between the hydraulic fluid port, between oil pumping chamber and the pump oil suction chamber one-way valve is installed respectively, the conducting direction of each one-way valve is to lead to the direction that pumps hydraulic fluid port from the pump oil suction chamber, also be provided with filler opening on the filter cleaner seat, filler opening is provided with this filter core to the oil circuit of pump oil suction chamber.When the filter core that more renews, whole filter cleaner inner product has a large amount of gas, if do not discharge outside the filter cleaner, this part gas will enter in fuel pipe and the engine igniting system, motor can't normally be started, and hand pump just is mainly used in discharges the gas in the filter cleaner.Yet, because at oil pumping chamber with pump between the hydraulic fluid port, one-way valve respectively be installed between oil pumping chamber and the pump oil suction chamber, and fuel oil also will pass through hand pump, therefore the resistance of fuel flow is bigger, and finds to keep the flexibility of pump pressure lid activity of hand pump and the sealing between pump pressure lid and the pump directional post also to have difficulty in practice; Simultaneously because material and structural reason, under the long-term work condition hand pump bear pressure can only be about 0.2MPa.
The model utility content
The purpose of this utility model is to provide a kind of fuel filter, is intended to reduce the flow resistance of fuel oil.
Purpose in addition of the present utility model is to provide a kind of fuel filter seat, is intended to reduce the flow resistance of fuel oil.
For realizing the fuel filter seat of described purpose, be integrated with hand pump, corresponding hand pump, filter cleaner is provided with the pump oil suction chamber, pump oil input channel and pump hydraulic fluid port, the pump oil suction chamber only has an oil circuit to pumping hydraulic fluid port, this oil circuit passes through the pump oil suction chamber successively, the pump oil input channel, the oil pumping chamber of hand pump and pump hydraulic fluid port, oil pumping chamber and pump one-way valve is installed between the hydraulic fluid port, the conducting direction of this one-way valve is to lead to the direction that pumps hydraulic fluid port from oil pumping chamber, be characterized in, be provided with sealing seat and mobilizable spherical sealing element in the pump oil suction chamber, sealing seat has oilhole, the external diameter of spherical sealing element greater than the orifice diameter of the oilhole of sealing seat so that spherical sealing element can seal up the aperture of sealing seat.
Described fuel filter seat, its further characteristics be, the external diameter of spherical sealing element is greater than the maximum spherical part latus rectum of pump oil input channel, and the pump oil input channel tilts with respect to oil pumping chamber.
Described fuel filter seat, its further characteristics are that the cross section of pump oil input channel is an elongated hole.
Described fuel filter seat, its further characteristics are, hand pump comprises the pump pressure lid, the pump Returnning spring, pump guide holder and pump fastening cover, the fixedly connected filter cleaner seat of pump fastening cover, the pump guide holder is by pump fastening cover and filter cleaner seat fixed clamp, the pump pressure lid is enclosed within on the pump guide holder movably, the pump fastening cover provides the pump pressure lid is carried out spacing limited part, the pump guide holder, limit described oil pumping chamber between pump pressure lid and the filter cleaner seat, place this pump Returnning spring in the oil pumping chamber, one end of pump Returnning spring is against that pump pressure covers and the other end is against on the filter cleaner seat, the outer side wall of pump guide holder is embedded with the U-shaped or the Y shape lip-type seal circle of paired setting, the opening of U-shaped or Y shape lip-type seal circle along the pump guide holder axially outwards, this U-shaped or Y shape lip-type seal circle seal up the gap between the outer side wall of the madial wall of pump pressure lid and pump guide holder.
Described fuel filter seat, its further characteristics be, the pump oil suction chamber is limited by a counterbore of pipe joint, sealing seat and filter cleaner seat, this pipe joint this counterbore that is threaded, sealing seat this pipe joint that is threaded.
For realizing the fuel filter of described purpose, comprise filter cleaner seat and filter core, the filtering seat is integrated with hand pump, corresponding hand pump, filter cleaner is provided with the pump oil suction chamber, pump oil input channel and pump hydraulic fluid port, the pump oil suction chamber only has an oil circuit to pumping hydraulic fluid port, this oil circuit passes through the pump oil suction chamber successively, the pump oil input channel, the oil pumping chamber of hand pump and pump hydraulic fluid port, oil pumping chamber and pump one-way valve is installed between the hydraulic fluid port, the conducting direction of this one-way valve is to lead to the direction that pumps hydraulic fluid port from oil pumping chamber, also be provided with filler opening on the filter cleaner seat, filler opening is provided with this filter core to the oil circuit of pump oil suction chamber, be characterized in, be provided with sealing seat and mobilizable spherical sealing element in the pump oil suction chamber, sealing seat has oilhole, so that spherical sealing element can seal up the aperture of sealing seat, oil flowed out the position to the external diameter of spherical sealing element after the oilhole of sealing seat was communicated to the filtration of filter core greater than the orifice diameter of the oilhole of sealing seat.
