CA1187030A - Conveyor roller - Google Patents
Conveyor rollerInfo
- Publication number
- CA1187030A CA1187030A CA000405801A CA405801A CA1187030A CA 1187030 A CA1187030 A CA 1187030A CA 000405801 A CA000405801 A CA 000405801A CA 405801 A CA405801 A CA 405801A CA 1187030 A CA1187030 A CA 1187030A
- Authority
- CA
- Canada
- Prior art keywords
- casing
- roller
- conveyor roller
- shaft
- bearing
- 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
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
- B65G—TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
- B65G39/00—Rollers, e.g. drive rollers, or arrangements thereof incorporated in roller-ways or other types of mechanical conveyors
- B65G39/02—Adaptations of individual rollers and supports therefor
- B65G39/09—Arrangements of bearing or sealing means
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
- Rolls And Other Rotary Bodies (AREA)
Abstract
ABSTRACT OF THE DISCLOSURE
A conveyor roller for a belt conveyor includes a cylindrical metal casing, a shaft in the casing, roller bearing on each end of the shaft for rotatably supporting the casing, a bearing casing containing the roller bearings and a seal, a plastic sleeve between the outer metal casing and the bearing casing, and balancing weights in the plastic sleeve for balancing the roller.
A conveyor roller for a belt conveyor includes a cylindrical metal casing, a shaft in the casing, roller bearing on each end of the shaft for rotatably supporting the casing, a bearing casing containing the roller bearings and a seal, a plastic sleeve between the outer metal casing and the bearing casing, and balancing weights in the plastic sleeve for balancing the roller.
Description
This invention relates to a conveyor roller, and in particular to a roller for a belt conveyor.
The conveyor roller Eield is relatively crowded. Such rollers include a cylindrical steel casing or shell, a cent~al shaft, end caps on the casing, and hubs or bearings for rotatably supporting the casing on the shaft. The bearings and end caps are often part of the same element. Examples of patent art relating to rollers of the above described type include ~OS. Patents Nos.
The conveyor roller Eield is relatively crowded. Such rollers include a cylindrical steel casing or shell, a cent~al shaft, end caps on the casing, and hubs or bearings for rotatably supporting the casing on the shaft. The bearings and end caps are often part of the same element. Examples of patent art relating to rollers of the above described type include ~OS. Patents Nos.
2,886,156, issued to S. Halbron on May 12, 1959; 3,194,387, issued to W.N. Poundstone on July 13, 1965; 3,353,644, issued to H.~.
McNash et al on November 21, 1967; 3,931,87~, issued to ~. Payne on January 13, 1976; 3,957,147, issued to D. Specht on May 18, 1976; 3,994,380, issued to H.F. Hope et al on November 30, 1976;
4,059,180, issued to B. Krivec et al on November 22, 1977 and 4,~13,523, issued to C.C. Frost et al on July 22, 1980.
In general, the problems involved with such rollers~ are (1) the use of a large number of elements which increase~weight and the unit price of the rollers, and (2) unstable structures resulting in excessive wear and short roller life.
The object of the present invention is to provide a rela-tively simple, yet durable conveyor roller, which may include balancing means for eliminating high frequency vibra-tions at high speecls.
Accordingly, the present invention relates to a conveyor roller including a cylindrical casing, shaft means in said casing e~tending beyond the ends of said casing; bearing means on each end of said shaft means for rotatably supporting said casing on said shaft means; plastic sleeve means on said bearing means be-tween said bearing means and said casing means; and balancing means in said sleeve means permitting changing of the balance of the roller.
76~3~3 The invention will now be described in greater detail with reference to the accompan~ing drawings, which illustrate preferred embodiments of the invention, and wherein:
Figure 1 is a partly longitudinally sectioned, side elevat-ional view of one embodiment of conveyor roller in accordance with the present invention;
Figure 2 is a plan view of an inner end cap used in the conveyor roller of Fig. l;
Figure 3 is a cross-sectional view of one sealing ring or a two-part seal used in the roller of Figs. 1 and 2;
Figure 4 is a cross sectional view of another sealing ring of the two-part seal;
Figure 5 is an end view of the roller of Fig. l;
Figure 6 is a cross-sectional view of the outer end cap of Fig. 5;
Figure 7 is a longitudinal sectional view of one end of a second embodiment of conveyor roller in accordance with the present invention;
Figure 8 is a cross-section taken generally along line VIII-VIII of Fig. 7, ~ith parts removed, Figure 9 i5 a longitudinal sec-tional view of one end of a third embodiment of conveyor roller in accordance with the present invention;
Figure 10 is a plan view of a fourth embodiment of an end structure in accordance with the present invention; and Figure 11 is a partly sectioned, side elevational view of the end structure of Fig. 10.
With reference to Figs. 1 to 6, a conveyor roller in accordance with the present invention includes a cylindrical steel casing 1. The casing 1 is rotatably mounted on an elon~ated shaft
McNash et al on November 21, 1967; 3,931,87~, issued to ~. Payne on January 13, 1976; 3,957,147, issued to D. Specht on May 18, 1976; 3,994,380, issued to H.F. Hope et al on November 30, 1976;
4,059,180, issued to B. Krivec et al on November 22, 1977 and 4,~13,523, issued to C.C. Frost et al on July 22, 1980.
In general, the problems involved with such rollers~ are (1) the use of a large number of elements which increase~weight and the unit price of the rollers, and (2) unstable structures resulting in excessive wear and short roller life.
The object of the present invention is to provide a rela-tively simple, yet durable conveyor roller, which may include balancing means for eliminating high frequency vibra-tions at high speecls.
Accordingly, the present invention relates to a conveyor roller including a cylindrical casing, shaft means in said casing e~tending beyond the ends of said casing; bearing means on each end of said shaft means for rotatably supporting said casing on said shaft means; plastic sleeve means on said bearing means be-tween said bearing means and said casing means; and balancing means in said sleeve means permitting changing of the balance of the roller.
76~3~3 The invention will now be described in greater detail with reference to the accompan~ing drawings, which illustrate preferred embodiments of the invention, and wherein:
Figure 1 is a partly longitudinally sectioned, side elevat-ional view of one embodiment of conveyor roller in accordance with the present invention;
Figure 2 is a plan view of an inner end cap used in the conveyor roller of Fig. l;
Figure 3 is a cross-sectional view of one sealing ring or a two-part seal used in the roller of Figs. 1 and 2;
Figure 4 is a cross sectional view of another sealing ring of the two-part seal;
Figure 5 is an end view of the roller of Fig. l;
Figure 6 is a cross-sectional view of the outer end cap of Fig. 5;
Figure 7 is a longitudinal sectional view of one end of a second embodiment of conveyor roller in accordance with the present invention;
Figure 8 is a cross-section taken generally along line VIII-VIII of Fig. 7, ~ith parts removed, Figure 9 i5 a longitudinal sec-tional view of one end of a third embodiment of conveyor roller in accordance with the present invention;
Figure 10 is a plan view of a fourth embodiment of an end structure in accordance with the present invention; and Figure 11 is a partly sectioned, side elevational view of the end structure of Fig. 10.
With reference to Figs. 1 to 6, a conveyor roller in accordance with the present invention includes a cylindrical steel casing 1. The casing 1 is rotatably mounted on an elon~ated shaft
3~
2 which extends between the ends o~ the casin~ 1 for mounting the roller in a conveyor assembly (not shown). Roller bearings 3 (one shown) are mounted on each end ~ of the shaft 2 inside the casing 1.
Each of the bearings 3 is held in position on the shaft ~ by means of a circular inner end cap 5. The cap 5 has an annullar lug 6 ~b;~la~
which abuts the bearing 3 and stainless steel t~e bearing casing 7. A radially extending inner flange 8 on the casing 7 limits inward movement of the bearing 3.
~ two-part seal is also provided on the shaft 2 in the bearing casing 7. The seal includes a first annular sealing ring 9 mounted on the shaft 2. The ring 9 (Fig. 3) includes a central sleeve 10, which is mounted on the shaft 2, a radially extending flange 11 and a pair of axially extending, tubular arms 12. The arms 12 extending between corresponding arms 13 and an outer sleeve 14 of a second sealing ring 15 (Fig. 4). The sleeve 1~ is mounted in the bearing casing 7, and is retained in position by a shoulder 1.6 on the interior surface of such casing 7~ A washer or ring 17 mounted in an annular groove (not shown) in the shaft 2 separates -the inner centre of the sealing ring 9 from the bearing 3. The seal is held against the washer 17 by a steel retaining ring 18, which has a yenerally S-shaped cross-sectional configuration, and by an outer end cap 19.
A molded polyurethane sleeve 20 extends radially between the interior surface of the casing 1 and the exterior surface of the bearing casing 7, and axially between the end caps 5 and 19.
The sleeve 20 is molded and press fit between the casings 1 and 7.
During molding of the sleeve 19, four pockets or cavities 21 (two shown) are formed at 90 to each other in the sleeve for receiving balancing weights. The balancing weights include lead plugs 22 which are connected to the end cap 19, or ballast defined ~37~3~
by lead shot 23. The le~d shot 23 is placed in at ]east one of the cavities 21 through a hole 2~ (Fig. 5 and 6) in the cap 19 during final halancingt and then a pluy 25 is inser-ted to hold the shot in p]ace. The cap 19 is retained on the end of -the casing 1 by annular lugs 26 and 27, and by adhesion between the steel and the polyurethane of the cap.
The second embodiment of the invention (Figs. 7 and 8) is a heavy duty idler roller which includes a cylindrical steel casing 30 similar to the casing 1 and a shaft 31 mounted in the casing 30.
A thin spacer ring 32 is spot welded to the interior surface 33 of the casing 30 for limiting inward movement of the end cap and bearing elements described hereinafter.
Ball bearings 34 are moun~ed on each end of the shaft 31.
The bearing 34 is maintained in position by a retaining ring 35 ~nd a cylindrical bearing casing 36. Annular shoulders 37 and 38 on the interior surface of the casing 36 limit inward movement o the ring 35 and bearing 34 in an axial direction. A two-part seal 39 (similar to the seal of Figs. 3 and 4) is provided in the casing 36 outside of the bearing 3~. The inner edges of the bearing 34 and seal 39 are separated by a retaining ring 40, which is held in a groove (not shown) on the shaft 31. The seal 39 is retained in the casing 36 by an outer retaining ring 41. The ring 41 is press fitted on the shaft 31 and seals and protects the seal 39.
The space between the casings 30 and 36 is occupied by a plastic sleeve ~2 such as Adiprene (trademark). During formation of the roller, the plastic sleeve ~2 fills the gap between the casings 30 and 36 (Fig. 8 illustrat~s the elements of the roller end only). The sleeve 42 is preformed, and is held in position by friction.
Referring now to Fig. 9 of the drawing, a third embodiment _ ~ _ 7~
o~ the invention i~cludes an outer steel casing 46 and a shaf~
47 extending between and beyond the ends thereof. A bearing assembly 48 is mounted on the shaft 47, so that the casing 46 can rotate relative to the shaft ~7. The bearing assembly 48 is held in position on the shaft 47 by a plastic sleeve 50 and an end cap 51. The sleeve 50 extends outwardly beyond the outer end 52 of the casing 46, including an annular flange 53, which has the same diameter as the casing 46. The outer end of the bearing assembly 48 is closed by the end cap 51.
1~ A fourth, light duty embodiment of the invention is shown in Figs. 10 and 11. The light duty version of the end cap is formed of plastic, and includes an inner sleeve 55, an outer sleeve 56 and a plurality of arms 57 extending radially ketween the sleeves 55 and 56. qlhe inner sleeve 55 has a stepped inner surface 58 and and inwardly extending, outer annular flange 59 for retaining a bearing assembly (not shown)~ A web 60 extends between the inner and outer sleeves 55 and 56, and adjacent arms 57 near the outer end of the cap, the sleeves 55 and 56, arms 57 and webs 60 defining recess 61. One arm 62 is wider than the other arms 57 so that a balancing weight-receiving hole ~not shown) can be provided in such arm. An annular, outwardly extending flange 63 is provided on the sleeve 56 for abutting the outer end of a roller casing (not shown).
It will be appreciated that a variety of moldable plastics and rubbers can be used to fill the space between the outer and bearing casings.
An advantage of at least two of the rollers described hereinbefore is that expensive production equipment is not required.
The plastic is merely poured into a mold, in which the ou-ter casing and the bearing casing are p^ecisely located. No external 3~
. .
_~ress is transferred to the bearin~s when polyurethane :is used.
The polyurethane is flexible, and prevents misalignmentu If ex-cessive roller end wear occurs, the polyurethane is exposed.
However, damage to the conveyor belt .is avoided.
2 which extends between the ends o~ the casin~ 1 for mounting the roller in a conveyor assembly (not shown). Roller bearings 3 (one shown) are mounted on each end ~ of the shaft 2 inside the casing 1.
Each of the bearings 3 is held in position on the shaft ~ by means of a circular inner end cap 5. The cap 5 has an annullar lug 6 ~b;~la~
which abuts the bearing 3 and stainless steel t~e bearing casing 7. A radially extending inner flange 8 on the casing 7 limits inward movement of the bearing 3.
~ two-part seal is also provided on the shaft 2 in the bearing casing 7. The seal includes a first annular sealing ring 9 mounted on the shaft 2. The ring 9 (Fig. 3) includes a central sleeve 10, which is mounted on the shaft 2, a radially extending flange 11 and a pair of axially extending, tubular arms 12. The arms 12 extending between corresponding arms 13 and an outer sleeve 14 of a second sealing ring 15 (Fig. 4). The sleeve 1~ is mounted in the bearing casing 7, and is retained in position by a shoulder 1.6 on the interior surface of such casing 7~ A washer or ring 17 mounted in an annular groove (not shown) in the shaft 2 separates -the inner centre of the sealing ring 9 from the bearing 3. The seal is held against the washer 17 by a steel retaining ring 18, which has a yenerally S-shaped cross-sectional configuration, and by an outer end cap 19.
A molded polyurethane sleeve 20 extends radially between the interior surface of the casing 1 and the exterior surface of the bearing casing 7, and axially between the end caps 5 and 19.
The sleeve 20 is molded and press fit between the casings 1 and 7.
During molding of the sleeve 19, four pockets or cavities 21 (two shown) are formed at 90 to each other in the sleeve for receiving balancing weights. The balancing weights include lead plugs 22 which are connected to the end cap 19, or ballast defined ~37~3~
by lead shot 23. The le~d shot 23 is placed in at ]east one of the cavities 21 through a hole 2~ (Fig. 5 and 6) in the cap 19 during final halancingt and then a pluy 25 is inser-ted to hold the shot in p]ace. The cap 19 is retained on the end of -the casing 1 by annular lugs 26 and 27, and by adhesion between the steel and the polyurethane of the cap.
The second embodiment of the invention (Figs. 7 and 8) is a heavy duty idler roller which includes a cylindrical steel casing 30 similar to the casing 1 and a shaft 31 mounted in the casing 30.
A thin spacer ring 32 is spot welded to the interior surface 33 of the casing 30 for limiting inward movement of the end cap and bearing elements described hereinafter.
Ball bearings 34 are moun~ed on each end of the shaft 31.
The bearing 34 is maintained in position by a retaining ring 35 ~nd a cylindrical bearing casing 36. Annular shoulders 37 and 38 on the interior surface of the casing 36 limit inward movement o the ring 35 and bearing 34 in an axial direction. A two-part seal 39 (similar to the seal of Figs. 3 and 4) is provided in the casing 36 outside of the bearing 3~. The inner edges of the bearing 34 and seal 39 are separated by a retaining ring 40, which is held in a groove (not shown) on the shaft 31. The seal 39 is retained in the casing 36 by an outer retaining ring 41. The ring 41 is press fitted on the shaft 31 and seals and protects the seal 39.
The space between the casings 30 and 36 is occupied by a plastic sleeve ~2 such as Adiprene (trademark). During formation of the roller, the plastic sleeve ~2 fills the gap between the casings 30 and 36 (Fig. 8 illustrat~s the elements of the roller end only). The sleeve 42 is preformed, and is held in position by friction.
Referring now to Fig. 9 of the drawing, a third embodiment _ ~ _ 7~
o~ the invention i~cludes an outer steel casing 46 and a shaf~
47 extending between and beyond the ends thereof. A bearing assembly 48 is mounted on the shaft 47, so that the casing 46 can rotate relative to the shaft ~7. The bearing assembly 48 is held in position on the shaft 47 by a plastic sleeve 50 and an end cap 51. The sleeve 50 extends outwardly beyond the outer end 52 of the casing 46, including an annular flange 53, which has the same diameter as the casing 46. The outer end of the bearing assembly 48 is closed by the end cap 51.
1~ A fourth, light duty embodiment of the invention is shown in Figs. 10 and 11. The light duty version of the end cap is formed of plastic, and includes an inner sleeve 55, an outer sleeve 56 and a plurality of arms 57 extending radially ketween the sleeves 55 and 56. qlhe inner sleeve 55 has a stepped inner surface 58 and and inwardly extending, outer annular flange 59 for retaining a bearing assembly (not shown)~ A web 60 extends between the inner and outer sleeves 55 and 56, and adjacent arms 57 near the outer end of the cap, the sleeves 55 and 56, arms 57 and webs 60 defining recess 61. One arm 62 is wider than the other arms 57 so that a balancing weight-receiving hole ~not shown) can be provided in such arm. An annular, outwardly extending flange 63 is provided on the sleeve 56 for abutting the outer end of a roller casing (not shown).
It will be appreciated that a variety of moldable plastics and rubbers can be used to fill the space between the outer and bearing casings.
An advantage of at least two of the rollers described hereinbefore is that expensive production equipment is not required.
The plastic is merely poured into a mold, in which the ou-ter casing and the bearing casing are p^ecisely located. No external 3~
. .
_~ress is transferred to the bearin~s when polyurethane :is used.
The polyurethane is flexible, and prevents misalignmentu If ex-cessive roller end wear occurs, the polyurethane is exposed.
However, damage to the conveyor belt .is avoided.
Claims (6)
PROPERTY OR PRIVILEGE IS CLAIMED ARE DEFINED IS FOLLOWS:
1. A conveyer roller comprising a cylindrical casing, shaft means in said casing extending beyond the ends of said casing, means for supporting said casing on said shaft means, said supporting means comprising a molded plastic end member inserted into the end of said casing, said end member comprising inner and outer hub portions of substantially equal axial dimension, said inner hub portion including a recess for mounting a shaft engaging bearing therein, a radially extending web portion extending between said inner and outer hub portions and being of a lesser axial dimension than said hub portions and a plurality of radially extending reinforcing ribs integrally formed with said inner and outer hub portions and said web portion and having an axial dimen-sion substantially equal to the axial dimension of said hub portions for strengthening said end member and a disc-like seal member inserted into said inner hub portion and engag-ing said shaft for sealing the interior of said conveyor roller.
2. A conveyor roller as in Claim 1 wherein at least one of said reinforcing ribs is of a greater thickness than the remainder of said reinforcing ribs.
3. A conveyor roller as in Claim 1 wherein said end member includes a radially extending flange portion for abutting the end of said cylindrical casing.
4. A conveyor roller as in Claim 2 whereln at least one of said reinforcing ribs has a cavity formed therein and roller balancing means in said cavity.
5. A conveyor roller as in Claim 1 wherein said end member is frictionally retained in said cylindrical casing.
6. A conveyor roller as in Claim 1 wherein said inner hub portion includes a stepped inner surface and a radially inwardly directed flange portion for retaining said bearing therein.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000405801A CA1187030A (en) | 1982-06-23 | 1982-06-23 | Conveyor roller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000405801A CA1187030A (en) | 1982-06-23 | 1982-06-23 | Conveyor roller |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1187030A true CA1187030A (en) | 1985-05-14 |
Family
ID=4123079
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000405801A Expired CA1187030A (en) | 1982-06-23 | 1982-06-23 | Conveyor roller |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1187030A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2643307A1 (en) * | 1989-02-20 | 1990-08-24 | Rimbert Yves | Manufacture of handling rollers made of resin |
| US4955462A (en) * | 1989-09-05 | 1990-09-11 | Produits Carmine Inc. | Polymer concrete conveyor roller |
| DE4309813A1 (en) * | 1992-04-01 | 1993-10-07 | Bouchal Milan | Carrier roller for a conveyor |
| US5433308A (en) * | 1994-06-28 | 1995-07-18 | J.P.G. Composite Plus Inc. | Roller assembly and method for manufacturing the same |
| US5642800A (en) * | 1996-03-05 | 1997-07-01 | Fmc Corporation | Belt conveyor idler roll seal |
| WO1998041459A2 (en) * | 1997-03-18 | 1998-09-24 | Schiering William C | Reusable axle assembly and replaceable roller sleeve for a conveyor roller |
| US6234293B1 (en) * | 1999-07-23 | 2001-05-22 | Luff Industries Ltd. | Conveyor-belt roller assembly |
| WO2005019683A1 (en) * | 2003-07-24 | 2005-03-03 | Ina-Schaeffler Kg | Strip tightening roller |
| WO2011127588A1 (en) * | 2010-04-15 | 2011-10-20 | Groupe Rodillo Inc. | Conveyor roller |
| WO2017034386A3 (en) * | 2015-08-25 | 2017-04-06 | Hartalega Sdn Bhd | An improved former holder assembly |
| WO2020127483A1 (en) * | 2018-12-18 | 2020-06-25 | Interroll Holding Ag | Conveyor roller and production method |
-
1982
- 1982-06-23 CA CA000405801A patent/CA1187030A/en not_active Expired
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2643307A1 (en) * | 1989-02-20 | 1990-08-24 | Rimbert Yves | Manufacture of handling rollers made of resin |
| US4955462A (en) * | 1989-09-05 | 1990-09-11 | Produits Carmine Inc. | Polymer concrete conveyor roller |
| DE4309813A1 (en) * | 1992-04-01 | 1993-10-07 | Bouchal Milan | Carrier roller for a conveyor |
| US5261528A (en) * | 1992-04-01 | 1993-11-16 | Milan Bouchal | Roller for belt conveyor |
| US5433308A (en) * | 1994-06-28 | 1995-07-18 | J.P.G. Composite Plus Inc. | Roller assembly and method for manufacturing the same |
| WO1996000691A1 (en) * | 1994-06-28 | 1996-01-11 | Gagnon Jean Pierre | Roller assembly and method for manufacturing the same |
| AU682615B2 (en) * | 1994-06-28 | 1997-10-09 | Jean-Pierre Gagnon | Roller assembly and method for manufacturing the same |
| US5642800A (en) * | 1996-03-05 | 1997-07-01 | Fmc Corporation | Belt conveyor idler roll seal |
| WO1998041459A2 (en) * | 1997-03-18 | 1998-09-24 | Schiering William C | Reusable axle assembly and replaceable roller sleeve for a conveyor roller |
| WO1998041459A3 (en) * | 1997-03-18 | 1999-08-05 | William C Schiering | Reusable axle assembly and replaceable roller sleeve for a conveyor roller |
| US6098776A (en) * | 1997-03-18 | 2000-08-08 | Schiering; William C. | Reusable axle assembly and a replaceable roller sleeve for a conveyor roller |
| US6234293B1 (en) * | 1999-07-23 | 2001-05-22 | Luff Industries Ltd. | Conveyor-belt roller assembly |
| WO2005019683A1 (en) * | 2003-07-24 | 2005-03-03 | Ina-Schaeffler Kg | Strip tightening roller |
| WO2011127588A1 (en) * | 2010-04-15 | 2011-10-20 | Groupe Rodillo Inc. | Conveyor roller |
| WO2017034386A3 (en) * | 2015-08-25 | 2017-04-06 | Hartalega Sdn Bhd | An improved former holder assembly |
| WO2020127483A1 (en) * | 2018-12-18 | 2020-06-25 | Interroll Holding Ag | Conveyor roller and production method |
| CN113196627A (en) * | 2018-12-18 | 2021-07-30 | 英特诺控股公司 | Conveying roller and method of manufacture |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEC | Expiry (correction) | ||
| MKEX | Expiry |