CN202251811U - Resin gear wheel - Google Patents
Resin gear wheel Download PDFInfo
- Publication number
- CN202251811U CN202251811U CN2011203229669U CN201120322966U CN202251811U CN 202251811 U CN202251811 U CN 202251811U CN 2011203229669 U CN2011203229669 U CN 2011203229669U CN 201120322966 U CN201120322966 U CN 201120322966U CN 202251811 U CN202251811 U CN 202251811U
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- Prior art keywords
- plastic gear
- ring
- mould
- gear
- gear wheel
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Abstract
The utility model provides a resin gear wheel, wherein a circular gear wheel is arranged on the periphery of the resin gear wheel; a shaft insert hole formed by a cylindrical hollow part is formed at the center of the resin gear wheel; a convex reinforcing annular rib is arranged at the periphery of the shaft insert hole; and annular pouring gate cut-off part lower than the reinforcing annular rib is arranged on the inner side of the reinforcing annular rib and between the reinforcing annular rib and the shaft insert hole. A defect part of a welding seam is prevented from being formed through the annular pouring gate cut-off part; furthermore, as uniform filling from the center can be achieved, the precision of the teeth-shape of the gear wheel can be improved, and the resin gear wheel of high quality can be manufactured; as a flow passage is cut off in the die, the follow-up procedure is avoided, and the cost is greatly reduced; and as a hot pouring channel is adopted, the flow passage can be very small as compared with the cold pouring channel, and the waste material is reduced.
Description
Technical field
The utility model relates to and a kind ofly possesses circular gear in periphery, and has the plastic gear of the shaft insertion hole that is formed by columned cavity at the center.
Background technique
In the past, plastic gear mainly used resin to flow into mould, behind resin solidification with its cheapness and good injection molding forming mode of producibility of taking out from mould.
And the above-mentioned resin that makes flows into the multiple spot point cast gate shown in Figure 15 that the interior common employing of mode of mould does not need the reprocessing of cutting off of cast gate and gate vestiges.In this mode, be provided with and be used for resin is distributed and makes it flow to the runner 101a of each cast gate.At this, runner 101a can't use as product, therefore discards as waste material.The volume of this runner 101a is big more, and cost is high more, thereby pursues the volume-diminishedization of runner.
And, shown in figure 16, in multiple spot point cast gate 109, between cast gate, there is the interflow of resin, thereby produces the weld seam (weld) 110 of the defective that becomes reduction in strength.This reduction in strength becomes great defective on the gear that carries out transmission of torque, therefore avoid weld seam to become problem.In addition, owing to do not begin to fill equably from central authorities, so the tooth-formation of gear precision worsens.
At this, as an example of the method for avoiding weld seam, shown in Figure 3 like japanese kokai publication hei 8-145146 communique uses the cast gate through dish-type to make resin 1 inflow of central authorities from the product upper surface, and do not produce the forming mode etc. of weld seam.
[patent documentation 1] japanese kokai publication hei 8-145146 communique
In this mode in the past, owing to stop up the central hole of the installation of gear, therefore also as putting down in writing in the document, need the sprue and the dish cast gate of formed article be excised.At this, the method for excision is record especially not, but can know according to the shape shown in Figure 3 of above-mentioned patent documentation, and the ground plane width of dish cast gate and product is wide and thickness is also thick.In this kind structure, need be after shaping through implementing to be used to cut off the machining of sprue and dish cast gate with take out different operations from mould, operation property is bad.
The model utility content
The purpose of the utility model is to work hard in order before taking out formed article from mould, to excise sprue and dish cast gate, thereby obtains the good plastic gear of producibility, and the result can obtain cheap plastic gear.
To achieve these goals; In the utility model; A kind of plastic gear is provided, possesses circular gear, have the shaft insertion hole that forms by columned cavity at the center in periphery; The reinforcement cyclic rib that has convex around the said shaft insertion hole, at said reinforcement cyclic rib inboard and and said shaft insertion hole between have the low ring-type gate cutting portion of height of the said reinforcement cyclic rib of aspect ratio.
In addition, particularly, in above-mentioned plastic gear, have two different circular gears of size in periphery.
In addition, particularly, in above-mentioned plastic gear, the bi-side of said reinforcement cyclic rib are that the cross section of tilted shape and said reinforcement cyclic rib is trapezoidal.
In addition, the mould of the above-mentioned plastic gear that is shaped constitutes profile than the big conical sprue of said ring-type cast gate profile in said ring-type cast gate one, thin shape in the middle of said ring-type cast gate forms.
The model utility effect
In the utility model that constitutes like this, owing in mould, carry out the excision of runner, therefore do not need subsequent handling, can realize the cost degradation of plastic gear.Because the penetrating mechanism that need formed article not ejected from mould, therefore operation property at that point also improves, and cost also reduces.
Description of drawings
Fig. 1 is the stereogram of embodiment 1 plastic gear.
Fig. 2 is the side view of embodiment 1 plastic gear.
Fig. 3 is the A-A sectional view of embodiment 1 plastic gear.
Fig. 4 is the P part enlarged view of embodiment 1 plastic gear.
Fig. 5 is the Q part enlarged view of embodiment 1 plastic gear.
Fig. 6 is the inner process drawing of forming die of embodiment 1 plastic gear.
Fig. 7 is the inner process drawing of forming die of embodiment 1 plastic gear.
Fig. 8 is the inner process drawing of forming die of embodiment 1 plastic gear.
Fig. 9 is the inner process drawing of forming die of embodiment 1 plastic gear.
Figure 10 is the inner process drawing of forming die of embodiment 1 plastic gear.
Figure 11 is the inner process drawing of forming die of embodiment 1 plastic gear.
Figure 12 is the inner process drawing of forming die of embodiment 2 plastic gear.
Figure 13 is the inner process drawing of forming die of embodiment 2 plastic gear.
Figure 14 is the inner process drawing of forming die of embodiment 2 plastic gear.
Figure 15 is the stereogram of existing plastic gear.
Figure 16 is the plan view of existing plastic gear.
Figure 17 is the A-A sectional view of embodiment 3 plastic gear.
Symbol description:
1 plastic gear
The 1a runner
2 large diameter gears
3 small-diameter gears
4 shaft insertion holes
5,6,8 planar surface portion
7 strengthen cyclic rib
7a, 7b tilt
9 ring-type gate cutting portions
10 potting resins
11 hot runners
12 fixed moulds
13 flow path portion
14 movable platens
15 die cavities
16 moveable dies
17 centrepins
18 ring-type cast gates
19 arms
20 absorption arms
21,51, P, Q, R, Z position
50 movably insert
101 existing type plastic gears
101a has the type runner now
102 existing type large diameter gears
103 existing type small-diameter gears
109 multiple spot point cast gates
110 weld seams
The A cross section
The S direction
Embodiment
Below, with reference to accompanying drawing, the preferred embodiment of the utility model is described.
[embodiment 1]
Fig. 1 representes the stereogram as the plastic gear 1 after the taking out from mould of first embodiment of the plastic gear 1 of the utility model; Fig. 2 representes side view; Fig. 3 representes the A-A sectional view, and Fig. 4 representes P part enlarged view, and Fig. 5 representes the observed partial enlarged drawing from Q.
Structure as plastic gear 1; Possess two different circular gears of size (large diameter gear 2, small-diameter gear 3) in periphery; Has the shaft insertion hole 4 that forms by columned cavity at the center; The reinforcement cyclic rib 7 that around said shaft insertion hole 4, has convex, the cross section that the bi-side of said reinforcement cyclic rib 7 have inclination 7a, 7b and said reinforcement cyclic rib 7 forms trapezoidal shape.And the inboard of the large diameter gear 2 in big footpath forms the planar surface portion 5,6 of the facewidth that highly is lower than large diameter gear 2, forms highly low planar surface portion 8 in the inboard of strengthening cyclic rib 7.At this; Characteristic as the plastic gear of the utility model; At said reinforcement cyclic rib 7 and between the said shaft insertion hole 4 of said reinforcement cyclic rib 7 inboards, the ring-type gate cutting portion 9 that will hang down H than the height of said reinforcement cyclic rib 7 is arranged to convex from said planar surface portion 8.
In addition; In the mould of above-mentioned plastic gear; One constitutes the profile conical runner 1a portion bigger than said ring-type gate cutting portion 9 profiles in said ring-type gate cutting portion 9, thin shape in the middle of said ring-type cast gate forms, and resin material is flowed in the moulds from said ring-type gate cutting portion 9 through said runner 1a portion; When mould takes out plastic gear 1, utilize said ring-type gate cutting portion 9 that plastic gear 1 is cut off with runner 1a portion.
Below, utilize Fig. 6～Figure 11, specify the manufacture process of the plastic gear 1 of the utility model.
At first; The mould structure that is used for mold formed plastic gear 1 is as shown in Figure 6; Mainly constitute by potting resin 10, hot runner 11, fixed mould 12, movable platen 14, moveable die 16, centrepin 17; In movable platen 14, be dug into the position that flow path portion 13 is formed, but in dynamic model, be dug into the die cavity 15 that plastic gear 1 is formed.
Need to prove, in present embodiment 1, used hot runner 11 for the volume that reduces flow path portion 13, as long as but can realize the utility model, also can be the cold pouring channel that does not use hot runner 11.
Then, as shown in Figure 7, the potting resin 10 of filling to mould inside at first flows into to flow path portion 13, flows to die cavity 15 through ring-type cast gate 18.At this moment, owing to be ring-type cast gate 18, thereby potting resin 10 spreads in the form of a ring and flows into, and resin can not take place to collaborate etc. midway, can not produce weld seam yet.The filling of this resin is carried out continuously repeatedly, and is as shown in Figure 8, is full of by potting resin 10 in the die cavity 15, and plastic gear 1 is shaped with runner 1a integratedly.After potting resin 10 solidifies, as shown in Figure 9, mould is carried out die sinking.At this, on movable platen 14, the position of the ring-type cast gate of runner 1a becomes the thin following component R that digs, thus plastic gear 1 with the state puted up to movable platen 14 from the moveable die 16 and centrepin 17 demouldings.
Shown in figure 10, the knockout machine that plastic gear 1 is taken out from mould possesses the arm 19 that cuts off runner 1a and the absorption arm 20 of polymeric adsorbent gear 1.At this; It is narrower than the shaft insertion hole 4 of plastic gear 1 that arm 19 is set at profile, is pressed into from the open side runner 1a of said shaft insertion hole 4, is then depressed on the runner 1a; 21 cut off runner 1a from plastic gear 1 at the thinnest ring-type cast gate position of the thickness of runner 1a, eject from movable platen 14.At this moment, strengthen cyclic rib 7, therefore on the function of plastic gear 1, can not become obstacle, need not carry out gate vestiges and handle owing in advance the height setting of ring-type gate cutting portion 9 is become to be lower than.
Simultaneously, under the state that 20 pairs of plastic gears 1 of absorption arm adsorb, earlier arm 19 is extracted from said shaft insertion hole 4, shown in figure 11 then, absorption arm 20 is removed out from movable platen 14, and plastic gear 1 is taken out from mould.At this, because the reinforcement cyclic rib 7 of plastic gear 1 has the trapezoidal shape of inclination 7a, 7b for both sides, so can not take place to hang to the card of movable platen 14, release property improves.As replenishing, in mould, also can utilize the vertical wall reinforcement cyclic rib that is shaped, but because the contraction of the resin of filling and mould produces the power of lock ring formed article, under the adsorption force of knockout machine, might take place can't the demoulding unfavorable condition.
Thus, as the effect of present embodiment 1, through ring-type gate cutting portion 9, the rejected region of weld seam can not take place.And; Owing to can fill equably from central authorities, therefore also can realize the raising of tooth-formation of gear precision, can make high-quality plastic gear 1; In mould, carry out the excision of runner 1a; And carry out simultaneously with the taking-up of plastic gear 1, therefore do not need subsequent handling, and can realize significantly cost degradation.In addition, owing to adopted hot runner 11, therefore compare with cold pouring channel, runner 1a can be minimum, also can realize the minimizingization of waste material.
In forming die, in the mould die sinking, dig, and plastic gear 1 is extracted from moveable die 16, so mould can save and ejects product construction through the following of runner 1a.Thus, mould structure is simplified, and can cut down the Mold Making expense significantly.
[embodiment 2]
Figure 12～Figure 14 representes second embodiment of the plastic gear 1 of the utility model.
Structure as plastic gear 1; Same with embodiment 1; Possess two different circular gears of size (large diameter gear 2, small-diameter gear 3) in periphery; Have the shaft insertion hole 4 that forms by columned cavity at the center, the reinforcement cyclic rib 7 that around said shaft insertion hole 4, has convex, the cross section that the bi-side of said reinforcement cyclic rib 7 have inclination 7a, 7b and said reinforcement cyclic rib 7 forms trapezoidal shape.And the inboard of the large diameter gear 2 in big footpath forms the planar surface portion 5,6 of the facewidth that highly is lower than large diameter gear 2, forms highly low planar surface portion 8 in the inboard of strengthening cyclic rib 7.At this; Characteristic as the plastic gear of the utility model; At said reinforcement cyclic rib 7 and between the said shaft insertion hole 4 of said reinforcement cyclic rib 7 inboards, the ring-type gate cutting portion 9 that will hang down H than the height of said reinforcement cyclic rib 7 is arranged to convex from said planar surface portion 8.
In addition; In the mould of above-mentioned plastic gear; One constitutes the profile conical runner 1a portion bigger than said ring-type gate cutting portion 9 profiles in said ring-type gate cutting portion 9, thin shape in the middle of said ring-type cast gate forms, and resin material is flowed in the moulds from said ring-type gate cutting portion 9 through said runner 1a portion; When mould takes out plastic gear 1, utilize said ring-type gate cutting portion 9 that plastic gear 1 is cut off with runner 1a portion.
Below, the manufacture process of the plastic gear 1 of detailed description the utility model.
At first; The mould structure that is used for mold formed plastic gear 1 is shown in figure 12; Mainly constitute by potting resin 10, hot runner 11, fixed mould 12, movable platen 14, moveable die 16, centrepin 17; In movable platen 14, be dug into the position of shaping flow path portion 13, but and in dynamic model, be dug into the die cavity 15 of shaping resin gear 1.At this, especially in embodiment 2, it is characterized in that, in movable platen 14, the position that forms runner 1a portion and ring-type gate cutting portion 9 and strengthen cyclic rib 7 formed movably insert 50.Need to prove, in present embodiment 1, used hot runner 11, but, also can be the cold pouring channel that does not use hot runner 11 as long as realize the utility model for the volume that reduces flow path portion 13.
Then, same with embodiment 1, the potting resin 10 of filling to mould inside at first flows into to flow path portion 13, flows to die cavity 15 through ring-type cast gate 18.At this moment, owing to be ring-type cast gate 18, thereby potting resin 10 spreads in the form of a ring and flows into, and resin can not take place to collaborate etc. midway, can not produce weld seam yet.The filling of this resin is carried out continuously repeatedly, be full of by potting resin 10 in the die cavity 15, thereby plastic gear 1 is shaped with runner 1a integratedly.
After potting resin 10 solidifies, mould is carried out die sinking.At this, on movable platen 14, the position of the ring-type cast gate of runner 1a becomes the thin following component R that digs, thus plastic gear 1 with the state puted up to movable platen 14 from the moveable die 16 and centrepin 17 demouldings.
In die sinking, making movably inserts 50 moves to fixed side S; Forming the runner 1a that digs is down movably inserted and 50 is pulled; At the thinnest ring-type cast gate position 51 of the thickness of runner 1a plastic gear 1 is cut off with runner 1a, at this moment, owing in advance the height setting of ring-type gate cutting portion 9 is become to be lower than to strengthen cyclic rib 7; Therefore on the function of plastic gear 1, can not become obstacle, need not carry out gate vestiges and handle.
Need to prove,, can be spring, cylinder, linkage mechanism etc., not special the qualification as movably inserting 50 movable method.
Shown in figure 14, the knockout machine that plastic gear 1 is taken out from mould possesses the arm 19 that ejects runner 1a and the absorption arm 20 of polymeric adsorbent gear 1.At this, it is thinner than the shaft insertion hole 4 of plastic gear 1 that arm 19 is set profile for, is pressed on the runner 1a that cuts off from said shaft insertion hole 4, and runner 1a 50 is ejected from movably inserting.
Simultaneously, simultaneously, under the state that 20 pairs of plastic gears 1 of absorption arm adsorb, earlier arm 19 is extracted from said shaft insertion hole 4, adsorbed arm 20 then and remove out, plastic gear 1 is taken out from mould from movable platen 14.
Thus, as the effect of present embodiment 2,, can not produce the rejected region of weld seam through ring-type gate cutting portion 9.And, owing to can fill equably, therefore also can realize the raising of tooth-formation of gear precision from central authorities; Can make high-quality plastic gear 1; In the die sinking of mould, carry out the excision of runner 1a, therefore do not need subsequent handling, and can realize significantly cost degradation.In addition, owing to adopted hot runner 11, therefore compare with cold pouring channel, runner 1a can be minimum, also can realize the minimizingization of waste material.
In forming die, in the mould die sinking, dig, and plastic gear 1 is extracted from moveable die 16, so mould can save and ejects product construction through the following of runner 1a.Thus, mould structure is simplified, and can cut down the Mold Making expense significantly.
Effect as the plastic gear of the utility model through the ring-type cast gate, can not produce the rejected region of weld seam.And, owing to can fill equably, therefore also can realize the raising of tooth-formation of gear precision from central authorities, can make high-quality plastic gear, in mould, carry out the excision of runner, therefore do not need subsequent handling, and can realize significantly cost degradation.In addition, owing to adopted hot runner, therefore compare with cold pouring channel, runner can be minimum, also can realize the minimizingization of waste material.
In forming die, in the mould die sinking, dig, and plastic gear is extracted from moveable die, so mould can save and ejects product construction through the following of runner.Thus, mould structure is simplified, and can cut down the Mold Making expense significantly.
In addition, through the ring-type cast gate, can not produce the rejected region of weld seam.
And, owing to can fill equably, therefore also can realize the raising of tooth-formation of gear precision from central authorities, can make high-quality plastic gear.
In addition, in mould, carry out the excision of runner, therefore do not need subsequent handling, and can realize significantly cost degradation.
In addition, owing to adopted hot runner, therefore compare with cold pouring channel, runner can be minimum, also can realize the minimizingization of waste material.
Because therefore the penetrating mechanism that need formed article not ejected from mould also can improve operation property at that point, reduces cost.
[the 3rd embodiment]
Figure 17 representes the 3rd embodiment.When ring-type gate cutting portion 9 and 171 coverings of 71 quilt covers of the groove between the reinforcement cyclic rib 7 of its formation, groove 71 is as taking in the groove that is arranged on the anticreep projection 171 of covering the plastic gear 1 on 170 and playing a role.Thus, cover 170 becomes easy with the location of gear 1.
Conclude the characteristic of present embodiment, be described below.
1. as the characteristic of plastic gear, and there is the gate cutting portion (this cut-out portion is lower than strengthening cyclic rib) of ring-type in (1) in the inboard of strengthening cyclic rib around shaft insertion hole.
2. there is the gate cutting portion of ring-type in the gear forming side end that bears portion at central shaft.
3. between centrepin and upper die tooling, be formed with the former in thin end gate space.Characteristic as protecting as method is described below.
4. in the method for said plastic gear of being shaped, resin material is flowed in the mould from said ring-type cast gate through said sprue, when mould takes out formed article, the place cuts off formed article at said ring-type cast gate.
5. particularly, the taking-up while with formed article, in mould, said ring-type cast gate and formed article are cut off in addition.
6. in addition, particularly, be provided with at said mould and movably insert, movably insert in that the taking-up front opening of formed article is said, said ring-type cast gate and formed article are cut off what said ring-type cast gate and sprue were shaped.
Below, enumerate mode of execution.
Mode of execution 1
A kind of shaping die, first manufacturing to the described plastic gear in arbitrary aspect of the third aspect that it is used for the utility model is characterized in that,
Constitute profile than the big conical sprue of said ring-type cast gate profile in said ring-type cast gate one, thin shape in the middle of said ring-type cast gate forms.
Mode of execution 2
According to the described shaping die that is used for the plastic gear manufacturing of the first aspect of the utility model, it is characterized in that,
In said mould, be provided with movably inserting with said ring-type cast gate and sprue shaping.
Mode of execution 3
A kind of production method, first manufacturing to the described plastic gear in arbitrary aspect of the third aspect that it is used for the utility model is characterized in that,
Said resin material is flowed in the mould from said ring-type cast gate through said sprue, and during from mould taking-up formed article, the place cuts off formed article at said ring-type cast gate.
Mode of execution 4
Production method according to mode of execution 3 described plastic gears is characterized in that,
The taking-up while with formed article, in said mould, said ring-type cast gate and formed article are cut off.
Mode of execution 5
A kind of production method of plastic gear, it has used mode of execution 2 described moulds, it is characterized in that,
Before taking out formed article from said mould, open and saidly movably insert, said ring-type cast gate and formed article are cut off.
Industrial applicibility
The utility model be applicable to solid of rotation such as forming motor or use solid of rotation angle, position, displacement carry out sensing transmitting torques such as sensor gear or reduce the reduction gear etc. of rotational speed.For example, the adjustment in the automotive field flows into reduction gear that the rotation of the closure (valve) of air quantity transmits etc.And, get final product so long as solve the problem of the utility model, be not defined as above-mentioned product and can be applicable to other products.
Claims (4)
1. a plastic gear is characterized in that,
Possesses circular gear in periphery; Has the shaft insertion hole that forms by columned cavity at the center; The reinforcement cyclic rib that has convex around the said shaft insertion hole, at said reinforcement cyclic rib inboard and and said shaft insertion hole between have the low ring-type gate cutting portion of height of the said reinforcement cyclic rib of aspect ratio.
2. plastic gear according to claim 1, wherein,
Have two different circular gears of size in periphery.
3. plastic gear according to claim 1 and 2, wherein,
The bi-side of said reinforcement cyclic rib are that the cross section of tilted shape and said reinforcement cyclic rib is trapezoidal.
4. plastic gear according to claim 1 is characterized in that,
Between said reinforcement cyclic rib and ring-type gate cutting portion, form groove, in this groove, take in the projection of the cover side that covers said plastic gear.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203229669U CN202251811U (en) | 2011-08-31 | 2011-08-31 | Resin gear wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203229669U CN202251811U (en) | 2011-08-31 | 2011-08-31 | Resin gear wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202251811U true CN202251811U (en) | 2012-05-30 |
Family
ID=46113055
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011203229669U Expired - Lifetime CN202251811U (en) | 2011-08-31 | 2011-08-31 | Resin gear wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202251811U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106313423A (en) * | 2015-07-03 | 2017-01-11 | 中西金属工业株式会社 | Method for manufacturing a resin gear with a metal core |
| CN108688769A (en) * | 2017-03-29 | 2018-10-23 | 株式会社岛野 | Bicycle chain wheel assembly |
| CN112673195A (en) * | 2018-09-07 | 2021-04-16 | 日立安斯泰莫株式会社 | Method for manufacturing rotary power transmission member |
-
2011
- 2011-08-31 CN CN2011203229669U patent/CN202251811U/en not_active Expired - Lifetime
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106313423A (en) * | 2015-07-03 | 2017-01-11 | 中西金属工业株式会社 | Method for manufacturing a resin gear with a metal core |
| CN106313423B (en) * | 2015-07-03 | 2020-08-11 | 中西金属工业株式会社 | Method for manufacturing resin gear with metal core |
| CN108688769A (en) * | 2017-03-29 | 2018-10-23 | 株式会社岛野 | Bicycle chain wheel assembly |
| CN112673195A (en) * | 2018-09-07 | 2021-04-16 | 日立安斯泰莫株式会社 | Method for manufacturing rotary power transmission member |
| CN112673195B (en) * | 2018-09-07 | 2024-03-19 | 日立安斯泰莫株式会社 | Method for manufacturing rotary power transmission member |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20120530 |
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| CX01 | Expiry of patent term |