GB1586049A - Creation of Inventions and Patents with Artificial Intelligence

GB1586049A – Conveyor chain
– Google Patents

GB1586049A – Conveyor chain
– Google Patents
Conveyor chain

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Info

Publication number
GB1586049A

GB1586049A
GB12666/78A
GB1266678A
GB1586049A
GB 1586049 A
GB1586049 A
GB 1586049A
GB 12666/78 A
GB12666/78 A
GB 12666/78A
GB 1266678 A
GB1266678 A
GB 1266678A
GB 1586049 A
GB1586049 A
GB 1586049A
Authority
GB
United Kingdom
Prior art keywords
chain
bushing
pin
conveyor chain
conveyor
Prior art date
1977-04-06
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

Application number
GB12666/78A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)

Rexnord Inc

Original Assignee
Rexnord Inc
Priority date (The priority date 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 date listed.)
1977-04-06
Filing date
1978-03-31
Publication date
1981-03-18

1978-03-31
Application filed by Rexnord Inc
filed
Critical
Rexnord Inc

1981-03-18
Publication of GB1586049A
publication
Critical
patent/GB1586049A/en

Status
Expired
legal-status
Critical
Current

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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

B65G17/00—Conveyors having an endless traction element, e.g. a chain, transmitting movement to a continuous or substantially-continuous load-carrying surface or to a series of individual load-carriers; Endless-chain conveyors in which the chains form the load-carrying surface

B65G17/30—Details; Auxiliary devices

B65G17/38—Chains or like traction elements; Connections between traction elements and load-carriers

B65G17/42—Attaching load carriers to traction elements

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

B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled

B65G2201/02—Articles

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

B65G2201/00—Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled

B65G2201/02—Articles

B65G2201/0235—Containers

B65G2201/0244—Bottles

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

B65G2207/00—Indexing codes relating to constructional details, configuration and additional features of a handling device, e.g. Conveyors

B65G2207/38—Pin used as carrier of one article

Description

PATENT SPECIFICATION
0 PE ( 21) Application No 12666/78 C ( 31) Convention Application No 785260 ( 33) United States of America (US) ok ( 44) Complete Specification Published 18 Mai t ( 51) INT CL 3 B 65 G 17/42 -I ( 52) Index at Acceptance B 8 A LA R 2 ( 54) CONVE.
( 71) We, REXNORD INC, a Corporation organised and existing under the laws of the State of Wisconsin, United States of America of 4701 West Greenfield Avenue, Milwaukee,
Wisconsin, 53214, United States of America, do hereby declare the invention, for which we pray that a patent may be granted to us and the method by which it is to be performed, to be particularly described in and by the following statement:-
This invention relates to conveyor chains, and in particular to relatively long single strand roller chain conveyors which utilise long extended chain connecting pins on which articles being conveyed are carried or attached.
Such conveyors are well known in the art and are used, for example, in the coating of beverage cans, in which can they are used to convey the cans through painting and/or coating equipment and into and through a baking or curing oven wherein the drying of painted or lacquered surfaces of the cans is speeded The chains of these conveyors are generally disposed in a vertically oriented serpentine path with the extended chain pins horizontally disposed.
The cans, or other articles being conveyed, are simple placed open-end-first horizontally onto the extended pins and carried along the serpentine course through the coaters and the oven or drying area The chain used in such conveyors is generally a standard roller chain, with a No 60 roller chain having a 3/4 inch chain pitch (distance between link connecting pins) being typical.
To provide the can conveying attachments on these roller chains, selected standard link connecting pins are replaced with long extended chain pins These extended chain pins thus function both to interconnect the chain links and to carry the cans In a conveyor designed to carry standard size beverage cans, the spacing of the extended length chain connecting pins may be every six or seven chain pitches or, in a typical No 60 roller chain, every 4 to 5 % inches A typical coating and drying operation will require a conveyor length of from 500 to 800 feet and, thus, from approximately 1000 to over 2000 extended pins for conveying cans The extended pins, which typically extend about 7 inches outwardly of the chain, must be strong and quite rigid in order to ( 11) 1 586 049 ( 22) Filed 31 Mar 1978 ( 32) Filed 6 Apr 1977 ( 19) A 1981 513 O CHAIN avoid vibration or deflection of the pins which would tend to dislodge the cans Since a No 60 roller chain has link connecting pins of approximately hi inch diameter, the extended length 55 pins (which must also serve as connecting pins) are conveniently of the same diameter and provide the required strength and rigidty.
Over the course of a coating and drying conveyor, and particularly in the serpentine 60 drying portion which comprises the greater portion of the total conveyor length, there are numerous tracking, guiding and supporting structures with relatively small clearances for the moving conveyor chain and attached 65 cans Frequent slight displacement of the cans on the extended chain pins occur, and snagging or jamming of the pins and/or cans on the various structures is commonplace and unavoidable As a result, pin breakage or 70 severe bending frequently occurs and, although a small number of broken pins may be tolerated with little inconvenience, broken pins must eventually be replaced and bent pins may so interfere with conveyor operation that 75 immediate replacement is required In either case, the conveyor must be stopped and the entire chain disconnected, often in many places This is both costly and extremely time consuming 80 In one prior art attempt to solve this problem, the extended chain pins are notched or grooved at a point outward of the chain links The notch or groove provides a weakened area in the pin allowing the extended pin 85 to break away if an obstruction is encountered.
This controlled break-away has helped to solve the problem of bent pins, but has done nothing to resolve the more serious problem of costly connecting pin replacement 90 Moreover, it is sometimes necessary to use special materials for the extended chain pins, either for compatibility with the articles being conveyed or because of the environment in which the chain operates For exampleg 95 stainless steel pins are often required for carrying cans through the coating and drying operations However, stainless steel is a poor substitute for plain carburised steel normally used for roller chain connecting pins and the 100 wear life of the chain is adversely affected if stainless steel extended chain pins are used.
1 586 049 Also, in some applications where cans are automatically inserted onto every extended pin of the conveyor chain, if such a pin were broken off (and hence missing), the can would still be inserted and would fall down and often result in jams and product loss.
The present invention provides a conveyor chain having chain link connecting pins extending a short distance outwardly of the chain, coupling means for at least some of the connecting pins removably attached to the extended portions thereof, and conveying pins attached to the coupling means and extending outwardly thereof coaxially with the connecting pins, wherein each of the coupling means comprises a hollow cylindrical bushing adapted to receive the adjacent ends of the extended portion of the respective connecting pin and of the respective conveying pin and to hold the same therein with an interference fit, and wherein each bushing is split longitudinally along its full length.
Advantageously, each of the conveying pins is removably attached to its coupling means.
Preferably, the longitudinal split of each bushing is disposed in a plane perpendicular to the pitch line of the conveyor chain.
Advantageously, the length of each bushing is at least twice the length of the extended portion of the respective connecting pin In this case, the connecting pin and the conveying pin within each bushing are preferably disposed in end-to-end engagement.
The invention also provides a conveyor attachment assembly for incorporation in a conveyor chain as defined above, the assembly comprising an extended portion of one of the chain link connecting pins of the conveyor chain, a hollow cylindrical bushing removably attached to the extended portion, and a conveying pin attached to the bushing and extending outwardly thereof coaxially with the extended portion.
One form of conveyor chain constructed in accordance with the invention will now be described, by way of example, with reference to the accompanying drawings, in which:Figure 1 is a plan view of a portion of the conveyor chain; Figure 2 is a side elevation of the chain shown in Figure 1; and Figure 3 is a perspective view of a portion of the chain shown in Figures 1 and 2.
Referring to the drawings, a conveyor chain 10 comprises a standard base roller chain made of alternate interconnected bushing links 12 and pin links 14 Each bushing link 12 includes two inner link plates 16 rigidly interconnected by a pair of link bushings 18 pressed into holes in the opposite ends of each inner link plate 16.
Each pin link 14 includes two outer link plates rigidly interconnected by a pair of link connecting pins 22 each of which also extends through a respective link bushing 18 to provide an assembly of alternate interconnected chain links The addition of rollers 24 over the inner link bushings 18 completes what to this point in the description is a standard roller chain.
In this conveyor chain, however, the link 70 connecting pins 22 are extended a short distance outwardly from the outer link plates 20, the extended portions 26 forming part of conveyor attachment assemblies Preferably, all of the link connecting pins 22 are of extended 75 length so that the remaining parts of the conveyor attachment assemblies, to be described hereinafter, may be attached to the base chain at any desired spacing The extended portion 26 of each link connecting pin 22 may be of 80 any conveninet length However, for No 60 roller chain having a normal link connecting pin length of one inch, it has been found that an extended portion 26 of from 3/8 to 9/16 of an inch is satisfactory 85 The remaining parts of each conveyor attachment assembly includes a hollow coupling bushing 28 pressed onto the extended portion 26 of the respective link connecting pin 22, and a long conveying pin 30 pressed 90 into the opposite end of that coupling bushing.
The coupling bushing 28 may be of various sizes and shapes, and may be made of metal or plastics material Each coupling bushing 28 must be of sufficient length to extend sufficien 95 tly beyond the end of the respective connecting pin extended portion 26 to allow the corresponding conveying pin 30 to be inserted and held therein Moreover, since for ease and uniformity of assembly the coupling bushings 100 28 should be pressed fully onto the extended portions 26 and against the outer link plates 20, the coupling bushings should be substantially longer than the extended portions of the link connecting pins 105 Each of the couplings bushings 28 is designed to be the weakest portion of the corresponding conveyor attachment assembly Thus, when a conveying pin 30, or an article being conveyed thereon, encounters an obstruction in its path, 110 the corresponding coupling bushing 28 will separate or break, thereby avoiding damage to either the conveying pin or the respective link connecting pin 22 In the illustrated embodi ment, each of the coupling bushings 28 is a 115 hollow cylinder of uniform thickness with a through cylindrical bore just slightly smaller than the diameter of the respective extended portion 26 so that, when the bushing is pressed onto this extended portion it will be held 120 thereon by the frictional force of a light interference fit It has been found, however, that a solid wall coupling bushing requires extremely close tolerances be maintained in the bore so that the fit on both the extended portions 26 125 of a pin 22 and the conveying pin 30 can be controlled This problem has been solved in the illustrated embodiment by forming each of the bushings 28 with a longitudinal slot 32 along its entire length The bushings 28 constructed 130 1 586049 in this manner have substantially more flexibility than solid wall bushings and variations in the bushing inner diameter or pin outer diameter are readily compensated for, so that each entire conveyor attachment assembly is held with a substantially uniform spring fit regardless of any slight variations in the diameters of the assembled parts.
Moreover, the use of a longitudinally split coupling bushing 28 also provides better control of the breakaway of the corresponding conveying pin 30 from the extended portion 26 of its connecting pin 22 when an obstruction is encountered in the conveyor path Thus, in a conveyor chain 10 operating in the direction of arrow 24 (see Figure 1), an obstruction encountered by a given conveying pin 30 (or an article being carried thereon) will result in a force indicated by the arrow F being imposed on that conveying pin, this force being transmitted through the corresponding coupling bushing 28 to its connecting pin extended portion 26 The split bushing 28 is constructed to open under the force F before either the conveying pin 30 or the link connecting pin 22 bends or breaks The length of the coupling bushing 28 is preferably greater than twice the length of the extended portion 26 of the connecting pin 22, so that the length of the conveying pin 30 within the bore of the bushing is greater than the total length of the extended portion within that bushing bore.
In this manner, the portion of the bushing 24 surrounding the connecting pin extended portion 26 will tend to open and separate first, under a load imposed on the conveying pin As a result, both the bushing 28 and the conveying pin 30 will break away together, making their replacement simpler and more rapid because the damaged coupling bushing will not have to be removed separately.
In actual testing of the conveyor attachment assembly described above, it has been discovered that the force imposed on a conveying pin 30 which is necessary to open and cause separation of the corresponding bushing 28 from its extended pin portion 26, varies with the position of the longitudinal slot 32 This force has been found to vary from a minimum when the bushing 28 is mounted in a prefered position with the slot 32 lying in a plane perpendicular to the pitch line P of the chain (as shown in the drawings), to a maximum when the bushing is rotated through 90 degrees and the longitudinal slot lies coplanar with the pitch line P It is believed that this difference in coupling strengths is due to the fact that, in the preferred position, there is one one load bearing moment arm to resist the bending force transmitted to the bushing wall, whereas in the position of maximum strength, there are two such load bearing moment arms, one in each direction at right-angles to the slot 32.
In the conveyor attachment assembly described above, each coupling bushing 28 is pressed fully onto the extended portion 26 of the respective link connecting pin 22 and against the respective outer link plate 20, and the corresponding conveying pin 30 is inserted into the opposite end of the bushing and into 70 engagement with the end of that extended portion 26 Thus, preferred lengths of bushing and respective pin engagements are maintained and, by “bottoming” the conveying pins 30 on the extended portions 26, the overall lengths 75 of the conveyor attachment assemblies may be maintained equal.

Claims (8)

WHAT WE CLAIM IS:-

1 A conveyor chain having chain link connecting pins extending a short distance out 80 wardly of the chain, coupling means for at least some of the connecting pins removably attached to the extended portions thereof, and conveying pins attached to the coupling means and extending outwardly thereof coaxially 85 with the connecting pins, wherein each of the coupling means comprises a hollow cylindrical bushing adapted to receive the adjacent ends of the extended portion of the respective connecting pin and of the respective conveying 90 pin and to hold the same therein with an interference fit, and wherein each bushing is split longitudinally along its full length.

2 A conveyor chain as claimed in Claim 1, wherein each of the conveying pins is remov 95 ably attached to its coupling means.

3 A conveyor chain as claimed in Claim 1 or Claim 2, wherein the longitudinal split of each bushing is disposed in a plane perpendicular to the pitch line of the conveyor chain 100

4 A conveyor chain as claimed in any one of Claims 1 to 3, wherein the length of each bushing is at least twice the length of the extended portion of the respective connecting pin.

A conveyor chain as claimed in any one 105 of Claims 1 to 4, wherein the connecting pin and the conveying pin within each bushing are disposed in end-to-end engagement.

6 A conveyor chain substantially as hereinbefore described with reference to, and as 110 illustrated by, the accompanying drawings.

7 A conveyor attachment assembly for incorporation in a conveyor chain as claimed in any one of Claims 1 to 6, the assembly comprising an extended portion of one of the chain 115 link connecting pins of the conveyor chain, a hollow cylindrical bushing removably attached to the extended portion, and a conveying pin attached to the bushing and extending outwardly thereof coaxially with the extended 120 portion.

8 A conveyor attachment assembly substantially as hereinbefore described with reference to, and as illustrated by, the accompanying drawings 125 BROOKES & MARTIN Chartered Patent Agents High Holborn House 52-54 High Holborn London WC 1 V 6 SE 130 Printed for Her Majesty’s Stationery Office by MULTIPLEX techniques ltd, St Mary Cray, Kent 1981 Published at the Patent Office, 25 Southampton Buildings, London WC 2 l AY, from which copies may be obtained.

GB12666/78A
1977-04-06
1978-03-31
Conveyor chain

Expired

GB1586049A
(en)

Applications Claiming Priority (1)

Application Number
Priority Date
Filing Date
Title

US05/785,260

US4388990A
(en)

1977-04-06
1977-04-06
Article carrying attachment for conveyor chain

Publications (1)

Publication Number
Publication Date

GB1586049A
true

GB1586049A
(en)

1981-03-18

Family
ID=25134916
Family Applications (1)

Application Number
Title
Priority Date
Filing Date

GB12666/78A
Expired

GB1586049A
(en)

1977-04-06
1978-03-31
Conveyor chain

Country Status (5)

Country
Link

US
(1)

US4388990A
(en)

BR
(1)

BR7802116A
(en)

CA
(1)

CA1093004A
(en)

DE
(1)

DE2814956A1
(en)

GB
(1)

GB1586049A
(en)

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Assignee
Title

EP0104366A1
(en)

1982-08-31
1984-04-04
FOCKE & CO.
Continuous conveyor, especially a carrying-chain conveyor

EP0644133A1
(en)

1993-09-21
1995-03-22
JOH. WINKLHOFER & SÖHNE GmbH & Co KG
Conveyor link chain and conveying device

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1983-09-09
1985-08-06
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Deflectable pin assembly

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1984-08-13
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Timmer George R
Endless, agricultural, belted-chain conveyor with provision for attaching crop-protecting, sprocket-run covers

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1987-07-16
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Tubular carrier pin

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1987-12-24
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Kolb Gmbh & Co Hans

Transport chain for textile processing machines

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1989-05-10
1990-06-05
Amsted Industries, Incorporated
Article carrying member for conveyor chain

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1989-05-10
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Amsted Industries Incorporated
Conveyor chain having detachable member for carrying articles

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Agri-Tech Incorporated
Safety device for conveyor systems

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1991-10-08
1993-04-27
大同工業株式会社

Chain for transporting cans

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1992-09-18
1992-10-28
Priorlucky Ltd
Conveyor systems

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1992-12-24
1994-05-05
Duerkopp Adler Ag
Drive for hanger-conveyor trucks – has groove in dog extending into bore accommodating pivot bolt

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1993-11-10
1994-01-27
Winklhofer & Soehne Gmbh

Hollow pin link chain

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1993-12-15
1995-07-04
Rexnord Corporation
Conveyor chain for carrying objects

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1995-07-07
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Smi Sistemi Macchine Impianti

CONVEYOR DEVICE PARTICULARLY DESIGNED FOR PLANTS PACKAGING WITH FILM OF HEAT-SHRINKABLE MATERIALS

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1996-03-07
1997-09-18
Rieter Ingolstadt Spinnerei

Spinning machine with a sleeve magazine

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Riverwood International Corporation
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Polytype America Corporation
Tube loading system

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Conveyer chain has transverse bushes with overhanging through-bolts with plastic end-bushes for load-bearing bracket

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Joy M M Delaware, Inc
Chain and flight conveyor

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Artemis Kautschuk- Und Kunststoff-Technik Gmbh
Rod conveyor for harvesting potatoes has metal sleeves with flattened ends which are riveted to belt, rods fitting into =sleeves and also having flat ends which fit into riveted sections

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2003-08-28
2010-05-18
Seagate Technology Llc
Arrangement for processing disks of different sizes

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(en)

2004-04-05
2006-12-21
Schmezer Alexander

Pressure-resistant drive chain for an adjusting device

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(en)

2004-08-18
2006-03-02
Daido Kogyo Co Ltd
Resin pin chip for pin chain, and method of manufacturing the same

US20060118388A1
(en)

2004-12-06
2006-06-08
Graham Packaging Company, L.P.
Arrangement for changing the spacing on a conveying chain

DE102005047933B4
(en)

2005-10-06
2017-10-12
Premark Feg L.L.C.

Conveyor belt roller for belt conveyors, a conveyor belt and a belt conveyor dishwasher

JP4873704B2
(en)

2006-08-18
2012-02-08
大同工業株式会社

Pin tip mounting structure for canning chain

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2007-11-01
2012-08-07
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Thermal capsulotomy tool and system

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2010-05-20
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Krones Ag

Impact device with a rod-shaped impact element

DE102011056783A1
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2011-12-21
2013-06-27
Rud Ketten Rieger & Dietz Gmbh U. Co. Kg

Driver for link chains of at least two sub-bodies and method for its preparation

US20130190121A1
(en)

2012-01-05
2013-07-25
The Timken Company
Roller chain welded extended pin

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国立研究開発法人農業・食品産業技術総合研究機構

Agricultural machine

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Transport chain, hollow body transport device and manufacturing plant

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DEVICE FOR TRANSPORTING HOLLOW BODIES THROUGH A TREATMENT FACILITY

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DEVICE FOR TRANSPORTING HOLLOW BODIES THROUGH A TREATMENT FACILITY

1977

1977-04-06
US
US05/785,260
patent/US4388990A/en
not_active
Expired – Lifetime

1978

1978-03-31
GB
GB12666/78A
patent/GB1586049A/en
not_active
Expired

1978-04-05
BR
BR7802116A
patent/BR7802116A/en
unknown

1978-04-06
CA
CA300,571A
patent/CA1093004A/en
not_active
Expired

1978-04-06
DE
DE19782814956
patent/DE2814956A1/en
not_active
Withdrawn

Cited By (3)

* Cited by examiner, † Cited by third party

Publication number
Priority date
Publication date
Assignee
Title

EP0104366A1
(en)

1982-08-31
1984-04-04
FOCKE & CO.
Continuous conveyor, especially a carrying-chain conveyor

US4836357A
(en)

1982-08-31
1989-06-06
Focke & Co.
Continuous conveyor, especially a carrying chain conveyor

EP0644133A1
(en)

1993-09-21
1995-03-22
JOH. WINKLHOFER & SÖHNE GmbH & Co KG
Conveyor link chain and conveying device

Also Published As

Publication number
Publication date

US4388990A
(en)

1983-06-21

BR7802116A
(en)

1978-11-21

CA1093004A
(en)

1981-01-06

DE2814956A1
(en)

1978-10-12

Contact information