CA1182065A - Padded chain conveyor drive - Google Patents
Padded chain conveyor driveInfo
- Publication number
- CA1182065A CA1182065A CA000403281A CA403281A CA1182065A CA 1182065 A CA1182065 A CA 1182065A CA 000403281 A CA000403281 A CA 000403281A CA 403281 A CA403281 A CA 403281A CA 1182065 A CA1182065 A CA 1182065A
- Authority
- CA
- Canada
- Prior art keywords
- pad
- chain
- driving surface
- flexible
- forming
- 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
- B65G13/00—Roller-ways
- B65G13/02—Roller-ways having driven rollers
- B65G13/06—Roller driving means
- B65G13/07—Roller driving means having endless driving elements
Abstract
PADDED CHAIN CONVEYOR DRIVE
ABSTRACT OF THE DISCLOSURE
A conveyor drive chain is equipped with pads of a high friction, resilient material. Each pad has a body secured to and overlying one link of the chain and has an extension at each end overlying the adjacent chain link.
The extensions are wedge shaped, lengthwise of the chain, having one side face extending at an angle to the axis of the chain whereby the extension portions of two adjacent pads are seated side-by-side with the line of separation between them laterally inclined across the chain.
ABSTRACT OF THE DISCLOSURE
A conveyor drive chain is equipped with pads of a high friction, resilient material. Each pad has a body secured to and overlying one link of the chain and has an extension at each end overlying the adjacent chain link.
The extensions are wedge shaped, lengthwise of the chain, having one side face extending at an angle to the axis of the chain whereby the extension portions of two adjacent pads are seated side-by-side with the line of separation between them laterally inclined across the chain.
Description
~8~D6iS
FIELD OF TIIE IN~ENTION
This invention relates to powered conveyors and, more particularly, to an improved propelling member for powering such a conveyor, which propelling member consists of a primary, high strength, tension load-carrying chain and a padding which provides a high friction, non-metallic roller or article contacting surface for the propelling member.
BACKGROUND OF TH~ INVENTION
Over the years, various combinations o~ chain and rubber or plastic pads or belts have been devised and used :in the convcyor :Eleld. These have i.ncluded devices in which the pad or high riction member is a continuous band, similar to a belt, which is mounted on the chain. Other devices l.5 .include ind:ivldual pads, one of which is mo~mted on each link oi~ thc cha.i.n, or pacls o:~ greater length designed to overlay a nulllbor o:~ adjacent links o~ the cha;.n. ~xamples o these types o~ construction are found in patents such as patent
FIELD OF TIIE IN~ENTION
This invention relates to powered conveyors and, more particularly, to an improved propelling member for powering such a conveyor, which propelling member consists of a primary, high strength, tension load-carrying chain and a padding which provides a high friction, non-metallic roller or article contacting surface for the propelling member.
BACKGROUND OF TH~ INVENTION
Over the years, various combinations o~ chain and rubber or plastic pads or belts have been devised and used :in the convcyor :Eleld. These have i.ncluded devices in which the pad or high riction member is a continuous band, similar to a belt, which is mounted on the chain. Other devices l.5 .include ind:ivldual pads, one of which is mo~mted on each link oi~ thc cha.i.n, or pacls o:~ greater length designed to overlay a nulllbor o:~ adjacent links o~ the cha;.n. ~xamples o these types o~ construction are found in patents such as patent
2 792 9Z8 entitled "Attachment Clip For Lumber Conveyor Chains"
.issued ~lay 21, 1957 to W.G. Holz; patent 3 189 161 entitled "Powered Roller Curve" issued June 15, 1965 to D.A. Schneider et a].; patent 3 306 430 entitled "Belt-Chain Combination Drive"
issued February 28, 1967; and patent 4 074 805 entikled "Installation Equipment With A Driving Mechanism" issued February 21, 1978 to ~odewes.
While each of the constructions disclosed by the preceding patents has various merits, these pad and chain combinations have not been entirely satis~actory. While they have provided the advantage of the strength of a chaln and the high frictional characteristics of the rubber or plastic pad, they have failed to solve the problem of ~ 8 ~
] excessive noise. They have also failed to solve the problem of quick and inexpensive replacement when sections of the pad are damaged, lost, or excessively worn. Despite these shortcomings, the advantage of this type of a combination has been recognized and as a result has been extensively used because the combination provides a propelling member or drive which has wear characteristics much improved over belts, and e:Liminates the dual problems of tracking and stretch, which are experienced with even the best belt-driven conveyor system.
B~IEF DESCRIPTION OF THE INVENTION
The invention provides individual pads which are sccurccl to the chain with each pad being so shaped that it has a portion at each end overlaying at least one other link than the one to which it is attached. Further, each of the cnds is shap~d such that it tapers to a point, thus producing n I j.TIC o separ<ltion between it and the end of the next ~ljacent pacl that is at a bias to the axis of th~ chain.
In this manner, as the chain and pads are moved beneath the rollers of the conveyor, the transition from one pad to the other ls gradual and there is no abrupt or sudden transfer to produce either noise or interruption or variation in the motion transmitted to the roller. While the ends of the inclividual pads are radiused to facilitate the transit about the drive sprocke~s at the ends of the runs of the chain, because of the overlap and the gradual transition created by the biased line of demarcation between the individual pads, this radiusing has no afect upon the drive of the rollers.
BRIEF DESCRIPTIO~ OF THE DRAWINGS
Fig. 1 is a :Eragmentary, sectional, elevation view oE ~ conveyor equi~pped with this invention with the side of 1 the track supporting the chain removed for clarity;
Fig. 2 is a fragmentary, enlarged plan view of the chain and pad combination of this invention;
Fig. 3 is a fragmentary, enlarged partially broken side view of the chain equipped with the pads of this inven-tion;
Fig. 4 is a sectional elevation view taken along the plane IV-IV of Fig. 3 showing the propelling member nested in its supporting channel;
Fig. 5 is a side elevation view of one of the pads of this invention;
]ig. 6 is a plan view of one of the pads of this invent:ion; and Fig. 7 is an end view of one of the pads of this L~ invention.
DISCI~ "llON 0~ PRI!FE!I;'RT~D r~T30~M~!NT
l~eferring to lig. 1, the numeral LO indicates a conveyor having sides 11 between which are rotatably mounted a plurality of rollers 12 which, collectively, provide an 2n article conveying surface. Beneath the rollers is a channel 13 providing a guide and support for the propelling member 14 (Figs. 1 and 4). The channel l3 has a liner 19 to provlde a wear resistant, low friction surface :Eor guiding and support-ing the propelling member 14. The channel 13 and thus the propelling member 14 can be supported in any suitable, conventional manner such as by the springs 16 which rest on the crosspieces 17 of the conveyor frame. All of the struc-ture which has been described is conventional and has long been used in the conveyor art.
As best seen in Figs. 2 and 3, the propelling member 14 has a chain 15 of conventional construction consisting of
.issued ~lay 21, 1957 to W.G. Holz; patent 3 189 161 entitled "Powered Roller Curve" issued June 15, 1965 to D.A. Schneider et a].; patent 3 306 430 entitled "Belt-Chain Combination Drive"
issued February 28, 1967; and patent 4 074 805 entikled "Installation Equipment With A Driving Mechanism" issued February 21, 1978 to ~odewes.
While each of the constructions disclosed by the preceding patents has various merits, these pad and chain combinations have not been entirely satis~actory. While they have provided the advantage of the strength of a chaln and the high frictional characteristics of the rubber or plastic pad, they have failed to solve the problem of ~ 8 ~
] excessive noise. They have also failed to solve the problem of quick and inexpensive replacement when sections of the pad are damaged, lost, or excessively worn. Despite these shortcomings, the advantage of this type of a combination has been recognized and as a result has been extensively used because the combination provides a propelling member or drive which has wear characteristics much improved over belts, and e:Liminates the dual problems of tracking and stretch, which are experienced with even the best belt-driven conveyor system.
B~IEF DESCRIPTION OF THE INVENTION
The invention provides individual pads which are sccurccl to the chain with each pad being so shaped that it has a portion at each end overlaying at least one other link than the one to which it is attached. Further, each of the cnds is shap~d such that it tapers to a point, thus producing n I j.TIC o separ<ltion between it and the end of the next ~ljacent pacl that is at a bias to the axis of th~ chain.
In this manner, as the chain and pads are moved beneath the rollers of the conveyor, the transition from one pad to the other ls gradual and there is no abrupt or sudden transfer to produce either noise or interruption or variation in the motion transmitted to the roller. While the ends of the inclividual pads are radiused to facilitate the transit about the drive sprocke~s at the ends of the runs of the chain, because of the overlap and the gradual transition created by the biased line of demarcation between the individual pads, this radiusing has no afect upon the drive of the rollers.
BRIEF DESCRIPTIO~ OF THE DRAWINGS
Fig. 1 is a :Eragmentary, sectional, elevation view oE ~ conveyor equi~pped with this invention with the side of 1 the track supporting the chain removed for clarity;
Fig. 2 is a fragmentary, enlarged plan view of the chain and pad combination of this invention;
Fig. 3 is a fragmentary, enlarged partially broken side view of the chain equipped with the pads of this inven-tion;
Fig. 4 is a sectional elevation view taken along the plane IV-IV of Fig. 3 showing the propelling member nested in its supporting channel;
Fig. 5 is a side elevation view of one of the pads of this invention;
]ig. 6 is a plan view of one of the pads of this invent:ion; and Fig. 7 is an end view of one of the pads of this L~ invention.
DISCI~ "llON 0~ PRI!FE!I;'RT~D r~T30~M~!NT
l~eferring to lig. 1, the numeral LO indicates a conveyor having sides 11 between which are rotatably mounted a plurality of rollers 12 which, collectively, provide an 2n article conveying surface. Beneath the rollers is a channel 13 providing a guide and support for the propelling member 14 (Figs. 1 and 4). The channel l3 has a liner 19 to provlde a wear resistant, low friction surface :Eor guiding and support-ing the propelling member 14. The channel 13 and thus the propelling member 14 can be supported in any suitable, conventional manner such as by the springs 16 which rest on the crosspieces 17 of the conveyor frame. All of the struc-ture which has been described is conventional and has long been used in the conveyor art.
As best seen in Figs. 2 and 3, the propelling member 14 has a chain 15 of conventional construction consisting of
-3--1 links 20 and 20a pivotally joined together by pins 21 surrounded by roller sleeves 22. Each link, between the roller sleeves 2~ at its opposite ends 9 provides an opening 23 of somewhat hourglass shape (Fig. 3). This type of chain is conventional and when designed for lighter duty, it is commonly marketed as bicycle chain.
This type of chain has been used for many years in the conveyor industry.
~Iounted to the chain are a plurality of pads 30.
Each pad has a primary body portion 31 including a central section 32 and a pair of end portions 33 and 33a (Fig. 5).
'Ihe central portion extends the full width of the opening 23 between a pair of the sides forming one of the links 20a and also the length of the opening 23 which corresponds l~ substantlally to the spacing between a pair of the roller s~eevcs 22. Each o~ the ends extends lengthwise oE the chain suEEiciently to overlap the remainder of the link to which the pad is attached and to overlap all or almost all of the next adjacent link. Each of the ends 33 and 33a is tapered by having one side extending parallel to the sides of the chain and the other side inclined in an oblique angle to the longitudinal axis of the chain whereby each end gradually tapers to a point lengthwise of the chain.
Opposite ends of the same pad are tapered on opposite sides whereby the vertical planes of the inclined sides of each link are parallel, thus producing a pad having a top shape which is generally that of an oblique parallelogram. The top surface of the pad is flat except at the ~ery tip ends of the end portions ~hich are downwardly radiused at 37 to 3~ reduce or eliminate the problem of the ends projecting up any significant distance from the remaining surface of the
This type of chain has been used for many years in the conveyor industry.
~Iounted to the chain are a plurality of pads 30.
Each pad has a primary body portion 31 including a central section 32 and a pair of end portions 33 and 33a (Fig. 5).
'Ihe central portion extends the full width of the opening 23 between a pair of the sides forming one of the links 20a and also the length of the opening 23 which corresponds l~ substantlally to the spacing between a pair of the roller s~eevcs 22. Each o~ the ends extends lengthwise oE the chain suEEiciently to overlap the remainder of the link to which the pad is attached and to overlap all or almost all of the next adjacent link. Each of the ends 33 and 33a is tapered by having one side extending parallel to the sides of the chain and the other side inclined in an oblique angle to the longitudinal axis of the chain whereby each end gradually tapers to a point lengthwise of the chain.
Opposite ends of the same pad are tapered on opposite sides whereby the vertical planes of the inclined sides of each link are parallel, thus producing a pad having a top shape which is generally that of an oblique parallelogram. The top surface of the pad is flat except at the ~ery tip ends of the end portions ~hich are downwardly radiused at 37 to 3~ reduce or eliminate the problem of the ends projecting up any significant distance from the remaining surface of the
-4-06~i 1 propelling member as the pad and the chain pass around the pulleys at the end of each run.
Projecting from the bottom of the center section of each pad is an anchor member or stem 40. The stem 40 is of the full width of the pad and its lower end is bi-Eurcated at 41 to form a pair of fingers 4Z and 42a. The fingers -Elare lengthwise of the pad toward the end portions 33 and 33a and thus produce recessed pockets 43 and 43a on opposite sides o-f the anchor member. The pockets 43 and 43a are of a size and shape to snugly and firmly receive and seat against and around the roller sleeves 22 at the ends o-f the chain Ii.nk to Wh:i.C]I the pad is secured. It will be noted that the biEurcation slot 41 separating tlle Eingers 42 and 42a is V-shaped. This facilitates the compression or squeezing lS to~e,ther oE the fingers 42 and 42a when the stem is inserted ~I1 rOIJgh tl1Q operling 23 in one oE the chain llnks.
rl'he central s~ction 32 has a pair of blind openings 44, one on each side. The combined deptlls of the openings 44 is less than the width of the pad leaving a longitudinal central web 45. These openings facilitate molding o-f the pacl by helping to control shrlnkage which produces sink marks in the surface due to differentials in shrinkage between sections of substantially different wall thickness. The central web 45 provides continuous longitudinal support for the pad's surface.
The pad is preferably molded from a material having high resistance to scuff and wear and also having a high coefficient oE surface friction. The material must have a limited degree of resilience to permit it to cooperate with 3() the chain and also to permit it to be installed on the chain.
A preferred material for the manuEacture of the pads is a ~BZ~
1 moldable urethane, for example, urethane marketed by E.I.
Dupont de ~emoirs under the trademark "Hytrel".
It will be recognized that the invention provides a continuous surface so far as each individual driven roller s is concerned contacted by the propelling member. The transfer of the roller from one pad to another is gradual, as the sloping line of separation or demarcation passes beneath the roller. Thus, there is nothing to bounce or vibrate the roller and its movement is continuous, and the noise incident to a transverse separation line between pads passing under a roller is eliminated. This makes it practical ko utiliY~e individual pads of short length. This is ~art:icularly desiral)le because such pads are easler and s:impler to install and do not have a tendency to separate IS Eroln thc cllain as the propelling member passes arouncl the ~Ir;ive ~ullcys. ~lso, as normally occurs with any chain, tllore is, over a ~)eriod oE timc, a stretchiJIg oE the cha;n ~ue to wear and other factors. Since each pad is secured to one link only, and bridge the surface of only a short length of the chain, this stretching of the chain has no adverse affect upon the pads. P.ven if it causes some increase in the gap between links, this will not cause trouble because the long overlap between links will prevent any increase in noise or change in roller operational characteristics. Chain ~5 stretch has been a problem where long pads were utilized which were continuous for a number of links because, while the chain stretched, the pads did not s~retch correspondingly, and thus there was a tendency for the pads to pull loose :Erom the chain as the hours of usage of the chain increased.
Another problem encountered with long pads has been the stretching of the pads as the chain/pad combination passes ~8~6~
1 around the pulleys due to the increase in path length for the pads because of the increased radius oE their path o-f travel. This alternate stretching and contracting not only materially increases pad wear, it also causes the pads to pull free of the chain.
The arrangemen-t is also particularly desirable because it renders immaterial the length of the chain since the pads are installed one by one. It is also true that the pads can be quickly, easily and relatively inexpensively replaced as needed.
It will be recognized that while a preferred embo(liment oF the invention has been described, that other elnl~ocl~ Qnts can be made without departing from the principles o~ the invention. Such modifications are to be considerecl l!i as include(l in the hereinafter appended claims unless these Glaims hy thei-r langua~e expressly state otherwise.
Projecting from the bottom of the center section of each pad is an anchor member or stem 40. The stem 40 is of the full width of the pad and its lower end is bi-Eurcated at 41 to form a pair of fingers 4Z and 42a. The fingers -Elare lengthwise of the pad toward the end portions 33 and 33a and thus produce recessed pockets 43 and 43a on opposite sides o-f the anchor member. The pockets 43 and 43a are of a size and shape to snugly and firmly receive and seat against and around the roller sleeves 22 at the ends o-f the chain Ii.nk to Wh:i.C]I the pad is secured. It will be noted that the biEurcation slot 41 separating tlle Eingers 42 and 42a is V-shaped. This facilitates the compression or squeezing lS to~e,ther oE the fingers 42 and 42a when the stem is inserted ~I1 rOIJgh tl1Q operling 23 in one oE the chain llnks.
rl'he central s~ction 32 has a pair of blind openings 44, one on each side. The combined deptlls of the openings 44 is less than the width of the pad leaving a longitudinal central web 45. These openings facilitate molding o-f the pacl by helping to control shrlnkage which produces sink marks in the surface due to differentials in shrinkage between sections of substantially different wall thickness. The central web 45 provides continuous longitudinal support for the pad's surface.
The pad is preferably molded from a material having high resistance to scuff and wear and also having a high coefficient oE surface friction. The material must have a limited degree of resilience to permit it to cooperate with 3() the chain and also to permit it to be installed on the chain.
A preferred material for the manuEacture of the pads is a ~BZ~
1 moldable urethane, for example, urethane marketed by E.I.
Dupont de ~emoirs under the trademark "Hytrel".
It will be recognized that the invention provides a continuous surface so far as each individual driven roller s is concerned contacted by the propelling member. The transfer of the roller from one pad to another is gradual, as the sloping line of separation or demarcation passes beneath the roller. Thus, there is nothing to bounce or vibrate the roller and its movement is continuous, and the noise incident to a transverse separation line between pads passing under a roller is eliminated. This makes it practical ko utiliY~e individual pads of short length. This is ~art:icularly desiral)le because such pads are easler and s:impler to install and do not have a tendency to separate IS Eroln thc cllain as the propelling member passes arouncl the ~Ir;ive ~ullcys. ~lso, as normally occurs with any chain, tllore is, over a ~)eriod oE timc, a stretchiJIg oE the cha;n ~ue to wear and other factors. Since each pad is secured to one link only, and bridge the surface of only a short length of the chain, this stretching of the chain has no adverse affect upon the pads. P.ven if it causes some increase in the gap between links, this will not cause trouble because the long overlap between links will prevent any increase in noise or change in roller operational characteristics. Chain ~5 stretch has been a problem where long pads were utilized which were continuous for a number of links because, while the chain stretched, the pads did not s~retch correspondingly, and thus there was a tendency for the pads to pull loose :Erom the chain as the hours of usage of the chain increased.
Another problem encountered with long pads has been the stretching of the pads as the chain/pad combination passes ~8~6~
1 around the pulleys due to the increase in path length for the pads because of the increased radius oE their path o-f travel. This alternate stretching and contracting not only materially increases pad wear, it also causes the pads to pull free of the chain.
The arrangemen-t is also particularly desirable because it renders immaterial the length of the chain since the pads are installed one by one. It is also true that the pads can be quickly, easily and relatively inexpensively replaced as needed.
It will be recognized that while a preferred embo(liment oF the invention has been described, that other elnl~ocl~ Qnts can be made without departing from the principles o~ the invention. Such modifications are to be considerecl l!i as include(l in the hereinafter appended claims unless these Glaims hy thei-r langua~e expressly state otherwise.
Claims
The embodiments of the invention in which an exclusive property or privilege is claimed are defined as follows:
A propelling member for a conveyor, said member having a chain and a flexible element secured thereto for forming a high friction driving surface, said element comprising a plurality of individual pads arranged in tandem, each pad being secured to a link of said chain, each pad overlapping a plurality of the links of said chain and shaped to form lines of separation between pads which extend across the surface of said element at a minor angle to the longitudinal axis of said chain whereby each end of each pad laterally of said member overlaps an end of each adjacent pad.
A propelling member as described in claim 1 further characterized in that each pad has an anchor member inter-mediate its ends for securing it to said chain.
A propelling member as described in claim 2 further characterized in that each end of each o-f the pads is radiused away from its driving surface.
A propelling member as described in claim 2 further characterized in that each anchor member projects partially through said chain and has a bifurcated end forming a pair of fingers which resiliently seat around portions of said chain on the side opposite from said driving surface.
A propelling member as described in claim 2 further characterized in that each of said links has a transverse roller sleeve at each end forming an opening therebetween, each of said anchor members extending through one of said openings and having a bifurcated end forming a pair of oppositely extending fingers, said stem being of a resilient material whereby said end can be compressed and passed through one of said openings and capable of reexpanding when the pad is fully seated to partially wrap around said roller sleeves to pull the pad tightly against the chain.
A propelling member for a conveyor, said member having a chain and a flexible element secured thereto and forming a high friction driving surface, said element characterized in that it comprises a plurality of individual pads arranged in tandem, each pad being of oblique parallelo-gram shape and overlying a plurality of links of said chain with the ends of each pad overlapping each other lengthwise of said chain; means at the center of each pad securing it to said chain.
A propelling member for a conveyor as described in claim 6 further characterized in that said each end of each of the links is radiused away from its driving surface.
A flexible pad for attachment to a drive chain for a conveyor, said pad having a main body forming a driving surface of generally oblique parallelogram shape with a central section and opposite ends each tapered lengthwise thereof, said driving surface being generally flat; a mounting stem extending from the opposite face of said central section and geometrically centered with respect to said body for securing said pad to the drive chain; said pad being molded as a single piece from a flexible, wear resistant material having a high coefficient of friction.
A flexible pad as described in claim 8 further characterized in that the end of said stem is bifurcated and has a pair of fingers extending divergently from each other lengthwise of said pad for gripping the chain.
A flexible pad as described in claim 9 further characterized in that the ends of said end sections are radiused away from its driving surface.
A flexible pad as described in either claims 8 or 9 further characterized in that said pad has a pair of later-ally extending openings therein centered between the ends of said pad and adjacent the juncture of said main body and said mounting stem, said openings being blind and forming a longitudinally extending web therebetween for supporting the driving surface of said pad.
A flexible pad as described in claim 2 wherein said anchor member is a mounting stem of a size for insertion through the central aperture in a link of the chain; each pad having a pair of laterally extending openings therein centered between the ends of said pad and adjacent the juncture of said main body and said mounting stem, said openings being blind and forming a longitudinally extending web therebetween for supporting the driving surface of said pad.
A flexible pad as described in claim 12 wherein said openings are trapezoidal in shape.
A propelling member for a conveyor, said member having a chain and a flexible element secured thereto for forming a high friction driving surface, said element comprising a plurality of individual pads arranged in tandem, each pad being secured to a link of said chain, each pad overlapping a plurality of the links of said chain and shaped to form lines of separation between pads which extend across the surface of said element at a minor angle to the longitudinal axis of said chain whereby each end of each pad laterally of said member overlaps lengthwise of the chain and end of each adjacent pad and a substantial por-tion of the links of the chain adjacent to the link to which the pad is attached.
A propelling member for a conveyor, said member having a chain and a flexible element secured thereto for forming a high friction driving surface, said element comprising a plurality of individual pads arranged in tandem, each pad being secured to a link of said chain, each pad overlapping a plurality of the links of said chain and shaped to form lines of separation between pads which extend across the surface of said element at a minor angle to the longitudinal axis of said chain whereby each end of each pad laterally of said member overlaps an end of each adjacent pad.
A propelling member as described in claim 1 further characterized in that each pad has an anchor member inter-mediate its ends for securing it to said chain.
A propelling member as described in claim 2 further characterized in that each end of each o-f the pads is radiused away from its driving surface.
A propelling member as described in claim 2 further characterized in that each anchor member projects partially through said chain and has a bifurcated end forming a pair of fingers which resiliently seat around portions of said chain on the side opposite from said driving surface.
A propelling member as described in claim 2 further characterized in that each of said links has a transverse roller sleeve at each end forming an opening therebetween, each of said anchor members extending through one of said openings and having a bifurcated end forming a pair of oppositely extending fingers, said stem being of a resilient material whereby said end can be compressed and passed through one of said openings and capable of reexpanding when the pad is fully seated to partially wrap around said roller sleeves to pull the pad tightly against the chain.
A propelling member for a conveyor, said member having a chain and a flexible element secured thereto and forming a high friction driving surface, said element characterized in that it comprises a plurality of individual pads arranged in tandem, each pad being of oblique parallelo-gram shape and overlying a plurality of links of said chain with the ends of each pad overlapping each other lengthwise of said chain; means at the center of each pad securing it to said chain.
A propelling member for a conveyor as described in claim 6 further characterized in that said each end of each of the links is radiused away from its driving surface.
A flexible pad for attachment to a drive chain for a conveyor, said pad having a main body forming a driving surface of generally oblique parallelogram shape with a central section and opposite ends each tapered lengthwise thereof, said driving surface being generally flat; a mounting stem extending from the opposite face of said central section and geometrically centered with respect to said body for securing said pad to the drive chain; said pad being molded as a single piece from a flexible, wear resistant material having a high coefficient of friction.
A flexible pad as described in claim 8 further characterized in that the end of said stem is bifurcated and has a pair of fingers extending divergently from each other lengthwise of said pad for gripping the chain.
A flexible pad as described in claim 9 further characterized in that the ends of said end sections are radiused away from its driving surface.
A flexible pad as described in either claims 8 or 9 further characterized in that said pad has a pair of later-ally extending openings therein centered between the ends of said pad and adjacent the juncture of said main body and said mounting stem, said openings being blind and forming a longitudinally extending web therebetween for supporting the driving surface of said pad.
A flexible pad as described in claim 2 wherein said anchor member is a mounting stem of a size for insertion through the central aperture in a link of the chain; each pad having a pair of laterally extending openings therein centered between the ends of said pad and adjacent the juncture of said main body and said mounting stem, said openings being blind and forming a longitudinally extending web therebetween for supporting the driving surface of said pad.
A flexible pad as described in claim 12 wherein said openings are trapezoidal in shape.
A propelling member for a conveyor, said member having a chain and a flexible element secured thereto for forming a high friction driving surface, said element comprising a plurality of individual pads arranged in tandem, each pad being secured to a link of said chain, each pad overlapping a plurality of the links of said chain and shaped to form lines of separation between pads which extend across the surface of said element at a minor angle to the longitudinal axis of said chain whereby each end of each pad laterally of said member overlaps lengthwise of the chain and end of each adjacent pad and a substantial por-tion of the links of the chain adjacent to the link to which the pad is attached.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US278,630 | 1981-06-29 | ||
| US06/278,630 US4458809A (en) | 1981-06-29 | 1981-06-29 | Padded chain conveyor drive |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1182065A true CA1182065A (en) | 1985-02-05 |
Family
ID=23065727
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000403281A Expired CA1182065A (en) | 1981-06-29 | 1982-05-19 | Padded chain conveyor drive |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US4458809A (en) |
| EP (1) | EP0068886B1 (en) |
| JP (1) | JPS582102A (en) |
| AU (1) | AU544743B2 (en) |
| BR (1) | BR8203779A (en) |
| CA (1) | CA1182065A (en) |
| DE (1) | DE3270849D1 (en) |
| ES (1) | ES8400972A1 (en) |
| HU (1) | HU183982B (en) |
| MX (1) | MX157441A (en) |
Families Citing this family (32)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4512460A (en) * | 1983-03-30 | 1985-04-23 | Glasstech, Inc. | Glass sheet roller conveyor including antifriction drive chain |
| US4562921A (en) * | 1983-11-03 | 1986-01-07 | Lear Siegler, Inc. | Track for conveyor chain |
| US4588073A (en) * | 1984-09-26 | 1986-05-13 | Alvey Inc. | Padded chain live roller conveyor |
| DE3728843A1 (en) * | 1987-08-28 | 1989-03-09 | Veit Gmbh & Co | HANGING CONVEYOR |
| MX9203847A (en) * | 1991-07-03 | 1993-12-01 | Litton Automation Systems | ZERO PRESSURE ACCUMULATION CONVEYOR. |
| ATE160126T1 (en) * | 1991-07-03 | 1997-11-15 | Hk Systems Inc | ZERO PRESSURE ACCUMULATION CONVEYOR |
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| CA2130782C (en) * | 1993-10-04 | 2005-05-10 | Ricardo N. Schiesser | Modular pneumatic accumulation conveyor |
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| DE29607443U1 (en) * | 1996-04-24 | 1996-10-02 | Wtt Foerdertechnik Gmbh | Roller conveyor |
| US5984082A (en) * | 1997-09-12 | 1999-11-16 | Fenner, Inc. | Roller-bed conveyor drive assembly |
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| US6478142B2 (en) | 1998-12-09 | 2002-11-12 | Rapistan Systems Advertising Corp. | Contact assembly for accumulation conveyors |
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| DE19931365B4 (en) * | 1999-07-07 | 2005-02-03 | Rixen, Wolfgang, Dipl.-Ing. | Transport roller drive |
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| WO2003086908A1 (en) * | 2002-04-12 | 2003-10-23 | Rapistan Systems Advertising Corp. | Tape drive conveyor |
| US6612423B1 (en) * | 2002-07-02 | 2003-09-02 | Alvey Systems, Inc. | Co-extruded driver pad with wear indicator |
| US7241354B2 (en) | 2003-01-31 | 2007-07-10 | Fenner U.S., Inc. | Non-slip conveyor and method for producing same |
| US7449079B2 (en) * | 2003-01-31 | 2008-11-11 | Fenner, U.S., Inc. | Link belt assembly and method for producing same |
| US7004311B2 (en) * | 2003-01-31 | 2006-02-28 | Fenner U.S., Inc. | Non-slip conveyor and method for producing same |
| DE20310084U1 (en) * | 2003-07-02 | 2003-10-02 | Knapp Logistik Automation | Conveying device for conveying conveyed goods, preferably on pallets, with two lateral traction devices, in particular conveyor chains |
| EP1855026A2 (en) * | 2006-05-11 | 2007-11-14 | LuK Lamellen und Kupplungsbau Beteiligungs KG | Flat link chain |
| EP2117970B1 (en) * | 2007-03-06 | 2012-08-01 | Fenner U.S., Inc. | Conveyor with attachments |
| JP2008308266A (en) * | 2007-06-13 | 2008-12-25 | Fujitsu Ltd | Roller conveyor and conveyance control method |
| US7950213B2 (en) * | 2008-07-17 | 2011-05-31 | Fenner U.S., Inc. | Reinforced belt having reduced electrical resistivity and method for producing same |
| US7621114B1 (en) | 2008-07-17 | 2009-11-24 | Fenner U.S., Inc. | Reinforced belt having reduced electrical resistivity and method for producing same |
| US9808904B2 (en) | 2015-12-28 | 2017-11-07 | Dean Foods Company | Chain reconditioning devices and methods |
| EP3199477B1 (en) * | 2016-01-27 | 2019-07-17 | Prince Castle LLC | A slat for a chain conveyor belt and a conveyor belt system comprising the same |
| US10723560B2 (en) * | 2016-11-18 | 2020-07-28 | Prince Castle LLC | Side-by-side snap on slats for a chain conveyor belt and conveyor belt system comprising same |
| US10648534B2 (en) | 2016-12-02 | 2020-05-12 | Fenner U.S., Inc. | Link belt and method for producing same |
| US10899547B1 (en) * | 2019-11-21 | 2021-01-26 | Intelligrated Headquarters, Llc | Coupling block on a conveyor system |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2792928A (en) * | 1955-03-28 | 1957-05-21 | William G Holz | Attachment clip for lumber conveyor chains |
| US3189161A (en) * | 1962-12-21 | 1965-06-15 | Rapids Standard Co Inc | Powered roller curve |
| FR1515395A (en) * | 1967-03-14 | 1968-03-01 | Conveyor with free rollers, carriers, controlled by friction by endless chains | |
| NL177813C (en) * | 1975-12-08 | 1985-12-02 | Rapistan Van Der Lande Bv | TRANSPORTATION DEVICE FOR MOVING OBJECTS. |
-
1981
- 1981-06-29 US US06/278,630 patent/US4458809A/en not_active Expired - Lifetime
-
1982
- 1982-05-19 CA CA000403281A patent/CA1182065A/en not_active Expired
- 1982-05-21 AU AU84056/82A patent/AU544743B2/en not_active Ceased
- 1982-06-09 JP JP57097893A patent/JPS582102A/en active Granted
- 1982-06-17 MX MX193195A patent/MX157441A/en unknown
- 1982-06-28 ES ES513519A patent/ES8400972A1/en not_active Expired
- 1982-06-28 BR BR8203779A patent/BR8203779A/en not_active IP Right Cessation
- 1982-06-29 DE DE8282303403T patent/DE3270849D1/en not_active Expired
- 1982-06-29 HU HU822114A patent/HU183982B/en unknown
- 1982-06-29 EP EP82303403A patent/EP0068886B1/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| US4458809A (en) | 1984-07-10 |
| MX157441A (en) | 1988-11-23 |
| EP0068886A3 (en) | 1983-09-21 |
| DE3270849D1 (en) | 1986-06-05 |
| JPH0211485B2 (en) | 1990-03-14 |
| EP0068886B1 (en) | 1986-04-30 |
| ES513519A0 (en) | 1983-11-16 |
| BR8203779A (en) | 1983-06-21 |
| AU544743B2 (en) | 1985-06-13 |
| EP0068886A2 (en) | 1983-01-05 |
| AU8405682A (en) | 1983-01-06 |
| HU183982B (en) | 1984-06-28 |
| ES8400972A1 (en) | 1983-11-16 |
| JPS582102A (en) | 1983-01-07 |
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