CA1218620A - Polymeric flights for conveyor chain - Google Patents
Polymeric flights for conveyor chainInfo
- Publication number
- CA1218620A CA1218620A CA000491590A CA491590A CA1218620A CA 1218620 A CA1218620 A CA 1218620A CA 000491590 A CA000491590 A CA 000491590A CA 491590 A CA491590 A CA 491590A CA 1218620 A CA1218620 A CA 1218620A
- Authority
- CA
- Canada
- Prior art keywords
- side member
- arm
- chain
- extending
- sidebar
- 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
Landscapes
- Chain Conveyers (AREA)
Abstract
ABSTRACT
A polymeric flight element for attachment to a conveyor chain is disclosed as having a pair of side members positioned adjacent to two parallel sidebars of a chain link, two pins integral with the side members and extending through the chain link to attach the flight element to the link, a conveyor arm integral with and extending from each side member in a direction away from the chain link, and buttons integral with and projecting from each side member into openings in the sidebars at a distance from the conveyor arms and pins. The buttons carry a portion of the conveying force applied by the chain to the conveyor arms and resisting forces on the arms due to excessive obstructions.
A polymeric flight element for attachment to a conveyor chain is disclosed as having a pair of side members positioned adjacent to two parallel sidebars of a chain link, two pins integral with the side members and extending through the chain link to attach the flight element to the link, a conveyor arm integral with and extending from each side member in a direction away from the chain link, and buttons integral with and projecting from each side member into openings in the sidebars at a distance from the conveyor arms and pins. The buttons carry a portion of the conveying force applied by the chain to the conveyor arms and resisting forces on the arms due to excessive obstructions.
Description
3Eii2~
l This invention relates -to flights for conveyor chains and more particularly to polymeric flights attachable to chains for conveying loose material.
Conveyor chains employing a continuous chain moving in the direction of its length are used widely for the conveying of material. Flights extend from the sides of the chain in directions transverse to the direction of movement of the chain for applying the conveying force of the chain. The flights can be of various types and shapes for different conveying purposes. Examples include pusher flight attachments, blade flights for chain -that is used in digging, and flat top flights for carrying articles. A common type of flight used for conveying loose material has arms extending from each side of a central chain which is moving through a chute such that the flights push the material as they move along the floor of the chute.
Before the advent of polymeric materials usable in conveyor chain applications, ~he flights were usually of steel and were either welded or bolted to the chain links. For very heavy duty applications, steel flights welded or bolted to the chain links are still preferred. However, there are several problems relating to the use of steel flights. One of these is that they are expensive both due to high material cost and due to a larye amount of labor required to weld or bolt the steel flights to the chain links. Another problem of steel flights is that they are heavy and thereby make the chain difficult to handle and increase the amount of power xequired to drive the chain.
Polymeric links are relatively easy to fabricate, lighter in weight, easy to handle and require less energy to drive as part of a conveyor chain. Polymeric links may also be relatively easy to attach to the chain links, however, the mode of attachment must nevertheless be of sufficient strength to transfer the driving force of the chain to the flights.
Conveyor flights of both the steel and polymeric type are subject to undue stresses due to obstructions or binding of the material being conveyed which provides a force resisting the 1 driving force of the conveyor chain. The result is that the flight may be d~maged or may be detached from the chain link or the chain link may be damaged. Breakage of the flight is more of a problem with polymeric flights than with steel flights due to the lower strength characteristics of polymeric materials. Thus, there is a need for improved polymeric flight attachments which have a greater ability to transfer obstruction or binding resistive forces to the chain link wi-thout either breaking or detaching from the link.
It is a general object of this invention to provide a polymeric flight element for a conveyor chain which has a structure and is attached to the chain such that the load carrying force applied to the flight element by the chain and forces resisting the load carrying force are transferred between the flight element and the chain in a manner minimi~ing breakage of the flight element or its detachment from the chain.
