CN202936056U - Oil pressure buffer - Google Patents
Oil pressure buffer Download PDFInfo
- Publication number
- CN202936056U CN202936056U CN 201220567460 CN201220567460U CN202936056U CN 202936056 U CN202936056 U CN 202936056U CN 201220567460 CN201220567460 CN 201220567460 CN 201220567460 U CN201220567460 U CN 201220567460U CN 202936056 U CN202936056 U CN 202936056U
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- pressure cylinder
- switch
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- ring
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Abstract
An oil pressure buffer is used for a buffering stopper of an elevator car, and comprises a bottom plate, wherein a pressure cylinder is welded on the upper surface of the bottom plate; the upper end of the pressure cylinder is connected with a pressure cylinder threaded sleeve; a piston is mounted in the middle of the inner cavity of the pressure cylinder; a piston ring is arranged between the piston and the pressure cylinder; the upper end of the piston is connected with a piston cylinder; the upper end of the piston cylinder penetrates through the pressure cylinder threaded sleeve and is connected with an end cover in a sealing way; the upper surface of the end cover is connected with a baffle plate; an O-type seal ring is mounted between the pressure cylinder threaded sleeve and the piston cylinder; the upper surface of the bottom plate is vertically connected with an adjusting rod; the upper end of the adjusting rod sequentially penetrates through the piston and a spring seat; the spring seat is arranged at the upper part of the adjusting rod in a clamping way; a compression spring is mounted between the end cover and the spring seat; the spring seat and the piston are arranged at an interval; a first annular groove is formed in the middle of the outer surface of the piston cylinder in the circumferential direction; and a steelwire retainer ring is mounted in the first annular groove, and the upper surface of the steelwire retainer ring is propped against the lower surface of the pressure cylinder threaded sleeve. The oil pressure buffer provided by the utility model is simple in structure and easy to process and mount, reduces production cost, limits position and saves time.
Description
Technical field
The utility model relates to a kind of stopper of the buffering for car, espespecially a kind of oleo gear.
Background technology
When lift car or counterweight landing, do not stop up-and-down movement in order to prevent lift car or counterweight landing in elevator hoistways, in the elevator hoistways bottom, oleo gear is installed.Make lift car or counterweight move downward with above oleo gear, bump after, towing machine outage.Oleo gear makes lift car or counterweight relax stop.
Shown in Fig. 1, existing hydraulic buffer of elevator comprises base plate 1 '.Welding pressure cylinder 2 ' above base plate 1 ', the top of pressure cylinder 2 ' is equipped with oily window component 5 ', the upper end of pressure cylinder 2 ' the pressure cylinder swivel nut 6 ' that is adhesively fixed.The inner chamber top of pressure cylinder 2 ' is equipped with piston 3 '.Between piston 3 ' and pressure cylinder 2 ', piston ring 4 ' is installed.The upper end of piston 3 ' is connected with piston barrel 8 '.Pressure cylinder swivel nut 6 ' is passed afterwards in the upper end of piston barrel 8 ' and end cap 9 ' is tightly connected.Sliding block joint between piston barrel 8 ' and pressure cylinder swivel nut 6 '.Between piston barrel 8 ' and pressure cylinder swivel nut 6 ', O RunddichtringO 7 ' is installed.Be vertically installed with sealing plug parts 11 ' on end cap 9 '.The inner chamber top of piston barrel 8 ' is stretched in the lower end of sealing plug parts 11 '.The top connection dash plate 10 ' of end cap 9 '.The upper surface welding adjust bar 20 ' of base plate 1 '.The upper end of adjust bar 20 ' is upwards successively through stretching into the intracavity bottom of piston barrel 8 ' after piston 3 ' and spring bearing 18 ', and by with nut 19 ', being spirally connected spring bearing 18 ' is fixed on the step surface on adjust bar 20 ' top.The inner chamber of piston barrel 8 ' is equipped with Compress Spring 12 ', the upper and lower end of Compress Spring 12 ' be against respectively end cap 9 ' following and spring bearing 18 ' above.The lateral surface of end cap 9 ' is made bar 13 ' with switch and is connected.The lateral surface of pressure cylinder 2 ' is connected with switch bracket 14 '.Be hinged with bearing pin on switch bracket 14 ', connection of rotating plate 17 ' on bearing pin, the bottom surface that switch is made bar 13 ' contacts with rotor plate 17 '.Switch 16 ' is installed on switch bracket 14 ', the contact 15 ' of switch 16 ' be positioned at rotor plate 17 ' under.During use, when car or when focusing on the downward landing of Lift out of order, move downward the dash plate 10 ' that touches oleo gear, dash plate 10 ' drives piston barrel 8 ', piston 3 ' and switch are made bar 13 ' and are moved downward, in this process, piston barrel 8 ' slides along the surface of internal cavity of pressure cylinder swivel nut 6 ', piston 3 ' glides along the surface of internal cavity of pressure cylinder 2 ', fluid in oleo gear is filled into the inner chamber of piston barrel 8 ', when switch is made bar 13 ' and is promoted rotor plate 17 ' and touch the contact 15 ' of switch 16 ' downwards, the towing machine outage, the hydraulic coupling that fluid produces makes lift car or counterweight relax stop, reduced the impulsive force that lift car or counterweight descend.
This oleo gear has following shortcoming:
(1) the adjust bar upper end is spirally connected with nut after passing piston and spring bearing, by the movement travel of this structural limitations piston barrel, prevents its separating pressure cylinder, and it need to waste man-hour in adjust bar upper end machining screw, and adjust bar and nut are installed also inconvenient;
(2) piston barrel of this oleo gear is directly led with pressure cylinder swivel nut surface of internal cavity, because screw collar is steel part, hardness is higher, in the piston barrel motion process, can scratch piston barrel, can not guarantee the in-use performance of oleo gear, the service life of oleo gear is short;
(3) adopt switch to beat the contact of bar and rotor plate touching switch, need the very long bar of beating is set, not only waste material, waste installing space, after the each action of oleo gear simultaneously, switch is made bar and can be tilted, and with switch bracket, produces and interferes.
The utility model content
The purpose of this utility model is to provide a kind of oleo gear, and it is simple in structure, be easy to processing, install, and has reduced productive costs, spacing saving time.
To achieve these goals, technical solution of the present utility model is: a kind of oleo gear, comprise base plate, be welded with pressure cylinder above described base plate, the upper end Bonding pressure cylinder swivel nut of described pressure cylinder, piston is installed at the inner chamber middle part of described pressure cylinder, be provided with piston ring between described piston and pressure cylinder, the upper end of described piston connects piston barrel, the upper end of described piston barrel is connected with end cap seal through after the pressure cylinder swivel nut, the top connection dash plate of described end cap, between described pressure cylinder swivel nut and piston barrel, the O RunddichtringO is installed, the upper surface of described base plate vertically connects adjust bar, the upper end of described adjust bar is successively through piston and spring perch, described spring perch is placed on the step surface on adjust bar top, between described end cap and spring perch, Compress Spring is installed, between wherein said spring perch and piston, be spaced, the outside face middle part of described piston barrel is along being circumferentially with the first circular groove, in described the first circular groove, elastic spring is installed, the upper surface of described elastic spring is against the lower surface of pressure cylinder swivel nut.
The utility model oleo gear, be provided with the copper guide ring between wherein said pressure cylinder swivel nut and piston barrel, sliding block joint between described piston barrel and copper guide ring.
The utility model oleo gear, the outside face of wherein said pressure cylinder swivel nut is connected with switch bracket, on described switch bracket, switch is installed, the axis of described switch is vertical with the axis of pressure cylinder swivel nut, the sidewall of described pressure cylinder swivel nut is provided with the first through hole, the switch bearing pin that one end can contact with the contact of switch is installed in described the first through hole, and the outside face of described piston barrel is along being circumferentially with the second circular groove, and the other end of described switch bearing pin inserts in the second circular groove.
The utility model oleo gear, the inner chamber of wherein said the first through hole is equipped with axle sleeve, and described switch bearing pin is installed in axle sleeve, and O type the second seal ring is installed between described pass bearing pin and axle sleeve.
The utility model oleo gear, be hinged with rotating shaft on the sidewall of wherein said switch bracket, the outside face of described rotating shaft is vertically welded with along its length switch and re-packs, one end of described switch bearing pin vertically is against on one of them face that switch re-packs, and the contact of described switch vertically is against on the another one face that switch re-packs.
The utility model oleo gear, the center of wherein said piston is provided with the stepped appearance cutoff port that adjust bar passes, described cutoff port is from bottom to top successively by cylindrical second, three, the four-way hole forms, described second, the diameter in four-way hole all is greater than the diameter of third through-hole, the bottom of described the second through hole is along being circumferentially with the 3rd circular groove, in described the 3rd circular groove, back-up ring is installed, the center of described back-up ring is provided with the fifth hole that adjust bar passes, in described the second through hole, restrictor ring is installed, described restrictor ring be positioned at back-up ring above, the center of described restrictor ring is provided with the 6th through hole that adjust bar passes, the surface of described restrictor ring is along circumferentially being evenly equipped with several oil flow holes, the described the 3rd, five, the diameter of six through holes all is greater than each cross-sectional diameter on adjust bar.
After adopting such scheme, in first circular groove of the utility model oleo gear by the outside face at piston barrel, elastic spring is installed, make elastic spring be against the lower surface of pressure cylinder swivel nut, so just the accurate scope of limited piston cylinder upward movement, can not skid off from the pressure cylinder swivel nut it, guaranteed the free height of the utility model oleo gear, and simple in structure, be easy to processing, reduced productive costs, and its easy for installation, spacing saving time.
The further effect of the utility model oleo gear is: the copper guide ring is set between pressure cylinder swivel nut and piston barrel, make copper guide ring and piston barrel cliding friction, because copper guide ring quality is soft, therefore be difficult for scratching the piston barrel surface, extend the service life of piston barrel, solved the shortcoming that existing steel pressure cylinder swivel nut and the direct cliding friction of piston barrel easily scratch piston barrel.
The further effect of the utility model oleo gear is: with the contact of switch bearing pin touching switch, replaced the very long bar of beating, beat the problem that bar tilts and switch bracket is interfered after having solved the each action of past oleo gear, saved material simultaneously and required space is installed.
The further effect of the utility model oleo gear is: in the first through hole of pressure cylinder swivel nut, axle sleeve is installed, guarantee the switch pin slide, reduce friction, and, by O type the second seal ring is set between axle sleeve and switch bearing pin, guarantee the leak tightness of energy disperser.
The further effect of the utility model oleo gear is: by installation rotating shaft and switch on switch bracket, re-pack, make the arm of force of the contact of the arm of force between switch bearing pin and rotating shaft and switch and rotating shaft different, amplify the stroke of switch bearing pin, the fine motion of switch bearing pin just can be by switch opens like this, therefore can make the second circular groove design more shallow of piston barrel outside face, in the situation that the identical intensity that increases piston barrel of wall thickness, making the utility model oleo gear be applicable to more large-tonnage elevator uses, in the identical situation of intensity, can make the wall thickness of piston barrel diminish, save material.
The further effect of the utility model oleo gear is: guarantee that fluid can be into and out of the piston barrel inner chamber.
The accompanying drawing explanation
Fig. 1 is that the master of existing oleo gear looks cutaway view;
Fig. 2 is that the master of the utility model oleo gear looks cutaway view;
Fig. 3 is the enlarged diagram of the local A in Fig. 2;
Fig. 4 is the enlarged diagram at switch bracket place of another embodiment of the utility model oleo gear.
Below in conjunction with accompanying drawing, by embodiment, the utility model is described further;
The specific embodiment
As shown in Figures 2 and 3, the utility model oleo gear, comprise base plate 1.Be welded with pressure cylinder 2 above base plate 1.The upper end of the pressure cylinder 2 pressure cylinder swivel nut 3 that is adhesively fixed.Piston 4 is installed at the inner chamber middle part of pressure cylinder 2.The center of piston 4 is processed with the stepped appearance cutoff port.Cutoff port consists of cylindrical the second through hole 24, third through-hole 25 and fourth hole 26 from bottom to top successively.The diameter of the second through hole 24 and fourth hole 26 all is greater than the diameter of third through-hole 25.The bottom of the second through hole 24 is along circumferentially being processed with the 3rd circular groove 27.In the 3rd circular groove 27, back-up ring 28 is installed.Back-up ring 28De center is processed with fifth hole 29.In the second through hole 24, restrictor ring 30 is installed.Restrictor ring 30 be positioned at back-up ring 28 above.Restrictor ring 30De center is processed with the 6th through hole 31, and the surface of restrictor ring 30 is along circumferentially being evenly equipped with several oil flow holes 34.Between piston 4 and pressure cylinder 2, piston ring 5 is installed.The upper end of piston 4 connects piston barrel 6.Pressure cylinder swivel nut 3 is passed afterwards in the upper end of piston barrel 6 and end cap 7 is tightly connected.The top connection dash plate 35 of end cap 7.Felt collar 32, copper guide ring 14 and O RunddichtringO 8 are installed between pressure cylinder swivel nut 3 and piston barrel 6 from top to bottom successively, and the leak tightness that adopts felt collar 32 and O RunddichtringO 8 to guarantee between pressure cylinder swivel nut 3 and piston barrel 6, prevent that dust from entering and oil spill goes out.Sliding block joint between copper guide ring 14 and piston barrel 6.Because copper guide ring 14 materials are soft, be difficult for scratching piston barrel 6, extended the service life of piston barrel 6.The upper surface of base plate 1 is vertically welded with adjust bar 9.The upper end of adjust bar 9 is successively through the fifth hole 29 of back-up ring 28, the 6th through hole 31 of restrictor ring 30, cutoff port and the spring perch 10 of piston 4.The diameter of the third through-hole 25 of cutoff port, fifth hole 29 and the 6th through hole 31 all is greater than each cross-sectional diameter on adjust bar 9.Spring perch 10 is placed on the step surface on adjust bar 9 tops.Between end cap 7 and spring perch 10, Compress Spring 11 is installed.Between spring perch 10 and piston 4, be spaced.Guarantee that fluid can enter in piston barrel 6.The outside face middle part of piston barrel 6 is along circumferentially being processed with the first circular groove 12.In the first circular groove 12, elastic spring 13 is installed, the upper surface of elastic spring 13 is against the lower surface of pressure cylinder swivel nut 3.The outside face of pressure cylinder swivel nut 3 is welded with switch bracket 15.Switch 16 is installed on switch bracket 15.The axis of switch 16 is vertical with the axis of pressure cylinder swivel nut 3.Be processed with the first through hole 17 on the sidewall of pressure cylinder swivel nut 3.The interior installation axle sleeve 21 of the first through hole 17, the interior installation switch of axle sleeve 21 bearing pin 19.O type the second seal ring 33 is installed between switch bearing pin 19 and axle sleeve 21.One end of switch bearing pin 19 contacts with the contact 18 of switch 16.The outside face of piston barrel 6 is along circumferentially being processed with the second circular groove 20.The other end of switch bearing pin 19 inserts in the second circular groove 20.
As shown in Figure 4, for switch 16 another embodiment with 19 designs of switch bearing pin, be hinged with rotating shaft 22 on the sidewall of switch bracket 15.The outside face of rotating shaft 22 is vertically welded with along its length switch and re-packs 23.One end of switch bearing pin 19 vertically is against switch and re-packs on one of them face of 23, and the contact 18 of switch 16 vertically is against switch and re-packs on 23 another one face.
Shown in Fig. 2, during use, work as Lift out of order, when lift car or counterweight continue to glide, while striking the dash plate 35 at the utility model oleo gear top, piston barrel 6 moves downward, and the fluid in pressure cylinder 2 overflows in piston barrel 6 by the cutoff port on restrictor ring 30 and piston 4.When piston barrel 6 moves down, the end cap 7 be fixed on piston barrel 6 presses down Compress Spring 11, the the second circular groove 20 interior switch bearing pins 19 that are trapped in piston barrel 6 are pushed out the second circular groove 20, it touches the contact 18 of switch 16, open switch 16, make towing machine outage, lift car or under the hydraulic action that focuses on fluid, reduced the impulsive force of decline process, lift car or counterweight have been relaxed and drop to the elevator hoistways bottom.After lift car or counterweight leave the dash plate 35 of oleo gear, Compress Spring 11 resets piston barrel 6 fully, and the contact 18 of switch 16 automatically resets, and connects circuit, makes it in normal use state.
The above embodiment is described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite that does not break away from the utility model design spirit; various distortion and improvement that the common engineering staff in this area make the technical solution of the utility model, all should fall in the definite protection domain of claims of the present utility model.
Claims (6)
1. an oleo gear, comprise base plate (1), be welded with pressure cylinder (2) above described base plate (1), the upper end Bonding pressure cylinder swivel nut (3) of described pressure cylinder (2), piston (4) is installed at the inner chamber middle part of described pressure cylinder (2), be provided with piston ring (5) between described piston (4) and pressure cylinder (2), the upper end of described piston (4) connects piston barrel (6), pressure cylinder swivel nut (3) is passed afterwards in the upper end of described piston barrel (6) and end cap (7) is tightly connected, the top connection dash plate (35) of described end cap (7), between described pressure cylinder swivel nut (3) and piston barrel (6), O RunddichtringO (8) is installed, the upper surface of described base plate (1) vertically connects adjust bar (9), the upper end of described adjust bar (9) is successively through piston (4) and spring perch (10), described spring perch (10) is placed on the step surface on adjust bar (9) top, between described end cap (7) and spring perch (10), Compress Spring (11) is installed, it is characterized in that: between described spring perch (10) and piston (4), be spaced, the outside face middle part of described piston barrel (6) is along being circumferentially with the first circular groove (12), elastic spring (13) is installed in described the first circular groove (12), the upper surface of described elastic spring (13) is against the lower surface of pressure cylinder swivel nut (3).
2. oleo gear as claimed in claim 1, is characterized in that: be provided with copper guide ring (14) between described pressure cylinder swivel nut (3) and piston barrel (6), sliding block joint between described piston barrel (6) and copper guide ring (14).
3. oleo gear as claimed in claim 1 or 2, it is characterized in that: the outside face of described pressure cylinder swivel nut (3) is connected with switch bracket (15), switch (16) is installed on described switch bracket (15), the axis of described switch (16) is vertical with the axis of pressure cylinder swivel nut (3), the sidewall of described pressure cylinder swivel nut (3) is provided with the first through hole (17), the switch bearing pin (19) that one end can contact with the contact (18) of switch (16) is installed in described the first through hole (17), the outside face of described piston barrel (6) is along being circumferentially with the second circular groove (20), the other end of described switch bearing pin (19) inserts in the second circular groove (20).
4. oleo gear as claimed in claim 3, it is characterized in that: the inner chamber of described the first through hole (17) is equipped with axle sleeve (21), described switch bearing pin (19) is installed in axle sleeve (21), between described switch bearing pin (19) and axle sleeve (21), O type the second seal ring (33) is installed.
5. oleo gear as claimed in claim 4, it is characterized in that: be hinged with rotating shaft (22) on the sidewall of described switch bracket (15), the outside face of described rotating shaft (22) is vertically welded with switch re-pack (23) along its length, one end of described switch bearing pin (19) vertically is against switch and re-packs on one of them face of (23), and the contact (18) of described switch (16) vertically is against switch and re-packs on the another one face of (23).
6. oleo gear as claimed in claim 5, it is characterized in that: the center of described piston (4) is provided with the stepped appearance cutoff port that adjust bar (9) passes, described cutoff port is from bottom to top successively by cylindrical second, three, four-way hole (24, 25, 26) form, described second, four-way hole (24, 26) diameter all is greater than the diameter of third through-hole (25), the bottom of described the second through hole (24) is along being circumferentially with the 3rd circular groove (27), in described the 3rd circular groove (27), back-up ring (28) is installed, the center of described back-up ring (28) is provided with the fifth hole (29) that adjust bar (9) passes, restrictor ring (30) is installed in described the second through hole (24), described restrictor ring (30) be positioned at back-up ring (28) above, the center of described restrictor ring (30) is provided with the 6th through hole (31) that adjust bar (9) passes, the surface of described restrictor ring (30) is along circumferentially being evenly equipped with several oil flow holes (34), the described the 3rd, five, six through holes (25, 29, 31) diameter all is greater than each cross-sectional diameter on adjust bar (9).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220567460 CN202936056U (en) | 2012-11-01 | 2012-11-01 | Oil pressure buffer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220567460 CN202936056U (en) | 2012-11-01 | 2012-11-01 | Oil pressure buffer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202936056U true CN202936056U (en) | 2013-05-15 |
Family
ID=48320308
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220567460 Expired - Lifetime CN202936056U (en) | 2012-11-01 | 2012-11-01 | Oil pressure buffer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202936056U (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088951A (en) * | 2014-07-02 | 2014-10-08 | 杨浩 | Shock absorber |
| CN106884918A (en) * | 2017-03-24 | 2017-06-23 | 杨益文 | A kind of spiral energy-consumption damper |
| CN107720479A (en) * | 2017-09-26 | 2018-02-23 | 河北东方富达机械有限公司 | A kind of buffer of elevator |
| CN108861948A (en) * | 2018-08-16 | 2018-11-23 | 镇江朝阳机电科技有限公司 | A kind of high leakproofness oil buffer |
| CN108996359A (en) * | 2018-08-16 | 2018-12-14 | 镇江朝阳机电科技有限公司 | A kind of oil buffer |
| CN108996360A (en) * | 2018-08-28 | 2018-12-14 | 凯斯博电梯有限公司 | A kind of hydraulic bjuffer device for oblique elevator |
| CN111322344A (en) * | 2020-04-26 | 2020-06-23 | 中国工程物理研究院总体工程研究所 | Gradual change throttle formula buffer suitable for direction drop test |
| CN111320052A (en) * | 2020-03-10 | 2020-06-23 | 刘奕哲 | Elevator buffer device made of non-metal composite material and product thereof |
| CN113998560A (en) * | 2020-07-28 | 2022-02-01 | 杭州沪宁电梯部件股份有限公司 | Reset triggering mechanism for elevator buffer and elevator buffer |
-
2012
- 2012-11-01 CN CN 201220567460 patent/CN202936056U/en not_active Expired - Lifetime
Cited By (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104088951A (en) * | 2014-07-02 | 2014-10-08 | 杨浩 | Shock absorber |
| CN106884918A (en) * | 2017-03-24 | 2017-06-23 | 杨益文 | A kind of spiral energy-consumption damper |
| CN106884918B (en) * | 2017-03-24 | 2018-09-18 | 杨益文 | A kind of spiral energy-consumption damper |
| CN107720479A (en) * | 2017-09-26 | 2018-02-23 | 河北东方富达机械有限公司 | A kind of buffer of elevator |
| CN107720479B (en) * | 2017-09-26 | 2024-08-09 | 河北东方富达机械有限公司 | Elevator buffer |
| CN108861948A (en) * | 2018-08-16 | 2018-11-23 | 镇江朝阳机电科技有限公司 | A kind of high leakproofness oil buffer |
| CN108996359A (en) * | 2018-08-16 | 2018-12-14 | 镇江朝阳机电科技有限公司 | A kind of oil buffer |
| CN108996360A (en) * | 2018-08-28 | 2018-12-14 | 凯斯博电梯有限公司 | A kind of hydraulic bjuffer device for oblique elevator |
| CN111320052A (en) * | 2020-03-10 | 2020-06-23 | 刘奕哲 | Elevator buffer device made of non-metal composite material and product thereof |
| CN111322344A (en) * | 2020-04-26 | 2020-06-23 | 中国工程物理研究院总体工程研究所 | Gradual change throttle formula buffer suitable for direction drop test |
| CN113998560A (en) * | 2020-07-28 | 2022-02-01 | 杭州沪宁电梯部件股份有限公司 | Reset triggering mechanism for elevator buffer and elevator buffer |
| CN113998560B (en) * | 2020-07-28 | 2024-05-07 | 杭州沪宁电梯部件股份有限公司 | Reset trigger mechanism for elevator buffer and elevator buffer |
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Legal Events
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130515 |