CA2413145C - Pedestal shear pad - Google Patents
Pedestal shear pad Download PDFInfo
- Publication number
- CA2413145C CA2413145C CA2413145A CA2413145A CA2413145C CA 2413145 C CA2413145 C CA 2413145C CA 2413145 A CA2413145 A CA 2413145A CA 2413145 A CA2413145 A CA 2413145A CA 2413145 C CA2413145 C CA 2413145C
- Authority
- CA
- Canada
- Prior art keywords
- pad assembly
- elastomer
- shear pad
- shims
- shear
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B61—RAILWAYS
- B61F—RAIL VEHICLE SUSPENSIONS, e.g. UNDERFRAMES, BOGIES OR ARRANGEMENTS OF WHEEL AXLES; RAIL VEHICLES FOR USE ON TRACKS OF DIFFERENT WIDTH; PREVENTING DERAILING OF RAIL VEHICLES; WHEEL GUARDS, OBSTRUCTION REMOVERS OR THE LIKE FOR RAIL VEHICLES
- B61F5/00—Constructional details of bogies; Connections between bogies and vehicle underframes; Arrangements or devices for adjusting or allowing self-adjustment of wheel axles or bogies when rounding curves
- B61F5/26—Mounting or securing axle-boxes in vehicle or bogie underframes
- B61F5/30—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes
- B61F5/305—Axle-boxes mounted for movement under spring control in vehicle or bogie underframes incorporating rubber springs
Abstract
A shear pad assembly for use between a rail car side frame pedestal and the rail car roller bearing adapter includes an upper plate formed and adapted to seat the side frame pedestal and a lower plate, spaced from the upper plate and formed and adapted to seat on the roller bearing adapter. There is an elastomer positioned in the space between the upper plate and the lower plate, with the elastomer having a generally uniform thickness throughout a substantial portion of the space between the plates. There are a pair of spaced metal shims, each extending parallel to a side frame, being adjacent an edge of the elastomer, and being located generally intermediate the upper and lower plates.
Description
Sid Car 134 PED~F. CAL SHEA~~AD
The Field: of the"~~vention toooxl The present invention relates o a shear pad assembly adapted to be positioned between a rail car side frame pedeStaJ and the rail car roller bearing adapter, and more specifically, to such a shear pad assembly which includes an elastomer positioned between spaced upper and lowerplates and metal shims for reinforcing and supporting~the elastomer.
The Field: of the"~~vention toooxl The present invention relates o a shear pad assembly adapted to be positioned between a rail car side frame pedeStaJ and the rail car roller bearing adapter, and more specifically, to such a shear pad assembly which includes an elastomer positioned between spaced upper and lowerplates and metal shims for reinforcing and supporting~the elastomer.
[0002] Sh~r pads have Iong been known in the rail car art for use in supporting the truck side frames on the wheelsets. Initially, such shear pad assezttblies utilized metal wear surfaces which permitted limited latearal and longitudinal movement of the side frames relative to the ,~
roller bearing adapteors positioned on the wheelsets. Subsequently, elastomeric mountings took the place of the metal wear surfaces to provide conuol fle7tibility in all directions, particularly for self steering rail car trucks.
roller bearing adapteors positioned on the wheelsets. Subsequently, elastomeric mountings took the place of the metal wear surfaces to provide conuol fle7tibility in all directions, particularly for self steering rail car trucks.
[0003) U.S. Patent 5,23'7,933 improved the elastorneric mounting by the addition of a single metal shim which ex~ogenerally throughout the elastomer with the stated advantage of significantly increasing the service life of the shear pad. acre aspect of the shear pad described in. the '933 patent was to incise the thickness of the eiastomexic layer adjacent its edge, as comlaared with the thickness at the centeoc of the elastomcT to xeduce the edge strains imposed on the shear pad. This stated advantage, however; did not prove o be correct in~that the reduction of the elastomer thickness adjacent its center resented in separation~of the elastomer under prolonged loading The present invention providos an elastomer which is more uniform throughout the cross section of its thickness, resulting in more uniform shear which has the effect of spreading the shear load imposed on the pad more uniifoxmly across the pad, elvminaring the concen~cation of shear strain present in pads of the type shown in the '933 patent.
~ummar?r of the Invention j000~t] The present invention relates to shear pad assemblies for use in rail car trucks to support the side frames on the wheelset roller bearing adapters and more specifically, to a shear pad for the use described which has an improved reinforced elastomer.