The invention is accomplished by providing a polymeric flight element having a side member attached to a sidebar of a link of a conveyor chain, a conveyor arm extending laterally from the side member in-termediate the ends of the side member, and at least one button positioned on the side member at a distance from the conveyor arm and projecting from the side member through an opening in the sidebar and engaging the sides of the sidebar opening such that force due to the conveying movement of the chain and forces resisting the con~eying force are transferred through the buttons to the side member and conveyor arm. By spacin~ the button at a distance from the arm extending from the sidebar, the amount of stress on the side member is distributed along the length of the side membar at the locations of attachment of the arm to the side member and the location of the engagement of the button with the sidebar.
The side member may be attached to the chain link sidebar by a pin integral with the side member and extending through a hollow rivet connecting parallel chain sidebars. The button functions as a load carrying means receiving and transferring a por-tion of the force that would be otherwise applied to the pin to thus reduce the forces applied to the 1 pin. The conveyor arm of the flight element may have a weakened area extending across its width. At the weakened area, the arm bends when obstructed or bound by the material it is moving to thereby decrease the amount of resis~ing force in the path of the arm and assist in its being freed of the obstruction or binding xesistance.
A more thorough understanding oF the present invention will be gained by reading the following description of -the preferred embodiments with reference to the accompan~ing drawings in which:
Figure 1 is a top view o~ a conveyor chain includin~ a flight element in accordance wi-th the present inven-tion;
Figure 2 is a perspective view of one-half of the fli~ht element shown in Figure l;
Figure 3 is a broken-away top view, par-tially in section, of the conveyor chain and flight element shown in Figure 1 ;
Figure 4 is a side view of the chain and flight element; and Figure 5 is a top view of a portion of the flight element showing it in a bent condi-tion.
Referring to Figures 1 and 4, a flight element 2 according to the invention is shown mounted on a conveyor chain 4 which is typically made of steel. The chain 4 comprises a plurality of inner chain links 6 and a plurality of outer chain links 8. The inner chain links 6 each include parallel inner sidebars 10 and 12 respectively having opposite ends 14 and 16 and opposi-te ends 18 and 20. The outex chain links 8 each include parallel outer sidebars 22 and 24 respectively having opposite ends 26 and 28 and opposite ends 30 and 32. The ends 14 and 18 and the ends 16 and 20 of the sidebars 10 and 12 are connected together by bushings 34 which have an interference fit with the sidebars 10, 12. The connected ends 14, 18 and 16, 20 o~ the sidebars 10, 12 which comprise the inner chain links 6 are respectively joined by bushings in the form of hollow rivets 36 to ends 26, 30 and 28, 32 of the sidebars 22, 24 of outer links 21~D
1 8- The rivets 36 have an interference fit with the sidebars 22, 24 and a clearance fit with the bushings 34 so that the rivets 36 and -thereby the outer chain links 8 are ~ree to ro-tate relative to the inner sidebars lO, 12. In the illustrated embodimen-t, rollers 38 are mounted on the bushings 34.
The flight elements 2 each include two integral, molded polymeric material conveyor members 42 and 60 which may be identical to each other. The conveyor member 42 includes a slde member 46, a pin 48 and a conveyor arm 44 having a weakened area 56. The conveyor member 60 similarly includes a side member 62, a pin 64 and a conveyor arm 66 having a weakened area 68. Due to the identity of these elements of the conveyor members 60 and 42, onl~ components of conveyor member 42 will be described in detail. The side member 46 is positioned adjacent to and preferably against the sidebar 22 of outer chain link 8 and includes ends 50 and 52 respectively juxtaposed with the ends 26 and 28 of the sidebar 22. The conveyor arm 44 extends away from the chain 4 and transverse to the direction of movement of the chain at a position intermediate the ends 50 and 52 of the side member 46.
The conveyor member 60 has an end 88 from which the pin extends through hollow rivet 36 and the side member 46 of the conveyor member 42. The side member 46 includes a receptacle 70 having a varying inside diame-ter which corresponds to a varying outside diameter of the end of the pin 64 such -that the pin 64 is received with a snap fit in the receptacle 70. ~imilarly, the pin 48 extending from the end 52 of the side member 46 has a varying outside diameter which is received with a snap fit in a receptacle 58 having a varying outside diameter and located at the end of side member 62. In this manner the conveyor members 42 and 60 are connected together to form the flight element 2 and are attached to and move with the chain links 8 of the chain 4.
