WO2001096761A1 - Spiral for interconnecting ends of endless belt segments - Google Patents
Spiral for interconnecting ends of endless belt segments Download PDFInfo
- Publication number
- WO2001096761A1 WO2001096761A1 PCT/CA2001/000617 CA0100617W WO0196761A1 WO 2001096761 A1 WO2001096761 A1 WO 2001096761A1 CA 0100617 W CA0100617 W CA 0100617W WO 0196761 A1 WO0196761 A1 WO 0196761A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- spiral
- loops
- loop portion
- legs
- pintle
- Prior art date
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16G—BELTS, CABLES, OR ROPES, PREDOMINANTLY USED FOR DRIVING PURPOSES; CHAINS; FITTINGS PREDOMINANTLY USED THEREFOR
- F16G3/00—Belt fastenings, e.g. for conveyor belts
- F16G3/02—Belt fastenings, e.g. for conveyor belts with series of eyes or the like, interposed and linked by a pin to form a hinge
-
- D—TEXTILES; PAPER
- D21—PAPER-MAKING; PRODUCTION OF CELLULOSE
- D21F—PAPER-MAKING MACHINES; METHODS OF PRODUCING PAPER THEREON
- D21F1/00—Wet end of machines for making continuous webs of paper
- D21F1/0027—Screen-cloths
- D21F1/0054—Seams thereof
Definitions
- the present invention relates to a spiral for interconnecting ends of endless belt segments.
- Segments of an endless belt have ends provided with sets of loops interdigitatable with one another so that the segments can be connected together by insertion of a pintle into the channel formed by the interdigitated sets of loops of two adjacent belt segments.
- the sets of loops and the pintle are however subjected to high stresses and strains during operation of the endless belt, so their design and strength are of utmost importance as a loose segment or pintle may cause important damages to the machine or serious injuries to a passer-by.
- the sets of loops are frequently provided by spirals seamed at the ends of the belt segments.
- US patent no. 5,915,422 (Fagerholm) shows an example of such a spiral attached at the end of a woven (felt) belt. When viewed sideways, the spiral exhibits a series of V-shaped loops spaced from one another by straight sections especially intended to receive flat filament yarns for attachment of the spiral to the end of the belt section.
- the interdigitation of two such spirals at the ends of adjacent belt sections is however uneven and unsteady due to the mismatching of the loops between the two interdigitated sets and the large spaces left between the loops for the yarns.
- the interdigitation is frequently incomplete or partial as a result of the non-complementary shapes of the spirals, so the resulting channel has a reduced size compared to the size of the loops and thus only a small size pintle can disadvantageously be used instead of a larger size one.
- An object of the invention is to provide a spiral for interconnecting ends of endless belt segments using a pintle, which better interdigitates with like spirals than the spirals of the prior art and which allows the use of larger size pintle for interlocking the spirals together.
- Another object of the invention is to provide such a spiral having loops that fully insert down to the bottom of a like spiral.
- Another object of the invention is to provide such a spiral which can be easily manufactured in a large range of sizes to fit multiple needs and applications.
- a spiral for interconnecting ends of endless belt segments using a pintle comprising a series of loops including inverted U-shaped loop portions extending in a transverse direction of the spiral.
- the loop portions have front and rear legs spaced apart from each other for passage of the pintle therebetween.
- U-shaped loop linking portions extend diagonally with respect to a longitudinal direction of the spiral, between lower ends of the front legs and lower ends of the rear legs of the next loop portions respectively.
- the loop portions are spaced from one another by a distance corresponding to a width of the legs of the loop portions in the longitudinal direction of the spiral, thereby defining openings for interdigitation with a like spiral to form a channel for the pintle.
- Each loop portion may have an uppermost head extending between the legs and projecting on opposite sides of the loop portion in the longitudinal direction of the spiral, for interlocking with like heads on the like spiral.
- the spiral according to the invention almost fully blends with a like spiral, which leaves more inner space for a larger pintle or for receiving a filling material.
- Figure 1 is a side elevation view illustrating a spiral according to the invention
- Figure 2 is a side elevation view illustrating a spiral with interlocking heads according t ' o the invention
- Figure 3 is a perspective view illustrating a spiral according to the invention.
- Figure 4 is a perspective view illustrating two spirals with interlocking heads during interdigitation in order to interconnect ends of endless belt segments.
- FIG. 1 and 3 there is shown a spiral according to the invention, for interconnecting ends of endless belt segments using a pintle (not shown in the Figures) .
- the spiral comprises a series of loops 2 each including an inverted U-shaped loop portion 4 extending in a transverse direction of the spiral, as depicted by arrow 6 in Figure 3.
- the loop portion 4 has front and rear legs 8, 10 spaced apart from each other for passage of the pintle therebetween, as best shown in Figure 3.
- Each loop 2 also includes a U-shaped loop linking portion 12 extending diagonally with respect to a longitudinal direction 7 of the spiral, between a lower end of the front leg 8 of the loop portion 4 and a lower end of a rear leg 10 of a loop portion 4 of a next one of the loops 2.
- the loop portions 4 are spaced from one another by a distance 14 substantially corresponding to a width 16 of the legs 8, 10 of the loop portions 4 in the longitudinal direction 7 of the spiral, thereby defining openings 17 for interdigitation with a like spiral to form a channel 19 for the pintle, as best shown in Figure 4.
- the series of loops 2 can be made of a single wire of polyester (trademark), nylon (trademark), PEEK (PolyEther Ether Ketone) , PVDS (Fluoropolymer) , Ryton (trademark) , or any other suitable material.
- polyester trademark
- nylon trademark
- PEEK PolyEther Ether Ketone
- PVDS Fluoropolymer
- Ryton trademark
- the wire may have a flat cross-section, providing more inner space for the channel 19.
- the spirals according to the invention can be seamed or otherwise attached to the ends of the belt segments to be interconnected with yarns woven in the belt segments and curling back around the linking portions 12.
- each loop portion 4 may be provided with an uppermost head 18 extending between the legs 8, 10 and projecting on opposite sides of the loop portion 4 in the longitudinal direction 7 of the spiral, for interlocking with like heads on the like spiral as exemplified in Figure 4.
- the heads 18 can be made by a flattening of the wire between the legs 8, 10 of each loop portion 4, provided that the wire has a cross-section suitable for the flattening operation, e.g. a round cross- section.
- a cross-section suitable for the flattening operation e.g. a round cross- section.
- Such a feature is particularly useful to hold back the spirals together the time to install the pintle inside the channel 19.
- a loss in the strength of the resulting interconnection is likely to happen due to the flattening of the wire to form the heads 18 when made in this way.
- each loop portion 4 may be longer than a width 20 of the loop portion 4 in the transverse direction 6 of the spiral, so that the channel 19 has an obround cross-section adapted to receive a flat pintle.
- the gauge of the wire used to make the spiral can be chosen according to the needs (desired strength, available space for the spiral, etc.).
- the design of the spirals according to the invention allows to two interdigitated spirals to reach the bottom of the other. With the larger channel obtained with the spirals according to the invention, a larger (stronger) pintle can be used, or a remaining gap in the channel after pintle insertion can be filled with a suitable material.
Landscapes
- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Details Of Garments (AREA)
- Woven Fabrics (AREA)
- Structure Of Belt Conveyors (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP01931248A EP1295049A1 (en) | 2000-06-16 | 2001-05-02 | Spiral for interconnecting ends of endless belt segments |
AU2001258083A AU2001258083A1 (en) | 2000-06-16 | 2001-05-02 | Spiral for interconnecting ends of endless belt segments |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CA002311845A CA2311845C (en) | 2000-06-16 | 2000-06-16 | Spiral for interconnecting ends of endless belt segments |
CA2,311,845 | 2000-06-16 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2001096761A1 true WO2001096761A1 (en) | 2001-12-20 |
Family
ID=4166507
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/CA2001/000617 WO2001096761A1 (en) | 2000-06-16 | 2001-05-02 | Spiral for interconnecting ends of endless belt segments |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP1295049A1 (en) |
AU (1) | AU2001258083A1 (en) |
CA (1) | CA2311845C (en) |
WO (1) | WO2001096761A1 (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003054416A1 (en) * | 2001-12-10 | 2003-07-03 | Lippert Pintlepin Mfg. Inc. | Spiral for interconnecting ends of endless belt segments |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2059021A1 (en) * | 1970-12-01 | 1972-06-08 | Opti Holding Ag | Device for connecting conveyor belts or the like. |
US4539730A (en) * | 1983-08-22 | 1985-09-10 | Albany International Corp. | Seaming means and a tool for forming the seam |
EP0275656A1 (en) * | 1986-12-13 | 1988-07-27 | Scapa-Porritt Limited | Jointing of fabric ends |
US4791708A (en) * | 1984-02-23 | 1988-12-20 | Asten Group, Inc. | Abrasion and hydrolysis resistant joining means for fabric seams |
EP0674041A2 (en) * | 1994-03-16 | 1995-09-27 | Asten, Inc. | Coil seam for single layer industrial fabrics having an uneven shed pattern |
US5915422A (en) | 1995-03-23 | 1999-06-29 | Albany Nordiskafilt Ab | Machine clothing having a seam, and spiral for use in such a seam |
EP0967306A1 (en) * | 1998-06-26 | 1999-12-29 | Johns Manville International, Inc. | Monofilament based on polyethylene-2.6-naphthalate |
-
2000
- 2000-06-16 CA CA002311845A patent/CA2311845C/en not_active Expired - Lifetime
-
2001
- 2001-05-02 WO PCT/CA2001/000617 patent/WO2001096761A1/en not_active Application Discontinuation
- 2001-05-02 EP EP01931248A patent/EP1295049A1/en not_active Withdrawn
- 2001-05-02 AU AU2001258083A patent/AU2001258083A1/en not_active Abandoned
Patent Citations (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE2059021A1 (en) * | 1970-12-01 | 1972-06-08 | Opti Holding Ag | Device for connecting conveyor belts or the like. |
US4539730A (en) * | 1983-08-22 | 1985-09-10 | Albany International Corp. | Seaming means and a tool for forming the seam |
US4791708A (en) * | 1984-02-23 | 1988-12-20 | Asten Group, Inc. | Abrasion and hydrolysis resistant joining means for fabric seams |
US4791708B1 (en) * | 1984-02-23 | 1995-02-07 | Asten Group | Abrasion and hydrolysis resistant joining means for fabric seams |
US4791708B2 (en) * | 1984-02-23 | 1995-11-28 | Asten Group | Abrasion and hydrolysis resistant joining means for fabric seams |
EP0275656A1 (en) * | 1986-12-13 | 1988-07-27 | Scapa-Porritt Limited | Jointing of fabric ends |
EP0674041A2 (en) * | 1994-03-16 | 1995-09-27 | Asten, Inc. | Coil seam for single layer industrial fabrics having an uneven shed pattern |
US5915422A (en) | 1995-03-23 | 1999-06-29 | Albany Nordiskafilt Ab | Machine clothing having a seam, and spiral for use in such a seam |
EP0967306A1 (en) * | 1998-06-26 | 1999-12-29 | Johns Manville International, Inc. | Monofilament based on polyethylene-2.6-naphthalate |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2003054416A1 (en) * | 2001-12-10 | 2003-07-03 | Lippert Pintlepin Mfg. Inc. | Spiral for interconnecting ends of endless belt segments |
Also Published As
Publication number | Publication date |
---|---|
CA2311845A1 (en) | 2001-12-16 |
EP1295049A1 (en) | 2003-03-26 |
AU2001258083A1 (en) | 2001-12-24 |
CA2311845C (en) | 2008-10-07 |
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