Described fuel filter, its further characteristics be, the external diameter of spherical sealing element is greater than the maximum spherical part latus rectum of pump oil input channel, and the pump oil input channel tilts with respect to oil pumping chamber.
Described fuel filter, its further characteristics are that the cross section of pump oil input channel is an elongated hole.
Described fuel filter, its further characteristics are, hand pump comprises the pump pressure lid, the pump Returnning spring, pump guide holder and pump fastening cover, the fixedly connected filter cleaner seat of pump fastening cover, the pump guide holder is by pump fastening cover and filter cleaner seat fixed clamp, the pump pressure lid is enclosed within on the pump guide holder movably, the pump fastening cover provides the pump pressure lid is carried out spacing limited part, the pump guide holder, limit described oil pumping chamber between pump pressure lid and the filter cleaner seat, place this pump Returnning spring in the oil pumping chamber, one end of pump Returnning spring is against that pump pressure covers and the other end is against on the filter cleaner seat, the outer side wall of pump guide holder is embedded with the U-shaped or the Y shape lip-type seal circle of paired setting, the opening of U-shaped or Y shape lip-type seal circle along the pump guide holder axially outwards, this U-shaped or Y shape lip-type seal circle seal up the gap between the outer side wall of the madial wall of pump pressure lid and pump guide holder.
Described fuel filter, its further characteristics are, the pump oil suction chamber is limited by a counterbore of pipe joint, sealing seat and filter cleaner seat, this pipe joint screw thread utilizes outside thread to connect the be threaded internal thread of this pipe joint of this counterbore sealing seat, this pipe joint also utilizes outside thread to connect the center of the upper end cap of this filter core, the filler opening that filter core is arranged on this upper end cap is provided with lip ring between this upper end cap of periphery of the filler opening of filter core and filter cleaner seat.
U-shaped or Y shape lip-type seal circle can guarantee the flexibility and the sealing of pump pressure lid activity simultaneously, and U-shaped or Y shape lip-type seal circle also be the standard seal part on the hydraulic pressure, are easy to buying.Therefore the aforementioned techniques scheme has the low advantage of cost of production.
Adopt an one-way valve that constitutes by spherical sealing element and sealing seat and conventional one-way valve to substitute in the past two conventional one-way valves, therefore also have the little advantage of flow resistance.Conventional one-way valve generally is made up of spring, Sealing and valve body, during fuel oil process one-way valve,, enter the runner of back from the outside of Sealing with Sealing and spring jack-up, so not only will overcome the resistance of spring, and will overcome the resistance that cross section of fluid channel changes and 90 degree turn to; And the one-way valve of employing spherical sealing element form, fuel oil directly impacts on sphere, enters the runner of back along the spherical outside, so only need overcome the down force of spherical sealing element, has the little advantage of tangible resistance.
Description of drawings
Fig. 1 is the tectonic maps of first embodiment's fuel filter.
Fig. 2 is the tectonic maps of Fig. 1 intermediate fuel oil filter cleaner seat.
Fig. 3 is the fundamental diagram of Fig. 1 intermediate fuel oil filter cleaner seat.
Fig. 4 is the tectonic maps of second embodiment's fuel filter.
Fig. 5 is the tectonic maps of Fig. 4 intermediate fuel oil filter cleaner seat.
Embodiment
Simultaneously fuel filter seat, fuel filter are exemplarily illustrated to first embodiment shown in Figure 3, Fig. 4 to second embodiment shown in Figure 5 below in conjunction with Fig. 1.
As shown in Figure 1, fuel filter comprises fuel filter seat 1 and filter core 3.
As shown in Figure 2, fuel filter seat 1 has filler opening 30, and the fuel oil that is not filtered enters from filler opening 30, and fuel oil herein may contain impurity such as iron oxide, dust, moisture.Fuel filter seat 1 also has pump oil suction chamber 32, pump oil suction chamber 32 is that the counterbore by pipe joint 19, sealing seat 21 and filter cleaner seat 1 limits, pipe joint 19 has outside thread, and connects this counterbore of filter cleaner seat 1 by outside thread, and sealing seat 21 is threaded in the inside of pipe joint 19.Mobilizable spherical sealing element 20 is arranged in the pump oil suction chamber 32, and the external diameter of spherical sealing element 20 just seals up sealing seat 21 greater than the orifice diameter of the oilhole 210 of sealing seat 21 when spherical sealing element 20 is seated in the aperture of sealing seat 21.Pipe joint 19 also connects the center of the upper end cap of filter core 3 by its outside thread, be provided with lip ring 2 between this upper end cap and the filter cleaner seat 1, the fuel oil that enters from the filler opening 30 of filter cleaner seat 1 can enter into filter core 3 through the filler opening of the upper end cap of filter core 3, and enter into pump oil suction chamber 32 through sealing seat 21 after the filtering material filtration via filter core 3, therefore enter into the oil of the fuel oil of pump oil suction chamber 32, can not stop up hand pump 6 for cleaning.The housing bottom of filter core 3 has discharging valve 5 and seal ring 4.
Continuation is with reference to Fig. 2, fuel filter seat 1 also has pump oil input channel 33, the cross section of pump oil input channel 33 can be circular or square or waist shape or arc or other shapes, no matter which kind of shape pump oil input channel 33 is, defines the spherical parts latus rectum of the diameter of this spherical parts under its situation that can allow that spherical parts passes through for this pump oil input channel.The shape of cross section of pump oil input channel 33 is elongated hole preferably, for example is arcuate socket.One end of pump oil input channel 33 connects pump oil suction chamber 32, one ends and connects oil pumping chamber 34.Spherical sealing element 20 receives that the promotion of oil pressure generally is to be suspended in the pump oil suction chamber 32, generally can not touch pump oil input channel 33, but preferably the external diameter of spherical sealing element 20 is enough to make it can not pass pump oil input channel 33, can not be stuck in the pump oil input channel 33 yet, more can not enter into oil pumping chamber 34, pump oil input channel 33 relative pump oil suction chambers 32 tilt, and 45 degree for example tilt.Fuel filter seat 1 also has the hydraulic fluid port of pumping 31, oil pumping chamber 34 and pump one-way valve 15 is set between the hydraulic fluid port 31, and the conducting direction of one-way valve 15 such as the arrow indicated direction among the figure are led to from oil pumping chamber 34 and to be pumped hydraulic fluid port 31.In the embodiment shown in Figure 2, pump oil suction chamber 32 has only an oil circuit to pumping between the hydraulic fluid port 31, i.e. the oil circuit that passes through pump oil suction chamber 32, pump oil input channel 33, oil pumping chamber 34 and pump hydraulic fluid port 31 successively.
As shown in Figures 2 and 3, when hand pump gland 11 was pressed down, oil pumping chamber 34 produced malleation, this moment, one-way valve 15 was opened under the effect of malleation, and spherical sealing element 20 contacts with sealing seat 21 in the bottom, under the effect of malleation, spherical sealing element 20 and sealing seat 21 compacted sealings; This moment, oil pumping chamber 34 interior gases can only flow to oil outlet 31 from one-way valve 15, were discharged from by the relief opening on the oil outlet 30.When unclamping hand pump gland 11, under the effect of pump Returnning spring 12, oil pumping chamber 34 produces negative pressure, this moment is under the effect of negative pressure, one-way valve 15 closures, spherical sealing element 20 is picked up, is broken away from sealing seat 21, the interior corresponding suction pump oil pocket 34 of air quilt of fuel oil fitering element this moment, and fuel oil also is inhaled into fuel oil fitering element 3 from filler opening 30 accordingly.Cycling so repeatedly all is full of fuel oil in final fuel oil fitering element 3 and the oil pumping chamber 34.
When engine start, hand oil pump 6 is idle.Fuel oil is inhaled into fuel oil fitering element 3 from filler opening 30, and clean product after filtering enters pump oil suction chamber 32, enters oil pumping chamber 34 by pump oil input channel 33 again by ball valve 11, finally enters oil outlet 31 by one-way valve 15 and enters in the oil-fired system.
Aforesaid embodiment has advantage easy to use, after hand pump and the integrated design of filter cleaner seat, when in the user finds filter cleaner or in the fuel pipe gas being arranged, open the relief opening on fuel filter seat oil outlet top, push hand pump then, can very easily these gases be discharged.
Aforesaid embodiment also has advantage easy to maintenance.If leakage of oil appears in hand pump, when pushing fault such as motionless, the user can turn on fixing screw, ressembles after the part in the hand pump is cleaned, and can solve fault.
Aforesaid embodiment also has the low advantage of cost of production.Assembling this hand oil pump does not need different equipment, and U-shaped or Y shape lip-type seal circle also are the standard seal parts on the hydraulic pressure, is easy to buying.
Aforesaid embodiment adopts the hand pump of U-shaped or Y shape lip-type seal coil structures, have and to bear the high advantage of pressure, after tested, its the highest pressure that bears can reach 0.7MPa even higher under the condition of working long hours, and the fuel filter of traditional integrating manual oil pump, its highest pressure that bears is about 0.2MPa under the condition of working long hours.
Aforesaid embodiment adopts a spherical sealing element and a conventional one-way valve, therefore also has the little advantage of flow resistance.If adopt two conventional one-way valves, after tested, obviously big many of its resistance.
As: when adopting a spherical sealing with a conventional one-way valve, under flow 300L/h, resistance is 6kPa.
When adopting two conventional one-way valves, under flow 300L/h, resistance is 9kPa.
In embodiment as shown in Figure 4 and Figure 5, different with first embodiment is, the described counterbore of pipe joint and filter cleaner seat is an one.
Claims (10)
1. fuel filter seat, be integrated with hand pump, corresponding hand pump, the filter cleaner seat is provided with the pump oil suction chamber, pump oil input channel and pump hydraulic fluid port, the pump oil suction chamber only has an oil circuit to pumping hydraulic fluid port, this oil circuit passes through the pump oil suction chamber successively, the pump oil input channel, the oil pumping chamber of hand pump and pump hydraulic fluid port, oil pumping chamber and pump one-way valve is installed between the hydraulic fluid port, the conducting direction of this one-way valve is to lead to the direction that pumps hydraulic fluid port from oil pumping chamber, it is characterized in that, be provided with sealing seat and mobilizable spherical sealing element in the pump oil suction chamber, sealing seat has oilhole, the external diameter of spherical sealing element greater than the orifice diameter of the oilhole of sealing seat so that spherical sealing element can seal up the aperture of sealing seat.
2. fuel filter seat as claimed in claim 1 is characterized in that, the external diameter of spherical sealing element is greater than the maximum spherical part latus rectum of pump oil input channel, and the pump oil input channel tilts with respect to oil pumping chamber.
3. fuel filter seat as claimed in claim 1 is characterized in that, the cross section of pump oil input channel is an elongated hole.
4. fuel filter seat as claimed in claim 1, it is characterized in that, hand pump comprises the pump pressure lid, the pump Returnning spring, pump guide holder and pump fastening cover, the fixedly connected filter cleaner seat of pump fastening cover, the pump guide holder is by pump fastening cover and filter cleaner seat fixed clamp, the pump pressure lid is enclosed within on the pump guide holder movably, the pump fastening cover provides the pump pressure lid is carried out spacing limited part, the pump guide holder, limit described oil pumping chamber between pump pressure lid and the filter cleaner seat, place this pump Returnning spring in the oil pumping chamber, one end of pump Returnning spring is against that pump pressure covers and the other end is against on the filter cleaner seat, the outer side wall of pump guide holder is embedded with the U-shaped or the Y shape lip-type seal circle of paired setting, the opening of U-shaped or Y shape lip-type seal circle along the pump guide holder axially outwards, this U-shaped or Y shape lip-type seal circle seal up the gap between the outer side wall of the madial wall of pump pressure lid and pump guide holder.
5. fuel filter seat as claimed in claim 1 is characterized in that, the pump oil suction chamber is limited by a counterbore of pipe joint, sealing seat and filter cleaner seat, this pipe joint this counterbore that is threaded, sealing seat this pipe joint that is threaded.
6. fuel filter, comprise filter cleaner seat and filter core, the filtering seat is integrated with hand pump, corresponding hand pump, the filter cleaner seat is provided with the pump oil suction chamber, pump oil input channel and pump hydraulic fluid port, the pump oil suction chamber only has an oil circuit to pumping hydraulic fluid port, this oil circuit passes through the pump oil suction chamber successively, the pump oil input channel, the oil pumping chamber of hand pump and pump hydraulic fluid port, oil pumping chamber and pump one-way valve is installed between the hydraulic fluid port, the conducting direction of this one-way valve is to lead to the direction that pumps hydraulic fluid port from oil pumping chamber, also be provided with filler opening on the filter cleaner seat, filler opening is provided with this filter core to the oil circuit of pump oil suction chamber, it is characterized in that, be provided with sealing seat and mobilizable spherical sealing element in the pump oil suction chamber, sealing seat has oilhole, so that spherical sealing element can seal up the aperture of sealing seat, oil flowed out the position to the external diameter of spherical sealing element after the oilhole of sealing seat was communicated to the filtration of filter core greater than the orifice diameter of the oilhole of sealing seat.
7. fuel filter as claimed in claim 6 is characterized in that, the external diameter of spherical sealing element is greater than the maximum spherical part latus rectum of pump oil input channel, and the pump oil input channel tilts with respect to oil pumping chamber.
8. fuel filter as claimed in claim 6 is characterized in that, the cross section of pump oil input channel is an elongated hole.
9. fuel filter as claimed in claim 6, it is characterized in that, hand pump comprises the pump pressure lid, the pump Returnning spring, pump guide holder and pump fastening cover, the fixedly connected filter cleaner seat of pump fastening cover, the pump guide holder is by pump fastening cover and filter cleaner seat fixed clamp, the pump pressure lid is enclosed within on the pump guide holder movably, the pump fastening cover provides the pump pressure lid is carried out spacing limited part, the pump guide holder, limit described oil pumping chamber between pump pressure lid and the filter cleaner seat, place this pump Returnning spring in the oil pumping chamber, one end of pump Returnning spring is against that pump pressure covers and the other end is against on the filter cleaner seat, the outer side wall of pump guide holder is embedded with the U-shaped or the Y shape lip-type seal circle of paired setting, the opening of U-shaped or Y shape lip-type seal circle along the pump guide holder axially outwards, this U-shaped or Y shape lip-type seal circle seal up the gap between the outer side wall of the madial wall of pump pressure lid and pump guide holder.
10. fuel filter as claimed in claim 6, it is characterized in that, the pump oil suction chamber is limited by a counterbore of pipe joint, sealing seat and filter cleaner seat, this pipe joint screw thread utilizes outside thread to connect the be threaded internal thread of this pipe joint of this counterbore sealing seat, this pipe joint also utilizes outside thread to connect the center of the upper end cap of this filter core, the filler opening that filter core is arranged on this upper end cap is provided with lip ring between this upper end cap of periphery of the filler opening of filter core and filter cleaner seat.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201051125U CN202017567U (en) | 2011-04-11 | 2011-04-11 | Fuel oil filter and fuel oil filter seat |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201051125U CN202017567U (en) | 2011-04-11 | 2011-04-11 | Fuel oil filter and fuel oil filter seat |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202017567U true CN202017567U (en) | 2011-10-26 |
Family
ID=44811237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201051125U Expired - Lifetime CN202017567U (en) | 2011-04-11 | 2011-04-11 | Fuel oil filter and fuel oil filter seat |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202017567U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734016A (en) * | 2011-04-11 | 2012-10-17 | 派克汉尼汾液压系统(上海)有限公司 | Fuel oil filter and fuel oil filter seat |
| CN105736203A (en) * | 2016-04-18 | 2016-07-06 | 临海市江南内燃机附件厂 | Fuel filter assembly for fuel and water separation |
-
2011
- 2011-04-11 CN CN2011201051125U patent/CN202017567U/en not_active Expired - Lifetime
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102734016A (en) * | 2011-04-11 | 2012-10-17 | 派克汉尼汾液压系统(上海)有限公司 | Fuel oil filter and fuel oil filter seat |
| CN105736203A (en) * | 2016-04-18 | 2016-07-06 | 临海市江南内燃机附件厂 | Fuel filter assembly for fuel and water separation |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ASS | Succession or assignment of patent right |
Owner name: PARKER HANNIFIN FILTER SYSTEM (SHANGHAI) CO., LTD. Effective date: 20130329 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20130329 Address after: 201206 Jinqiao Road, Pudong New Area Jinqiao Export Processing Zone, Shanghai, 280 Patentee after: Parker Hannifin Hydraulic System (Shanghai) Co., Ltd. Patentee after: Parker Hannifin Filtration System (Shanghai) Co., Ltd. Address before: 201206 Jinqiao Road, Pudong New Area Jinqiao Export Processing Zone, Shanghai, 280 Patentee before: Parker Hannifin Hydraulic System (Shanghai) Co., Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20111026 |