EP0096010B1 - Plant designed particularly for carrying out heat-treatment on crawler track-link - Google Patents
Plant designed particularly for carrying out heat-treatment on crawler track-link Download PDFInfo
- Publication number
- EP0096010B1 EP0096010B1 EP83830091A EP83830091A EP0096010B1 EP 0096010 B1 EP0096010 B1 EP 0096010B1 EP 83830091 A EP83830091 A EP 83830091A EP 83830091 A EP83830091 A EP 83830091A EP 0096010 B1 EP0096010 B1 EP 0096010B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- carrier
- carriers
- hooks
- links
- plant
- 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
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
- C21D1/34—Methods of heating
- C21D1/53—Heating in fluidised beds
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0006—Details, accessories not peculiar to any of the following furnaces
- C21D9/0018—Details, accessories not peculiar to any of the following furnaces for charging, discharging or manipulation of charge
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/0087—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for chains, for chain links
Definitions
- the invention described herein relates to plant designed particularly for carrying out heat-treatment on the links used in crawler tracks.
- the invention sets forth automatic means for carrying into effect a heat-treatment process for track links already disclosed in an application for European Patent EP-A-72 355 and in the U.S. Patent 2,852,422.
- the U.S. Patent 2,852,422 shows an apparatus designed for heat treating metal billets which comprises a loading statin, a balancing furnace, a quenching station, a tempering furnace and an unloading station.
- the object of the invention described herein is that of providing plant capable of carrying out the process aforesaid in endless cycle, the links themselves undergoing treatment through a succession of stages by being carried along a production line by a simple and functional means of conveyance.
- 1 denotes the press in which forging of the links 2 takes place, after which the links themselves are taken on to an infeed station 3 by a conveyor 4.
- the single links are arranged slung up, in fact by an automatic loader 5 onto respective hooks 6 disposed in the appropriate direction for carrying out this said loading operation.
- the single hooks 6 are fitted up to special carriers 7 in given number 8 per carrier, for instance and each hook is able to turn about its own axis.
- Each of the carriers 7 is provided with eight hollow supports 8 spaced apart at like distance one from the next and disposed on rectilinear and vertical axes, within which the cylindrical shanks 9 of the single hooks 6 are accommodated, coaxial therewith, and free to rotate therein.
- the bent portion of the hook itself, denoted 10 extends downward from each respective hollow support 8 aforesaid.
- the carrier 7 which is to all intents and purposes a rectilinear bar, exhibits a cruciform cross- section throughout its rectilinear axial length, with the exception of the two ends 17, which are embodied cylindrically so as to enable both setting down and picking up of the carrier as a whole.
- a loading-unit 13 provided with two prehensile elements 14 and 15, one following the other, is designed to carry through the following sequence of operations:
- a contrivance fitted to loading-unit 13 which comprises a number of orienting devices 18, each designed to work a single hook 6 suspended from the carrier 7 beneath.
- Each orienting device 18 comprises a shaft 20, this disposed with axis vertical and fitted at bottom with an eccentric pin 21 whose function is that of interacting with an angled appendage 22 offered by the uppermost part of each hook 6.
- the shafts of each of the orienting devices 18 are interconnected in reciprocal fashion for the purposes of rotation by way of chains 23 which engage with sprockets 24.
- Full carriers 7 are transferred forward by said conveyor 19 through the entire length of the cooling area 26, wherein the links-hanging from their individual hooks 6 on carrier 7-undergo a first cooling designed to bring about a moderate reduction in temperature to between 600 and 800°C.
- Locking-on of the hooks suspended from a single carrier 7 so as to face in an established direction is brought about by causing slight axial movement of said bar 28 such that it moves up beside the flat face 30 offered by shank 9-provision being made for a certain amount of clearance therebetween-said face 30 disposed parallel with bent portion 10 of the hook itself.
- a lifting apparatus 32 which picks up the single carriers 7 from conveyor 19 and feeds them into the hardening furnace, which is a fluid-bed tunnel-type, denoted 33, and sets them down on a parallel-chain-pair conveyor 36, this extending longitudinally through both furnace 33 and the subsequent tempering furnace 35-likewise a tunnel.
- Carriers 7 are set down on the chains 36 in such a way that only links 2 and the lower end of hooks 6 will be totally submerged in the fluid 37.
- the single carriers 7 are picked up by a first lifting unit 38 comprising two prehensile elements 39 and 40, these positioned such that one follows the other, of which element 39 lays hold on carrier 7 and draws it from the furnace 33, whereupon the entire lifting-unit 38 traverses in such a way as to bring the carrier thus picked up along to the quenching station 41.
- Lifting-unit 38 is lowered once more in such a way that the links-still hanging from the hooks associated with this same carrier picked up and held by prehensile element 39-are lowered into the tank denoted 42, which contains the appropriate quenching liquid.
- an actuator similar in all respects to actuator 31 unlocks hooks 6 by pushing forward on bar 28, and a further device 43 causes the hooks themselves, suspended from carrier 7, to turn about their own vertical axes.
- Device 43 comprises a looped chain 44 disposed parallel with the carrier and designed to pair with the sprockets 45 fitted coaxially one to each hook 6 at the uppermost part of said cylindrical shank 9; the device itself being moved in toward said sprockets 45 by means of hydraulic actuator cylinder 46. Being made thus to revolve while undergoing the quench, the single links are subjected to an even and balanced cooling on all their exposed surfaces.
- lifting-unit 38 recedes one step, and the ends of the carrier are laid hold on by prehensile element 40 and lifted, whilst at the same, prehensile element 39 duly picks up and lifts another carrier exiting from the furnace 33 in similar fashion.
- a further descent causes introduction of the carrier into the tempering furnace 35 and back onto the conveyor chains 36, and at the same moment, quenching of the carrier behind-this held by prehensible element 39-in tank 42.
- furnace 35 is embodied such that only links 2 and the lower end of hooks 6 remain totally submerged in the fluid-bed, whilst hollow supports 8 and carrier 7 ride above the level thereof.
- a lifting-unit 47 identical in all respects to unit 38 and provided with prehensile elements 48 and 49 likewise arranged such that one follows the other, picks up the single carrier from the furnace and brings it into the final cooling station 50.
- a further actuator associated with lifting-unit 47 now releases hooks 6 by moving bar 28 in the appropriate axial direction, whilst a device 51 identical in all respects to device 43 aforementioned imparts rotation to the hooks 6, which duly turn about their own axes together with the links 2 suspended therefrom.
- lifting-unit 47 recedes one step, whereupon carrier 7 is grasped by prehensile element 49 and lifted, and the two move forward to where carrier 7 itself is set down on one of the trolleys 12 aforesaid, after which lifting-unit 47 duly recedes one step and takes up the cycle as before.
- Movement forward of the carriers along the entire length of the production line thus described is brought about in a step-by-step fashion, the tempo of which determining the various work time-lapses relative to loading-unit 13, lifting apparatus 32, and lifting-units 38 and 47.
- the carrier is borne along the return stretch of conveyor-loop 11 aforementioned by trolley 12 as far as a discharge-point 52, where the single links are removed from their hooks automatically, emptying the carrier of its load.
- Guides 53 are located at the discharge-point 52 which branch off from the direction of flow of the conveyor 11 itself, these serving to steer away the links 2 while hollow supports 8 continue on their way, held in the vertical by further guides. Thus one has the necessary removal of links 2 from the respective bent portions 10 of each carrier's hooks 6.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Description
- The invention described herein relates to plant designed particularly for carrying out heat-treatment on the links used in crawler tracks. The invention sets forth automatic means for carrying into effect a heat-treatment process for track links already disclosed in an application for European Patent EP-A-72 355 and in the U.S. Patent 2,852,422.
- The U.S. Patent 2,852,422 shows an apparatus designed for heat treating metal billets which comprises a loading statin, a balancing furnace, a quenching station, a tempering furnace and an unloading station.
- The object of the invention described herein is that of providing plant capable of carrying out the process aforesaid in endless cycle, the links themselves undergoing treatment through a succession of stages by being carried along a production line by a simple and functional means of conveyance.
- This and other objects will be seen to be achieved by the invention, which relates to plant designed particularly for carrying out heat-treatment on crawler track links as defined in
claims 1 to 6. A process in which the links picked up from being forged and still at high temperature undergo a succession of stages in the following sequence: - a) initial cooling to a temperature of between 600 and 800°C for stabilisation purposes;
- b) re-heating to stable hardening temperature;
- c) rapid quenching (interrupted, so-called) to a temperature of between 350 and 550°C;
- d) re-heating to tempering temperature;
- e) cooling to ambient temperature.
- An embodiment of the plant will now be described by way of example, with the aid of the accompanying drawings, in which:
- Fig. 1 is a schematic representation of the plant, seen in plan;
- Figs. 2a and 2b show respective first and second parts of a longitudinal section through the plant's central vertical plane;
- Fig. 3 is the section through II-II in Fig. 2a;
- Fig. 4 shows a part of the section through III-III in Fig. 2a, seen on enlarged scale;
- Fig. 5 shows a view from the right-hand side, of the lower region of Fig. 4;
- Fig. 6 shows a section through IV-IV in Fig. 4, seen on enlarged scale;
- Fig. 7 shows a section through V-V in Fig. 4, which illustrates the same detail as in Fig. 6 in enlarged scale, and in a different working position.
- With reference to the drawings, 1 denotes the press in which forging of the
links 2 takes place, after which the links themselves are taken on to an infeedstation 3 by aconveyor 4. Once at the infeed 3, the single links are arranged slung up, in fact by anautomatic loader 5 ontorespective hooks 6 disposed in the appropriate direction for carrying out this said loading operation. Thesingle hooks 6 are fitted up tospecial carriers 7 in givennumber 8 per carrier, for instance and each hook is able to turn about its own axis. - Each of the
carriers 7 is provided with eighthollow supports 8 spaced apart at like distance one from the next and disposed on rectilinear and vertical axes, within which thecylindrical shanks 9 of thesingle hooks 6 are accommodated, coaxial therewith, and free to rotate therein. The bent portion of the hook itself, denoted 10, extends downward from each respectivehollow support 8 aforesaid. - The
carrier 7, which is to all intents and purposes a rectilinear bar, exhibits a cruciform cross- section throughout its rectilinear axial length, with the exception of the twoends 17, which are embodied cylindrically so as to enable both setting down and picking up of the carrier as a whole. - Empty carriers arrive at the infeed
station 3 by way of aconveyor loop 11 along which they are borne singly byappropriate trolleys 12. - A loading-
unit 13 provided with twoprehensile elements - -pick-up of
single carriers 7 discharged bytrolley 12 by means ofprehensile element 14; - -lifting, carrying forward one step, and setting down of the carrier onto bearer 16;
- -receding by one step of the loading-
unit 13 and orientation in the same direction of allhooks 6 suspended from the carrier already on bearer 16 by dint of its receiving a load of links, whilst afurther trolley 12 arrives at the pick-up station with anotherempty carrier 7; - -lifting of the now loaded carrier by means of
prehensile element 15, carrying forward one step of same, and setting down thereof onto a walking-beam type conveyor 19. - The operation by means of which the
hooks 6 suspended from asingle carrier 7 are caused to face in the same direction is brought about by a contrivance fitted to loading-unit 13 which comprises a number oforienting devices 18, each designed to work asingle hook 6 suspended from thecarrier 7 beneath. Eachorienting device 18 comprises ashaft 20, this disposed with axis vertical and fitted at bottom with aneccentric pin 21 whose function is that of interacting with anangled appendage 22 offered by the uppermost part of eachhook 6. The shafts of each of theorienting devices 18 are interconnected in reciprocal fashion for the purposes of rotation by way ofchains 23 which engage withsprockets 24. - From its initial position A, the single
eccentric pin 21 travels to position B upon rotation of itsshaft 20, and in so doing comes up againstappendage 22 aforesaid offered byhook 6, whereupon the latter is carried along until coming up in its turn against a fixedstop 25. It is envisaged that saidangled appendage 22 lie within a vertical plane disposed at 90° to the vertical plane containing thebent portion 10 aforesaid ofhook 6. -
Full carriers 7 are transferred forward by saidconveyor 19 through the entire length of the cooling area 26, wherein the links-hanging from theirindividual hooks 6 on carrier 7-undergo a first cooling designed to bring about a moderate reduction in temperature to between 600 and 800°C. - Provision is made for
overhead guides 27 which, by coming into contact withappendages 22, maintain the hooks such that theirbent portions 10 lie within the same plane as that which contains the axis of the carrier itself from where they hang. - On exiting from the
conveyor 19, all thehooks 6 of thesingle carrier 7 are locked into position by means of abar 28 worked by an actuator. The locking movement comes about by simple axial traverse of saidbar 28, which is prismatic, and paired up to lie parallel with thesingle carrier 7. The bar exhibits a number ofnotches 29 set apart at like distance to that existing between hooks and hollow supports offered by thecarrier 7; the depth of saidnotches 29 being calculated such as to avoid any contact with the singleadjacent hook shanks 9 offered thereto when thebar 28 itself assumes a given axial position. - Locking-on of the hooks suspended from a
single carrier 7 so as to face in an established direction is brought about by causing slight axial movement of saidbar 28 such that it moves up beside theflat face 30 offered by shank 9-provision being made for a certain amount of clearance therebetween-saidface 30 disposed parallel withbent portion 10 of the hook itself. - The axial movement of
bar 28 aforementioned is brought about by an ordinarylinear actuator 54 at the point of exit fromconveyor 19. Remembering that the bar is associated withcarrier 7, the same operation will be brought about at the exit offurnace 33, where afurther actuator 31 again movesbar 28 into the position described. - Provision is made for a
lifting apparatus 32 which picks up thesingle carriers 7 fromconveyor 19 and feeds them into the hardening furnace, which is a fluid-bed tunnel-type, denoted 33, and sets them down on a parallel-chain-pair conveyor 36, this extending longitudinally through bothfurnace 33 and the subsequent tempering furnace 35-likewise a tunnel.Carriers 7 are set down on thechains 36 in such a way that only links 2 and the lower end ofhooks 6 will be totally submerged in thefluid 37. At the exit offurnace 33, wherein the appropriate envisaged hardening temperature will have been both reached and stabilised, thesingle carriers 7 are picked up by afirst lifting unit 38 comprising twoprehensile elements element 39 lays hold oncarrier 7 and draws it from thefurnace 33, whereupon the entire lifting-unit 38 traverses in such a way as to bring the carrier thus picked up along to thequenching station 41. Lifting-unit 38 is lowered once more in such a way that the links-still hanging from the hooks associated with this same carrier picked up and held by prehensile element 39-are lowered into the tank denoted 42, which contains the appropriate quenching liquid. - Before actually descending into said
tank 42, an actuator similar in all respects toactuator 31unlocks hooks 6 by pushing forward onbar 28, and afurther device 43 causes the hooks themselves, suspended fromcarrier 7, to turn about their own vertical axes.Device 43 comprises a loopedchain 44 disposed parallel with the carrier and designed to pair with thesprockets 45 fitted coaxially one to eachhook 6 at the uppermost part of saidcylindrical shank 9; the device itself being moved in toward saidsprockets 45 by means ofhydraulic actuator cylinder 46. Being made thus to revolve while undergoing the quench, the single links are subjected to an even and balanced cooling on all their exposed surfaces. - With the hardening stage completed, lifting-
unit 38 recedes one step, and the ends of the carrier are laid hold on byprehensile element 40 and lifted, whilst at the same,prehensile element 39 duly picks up and lifts another carrier exiting from thefurnace 33 in similar fashion. - A further traverse forward by lifting-
unit 38 as a whole, and thesingle carrier 7 is brought up to the tempering furnace entry. A further descent causes introduction of the carrier into thetempering furnace 35 and back onto theconveyor chains 36, and at the same moment, quenching of the carrier behind-this held by prehensible element 39-intank 42. - Once again, entry of
carrier 7 into thefurnace 35 is preceded by locking-on of thehooks 6 by movement forward ofbar 28 along its own axis. With the carrier set down thus onchains 36 and the interrupted-quench cycle complete, the entire lifting-unit 38 rises clear ofquenching station 41, recedes one step, and picks up the cycle as before. - Again,
furnace 35 is embodied such that onlylinks 2 and the lower end ofhooks 6 remain totally submerged in the fluid-bed, whilst hollow supports 8 andcarrier 7 ride above the level thereof. - At the exit of tempering
furnace 35, a lifting-unit 47 identical in all respects tounit 38 and provided withprehensile elements final cooling station 50. A further actuator associated with lifting-unit 47 now releaseshooks 6 by movingbar 28 in the appropriate axial direction, whilst adevice 51 identical in all respects todevice 43 aforementioned imparts rotation to thehooks 6, which duly turn about their own axes together with thelinks 2 suspended therefrom. - In
thisfinal cooling station 50, the revolving links are quenched with jets of liquid such as will bring them down to ambient temperature. This completed, lifting-unit 47 recedes one step, whereuponcarrier 7 is grasped byprehensile element 49 and lifted, and the two move forward to wherecarrier 7 itself is set down on one of thetrolleys 12 aforesaid, after which lifting-unit 47 duly recedes one step and takes up the cycle as before. - Movement forward of the carriers along the entire length of the production line thus described is brought about in a step-by-step fashion, the tempo of which determining the various work time-lapses relative to loading-
unit 13,lifting apparatus 32, and lifting-units - Once arrived at the final exit with its load of hardened and tempered links, the carrier is borne along the return stretch of conveyor-
loop 11 aforementioned bytrolley 12 as far as a discharge-point 52, where the single links are removed from their hooks automatically, emptying the carrier of its load.Guides 53 are located at the discharge-point 52 which branch off from the direction of flow of theconveyor 11 itself, these serving to steer away thelinks 2 whilehollow supports 8 continue on their way, held in the vertical by further guides. Thus one has the necessary removal oflinks 2 from the respectivebent portions 10 of each carrier'shooks 6. - Following the sequence through beyond discharge-
point 52, the single carrier 7-now relieved of its load of links-continues along towardinfeed station 3 where it will be picked up once more by loading-unit 13. Thetrolley 12, on the other hand, passes on down the forward stretch ofloop 11 so as to arrive back at lifting-unit 47. - The adoption of spray-quenching with the
links 2 revolving about their own axes, and of the special fluid-bed heating technique, makes it possible to achieve a degree of surface-conditioning for the links themselves which will render further cleansing operations quite unnecessary.
Claims (6)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT40053/82A IT1157840B (en) | 1982-05-28 | 1982-05-28 | PLANT IN PARTICULAR FOR THE HEAT TREATMENT OF TRACKS |
IT4005382 | 1982-05-28 |
Publications (3)
Publication Number | Publication Date |
---|---|
EP0096010A2 EP0096010A2 (en) | 1983-12-07 |
EP0096010A3 EP0096010A3 (en) | 1985-01-09 |
EP0096010B1 true EP0096010B1 (en) | 1988-08-17 |
Family
ID=11247257
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP83830091A Expired EP0096010B1 (en) | 1982-05-28 | 1983-05-04 | Plant designed particularly for carrying out heat-treatment on crawler track-link |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP0096010B1 (en) |
BR (1) | BR8302380A (en) |
DE (1) | DE3377720D1 (en) |
IT (1) | IT1157840B (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6042369A (en) * | 1998-03-26 | 2000-03-28 | Technomics, Inc. | Fluidized-bed heat-treatment process and apparatus for use in a manufacturing line |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR894014A (en) * | 1942-04-13 | 1944-12-12 | Eisenwerke A G Deutsche | Method and installation for the heat treatment of elements of crawler chains or the like |
US2852422A (en) * | 1953-07-08 | 1958-09-16 | Selas Corp Of America | Method of heat treating metal objects |
US3410594A (en) * | 1967-03-28 | 1968-11-12 | Kolene Corp | Workpiece loading fixture |
GB1499452A (en) * | 1975-02-22 | 1978-02-01 | Lubuskie Zaklady Termotech Elt | Method for the heat treatment of cast iron and an equipment for the application of this method |
IT1171403B (en) * | 1981-07-21 | 1987-06-10 | Italtractor | PROCEDURE FOR THE DIRECT HEAT TREATMENT OF LINES FOR TRACTOR CATALOGS OR TRACKED VEHICLES |
-
1982
- 1982-05-28 IT IT40053/82A patent/IT1157840B/en active
-
1983
- 1983-05-04 DE DE8383830091T patent/DE3377720D1/en not_active Expired
- 1983-05-04 EP EP83830091A patent/EP0096010B1/en not_active Expired
- 1983-05-05 BR BR8302380A patent/BR8302380A/en unknown
Also Published As
Publication number | Publication date |
---|---|
IT8240053A1 (en) | 1983-11-28 |
BR8302380A (en) | 1984-01-10 |
IT1157840B (en) | 1987-02-18 |
EP0096010A2 (en) | 1983-12-07 |
IT8240053A0 (en) | 1982-05-28 |
DE3377720D1 (en) | 1988-09-22 |
EP0096010A3 (en) | 1985-01-09 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
EP0562156B1 (en) | Means for the transit of small objects within treatment chambers | |
US3403794A (en) | Apparatus for stacking and unstacking articles | |
US5339606A (en) | Method for accepting continuously supplied products from a production facility and respectively discontinuous delivery of a number of these products at a delivery station | |
US20060070847A1 (en) | Apparatus for charging and removing load carriers or piece goods | |
US3184042A (en) | Article handling apparatus | |
US20040142650A1 (en) | Handling system for sausages | |
EP0614654B1 (en) | Apparatus for coating a tablet | |
US3512628A (en) | Walking beam conveyor and method | |
EP0621217A2 (en) | Chain conveyor with frictionally driven recirculated pallets linked together in sub groupings | |
JPH03106709A (en) | Conveyor for storage | |
EP0096010B1 (en) | Plant designed particularly for carrying out heat-treatment on crawler track-link | |
US3229826A (en) | Conveyors | |
US7686564B2 (en) | Palletizing device | |
US5454466A (en) | Accumulating conveyor | |
JPH0696406B2 (en) | Method and apparatus for temporarily removing one product from a series of products being transported | |
US4094425A (en) | Device and a method for handling material | |
JP2004211180A (en) | Method of heat-treatment for aluminum foil and its apparatus | |
CA1254240A (en) | Method and apparatus for conveying articles | |
US2951491A (en) | Apparatus for feeding elongated articles through a bath type furnace | |
US2826292A (en) | Transfer mechanism | |
US5054600A (en) | Transferring system for transferring articles through a processing apparatus | |
GB2125354A (en) | Apparatus for handling rod-like or elongate package articles | |
JPH0613370B2 (en) | Work transfer method | |
US2802559A (en) | Conveying mechanism | |
SU727712A1 (en) | Conveyer for moving processed articles through baths |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): DE FR GB |
|
PUAL | Search report despatched |
Free format text: ORIGINAL CODE: 0009013 |
|
AK | Designated contracting states |
Designated state(s): DE FR GB |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ITALTRACTOR MECCANICA ITM S.P.A. |
|
17P | Request for examination filed |
Effective date: 19850611 |
|
R17P | Request for examination filed (corrected) |
Effective date: 19850611 |
|
17Q | First examination report despatched |
Effective date: 19860722 |
|
RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: ITALTRACTOR ITM S.P.A. |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): DE FR GB |
|
REF | Corresponds to: |
Ref document number: 3377720 Country of ref document: DE Date of ref document: 19880922 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19900501 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: FR Payment date: 19900525 Year of fee payment: 8 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19900531 Year of fee payment: 8 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19910504 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee | ||
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19920131 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19920303 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |