EP0150971B1 - A curved cloth stretch frame construction for an embroidery sewing machine - Google Patents

A curved cloth stretch frame construction for an embroidery sewing machine Download PDF

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Publication number
EP0150971B1
EP0150971B1 EP19850300407 EP85300407A EP0150971B1 EP 0150971 B1 EP0150971 B1 EP 0150971B1 EP 19850300407 EP19850300407 EP 19850300407 EP 85300407 A EP85300407 A EP 85300407A EP 0150971 B1 EP0150971 B1 EP 0150971B1
Authority
EP
European Patent Office
Prior art keywords
frame body
frame
embroidery
rotation
transmitting means
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
Application number
EP19850300407
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0150971A2 (en
EP0150971A3 (en
Inventor
Yoshio Shibata
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.)
Barudan Co Ltd
Original Assignee
Barudan Co Ltd
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 Barudan Co Ltd filed Critical Barudan Co Ltd
Publication of EP0150971A2 publication Critical patent/EP0150971A2/en
Publication of EP0150971A3 publication Critical patent/EP0150971A3/en
Application granted granted Critical
Publication of EP0150971B1 publication Critical patent/EP0150971B1/en
Expired legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D05—SEWING; EMBROIDERING; TUFTING
    • D05B—SEWING
    • D05B21/00—Sewing machines with devices for automatically controlling movement of work-carrier relative to stitch-forming mechanism in order to obtain particular configuration of seam, e.g. programme-controlled for sewing collars, for attaching pockets
    • D—TEXTILES; PAPER
    • D10—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B—INDEXING SCHEME ASSOCIATED WITH SUBLASSES OF SECTION D, RELATING TO TEXTILES
    • D10B2501/00—Wearing apparel
    • D10B2501/04—Outerwear; Protective garments
    • D10B2501/042—Headwear

Definitions

  • the present invention relates to a curved cloth stretch frame construction which is used for embroidering sleeve-shaped curved cloth works such as caps, arms of undershirts or the like.
  • a planar cloth work is usually stretched on an annular tambour and a core of a slightly smaller diameter is laid on and pressed against the cloth work, which is thus held between the inner side surface of the tambour and the outer side surface of the core, and is kept tightly stretched.
  • the tambour is longitudinally transferred and transversely shifted on a plane by a drive means linked with a connection means cooperating with the tambour, and the cloth work can thus be embroidered.
  • the tambour can not be used for embroidering a nonplanar work, e.g: a cap with a visor.
  • a curved cloth stretch frame construction for an embroidery sewing machine having a vertically reciprocating stitch needle and a movable frame adapted to move two-dimensionally on a substantially horizontal plane, comprising a substantially cylindrical frame body having a free front end thereof.
  • the present invention is characterized in that the frame body encloses a space large enough to contain a bed of said embroidery sewing machine, an embroidery window disposed in said frame body, a reciprocation transmitting means co-operating with said frame body to transmit axial drive to said frame body, and rotation transmitting means co-operating with said frame body to transmit rotation drive to said frame body, said reciprocation transmitting means and said rotation transmitting means being operably connected with said movable frame, and said frame body, together with a curved cloth work, stretched over said embroidery window, being supported for rotation and axial transfer between said bed and said stitch needle.
  • Fig. 1 shows all of an embroidery sewing machine.
  • a pair of head 2 are mounted, at the base portions thereof, on a base 1. Although two heads are shown in the figure, only one will suffice, or more than two may be provided.
  • a stitch needle 3 is provided in the front end portion of the heads 2 for vertical movement as is known.
  • a bed 4 is disposed under the head 2 with the rear base portion thereof secured in the base 1. The front end portion of the bed 4 is provided with a needle plate 5 having a needle hole 5a opposite to the needle 3, as shown in Figs. 2 and 5. Inside the bed 4, is contained a well known shuttle.
  • a movable frame 6 is placed on the base 1 and is adapted for forward and rearward movement (in the direction shown by an arrow 7) and right and left (in the direction shown by an arrow 8) by a transfer mechanism (not shown) in accordance with preprogramming.
  • a curved cloth stretch frame 9 is accommodated over the bed 4 and is constructed, as shown in Figs. 2 to 6, so as to be moved forward and rearward in accordance with the front and rear transfer of said movable frame 6 and to be rotated around the axis thereof in response to the right and left shift of the movable frame 6.
  • the curved cloth stretch frame 9 is shown, in Fig. 1, only for one of the beds 4 but the other bed is provided, of course, with another frame 9.
  • a frame body 10 of the curved cloth stretch frame is constructed in the form of a hollow cylinder and consists of a first frame section 11 at the rear base side and a second frame section 12 at the front end said two frame sections being made by dividing the frame 8 by a plane crossing rectangularly the axis of the frame 9.
  • a plurality of connection cuts 13 are formed at the front end of the first frame section 11.
  • Connection projections 14 are formed at the rear end of the second frame section 12 and are adapted to be inserted in said connection cuts 13, with the axes of said sections coinciding each other, the relative rotation between said two sections around the axes being thus prevented.
  • a coupling hole 15 is formed in the first frame section 11, a threaded hole 16 is formed in the second frame section 12, and a resilient connection piece 17 is fixed on the outer surface of the second frame section 12 by a fastening screw 18 inserted in the threaded hole 16.
  • the extreme end of the connection piece 17 is formed as a coupling projection 19 extending towards the axis of the frame body 10 as shown in Fig. 3.
  • the couple projection 19 is adapted to be inserted in said coupling hole 15, the frame sections 11 and 12 being thereby prevented from parting axially from each other.
  • a plurality of connection pieces 17 are used.
  • the outer surface of the frame body 10 is formed as a curved cloth stretch surface 20, the upper half of which is of a semicylindrical form with an arcuate cross section 'around the axis of said frame body 10.
  • This surface 20 is intended to have put thereon the internal side surface of a cap 21 shown exemplarily as a cloth work to be embroidered (called a curved cloth as well).
  • the surface 20 is shown, in the figure, as a circular cylindrical surface but may be a polygonal cylindrical surface consisting of several planar areas.
  • the front end of the frame body 10 is made a free end, onto which the cap 21 can easily be put from the free end side of said frame body 10.
  • an accomo- dation space 22 in which said bed 4 is disposed as shown in Figs. 8 and 9.
  • This accommodation space 22 is made sufficiently large so that the frame body 10 may rotate by a prescribed angle around the axis thereof with the bed 4 disposed therein.
  • An opening 23 is bored through the curved cloth stretch surface 20 and is widely defined in the form of a window. This is hereafter called an embroidery window as well.
  • This window 23 is adapted to allow the stitch needle 3 to pass therethrough from over the frame body 10 towards the bed 4.
  • a cloth fastener 24, with one end thereof secured on the outer surface of the second frame section 12, is made of a resilient material and is adapted to clamp the cloth work cap 21.
  • a plurality of cloth fasteners 24 are attached on the second frame section 12.
  • a toothed wheel 25, formed on the outer surface of the first frame section 11 is shown as an example of a driven member of a drive transmitting means and includes a number of teeth 25a projecting from the outer surface of the first frame section 11.
  • This toothed wheel 25 serves both as a main part of a rotation transmitting means to rotate the first frame section 11 along the curved cloth stretch surface 20 and a main part of a reciprocation transmitting means to transfer axially the first frame section.
  • the rotation transmitting means and the reciprocation transmitting means may be prepared as separate units.
  • a frame support means 26 for the curved cloth stretch frame 9 bears up the same for rotation around and reciprocation along the axis of said frame 9. In this frame support means 26, a sustaining bracket 27 is secured against the base 1 as shown in Fig.
  • a guide rail 28 is mounted fixedly on the sustaining bracket 27, and a guide groove 28a is formed by a bottom wall 28c and both side walls 28b.
  • This guide groove 28a is formed along the direction of the front and rear movement of the aforementioned movable frame 6.
  • On each inner side of said side walls 28b is provided a guide slot 29 extending horizontally.
  • a slide member 30 is fitted in said guide groove 28a for longitudinal movement with both side edges thereof received in said guide slots 29 as shown in Fig. 7.
  • a mount plate 31 is secured on the slider member 30, support poles 32 and 33 are stood on the mount plate 31, a support arm 34 is fixed on the support pole 32, and support arms 35 and 36 are fixed on the support pole 33.
  • a grooved gear wheel 37 is rotably mounted on said support arm 34 and consists of a gear 37a and of a pair of flanges 37b attached to both sides of said gear 37a.
  • This gear 37a is formed so as to be in mesh with said toothed wheel 25, and the width of a groove 37c defined by the flanges 37b is adjusted to be suitable for receiving said toothed wheel 25.
  • Another grooved gear wheel 38 is carried by said support pole 32 for rotation and is similarly constructed.
  • a roller 39 is rotatably supported by said support pole 33 and rollers 40 and 41 are rotatably. mounted on said support arms 35 and 36 respectively. These rollers 39 to 41 are disposed so as to support rotatably the lower side surface of said second frame section 12 as shown in Fig. 8.
  • the curved cloth stretch frame 9 is thus supported with said toothed wheel 25 in mesh with the grooved gear wheels 37 and 38 and with the bottom surface of said second frame section 12 resting on said rollers 39 to 41 as shown in Figs. 8 and 9.
  • the bed 4 is positioned at the upper region of said accomoda- tion space 22 and the upper surface of the needle plate 5 is close to the curved cloth stretch surface 20 as shown in Figs. 10 and 11.
  • a transmitting frame 42 is now fixed on said movable frame 6 by a mounting screw 43 and is adapted to rotate said curved cloth stretch frame 9 around the axis thereof and to transfer the same front and rear along said axis in accordance with the movement of said movable frame 6.
  • the transmitting frame 42 includes a frame base 44 and a slide duct 45 which is formed in the frame base 44 and is adapted to engage said toothed wheel 25.
  • a rack 46 is formed on the bottom surface of the slide duct 45 and is provided with rack teeth 46a engageable with said engage toothed wheel 25.
  • Said toothed wheel 25 rests rotatably on said grooved gear wheels 37 and 38, and is received in said slide duct 45 as shown in Figs. 2 and 9; the rack 46 being in mesh with said toothed wheel 25.
  • the connection piece 17 is first disconnected from the coupling hole 15, the second frame section 12 of said curved cloth stretch frame 9 is then separated from said first frame section 11 as shown in Fig. 4, and the cap 21 is put on said separated second frame section 12.
  • the cap 21 is set on the free end of said second frame section 12 as shown in Fig. 6, and an area on said cap 21 to be embroidered (an embroidery area) is brought to the central portion of said embroidery window 23 and is abutted on the curved cloth stretch surface 20.
  • the peripheral edge of the cap 21 is clipped by the cloth fastener 24 on the outer side surface of the second frame section 12 and the visor 21 a is similarly clipped by the cloth fastener 24, the cap 21 being thus fixed.
  • the connection projection 14 of the second frame section 12 is fitted in the connection cut 13 of the first frame section 11 and the couple projection 19 of the connection piece 17 is fitted in the couple hole 15, the second frame section 12 being thus jointed with the first frame section 11 as shown in Fig. 2.
  • the embroidery area on the cap 21 stretched on the embroidery window 23 is placed directly over the needle plate 5 of the bed 4 and under the stitch needle 3.
  • the stitch needle 3 moving vertically proceeds to stitch an embroidery thread on the embroidery area on the cap 21 and the movable frame 6 is driven front and rear and right and left in accordance with a preprogrammed embroidery pattern.
  • the movable frame 6 is driven forward or backward in this manner the curved cloth stretch frame 9 is translated accordingly with the slide member 30 travelling forward or rearward along the guide slots 29, since the toothed wheel 25 on the curved cloth stretch frame 9 is held by the slide duct 45 of the transmitting frame 42 and, in addition, is fitted in the grooves 37c of the grooved gear wheels 37 and 38.
  • the curved cloth stretch frame 9 When the movable frame 6 is driven right and left, the curved cloth stretch frame 9 is rotated around the axis thereof together with the toothed wheel 25 rotated by the rack 46.
  • the curved cloth stretch frame 9 is rotatably supported by the rollers 39 to 41 and the grooved gear wheels 37 and 38, and the toothed wheel 25, being further received in the grooved gear wheels 37 and 38, is in mesh with the rack gear 46a of the transmitting frame 42.
  • the embroidery area on the cap 21 stretched on the embroidery window 23 is transferred forward and rearward by the movement of the movable frame 6 and is shifted right and left by the right and left movement of the movable frame 6 as shown in Figs. 10 and 11; a prescribed embroidery pattern being stitched on the embroidery area on the cap 21.
  • the cap 21 may alternatively be set on the second frame section 12 already jointed with the first frame section 11 as shown in Fig. 11.
  • Figure 12 shows a stocking 21e, expandable and contractable due to the elasticity thereof, to be embroidered.
  • the stocking 21 can simply be clamped on the free front end portion of the frame body 10e due to the self elasticity of the stocking 21e.
  • the elasticity of the stocking 21 e is thus utilized as a function to clip the stocking 21 against the curved cloth stretch frame 9e.
  • Members which are considered functionally or constructionally equivalent to those shown in previous figures are given the numerals same as in those figures but with an alphabetical suffix e, repeated descriptions of such members being omitted.
  • Numerals in the following figures are successively given alphabetical suffixes f, g, h, i, j, k and I according to the same idea if necessary, repeated descriptions being similarly omitted.
  • Figure 13 shows now a case in which a long cylindrical cloth work, an arm 21f of a shirt, is embroidered.
  • the arm 21f is fastened against said curved cloth stretch surface 20 at both sides of said embroidery frame 23f by passing a pair of rubber bands 47 and 48 after the arm 21f is adapted on the frame body 10f and the embroidery area is correctly positioned on the embroidery window 23f.
  • the arm 21f can be kept tightly stretched and is correctly embroidered.
  • Figure 14 shows how a mark or the like is embroidered on a breast pocket 21 g.
  • the free end portion of the frame body 10g is made thinner so as to be inserted into the pocket 21g.
  • the cloth fastener 24g for clipping the cloth work and the pocket 21g are provided on the frame body 10g.
  • a fastening piece 49 of the cloth fastener 24g is pivoted and is biased by a spring not shown so that the tip portion of the fastening piece 49 presses down. Under the tip of this fastening piece 49 is attached a needle cloth 50 by which a cloth work is clipped.
  • the fastening piece 49 may alternatively be a spring plate attached to the frame body 10g.
  • FIG 15 shows a different embodiment of the embroidery window.
  • the embroidery window 23h is provided as a cut formed to extend to the free end of the frame body 10h.
  • Figures 16 to 18 show an embodiment of the curved cloth stretch frame construction different in the stretch frame and the frame support means and including alternative drive means.
  • the curved cloth stretch frame 9i in this embodiment consists of the frame body 10i having the form of an incomplete circular cylinder with the lowest quarter of the side wall thereof cut away longitudinally.
  • the frame 10i consists of a single member and the upper surface thereof serves as a semicylindrical curved cloth stretch surface 20i.
  • an elongated support bar 51 is arranged for rotation and axial transfer, by a bearing means not shown.
  • Support arms 52 and 53 are fixed on the support bar 51 at one ends thereof and on the internal surface of said frame body 10i at the other ends thereof, which serve both as a connection part for axial reciprocation and for rotation. Pairs of the support arms 52 and 53 are arranged at two axial points on the support bar 51 and the frame body 10i can be supported around the support bar 51 via these support arms 52 and 53. Said support bar 51 is positioned so as to pass the center of curvature of the external surface of the frame body 10i.
  • a gear 54 is fixed to one end of the support bar 51 and is adapted to be rotated and to be axially transferred by a drive means 55.
  • a guide rod 56 of a rectangular cross section is rotatably supported in parallel with said support bar 51 by bearing means not shown, and is adapted to be rotated by an electric motor 57 in the forward and the reverse directions.
  • a transfer member 58 is fitted on the guide rectangular rod 56 for axial sliding movement and is provided with a gear 59 on the outer surface thereof. At both sides of the gear 59 are formed flanges 60, between which a groove 61 is defined. Said gear 54 is received in this groove 61 and is in mesh with said gear 59.
  • a neck 62 is formed on the side of the transfer member 58 and one end of an operation rod 63 is received in the neck 62.
  • An endless timing belt 66 is passed round a pair of pulleys 64 and 65.
  • One transfer side 66a of this timing belt 66 is disposed in parallel with said guide rectangular rod 56 and the other end of said operation rod 63 is fixed on this transfer side 66a.
  • One of said pulleys 64 is adapted to be rotated by another electric motor 67 in forward and reverse directions. Said electric motors 57 and 67 are controlled to operate in response to the prescribed embroidery pattern.
  • the electric motor 57 operates first to rotate said guide rectangular rod 56, the transfer member 58 and the gear 59 are then actuated to rotate the gear 54 and the support bar 51, and the curved cloth stretch frame 9i is thereby rotated to shift the curved cloth work right and left.
  • the electric motor 67 operates to turn the timing belt 66, the operation rod 63 is then moved forward or backward to slidably actuate the transfer member 58 and the support bar 51 and the curved cloth stretch frame 9i are thereby transferred forward and backward to move the curved cloth work similarly.
  • FIG 19 shows a further embodiment for the curved cloth stretch frame and the bed.
  • the curved cloth stretch frame 9j consists of the frame body 10j having the form of an incomplete circular cylinder with the upper wall thereof cut away longitudinally and the bed 4j is constructed so as to have a circular cross section.
  • the curved cloth work 21j stretched on the frame body 10j is transferred keeping contact with the upper surface of the bed 4j in the embroidery window 23j.
  • Figures 20 and 21 show another embodiment for the curved cloth stretch frame which is suitable for embroidering a slender cylindrically curved cloth work (a slender arm or a close breast pocket of a shirt for ladies for example).
  • the base portion of the curved cloth stretch frame 9k in this embodiment is constructed to have the same form as one shown in foregoing Fig. 6 has, and the front end thereof is closed thinner as shown.
  • the cross section of said front end consists of some arcuate curves around the center of rotation 10a of the frame body as shown in Fig. 21, and the curved cloth stretch frame 9k, on rotating, does not collide with the bed 4k.
  • Figures 22 to 26 show a final embodiment of the curved cloth stretch frame construction.
  • a support shaft 68 is secured at one end thereof on the setting 11.
  • a pair of support plates 69 are fixedly attached on the internal surface of the frame body 101 and are provided with bearings 70 aligned along the axis of the frame body 101.
  • the support shaft 68 is journalled for rotation by the bearings 70 and for axial movement.
  • a pair of flanges 71 are attached on the rear end portion of said frame body 101.
  • On the bottom side of the transmitting frame 421 are formed two corresponding grooves 72 in which said flanges 71 are engageably fitted.
  • a pair of string members 73 and 74 for transmitting drive torque are passed crosswise in opposite directions round the frame body 101 from the transmitting frame 421 through a passage slot 75.
  • One ends 73a and 74a of said string members 73 and 74 are fixed on said transmitting frame 421 by fixing screws 76 threadedly attached in said transmitting frame 421.
  • the other ends of said string members 73 and 74 are passed on the outer surface of the first frame section 111 in opposite directions and are then connected towards a terminal screw 77 inserted threadedly in the first frame section 111 via straining springs 78 (tension springs).
  • the string members 73 and 74 therefore, can tightly be stretched at all times.
  • Said string members 73 and 74 are preferably less stretchy members, for example, wires.
  • the sum of the lengths of the string members 73 and 74 laid on the outer surface of the first frame section 111 is adjusted to be equal to one round on said section 111. The sum, however, may be smaller (a length sufficient to realize a required angle of revolution) or larger (several rounds).
  • one end 73a of the string member 73 is pulled and moved to the left.
  • the other end 73b of the string member 73 consequently pulls and turns the curved cloth stretch frame 91 in the direction shown by an arrow 79.
  • the string member 74 rotates instantly the curved cloth stretch frame 91 in the reverse direction shown by an arrow 80.
  • the string members 73 and 74 do not loose to any extent and the frame 421, therefore, can rotate the curved cloth stretch frame 91 in alternative directions correctly in response to the reciprocation of said frame 421.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Sewing Machines And Sewing (AREA)
EP19850300407 1984-02-02 1985-01-22 A curved cloth stretch frame construction for an embroidery sewing machine Expired EP0150971B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP18879/84 1984-02-02
JP1887984A JPS60162853A (ja) 1984-02-02 1984-02-02 刺繍ミシン用曲布張枠

Publications (3)

Publication Number Publication Date
EP0150971A2 EP0150971A2 (en) 1985-08-07
EP0150971A3 EP0150971A3 (en) 1985-08-21
EP0150971B1 true EP0150971B1 (en) 1988-11-09

Family

ID=11983835

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19850300407 Expired EP0150971B1 (en) 1984-02-02 1985-01-22 A curved cloth stretch frame construction for an embroidery sewing machine

Country Status (3)

Country Link
EP (1) EP0150971B1 (enrdf_load_stackoverflow)
JP (1) JPS60162853A (enrdf_load_stackoverflow)
DE (1) DE3566130D1 (enrdf_load_stackoverflow)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011008045A1 (de) 2011-01-01 2012-07-05 Pfaff Industriesysteme Und Maschinen Ag Näheinheit zum Aufnähen von Taschenzuschnitten

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JPS61186563A (ja) * 1985-12-28 1986-08-20 東海工業ミシン株式会社 刺しゆう縫ミシンにおける基布の移送装置
JPS61181485A (ja) * 1986-01-09 1986-08-14 東海工業ミシン株式会社 刺しゆう縫ミシンにおける基布の移送方法
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JPH0212652U (enrdf_load_stackoverflow) * 1988-07-11 1990-01-26
JPH0788617B2 (ja) * 1988-11-18 1995-09-27 株式会社 バルダン 帽子の外周面に刺▲繍▼を施す為の刺▲繍▼ミシン
JPH01229860A (ja) * 1988-11-18 1989-09-13 Barudan Co Ltd 刺繍ミシン
DE19637866A1 (de) * 1996-09-17 1998-03-19 Zsk Stickmasch Gmbh Kappenhaltevorrichtung für eine Kappenstickmaschine
JP3743097B2 (ja) * 1997-02-25 2006-02-08 アイシン精機株式会社 刺繍機
JP2002210285A (ja) * 2001-01-15 2002-07-30 Barudan Co Ltd ミシン
JP2002360959A (ja) * 2001-06-04 2002-12-17 Barudan Co Ltd ミシンの制御方法
JP4042104B2 (ja) * 2003-01-22 2008-02-06 ヤマトミシン製造株式会社 ミシン
JP2005318925A (ja) * 2004-05-06 2005-11-17 Brother Ind Ltd 刺繍ミシン
JP4975366B2 (ja) * 2006-05-09 2012-07-11 株式会社バルダン 刺繍加工用長尺筒形枠
GB2509769A (en) * 2013-01-15 2014-07-16 Mpt Group Ltd Large area programmable sewing machine
CN110904587B (zh) * 2019-12-16 2020-10-13 福建永信数控科技股份有限公司 一种刺绣机的工作方法

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011008045A1 (de) 2011-01-01 2012-07-05 Pfaff Industriesysteme Und Maschinen Ag Näheinheit zum Aufnähen von Taschenzuschnitten

Also Published As

Publication number Publication date
JPS60162853A (ja) 1985-08-24
EP0150971A2 (en) 1985-08-07
DE3566130D1 (en) 1988-12-15
JPS6242066B2 (enrdf_load_stackoverflow) 1987-09-07
EP0150971A3 (en) 1985-08-21

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