The side member 46 includes a pair of buttons 72 and 74 positioned along the length of the member 46 at a distance spaced from the arm 44 and projecting toward the sidebar 22. The side member 62 includes a pair of buttons 76 and 78 positioned along the length of the member 62 at a distance spaced from the arm 66 ~2~
1 and projectlng toward the sidebar 24. The sidebar 22 has a pair of openin~s 80 and 82 positioned along the length of -the sidebar 22 at positions opposite the but-tons 72 and 74 and the sidebar 24 has a pair of openings 84 and 86 similarly posi.tioned along the length of the sidebar 24 at positions opposite the buttons 76 and 78. The buttons 72, 74 and 76, 78 respectively project into and engage the sides of the openings ao, 82 and 84, 86.
In conveying loose material 54 as -the chain 4 moves in the direction of the arrow (see Figures 1 and 5) along a chute or trough, typicall~ by pushing the material 54 with the arms 4~ and 6~ of the flight elements 2, obstructions or binding of the material being conveyed may occur and cause excessive resistance force to the chain driving force on the arms 44 and 66. The effort of the chain to move the arms past the obstructions or to overcome the binding may cause the detachment of the side members from the chain links and/or the breaking of the pins or conveyor arms. However, the provision of the buttons 72, 74 and 76, 78 such that they project through the sidebars 22 and 24 and bear against the sides of the openings 80, 82 and 84, 86 in the direction of the forces applied to the pins results in the buttons carrying a portion of the load or forces applied to the flight elements 2 by the chain 4 or the obstructing forces.
Thus, the full application of such forces to pins 48 and 64 is prevented. Also important in minimi~ing breakage of the flight 25 elements is the spacing of the buttons 72, 74 and 76, 78 respectively from the positions of the arms 4~ and 66. Such spacing separates the high stress areas at the locations of the attachment of the arms to their side members, the engagement of the huttons with the chain links, and the attachment of the side members to the chain links through the pins. As a consequence, the flight elements 2, even though they are made from a polymeric material, can withstand a much greater resistance to the driving force of the conveyor chain 4 and the the obstructing forces so that problems due to breaking of the flight elements or their detachment from the chain links are considerably decreased.
A further improvement to the flight elements 2 in the way of avoiding breakage of the elements is the provision of the --6~
36~
1 weakened lines or areas 56 and 68 which cooperate with the buttons 72, 74 and 76, 78 to prevent failure of the fliyht elements 20 In the event that the arms 44 and 66 are unduly obstructed, they will bend at the weakened areas to assist in the release of the arms from -the obstruction. ~hus, through the cooperation of the buttons 72, 74 and 76, 78 and the weakened areas on the arms 44, 66, the ability of the flight elements 2 to avoid breakage is considerably enhanced.
It will be understood -that the foregoing description of the present invention is for purposes of illustration only and that the invention is susceptible to a number of modifications or changes, none of which entail any departure from the spirit and scope of the present invention as defined in the hereto appended claims.
l This invention relates -to flights for conveyor chains and more particularly to polymeric flights attachable to chains for conveying loose material.
Conveyor chains employing a continuous chain moving in the direction of its length are used widely for the conveying of material. Flights extend from the sides of the chain in directions transverse to the direction of movement of the chain for applying the conveying force of the chain. The flights can be of various types and shapes for different conveying purposes. Examples include pusher flight attachments, blade flights for chain -that is used in digging, and flat top flights for carrying articles. A common type of flight used for conveying loose material has arms extending from each side of a central chain which is moving through a chute such that the flights push the material as they move along the floor of the chute.
Before the advent of polymeric materials usable in conveyor chain applications, ~he flights were usually of steel and were either welded or bolted to the chain links. For very heavy duty applications, steel flights welded or bolted to the chain links are still preferred. However, there are several problems relating to the use of steel flights. One of these is that they are expensive both due to high material cost and due to a larye amount of labor required to weld or bolt the steel flights to the chain links. Another problem of steel flights is that they are heavy and thereby make the chain difficult to handle and increase the amount of power xequired to drive the chain.
Polymeric links are relatively easy to fabricate, lighter in weight, easy to handle and require less energy to drive as part of a conveyor chain. Polymeric links may also be relatively easy to attach to the chain links, however, the mode of attachment must nevertheless be of sufficient strength to transfer the driving force of the chain to the flights.
Conveyor flights of both the steel and polymeric type are subject to undue stresses due to obstructions or binding of the material being conveyed which provides a force resisting the 1 driving force of the conveyor chain. The result is that the flight may be d~maged or may be detached from the chain link or the chain link may be damaged. Breakage of the flight is more of a problem with polymeric flights than with steel flights due to the lower strength characteristics of polymeric materials. Thus, there is a need for improved polymeric flight attachments which have a greater ability to transfer obstruction or binding resistive forces to the chain link wi-thout either breaking or detaching from the link.
It is a general object of this invention to provide a polymeric flight element for a conveyor chain which has a structure and is attached to the chain such that the load carrying force applied to the flight element by the chain and forces resisting the load carrying force are transferred between the flight element and the chain in a manner minimi~ing breakage of the flight element or its detachment from the chain.
The invention is accomplished by providing a polymeric flight element having a side member attached to a sidebar of a link of a conveyor chain, a conveyor arm extending laterally from the side member in-termediate the ends of the side member, and at least one button positioned on the side member at a distance from the conveyor arm and projecting from the side member through an opening in the sidebar and engaging the sides of the sidebar opening such that force due to the conveying movement of the chain and forces resisting the con~eying force are transferred through the buttons to the side member and conveyor arm. By spacin~ the button at a distance from the arm extending from the sidebar, the amount of stress on the side member is distributed along the length of the side membar at the locations of attachment of the arm to the side member and the location of the engagement of the button with the sidebar.
The side member may be attached to the chain link sidebar by a pin integral with the side member and extending through a hollow rivet connecting parallel chain sidebars. The button functions as a load carrying means receiving and transferring a por-tion of the force that would be otherwise applied to the pin to thus reduce the forces applied to the 1 pin. The conveyor arm of the flight element may have a weakened area extending across its width. At the weakened area, the arm bends when obstructed or bound by the material it is moving to thereby decrease the amount of resis~ing force in the path of the arm and assist in its being freed of the obstruction or binding xesistance.
A more thorough understanding oF the present invention will be gained by reading the following description of -the preferred embodiments with reference to the accompan~ing drawings in which:
Figure 1 is a top view o~ a conveyor chain includin~ a flight element in accordance wi-th the present inven-tion;
Figure 2 is a perspective view of one-half of the fli~ht element shown in Figure l;
Figure 3 is a broken-away top view, par-tially in section, of the conveyor chain and flight element shown in Figure 1 ;
Figure 4 is a side view of the chain and flight element; and Figure 5 is a top view of a portion of the flight element showing it in a bent condi-tion.
Referring to Figures 1 and 4, a flight element 2 according to the invention is shown mounted on a conveyor chain 4 which is typically made of steel. The chain 4 comprises a plurality of inner chain links 6 and a plurality of outer chain links 8. The inner chain links 6 each include parallel inner sidebars 10 and 12 respectively having opposite ends 14 and 16 and opposi-te ends 18 and 20. The outex chain links 8 each include parallel outer sidebars 22 and 24 respectively having opposite ends 26 and 28 and opposite ends 30 and 32. The ends 14 and 18 and the ends 16 and 20 of the sidebars 10 and 12 are connected together by bushings 34 which have an interference fit with the sidebars 10, 12. The connected ends 14, 18 and 16, 20 o~ the sidebars 10, 12 which comprise the inner chain links 6 are respectively joined by bushings in the form of hollow rivets 36 to ends 26, 30 and 28, 32 of the sidebars 22, 24 of outer links 21~D
1 8- The rivets 36 have an interference fit with the sidebars 22, 24 and a clearance fit with the bushings 34 so that the rivets 36 and -thereby the outer chain links 8 are ~ree to ro-tate relative to the inner sidebars lO, 12. In the illustrated embodimen-t, rollers 38 are mounted on the bushings 34.
