EP0416305B1 - Verschleissfester Traktorriemen - Google Patents

Verschleissfester Traktorriemen Download PDF

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Publication number
EP0416305B1
EP0416305B1 EP19900115228 EP90115228A EP0416305B1 EP 0416305 B1 EP0416305 B1 EP 0416305B1 EP 19900115228 EP19900115228 EP 19900115228 EP 90115228 A EP90115228 A EP 90115228A EP 0416305 B1 EP0416305 B1 EP 0416305B1
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EP
European Patent Office
Prior art keywords
belt assembly
accordance
pin
feed
feed belt
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 - Lifetime
Application number
EP19900115228
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English (en)
French (fr)
Other versions
EP0416305A3 (en
EP0416305A2 (de
Inventor
Joseph Leo Dessel
Jeffrey Vincent Gatto
David Brian Howe
Daniel Joseph Hunt
David Brian Schaefer
Joseph Townsend Wilson Iii
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International Business Machines Corp
Original Assignee
International Business Machines Corp
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.)
Filing date
Publication date
Application filed by International Business Machines Corp filed Critical International Business Machines Corp
Publication of EP0416305A2 publication Critical patent/EP0416305A2/de
Publication of EP0416305A3 publication Critical patent/EP0416305A3/en
Application granted granted Critical
Publication of EP0416305B1 publication Critical patent/EP0416305B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/26—Pin feeds
    • B41J11/30—Pin traction elements other than wheels, e.g. pins on endless bands

Definitions

  • This invention relates to feed mechanisms and particularly to a feed belt for tractor feed mechanisms of the type used in high speed printers.
  • Paper feed tractors for printer and other devices use an endless feed belt commonly called a pin feed belt.
  • Such belts have a structure which comprises a flexible web with uniformly spaced drive elements.
  • the drive elements comprise feed pins on the outside of the belt which enter feed holes in a paper forms document and gear teeth or lugs on the inside of the belt which are engaged by openings such as grooves in one or more sprockets or pulleys which are rotated by a suitable drive mechanism.
  • One method of manufacturing a low cost forms feed tractor is to mold a thermoplastic through perforations in a thin tension member to form paper feed pins and belt drive teeth on opposite sides of the tension member. This technique is described in US Patent 3,825,162 and copending application Serial No. 153,394, filed February 2, 1988. It is also known to produce feed belts in which the entire belt is molded of thermoplastic materials which may include embedded reinforcement strands such as wire. This technique is described in US Patents 3,113,823 and 4,079,633.
  • thermoplastic pins can withstand the paper abrasion, but in higher speed printers, excessive wear of the pins occurs which can cause problems in registration of the paper at the print line and in stripping the paper from the pins.
  • the region of wear is part way up the side of the base portion of the pin which can be conical as described in the copending application mentioned above.
  • the wear can produce undercutting of the pin surface which can cause tearing of the paper when it is being stripped from the pin and can even result in pin fractures under certain conditions of high acceleration loading and impacting of the pins by the paper.
  • Metal and metal coated plastic pins were also mechanically attached in belts used in tractors for the IBM 1403, 3203, 4245 and 4248 Printers.
  • the metal pin In the 1403 Printer, the metal pin is molded to tabs or brackets which are individually assembled and attached to a molded timing belt.
  • the metal pins In the 3203 and 4245 Printers, the metal pins are pushed through holes formed in a molded timing belt.
  • the pin elements In the 4248 Printer, the pin elements are plastic plated with a metal coating such as chrome and or nickel and which are individually pressed through holes in a molded timing belt.
  • the invention corrects the above problems by providing a feed belt in which the feed pins are made at least in part of abrasion resistant material and are locked to the tension member portion of feed belt by molded thermoplastic material.
  • the feed pin comprises an abrasion resistant element which forms at least the base portion of the feed pin and is locked to the tension member by a molded thermoplastic mass.
  • the abrasion resistant element can be either a hollow shell or sleeve element which forms at least the base portion of the feed pin and is locked to the tension member by a core of molded thermoplastic which is integral with either the tension member or drive teeth molded to the tension member.
  • the tension member comprises a molded web and the core of thermoplastic material is integral with the web.
  • the tension member is a thin strip with perforations and the core of thermoplastic material is integral with a molded perforations of the strip in a manner whereby the core and drive tooth are mechanically to the strip.
  • the interior of the shell is provided with groove like elements which interact with the molded core to lock the shell in place on the tension member.
  • the shell may also be locked in place externally by means of a tip portion of the core material which extends through an opening connecting the interior of the shell with the tip.
  • the external tip portion of the core can be shaped so as to blend with the contoured exterior of the shell and forms the tip of the feed pin.
  • the shell has a flared skirt which is embedded in the molded thermoplastic material.
  • the feed pin is formed entirely of abrasion resistant material and has a projection which passes through the perforations in the tension member strip. The feed pin is attached to the tension member by molding the drive teeth onto the pin projection in various ways whereby a rigid locked assembly is obtained.
  • the benefit obtained from the invention in its various forms is that it allows feed belts to be easily produced by molding multiple pins to the belt in a single operation. It also provides accurate location of the pins and drive teeth with precision surfaces for maintaining alignment of the feed belt and pins during paper feeding operations in a feed tractor.
  • a feed belt 10 of the type usable in tractor feed mechanisms employed in high speed printers and other devices comprises an endless flexible tension member 11 to which is attached a plurality of uniformly spaced drive elements 12.
  • Tension member 11 can be made from a strip of stainless steel, polyimide or some other relatively inextensible material.
  • Drive elements 12 are attached to tension member 11 and comprise feed pins 12a projecting from the outer or feeding surface 11a for engaging feed holes in a paper medium and drive teeth 12b projecting from the inner or drive side 11b for engagement by drive mechanism such as drive pulleys.
  • tension member 11 is a thin band of stainless steel with a row of uniformly spaced and aligned perforations (11c, Fig.
  • tension member 11 and the drive elements 12 may be molded as a single piece with or without embedded reinforcing elements.
  • belt 10 is entrained around a pair of pulleys 13 and 14 which together constitute the feeding mechanism supported between a pair of support plates (not shown) one of the drive pulleys being connected to a drive mechanism as more fully described in the aforementioned copending application Serial No. 07/303, filed 01/27/89.
  • tension member 11 is supported along its edges by guide surfaces 15a and 16a of plates 15 and 16 of a tractor mechanism which together form a channel 17 within which drive teeth 12b travel.
  • Drive teeth 12b have a side edge 12c which bears against a side wall 15b in side plate 15 for at least a portion of the distance between the pulleys 13 and 14.
  • feed pins 12a are maintained in alignment with the feed holes in the paper which is also supported on guide surfaces 15a and 16a.
  • Drive teeth 12b which are molded and integral with feed pins 12a, are preferably made with a low friction thermoplastic material such as nylon to minimize the wear of the drive teeth surfaces in traveling along the guide walls 15b of side plate 15 and over the drive pulleys.
  • nylon is susceptible to considerable wear in higher speed printers as previously discussed.
  • feed pin 12a comprises a base portion 12d and a cap portion 12e.
  • Base portion 12d is conical although it could be cylindrical and the cap portion 12e has an involute taper.
  • Cap portion 12e is tapered to enable it to enter and pass through the holes in the paper without engaging the edges of the paper. Edge engagement occurs at the base portion 12d. Due to the abrasive action of the paper, base portion 12d becomes worn so that its surface dimensions become changed.
  • Broken line 12f represents the original surface of base portion 12d whereas solid line 12g shows the degree to which the base portion 12c can wear over a relatively short period of time when used in high speed printers. This wear starts at a distance h above band 11. Given enough time surface 12g becomes concave and forms an undercut which overhangs the edges of the holes in the paper thereby causing tearing at the feed holes when the paper is stripped from the feed pins 12a.
  • the feed pin 12a in accordance with one embodiment of this invention, comprises a hollow abrasion resistant shell 20 locked to band 11 by a molded thermoplastic core 30 in cavity 21 which passes through perforation 11c in band 11 and is integral with the molded drive tooth 12b.
  • the exterior surface of shell 20 is contoured to have a conical base portion 22 and a tapered cap portion 23. Cap portion 23 is truncated to form edge 24.
  • the contour of base portion 22 may be conical and the cap portion 23 may be contoured as an involute as more specifically described in copending application Serial No. 153,394.
  • Shell 20 may have a cylindrical base portion as well as other contours.
  • shell 20 is locked externally to band 11.
  • Core 30 extends from cavity 21 in shell 20 through passage 25 and ends in an external tip portion 31 which overlaps edge 24 of shell 20.
  • the external surface 32 of tip portion 31 is contoured to blend with cap portion 23 of shell 20 to complete the tip of the feed pin 12a.
  • Shell 20 is further locked to band 11 by making cavity 21 large enough at its base so that core 30 overlaps a portion 11d of the upper surface of band 11 surrounding perforation 11c which is preferably non-circular. This locks the molded core 30 to band 11 and prevents rotation of the feed pin assembly.
  • a totally interlocked system is formed which produces a rigid, fixed feed pin and tension member assembly.
  • the mechanical lock is formed by a machined groove 26 on the inside cavity wall of shell 20.
  • Core 30 has a correspondingly shaped rib 33 which occupies groove 26 and locks shell 20 in place.
  • the external surface of cap portion 23 is completely tapered, preferably as an involute, and has a vent hole 27 which permits air to escape during molding of core 30 into cavity 21.
  • This type of shell 20 is useful where it is desirable to have the entire pin surface abrasion resistant. Locking of the shell 20 to band 11 is internal.
  • abrasion resistant material may also abrade the tension member and thereby cause premature belt failure.
  • a spacer 36 is provided between the bottom edge of shell 20 and the top surface 11a of band 11 as seen in Fig. 8.
  • Spacer 36 may be thermoplastic and may an extension of core 30 formed when core 30 is formed by injecting thermoplastic into cavity 21 where there is a small separation permitted between the bottom edge of shell 20 and the top surface 11a of band 11.
  • spacer 36 may take the form of a gasket type element attached to the bottom edge of shell 20. A suitable material for such gasket element would be compatible with the molding process and that prevents abrasion or fretting by the shell 20.
  • a suitable spacer could be made of polyimide.
  • the thickness of spacer 36 could vary depending on the location of the wear region of shell 20 and should not exceed the dimension h in Fig. 4.
  • abrasion resistant shell 20 is locked to core 30 by an adhesive bonding material.
  • core 30 and drive tooth 12b are molded in locking relation onto band 11 through perforation 11c as previously described.
  • a bonding agent 40 is then applied to appropriate surfaces and the pin shaped shell 20 applied to the core 30.
  • Bonding agent 40 could be either an epoxy or anaerobic adhesive. Because of low temperatures incurred during bonding, shell 20 could be made from chrome plated ABS or similar materials. The disadvantage of this approach is that the shells 20 applied individually after the molding process instead of during the molding process as for the previous embodiments.
  • core 30, drive tooth 12b and tension member 11 are formed from a single integral molded thermoplastic matrix.
  • the drive teeth 12b are located on either side of the shell 20 and the core 30 is integral with the tension member portion of the matrix.
  • the shell 20 is formed from a thin hollow piece of metal such as steel, brass, or aluminum with a plated surface of nickel and/or chrome, or unplated stainless steel.
  • the shape of shell 20 is an involute cap portion 23 on a truncated cone base portion 22 as in previous embodiments.
  • shell 20 is provided with a partial flaring skirt 24 at the bottom edge of the cone or base portion 22.
  • the shell 20 is filled with a molded thermoplastic core 30.
  • the flared skirt 24 is embedded in the core and/or tension member thermoplastic thereby more firmly locking the shell 20 in place on the belt assembly.
  • Suitable abrasion resistant materials for making the shell 20 can be either ceramic, metallic or polymeric. In general, the harder the material the greater its resistance to abrasion.
  • a suitable metallic material would be an iron or steel that is compatible with machining, forming, forging, sintering or coining to form the shell 20. If a corrosion resistant material is not used, or further wear resistance is desired, then either a chrome or electroless nickel plating of the shell is recommended. For additional abrasion resistance a steel shell could best be treated or carburized and the electroless nickel could be baked.
  • the polymeric material for making the shell 20 could be any polymer that has a higher melting temperature than the temperature of the molding process of the core such as polyimidamide, PEEK (polyethylene-ethethyleneketone) or phenolic.
  • thermoplastic material used for making core 30 and drive tooth 12b is preferably a PAN carbon fiber and PTFE filled nylon 6/10 which has mutually compatible wear characteristics with respect to a PAN carbon and PTFE filled tractor body as described in copending application 07/303,707.
  • any suitable filled or unfilled thermoplastic could be used.
  • the tension member can be made from any strong, thin, flexible relatively inextensible material that can withstand the temperatures encountered during the molding. Suitable materials include polyimide and stainless steel.
  • feed pin 12a is formed entirely of abrasion resistant material.
  • Feed pin 12a has integral projection or post 12c which extends through perforation 11c of band 11.
  • Post 12c contains a mechanical interlock such as groove 12d.
  • Feed pin 12a is locked onto band 11 by molded drive tooth 12b which fills the space between post 12c and the edges of perforation 11c and the groove 12d.
  • the drive tooth 12b and tension member 11 are molded together with thermoplastic material and are locked to the post 12c of abrasive resistant pin 12a.
  • a feed pin 12a of abrasion resistant material has a post 12c with interlock grooves 12d.
  • pin 12a is molded through perforation 11c of band 11 and the post is interlocked to the band around perforation 11c.
  • Drive tooth 12b is then molded to post 12c.
  • Perforation 11c is preferably non-circular to prevent rotation.
  • the material for feed pin 12a must be able to withstand the temperatures for molding drive tooth 12b. Satisfactory materials for pin 12a are PEEK, PPS, or polyimide either glass or carbon filled. Nylon or polycarbonate (carbon or PTFE filled) can be used for the drive tooth 12b.
  • Fig. 7 shows a variation of the double molded bets described in Fig. 13.
  • Core 30 is integral with drive tooth 12b and has a higher melting temperature than the material of wear resistant shell 20.
  • drive tooth 12d and core 30 are first molded through perforation 11c in member 11. Then abrasion resistant shell 20 is molded over and interlocked with core 30.
  • Core 30 has rib 34 and groove 35 locked with groove 28 and rib 29 respectively.
  • a mold for making the feed belt assembly of Fig. 5 comprises a tool block 50 having a series of shell cavities 51.
  • the number of shell cavities 51 equals the number of feed pins 12a to be provided on the belt and the spacing corresponds to the desired spacing of the feed pins.
  • Shells 20 are first made of abrasion resistant material as previously described. An abrasion resistant shell 20 is inserted into each shell cavity 51. Band 11 with perforations 11c is placed onto block 50 with perforations 11c centered with shell cavities 51.
  • Tool block 52 with tooth cavities 53 having the shape of drive teeth to be formed on the belt assembly is placed over the band 11 and block 50.
  • a fluid channel 54 has outlet ports 55 connected to tooth cavities 53 and an inlet port 56.
  • nozzle 57 injects thermoplastic fluid into port 56, through channel 54 and outlet ports into tooth cavities 53, through perforations 11c in band 11 and through hollow shells 20 and into shell cavities 51.
  • the tension member can be either flat or an endless loop. However, in the latter case, the greater care would be required in maintaining shells 20 in their respective cavities where a curved mold is used.
  • the mold for making the belt assembly with a molded tension member as in Fig. 10 includes channel 58 which connect with tooth cavities 53 and shell cavities 51.
  • the mold of Fig. 16 is essentially the same as in Fig. 15 except that the band 11 is not inserted into the mold.
  • fluid thermoplastic material such as previously specified is injected into inlet port 56, the fluid passes into channel 58 from tooth cavities 53 to form the tension member as well as the core 30, tip portion 31 and drive teeth 12b of the belt assembly of Fig. 10.
  • a belt assembly is provided which is both simple to make with minimum cost and maximum accuracy in locating the feed pins and controlling the size and shape of the dirive teeth which can be used for maintaining alignment of the feed pins for paper feeding.
  • an improved feed pin belt is provided which eliminates the problem of paper abrasion and wear of the feed pins. While abrasion resistant elements are shown in the particular shapes of all or most of a feed pin, is to be understood that such elements could have other shapes and forms which are locked to the core material at the sites where abrasion occurs and need not surround all or most of the core material. While the use of abrasion resistant elements is shown for paper feeding devices, it is to be understood that the invention would have utility in other devices where similar abrasion problems are experienced from the fed material onto the feed element.

Landscapes

  • Advancing Webs (AREA)
  • Handling Of Sheets (AREA)
  • Paper Feeding For Electrophotography (AREA)

Claims (24)

  1. Vorschubriemen-Aufbau mit einem biegsamen Zugglied und mindestens einem Transportstachel, der aus einer Oberfläche des Zugglieds herausragt,
    wobei der Transportstachel so gestaltet ist, daß er in Öffnungen in einem transportierten Material wie Papier eingreift,
    wobei der Transportstachel zumindest teilweise aus einem Material hergestellt ist, das gegen den Verschleiß durch das transportierte Material beständig ist, und
    wobei der Transportstachel mit dem Zugglied durch einen durch Spritzguß mit dem Transportstachel verbundenen Kern aus Thermoplast verankert ist.
  2. Vorschubriemen-Aufbau gemäß Anspruch 1, wobei
    der Transportstachel einen verschleißfesten Teil umfaßt, der zumindest einen Teil des Kerns bedeckt, und
    der verschleißfeste Teil mit dem Spritzguß-Kern mechanisch verankert ist.
  3. Vorschubriemen-Aufbau gemäß Anspruch 2, wobei
    der verschleißfeste Teil eine hohle Hülse ist und der Spritzguß-Kern mit dem Hülseninneren mechanisch verankert ist.
  4. Vorschubriemen-Aufbau gemäß Anspruch 3, wobei
    das Zugglied aus einem Spritzgußteil besteht, und
    der Spritzguß-Kern in das Spritzguß-Zugglied integriert ist.
  5. Vorschubriemen-Aufbau gemäß Anspruch 4, wobei
    das Spritzguß-Zugglied mindestens einen Spritzguß-Antriebszahn enthält, der in das Zugglied intregriert ist, und
    der Spritzguß-Kern in den Spritzguß-Antriebszahn integriert ist.
  6. Vorschubriemen-Aufbau gemäß Anspruch 3, wobei
    das Zugglied einen dünnen, biegsamen Streifen enthält, der eine Öffnung zur Positionierung des Transportstachels auf einer Seite des Streifens aufweist,
    der Riemen-Aufbau ferner mindestens einen Spritzguß-Antriebszahn aus thermoplastischem Material auf der anderen Seite des Streifens enthält, und
    das thermoplastische Material des Antriebszahns in das thermoplastische Material des Kerns integriert ist und durch die Öffnung in das Streifen-Material verläuft.
  7. Vorschubriemen-Aufbau gemäß Anspruch 6, wobei
    das thermoplastische Material, das den Antriebszahn bildet, durch die Öffnung in dem Streifen verlauft und auf der gegenüberliegenden Seite des Streifens einen Vorsprung zur Befestigung des Hülsenteils an dem Streifen bildet.
  8. Vorschubriemen-Aufbau gemäß Anspruch 7, wobei
    die hohle Hülse einen auf einem unteren Teil gelegenen oberen Teil besitzt und der obere Teil eine Durchverbindung zu einer Aushohlung indem hohlen Hülsenteil besitzt, und
    sich das thermplastische Material, das den Spritzguß-Antriebszahn bildet, und der Kern in der Aushöhlung befinden und einen Teil enthalten, der durch das Loch verläuft und in einer Spitze endet, die mit dem oberen Teil des Hülsenteils zusammenpaßt, um das Hülsenteil mit dem Zugglied zu verankern.
  9. Vorschubriemen-Aufbau gemäß Anspruch 8, wobei
    die Außenfläche des oberen Teils des Hülsenteils verjüngt ist und die Spitze des Kerns oberhalb des oberen Teils eine Außenfläche hat, die mit der Außenfläche des oberen Teils bündig abschließt, um die Verjungung des Stachelelements zu vervollständigen.
  10. Vorschubriemen-Aufbau gemäß Anspruch 6, wobei
    die innere Seitenwand des Hülsenteils Nuten besitzt, und
    das thermoplastische Material des Kerns durch Spritzguß in die Aushöhlung eingespritzt ist und in die Nuten eingreift, um das Stachelelement auf dem Streifenglied zu verankern.
  11. Vorschubriemen-Aufbau gemäß Anspruch 6, ferner mit
    einem Abstandhalter aus verschleißfestem Material zwischen dem Hülsenteil und dem Streifenglied.
  12. Vorschubriemen-Aufbau gemäß Anspruch 11, wobei
    der Abstandhalter in den Kern integriert ist.
  13. Vorschubriemen-Aufbau gemäß Anspruch 11, wobei
    der Abstandhalter ein Dichtungselement ist.
  14. Vorschubriemen-Aufbau gemäß Anspruch 6, wobei
    das Hülsenteil mit dem Material des Kerns in der Aushöhlung verbunden ist.
  15. Vorschubriemen-Aufbau gemäß Anspruch 6, wobei
    das Hülsenteil eine dünne Hülse aus verschleißfestem Material mit einer konisch erweiterten Kante ist, und
    die konisch erweiterte Kante in das thermoplastische Material, das den Kerns im Inneren der Hülse bildet, eingebettet ist.
  16. Vorschubriemen-Aufbau für einen Papiervorschubtraktor, der folgendes umfaßt:
    ein dünnes Zugglied mit Öffnungen in gleichmäßigen Abständen,
    Stachelelemente, die in Transportlocher in Papier eingreifen, das durch den Traktor bewegt wird, und die aus einer Seite des Zugglieds herausragen,
    wobei die Stachelelemente aus Material bestehen, das gegenüber dem Verschleiß durch das Papier beständig ist, und einen Vorsprung besitzen, der sich durch die Öffnungen zur gegenüberliegenden Seite des Zugglieds erstreckt,
    wobei der Vorsprung auf der gegenüberliegenden Seite des Zugglieds Nuten besitzt, und
    Antriebszähne aus thermoplastischem Material, das durch Spritzguß auf dem Vorsprung und in den Nuten des Vorsprungs hergestellt wird, um die Stachelelemente mit dem Zugglied zu verbinden.
  17. Vorschubriemen-Aufbau gemäß Anspruch 16, wobei
    der Vorsprung des Stachelelements so angeordnet ist, daß zwischen dem Vorsprung und den Kanten der Öffnungen im Zugglied eine Lücke bleibt, und
    das thermoplastische Material, das die Antriebszähne bildet, die Lücke ausfüllt und den Vorsprung umgibt, wodurch das, Stachelelement mit dem Zugglied fest verankert wird.
  18. Vorschubriemen-Aufbau gemäß Anspruch 16, wobei
    das Stachelelement aus verschleißfestem Material durch Spritzguß aus einem hochgradig temperaturbeständigen thermoplastischen Material hergestellt wird und danach den Vorsprung bildet, der durch die Öffnungen im Zugglied verläuft und sich mit dem Zugglied verankert, und
    der Antriebszahn ein thermoplastisches Material mit niedrigerer Schmelztemperatur ist, das durch Spritzguß auf dem Vorsprung des Stachelelements aus thermoplastischem Material mit höherer Schmelztemperatur hergestellt ist.
  19. Vorschubriemen-Aufbau gemäß Anspruch 6, wobei
    der Vorsprung des Stachelelements keinen kreisförmigen Querschnitt besitzt.
  20. Vorschubriemen-Aufbau gemäß Anspruch 1, wobei
    das verschleißfeste Material, das das Stachelelement bildet, metallischer Natur ist.
  21. Vorschubriemen-Aufbau gemäß Anspruch 1, wobei
    das verschleißfeste Material, das das Stachelelement bildet, keramischer Natur ist.
  22. Vorschubriemen-Aufbau gemäß Anspruch 14, wobei
    das verschleißfeste Material polymerer Natur ist.
  23. Vorschubriemen-Aufbau gemäß Anspruch 18, wobei
    das Stachelelement aus Eisen oder Stahl ist, und
    das Stachelelement durch Prägen, Formen, maschinelle Bearbeitung oder Sintern hergestellt wird.
  24. Vorschubriemen-Aufbau gemäß Anspruch 1, wobei
    das Zugglied eine endlose Schleife ist.
EP19900115228 1989-09-07 1990-08-08 Verschleissfester Traktorriemen Expired - Lifetime EP0416305B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US40424289A 1989-09-07 1989-09-07
US404242 1989-09-07

Publications (3)

Publication Number Publication Date
EP0416305A2 EP0416305A2 (de) 1991-03-13
EP0416305A3 EP0416305A3 (en) 1991-08-07
EP0416305B1 true EP0416305B1 (de) 1994-04-20

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EP19900115228 Expired - Lifetime EP0416305B1 (de) 1989-09-07 1990-08-08 Verschleissfester Traktorriemen

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EP (1) EP0416305B1 (de)
JP (1) JPH0780326B2 (de)
DE (1) DE69008279T2 (de)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5680329B2 (ja) * 2010-01-21 2015-03-04 株式会社フオトクラフト社 プリンタ
GB201819095D0 (en) * 2018-11-23 2019-01-09 Wellwaij Belting Conveyor belt system

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4510729Y1 (de) * 1969-06-02 1970-05-15
US3608801A (en) * 1970-04-16 1971-09-28 Paper Converting Machine Co Web transport system
DE2143901A1 (de) * 1971-09-02 1973-03-08 Ibm Deutschland Traktorriemen fuer den vorschubantrieb von aufzeichnungstraegern
US3825162A (en) 1973-02-20 1974-07-23 L Hubbard Feed mechanism
US3938721A (en) * 1974-08-19 1976-02-17 The Standard Register Company Pin belt mechanism for movement of a continuous strip
JPS597092U (ja) * 1982-07-07 1984-01-18 株式会社西原環境衛生研究所 バツチ式活性汚泥処理装置
US4585606A (en) * 1984-09-27 1986-04-29 International Business Machines Corporation Method of making an endless forms feed tractor belt
JPH01118947U (de) * 1988-02-04 1989-08-11

Also Published As

Publication number Publication date
JPH0780326B2 (ja) 1995-08-30
DE69008279T2 (de) 1994-11-17
DE69008279D1 (de) 1994-05-26
EP0416305A3 (en) 1991-08-07
EP0416305A2 (de) 1991-03-13
JPH0399866A (ja) 1991-04-25

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