[0005] A prvm~aiy purpose of the invention ;is to provide a shear pad assembly as described in which the elastomer, positioned between upper and: lower plates of the shear pad assembly, has a pair of spaced reinforcing shims.
j000f] Another purpose of the invention is ~to provide a shear pad assembly as described in which the elastomer is substantially uniform across its cross sectional area to spread the shear Load. relatively uniformly across the pad.
j000T1 Another purpose of the invention is to provide a shear pad assembly which does not concentrate the shear load at the center area of the pad.
j000~8] Another purpose of the invention is to provide a shear pad assembly having shims to stif~a the elastomer edges so that the overall stiff~aess of the pad is geue~cally uniform.
j0409] Another purpose of the invention is to provide a shear pad assembly as described in which the ma~ciimua shear straui is zeduced, but.the overall sheaoc strain is more uniform throughout the thiclmess of the cross sectional area of the elastomer.
[OOIO] C3ther purposes will appear in the ensuing specification, drawings and claims.
Brief Description of the D~awin~
[OOIIj The invention is illustrated diagrammatically in the following drawings wherein:
[0012j Fig. 1 is a top plan view of a rail car truck illustrating the various comgonenis thereof;
(00~3j Fig. Z is a pa;rial exploded side view of the side frame; shear pad and roller bearing adapter forming apart of the rail car track of Pig. 1;
I0014j Fig. 3 is a top plan view of the shear pad;
(0015] Fig. 4 is a section along plane 4-r4 of Fig: 3; and j0016J Fib. 5 is a front view of the shear pad assembly of Figs. 3: and 4.
Description of the Preferred Em'ho~litxle~nt [001?J The present invention relates to an elastbmeric shear pad assembly for use in tuounting the side frames of a three-piece rail car truck to the roller bearing adapters which rest on the wheelsets. Such assemblies have long been known in the art and they provide control fleRibility inn all directions and have substantial advantage over previously-used metal to sliding surfaces or simiHar wear surfaces. Such advantages include reduced lateral and vertical shocks to the roller bearings, increased system dayp'tng, elimination of wear between the roller bear;ng adapter crown surface and the side fra~m~e pedestal jaw roof, reduction in rail car wheel wear, reduced rail wear, and improved life of the rraczc components.
[0018] U.S. Patent 5,237,933 discloses a shear pad asse~ly utilizing an elasiomer between the upper and lower plates of the assembly; with -the elastonaer being reinforced by a metal shim which extends generally midway through the elastamer. One of the perceived advantages of the shear pad assembly in the '933 patent was to decrease the compression induced edge strains by increasing the thickness of the elastomer toward its edges, while reducing the thickness of the elastomer in the centex of ~s shear pad assembly: The '933 patent stated that au optimum ratio of the thicknesses of the edge of the elastomer to the center is as high as 1.3 zo 1.
[00i9] Shear pad assemblies of the type shown in the '933 patent hare been determine to fail in the center under substantial shear load; particularly, there has been noticed a separation of the elastomer because the pad is thinnest at its center, but yet the rubber or esastomer in the center is doing the nwst work in resisting shear and compression loads. The present invention.
substantially improves the shear pad assembly of the '933 patent by Providing a generally uniform thickness of they elastomer throughout its cross sectional area and reinforcing the edges by ate; independent shims, which are positioned along the pad edges and are generally parallel to tl~e diarection of the side frames. With this construction the eIastomer is more uniform throughout the cross section of the pad; with the result that. the elastomer is more nniforna in shear. This in e~'ect spzeads the shear load relatively uniformly across the pad and does not concxntrate it in the center. The elimination of shims in the center of the shear pad may we~en the center in stiffness, hut by stiffening the: edges, the overall stiffness of the shear pad is uniform across its width. The maximum shear strain is reduc~l; but the shear strain is more unifoxm thxxoughout its width, creating a, shear pad assembly which has a substantially extended life over those known in the prior art. : ~ =
[00?.Q] A further advantage of the shear pad assembly of the present invention is that it is thi~r is height by approximately 1/8" over that shown in the '933 patent and:
such a reduction in height is important to raivroads, as it insures that there can be a retrofit of the shear pad assembly without having car couplers being non-aligned.
[QOZt] In Fig. 1 a conventional three-piece truck has wheelsets 10 and 12 upon which axe supported side frames 14 and 16. A bolster 38 connects the side frame, as is conventional in rail car trucks of this design. The side frames include side frame pedestals 20 with an opening 22 within which will be located the roller bearing adapter Z4 and a shear pad assembly 26. It should be understood that the portion of the side frame; roller bearing adapter and shear pad assembly shown in Fig. 2 will be gresent at each of the four corners of the txuck shown in Fig.
l . The invention is particularly concerned with the shear pad assembly which is illustrated in detail in Figs. 3, 4 and 5.
[0022] The shear pad assembly includes an upper Plate 30, cmnventionally formed of steel, and having up-turned side edges 32, with the plate 30 forming a seat fox the side frarue pedestal 20.
jQ023J There is a lower steel plate 34; in the shrat pad assembly 26 which is sgaced from the upper plate 30 by a thickness 36: The lower plate 34 witl have down tuned projections 38 at ogposite sides thereof, as particularly illustrated is Fig. 5. The space 36 will be frilled by a suitable elastomer 42 wl3ich will both fill the space 36 and substantially encapsulate both the upper plate 30, its up-anrned edges 32, the lower plate 34 and its down-turned edges 38.
Elastomers to perform this fi~nccioa are well known in the art.
[0024? There are a pair of spaced metal. shims 4f? embedded in the space 36 which is filled by the elastom~e~r, with the shims being essentially parallel to each other;
and parallel to the direction of the side frames 14 and I6. The shims are identical in width, thickness and length and each will be embedded within the elastomer'42: Each shim will have its outer edge 44 outside of the ap-turned edges 32 and inside of the down-turned edges 38.
Directly adjacent and slightly inside of the outer edge 44 of each shim there is a concavity 46 in the ~ elastomez.
Similarly, there is a concavity 48 is the elastamer directly above the shim and generally where the eIastomer joins tbEat portion of it which encapsulates the up-turnal edges 32. Such concavities or contours are useful in minimizing the compression induced edge stzains in the shear pad assembly and are shown in the '933 patent.
[OQ?.53 Of importance is the fact that the elastomer 42 is generally uniform in thickness throughout its cross section area. This provides a more uniform resistance to shear because of the uniform thickness of the elastomeiric material The shims 40 stiffen the edges of the shear pad asserably to resist compression. Althoughthe center of the pad map be slightly weakened in stiffness, the additional stiff -erring: P~rvided at the edges by the shims provide a more uaifoxm stiffness across the cross section of the pad. The maximum shear strain of the pad assembly may be rednced-over that shown is prior art asseanblies for the same function, but the overall shear strain is more unifoxm, zesulting: in a shear pad assembly having substaatiaIly used: life.
[Q026~ The shear pad assembly will be thinner than that of the prior art because of the absence of a shim in the center of the eiastomer: - This reduced thictaaess;
by approximately 0.120" is very advantageous in retrofitting the shear pad assembly to existing rail cars, as it reduces the potential for non-aligned couplers: . ~.
[802?j Whereas the prefl form of the imrention has been shown and described herein, it should be realized tl:aat there may be many modifications, substitutions and altexations thereto.
~ummar?r of the Invention j000~t] The present invention relates to shear pad assemblies for use in rail car trucks to support the side frames on the wheelset roller bearing adapters and more specifically, to a shear pad for the use described which has an improved reinforced elastomer.
[0005] A prvm~aiy purpose of the invention ;is to provide a shear pad assembly as described in which the elastomer, positioned between upper and: lower plates of the shear pad assembly, has a pair of spaced reinforcing shims.
j000f] Another purpose of the invention is ~to provide a shear pad assembly as described in which the elastomer is substantially uniform across its cross sectional area to spread the shear Load. relatively uniformly across the pad.
j000T1 Another purpose of the invention is to provide a shear pad assembly which does not concentrate the shear load at the center area of the pad.
j000~8] Another purpose of the invention is to provide a shear pad assembly having shims to stif~a the elastomer edges so that the overall stiff~aess of the pad is geue~cally uniform.
j0409] Another purpose of the invention is to provide a shear pad assembly as described in which the ma~ciimua shear straui is zeduced, but.the overall sheaoc strain is more uniform throughout the thiclmess of the cross sectional area of the elastomer.
[OOIO] C3ther purposes will appear in the ensuing specification, drawings and claims.
Brief Description of the D~awin~
[OOIIj The invention is illustrated diagrammatically in the following drawings wherein:
[0012j Fig. 1 is a top plan view of a rail car truck illustrating the various comgonenis thereof;
(00~3j Fig. Z is a pa;rial exploded side view of the side frame; shear pad and roller bearing adapter forming apart of the rail car track of Pig. 1;
I0014j Fig. 3 is a top plan view of the shear pad;
(0015] Fig. 4 is a section along plane 4-r4 of Fig: 3; and j0016J Fib. 5 is a front view of the shear pad assembly of Figs. 3: and 4.
Description of the Preferred Em'ho~litxle~nt [001?J The present invention relates to an elastbmeric shear pad assembly for use in tuounting the side frames of a three-piece rail car truck to the roller bearing adapters which rest on the wheelsets. Such assemblies have long been known in the art and they provide control fleRibility inn all directions and have substantial advantage over previously-used metal to sliding surfaces or simiHar wear surfaces. Such advantages include reduced lateral and vertical shocks to the roller bearings, increased system dayp'tng, elimination of wear between the roller bear;ng adapter crown surface and the side fra~m~e pedestal jaw roof, reduction in rail car wheel wear, reduced rail wear, and improved life of the rraczc components.
[0018] U.S. Patent 5,237,933 discloses a shear pad asse~ly utilizing an elasiomer between the upper and lower plates of the assembly; with -the elastonaer being reinforced by a metal shim which extends generally midway through the elastamer. One of the perceived advantages of the shear pad assembly in the '933 patent was to decrease the compression induced edge strains by increasing the thickness of the elastomer toward its edges, while reducing the thickness of the elastomer in the centex of ~s shear pad assembly: The '933 patent stated that au optimum ratio of the thicknesses of the edge of the elastomer to the center is as high as 1.3 zo 1.
[00i9] Shear pad assemblies of the type shown in the '933 patent hare been determine to fail in the center under substantial shear load; particularly, there has been noticed a separation of the elastomer because the pad is thinnest at its center, but yet the rubber or esastomer in the center is doing the nwst work in resisting shear and compression loads. The present invention.
substantially improves the shear pad assembly of the '933 patent by Providing a generally uniform thickness of they elastomer throughout its cross sectional area and reinforcing the edges by ate; independent shims, which are positioned along the pad edges and are generally parallel to tl~e diarection of the side frames. With this construction the eIastomer is more uniform throughout the cross section of the pad; with the result that. the elastomer is more nniforna in shear. This in e~'ect spzeads the shear load relatively uniformly across the pad and does not concxntrate it in the center. The elimination of shims in the center of the shear pad may we~en the center in stiffness, hut by stiffening the: edges, the overall stiffness of the shear pad is uniform across its width. The maximum shear strain is reduc~l; but the shear strain is more unifoxm thxxoughout its width, creating a, shear pad assembly which has a substantially extended life over those known in the prior art. : ~ =
[00?.Q] A further advantage of the shear pad assembly of the present invention is that it is thi~r is height by approximately 1/8" over that shown in the '933 patent and:
such a reduction in height is important to raivroads, as it insures that there can be a retrofit of the shear pad assembly without having car couplers being non-aligned.
[QOZt] In Fig. 1 a conventional three-piece truck has wheelsets 10 and 12 upon which axe supported side frames 14 and 16. A bolster 38 connects the side frame, as is conventional in rail car trucks of this design. The side frames include side frame pedestals 20 with an opening 22 within which will be located the roller bearing adapter Z4 and a shear pad assembly 26. It should be understood that the portion of the side frame; roller bearing adapter and shear pad assembly shown in Fig. 2 will be gresent at each of the four corners of the txuck shown in Fig.
l . The invention is particularly concerned with the shear pad assembly which is illustrated in detail in Figs. 3, 4 and 5.
[0022] The shear pad assembly includes an upper Plate 30, cmnventionally formed of steel, and having up-turned side edges 32, with the plate 30 forming a seat fox the side frarue pedestal 20.
jQ023J There is a lower steel plate 34; in the shrat pad assembly 26 which is sgaced from the upper plate 30 by a thickness 36: The lower plate 34 witl have down tuned projections 38 at ogposite sides thereof, as particularly illustrated is Fig. 5. The space 36 will be frilled by a suitable elastomer 42 wl3ich will both fill the space 36 and substantially encapsulate both the upper plate 30, its up-anrned edges 32, the lower plate 34 and its down-turned edges 38.
Elastomers to perform this fi~nccioa are well known in the art.
[0024? There are a pair of spaced metal. shims 4f? embedded in the space 36 which is filled by the elastom~e~r, with the shims being essentially parallel to each other;
and parallel to the direction of the side frames 14 and I6. The shims are identical in width, thickness and length and each will be embedded within the elastomer'42: Each shim will have its outer edge 44 outside of the ap-turned edges 32 and inside of the down-turned edges 38.
Directly adjacent and slightly inside of the outer edge 44 of each shim there is a concavity 46 in the ~ elastomez.
Similarly, there is a concavity 48 is the elastamer directly above the shim and generally where the eIastomer joins tbEat portion of it which encapsulates the up-turnal edges 32. Such concavities or contours are useful in minimizing the compression induced edge stzains in the shear pad assembly and are shown in the '933 patent.
[OQ?.53 Of importance is the fact that the elastomer 42 is generally uniform in thickness throughout its cross section area. This provides a more uniform resistance to shear because of the uniform thickness of the elastomeiric material The shims 40 stiffen the edges of the shear pad asserably to resist compression. Althoughthe center of the pad map be slightly weakened in stiffness, the additional stiff -erring: P~rvided at the edges by the shims provide a more uaifoxm stiffness across the cross section of the pad. The maximum shear strain of the pad assembly may be rednced-over that shown is prior art asseanblies for the same function, but the overall shear strain is more unifoxm, zesulting: in a shear pad assembly having substaatiaIly used: life.
[Q026~ The shear pad assembly will be thinner than that of the prior art because of the absence of a shim in the center of the eiastomer: - This reduced thictaaess;
by approximately 0.120" is very advantageous in retrofitting the shear pad assembly to existing rail cars, as it reduces the potential for non-aligned couplers: . ~.
[802?j Whereas the prefl form of the imrention has been shown and described herein, it should be realized tl:aat there may be many modifications, substitutions and altexations thereto.
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A shear pad assembly for use between a rail car side frame pedestal and a rail car roller bearing adapter, said shear pad assembly including an upper plate formed and adapted to seat the side frame pedestal, and a lower plate, spaced from said upper plate and formed and adapted to seat on the roller bearing adapter, the upper and lower plates defining a longitudinal centerline;
an elastomer positioned in the space between said upper plate and said lower plate, said elastomer having a generally uniform thickness throughout a substantial portion of the space between said plates, and first and second independent, spaced metal shims, each extending generally parallel to a side frame, being adjacent an edge of the elastomer and laterally spaced from the longitudinal centerline, and being located intermediate the upper and lower plates.
an elastomer positioned in the space between said upper plate and said lower plate, said elastomer having a generally uniform thickness throughout a substantial portion of the space between said plates, and first and second independent, spaced metal shims, each extending generally parallel to a side frame, being adjacent an edge of the elastomer and laterally spaced from the longitudinal centerline, and being located intermediate the upper and lower plates.
2. The shear pad assembly of claim 1 wherein said shims are each generally equal in width.
3. The shear pad assembly of claim 1 wherein said shims are each located generally midway between said upper and lower plates.
4. The shear pad assembly of claim 1 wherein said upper and lower plates are generally encapsulated by the elastomer positioned in the space between said plates.
5. The shear pad assembly of claim 1 wherein said upper plate has generally up-turned edges and said lower plate has generally down-turned edges, with said up-turned and down-turned edges extending generally perpendicular to said shims.
6. The shear pad assembly of claim 1 wherein each of said shims is generally equal in width, with the inner edge of each shim being located inside of the boundary of the upper plate and the outer edge of each shim being located outside of the boundary of the upper plate, each of said shims being substantially covered by said elastomer.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US09/995,541 US6591759B2 (en) | 2001-11-28 | 2001-11-28 | Pedestal shear pad |
| US09/995,541 | 2001-11-28 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2413145A1 CA2413145A1 (en) | 2003-05-28 |
| CA2413145C true CA2413145C (en) | 2010-01-26 |
Family
ID=25541934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA2413145A Expired - Lifetime CA2413145C (en) | 2001-11-28 | 2002-11-28 | Pedestal shear pad |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US6591759B2 (en) |
| CN (1) | CN100377947C (en) |
| AU (1) | AU2002308792B2 (en) |
| BR (2) | BRPI0204884B8 (en) |
| CA (1) | CA2413145C (en) |
| MX (1) | MXPA02011730A (en) |
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| US20060137565A1 (en) * | 2004-12-23 | 2006-06-29 | National Steel Car Limited | Rail road car truck and bearing adapter fitting therefor |
| CN100441458C (en) * | 2005-10-14 | 2008-12-10 | Asf-基斯通公司 | Block bearing sleeve for railway vehicle |
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| US7739961B2 (en) * | 2007-12-21 | 2010-06-22 | Standard Car Truck Company | Low profile shear pad and adapter |
| AU2013200449B2 (en) * | 2007-12-21 | 2017-01-12 | Transportation Ip Holdings, Llc | Low profile shear pad and adapter |
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| US10569790B2 (en) * | 2013-12-30 | 2020-02-25 | Nevis Industries Llc | Railcar truck roller bearing adapter-pad systems |
| US9669846B2 (en) | 2013-12-30 | 2017-06-06 | Nevis Industries Llc | Railcar truck roller bearing adapter pad systems |
| US10358151B2 (en) * | 2013-12-30 | 2019-07-23 | Nevis Industries Llc | Railcar truck roller bearing adapter-pad systems |
| USD753544S1 (en) | 2014-12-05 | 2016-04-12 | Nevis Industries Llc | Adapter pad for railcar truck |
| USD762521S1 (en) | 2014-12-05 | 2016-08-02 | Nevis Industries Llc | Adapter for railcar truck |
| USD753022S1 (en) | 2014-12-05 | 2016-04-05 | Nevis Industries Llc | Adapter pad for railcar truck |
| USD762520S1 (en) | 2014-12-05 | 2016-08-02 | Nevis Industries Llc | Adapter pad for railcar truck |
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| USD753546S1 (en) | 2015-05-13 | 2016-04-12 | Nevis Industries Llc | Adapter pad for railcar truck |
| CN111016949B (en) * | 2015-05-13 | 2021-09-03 | 内维斯工业有限责任公司 | Rail car bogie roller bearing adapter pad system |
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| US6234083B1 (en) * | 1998-07-21 | 2001-05-22 | Transdyne, Inc. | Resilient clip-on wear plate |
| CN2388083Y (en) * | 1999-09-29 | 2000-07-19 | 齐齐哈尔铁路车辆(集团)有限责任公司 | Railway wagon bogie |
| US6178894B1 (en) | 2000-01-07 | 2001-01-30 | Charles J. Leingang | Lateral control mount |
| US6422155B1 (en) * | 2000-10-03 | 2002-07-23 | Standard Car Truck Company | Rail car truck pedestal shear pad |
-
2001
- 2001-11-28 US US09/995,541 patent/US6591759B2/en not_active Expired - Lifetime
-
2002
- 2002-11-27 MX MXPA02011730A patent/MXPA02011730A/en active IP Right Grant
- 2002-11-28 BR BRPI0204884A patent/BRPI0204884B8/en not_active IP Right Cessation
- 2002-11-28 CN CNB021524459A patent/CN100377947C/en not_active Expired - Lifetime
- 2002-11-28 CA CA2413145A patent/CA2413145C/en not_active Expired - Lifetime
- 2002-11-28 BR BRPI0204884-1A patent/BR0204884B1/en active IP Right Grant
- 2002-11-28 AU AU2002308792A patent/AU2002308792B2/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| BRPI0204884B8 (en) | 2023-03-21 |
| CA2413145A1 (en) | 2003-05-28 |
| CN100377947C (en) | 2008-04-02 |
| CN1421345A (en) | 2003-06-04 |
| US20030097955A1 (en) | 2003-05-29 |
| BRPI0204884B1 (en) | 2011-05-17 |
| AU2002308792B9 (en) | 2003-06-12 |
| MXPA02011730A (en) | 2003-09-25 |
| BR0204884A (en) | 2004-06-15 |
| BRPI0204884A2 (en) | 2004-06-15 |
| US6591759B2 (en) | 2003-07-15 |
| AU2002308792B2 (en) | 2007-07-12 |
| BR0204884B1 (en) | 2011-05-17 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20221128 |