The flight elements 2 each include two integral, molded polymeric material conveyor members 42 and 60 which may be identical to each other. The conveyor member 42 includes a slde member 46, a pin 48 and a conveyor arm 44 having a weakened area 56. The conveyor member 60 similarly includes a side member 62, a pin 64 and a conveyor arm 66 having a weakened area 68. Due to the identity of these elements of the conveyor members 60 and 42, onl~ components of conveyor member 42 will be described in detail. The side member 46 is positioned adjacent to and preferably against the sidebar 22 of outer chain link 8 and includes ends 50 and 52 respectively juxtaposed with the ends 26 and 28 of the sidebar 22. The conveyor arm 44 extends away from the chain 4 and transverse to the direction of movement of the chain at a position intermediate the ends 50 and 52 of the side member 46.
The conveyor member 60 has an end 88 from which the pin extends through hollow rivet 36 and the side member 46 of the conveyor member 42. The side member 46 includes a receptacle 70 having a varying inside diame-ter which corresponds to a varying outside diameter of the end of the pin 64 such -that the pin 64 is received with a snap fit in the receptacle 70. ~imilarly, the pin 48 extending from the end 52 of the side member 46 has a varying outside diameter which is received with a snap fit in a receptacle 58 having a varying outside diameter and located at the end of side member 62. In this manner the conveyor members 42 and 60 are connected together to form the flight element 2 and are attached to and move with the chain links 8 of the chain 4.
The side member 46 includes a pair of buttons 72 and 74 positioned along the length of the member 46 at a distance spaced from the arm 44 and projecting toward the sidebar 22. The side member 62 includes a pair of buttons 76 and 78 positioned along the length of the member 62 at a distance spaced from the arm 66 ~2~
1 and projectlng toward the sidebar 24. The sidebar 22 has a pair of openin~s 80 and 82 positioned along the length of -the sidebar 22 at positions opposite the but-tons 72 and 74 and the sidebar 24 has a pair of openings 84 and 86 similarly posi.tioned along the length of the sidebar 24 at positions opposite the buttons 76 and 78. The buttons 72, 74 and 76, 78 respectively project into and engage the sides of the openings ao, 82 and 84, 86.
In conveying loose material 54 as -the chain 4 moves in the direction of the arrow (see Figures 1 and 5) along a chute or trough, typicall~ by pushing the material 54 with the arms 4~ and 6~ of the flight elements 2, obstructions or binding of the material being conveyed may occur and cause excessive resistance force to the chain driving force on the arms 44 and 66. The effort of the chain to move the arms past the obstructions or to overcome the binding may cause the detachment of the side members from the chain links and/or the breaking of the pins or conveyor arms. However, the provision of the buttons 72, 74 and 76, 78 such that they project through the sidebars 22 and 24 and bear against the sides of the openings 80, 82 and 84, 86 in the direction of the forces applied to the pins results in the buttons carrying a portion of the load or forces applied to the flight elements 2 by the chain 4 or the obstructing forces.
Thus, the full application of such forces to pins 48 and 64 is prevented. Also important in minimi~ing breakage of the flight 25 elements is the spacing of the buttons 72, 74 and 76, 78 respectively from the positions of the arms 4~ and 66. Such spacing separates the high stress areas at the locations of the attachment of the arms to their side members, the engagement of the huttons with the chain links, and the attachment of the side members to the chain links through the pins. As a consequence, the flight elements 2, even though they are made from a polymeric material, can withstand a much greater resistance to the driving force of the conveyor chain 4 and the the obstructing forces so that problems due to breaking of the flight elements or their detachment from the chain links are considerably decreased.
A further improvement to the flight elements 2 in the way of avoiding breakage of the elements is the provision of the --6~
36~
1 weakened lines or areas 56 and 68 which cooperate with the buttons 72, 74 and 76, 78 to prevent failure of the fliyht elements 20 In the event that the arms 44 and 66 are unduly obstructed, they will bend at the weakened areas to assist in the release of the arms from -the obstruction. ~hus, through the cooperation of the buttons 72, 74 and 76, 78 and the weakened areas on the arms 44, 66, the ability of the flight elements 2 to avoid breakage is considerably enhanced.
It will be understood -that the foregoing description of the present invention is for purposes of illustration only and that the invention is susceptible to a number of modifications or changes, none of which entail any departure from the spirit and scope of the present invention as defined in the hereto appended claims.
Claims (10)
1. In a flight element for a material conveying chain having a plurality of chain links each including a pair of spaced apart parallel sidebars having opposite ends joined to adjacent pairs of chain link sidebars by a hollow rivet, the flight element being of a polymeric material and including a pair of side members each positioned adjacent to an outer side of one of the sidebars of a chain link and attached to the link, the combination comprising:
an arm integral with and extending laterally from at least one of the flight element side members at a position intermediate the ends of the one side member, the arm and side member acting to apply chain conveying force and receive forces resisting the conveying force;
the link sidebar adjacent to said one side member having a first opening positioned opposite the one side member and spaced from the arm extending from the one side member in a direction transverse to the direction of extension of the arm;
and a first projection integral with and extending from the one side member at a position relative to the arm extending from the one side member corresponding to the position of said opening in the adjacent link sidebar, the first projection extending into the first opening and engaging the adjacent sidebar within the first opening whereby the projection transfers stress between the arm and the link sidebar through the side member at a distance from the position of the arm on the one side member.
an arm integral with and extending laterally from at least one of the flight element side members at a position intermediate the ends of the one side member, the arm and side member acting to apply chain conveying force and receive forces resisting the conveying force;
the link sidebar adjacent to said one side member having a first opening positioned opposite the one side member and spaced from the arm extending from the one side member in a direction transverse to the direction of extension of the arm;
and a first projection integral with and extending from the one side member at a position relative to the arm extending from the one side member corresponding to the position of said opening in the adjacent link sidebar, the first projection extending into the first opening and engaging the adjacent sidebar within the first opening whereby the projection transfers stress between the arm and the link sidebar through the side member at a distance from the position of the arm on the one side member.
2. The combination according to claim 1 wherein the arm includes a weak area across its length whereby the arm may bend due to excessive resistance to the conveying force applied by it to reduce stress on the one side member and the pin.
3. The combination according to claim 1 or 2 wherein:
the link sidebar adjacent to said one side member has a second opening positioned opposite the one side member and spaced from the arm extending from the one side member in a direction opposite to the spacing direction of the first hole from the arm;
and further comprising a second projection integral with and extending from the one side member at a position spaced from the arm extending from the one side member and in a direction opposite to the spacing direction of the first projection from the arm, the second projection extending into the second opening and engaging the adjacent sidebar within the second opening.
the link sidebar adjacent to said one side member has a second opening positioned opposite the one side member and spaced from the arm extending from the one side member in a direction opposite to the spacing direction of the first hole from the arm;
and further comprising a second projection integral with and extending from the one side member at a position spaced from the arm extending from the one side member and in a direction opposite to the spacing direction of the first projection from the arm, the second projection extending into the second opening and engaging the adjacent sidebar within the second opening.
4. In a polymeric flight element mounted on and movable with a chain for providing force for moving material, the chain having a plurality of chain links each including a hollow rivet and a pair of spaced apart parallel sidebars having opposite ends joined to adjacent pairs of chain link sidebars by the hollow rivet, the flight element comprising:
a pair of side members each positioned adjacent to an outer side of one of the sidebars of a chain link;
arm means integral with and extending laterally from at least one side member for applying moving force to material as the arm means moves with the conveyor chain and receiving resistive forces to the conveying force;
a pin integral with and extending from the one side member through the hollow rivet and connected to the other side member whereby the flight element is attached to the chain link and a portion of the moving and resistive forces are transferred between the chain link and the arm means through the pin and the one side member; and first load carrying means comprising an integral part of the one side member and bearing against the most adjacent sidebar in the directions of the moving and resistive forces applied to the pin for receiving and transferring a portion of said forces to the arm means through the one side member and reducing the portion of the forces applied to the pin.
a pair of side members each positioned adjacent to an outer side of one of the sidebars of a chain link;
arm means integral with and extending laterally from at least one side member for applying moving force to material as the arm means moves with the conveyor chain and receiving resistive forces to the conveying force;
a pin integral with and extending from the one side member through the hollow rivet and connected to the other side member whereby the flight element is attached to the chain link and a portion of the moving and resistive forces are transferred between the chain link and the arm means through the pin and the one side member; and first load carrying means comprising an integral part of the one side member and bearing against the most adjacent sidebar in the directions of the moving and resistive forces applied to the pin for receiving and transferring a portion of said forces to the arm means through the one side member and reducing the portion of the forces applied to the pin.
5. The flight element according to claim 4 wherein the load carrying means is positioned along the length of the one side member at a distance from the arm means.
6. The flight element according to claim 5 wherein the one side member includes a second integral load carrying means positioned along the length of the side member at a distance from the arm means in a direction opposite to the direction of the first load carrying means and bearing against the most adjacent sidebar in the directions of the forces applied to the pin for receiving and transferring a portion of said forces to the arm means through the one side member and reducing the portion of the moving force applied to the pin.
7. The flight element according to claim 5 wherein the load carrying means is positioned along the length of the one side member at a distance from the pin.
8. The flight element according to claim 4, 5 or 6 wherein each of the load carrying means comprises a projection integral with the one side member and extending into the adjacent sidebar.
9. The flight element according to claim 7 wherein:
said adjacent sidebar includes an opening aligned with each of the projections; and each projection extends into an opening and bears against the side of the opening.
said adjacent sidebar includes an opening aligned with each of the projections; and each projection extends into an opening and bears against the side of the opening.
10. The flight element according to claim 5, 6 or 7 wherein the arm means includes a weak area across its length for permitting the arm to bend when excessive force is applied to it.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US70832585A | 1985-03-05 | 1985-03-05 | |
| US708,325 | 1985-03-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1218620A true CA1218620A (en) | 1987-03-03 |
Family
ID=24845347
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000491590A Expired CA1218620A (en) | 1985-03-05 | 1985-09-26 | Polymeric flights for conveyor chain |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1218620A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113800203A (en) * | 2021-08-30 | 2021-12-17 | 谢宇震 | Mining rack rail and scraper conveyor |
-
1985
- 1985-09-26 CA CA000491590A patent/CA1218620A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113800203A (en) * | 2021-08-30 | 2021-12-17 | 谢宇震 | Mining rack rail and scraper conveyor |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB2107020A (en) | A conveyor chain | |
| GB1586549A (en) | Bi-directional hinged conveyor | |
| US5598916A (en) | Changing headless pivot rods from edges of modular conveyor belts | |
| US2954113A (en) | Conveyer chain attachments | |
| CA2237686C (en) | Side-flexing conveyor construction | |
| GB1561547A (en) | Snap-on topplate assembly for a roller chain | |
| US6260345B1 (en) | Silent chain | |
| EP0171561B1 (en) | Link chain | |
| EP1666384B1 (en) | Side-flexing conveyor chain having members joined by linkages | |
| CA1206352A (en) | Polymeric snap through attachment for hollow rivet chain | |
| CA2019124C (en) | Chain and flight conveyor | |
| US4629063A (en) | Chain link for a product capturing chain | |
| US4150584A (en) | Double flexing chain | |
| US5168981A (en) | Belt chain | |
| CA1218620A (en) | Polymeric flights for conveyor chain | |
| US6308510B1 (en) | Chain | |
| US4143512A (en) | Anti-collapsing chain having loop center link | |
| EP0092382B1 (en) | Improvements in or relating to chain components | |
| US5069328A (en) | Double central chain belt assembly | |
| GB2045340A (en) | Hinge joint | |
| WO1981000244A1 (en) | Conveyor | |
| CA1310988C (en) | Offset attachment sidebar chain | |
| EP0926082A1 (en) | Conveyor chain | |
| US2704943A (en) | Conveyer chain | |
| EP1574747A2 (en) | A chain |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |