EP0423292B1 - Profilleiste für eine warenbahn-ausbreitwalze - Google Patents

Profilleiste für eine warenbahn-ausbreitwalze Download PDF

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Publication number
EP0423292B1
EP0423292B1 EP90906944A EP90906944A EP0423292B1 EP 0423292 B1 EP0423292 B1 EP 0423292B1 EP 90906944 A EP90906944 A EP 90906944A EP 90906944 A EP90906944 A EP 90906944A EP 0423292 B1 EP0423292 B1 EP 0423292B1
Authority
EP
European Patent Office
Prior art keywords
web
profiled rod
intermediate support
base body
rod according
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
EP90906944A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP0423292A1 (de
Inventor
Heinrich Schmidt
Otto Lorenz
Werner Geyer
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.)
Erhardt and Leimer GmbH
Original Assignee
Erhardt and Leimer GmbH
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
Priority claimed from DE19893914766 external-priority patent/DE3914766C1/de
Application filed by Erhardt and Leimer GmbH filed Critical Erhardt and Leimer GmbH
Publication of EP0423292A1 publication Critical patent/EP0423292A1/de
Application granted granted Critical
Publication of EP0423292B1 publication Critical patent/EP0423292B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H23/00—Registering, tensioning, smoothing or guiding webs
    • B65H23/02—Registering, tensioning, smoothing or guiding webs transversely
    • B65H23/022—Registering, tensioning, smoothing or guiding webs transversely by tentering devices
    • B65H23/025—Registering, tensioning, smoothing or guiding webs transversely by tentering devices by rollers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H27/00—Special constructions, e.g. surface features, of feed or guide rollers for webs
    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06B—TREATING TEXTILE MATERIALS USING LIQUIDS, GASES OR VAPOURS
    • D06B23/00—Component parts, details, or accessories of apparatus or machines, specially adapted for the treating of textile materials, not restricted to a particular kind of apparatus, provided for in groups D06B1/00 - D06B21/00
    • D06B23/02—Rollers
    • D06B23/026—Rollers characterised by particular surface features
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/11—Details of cross-section or profile
    • B65H2404/111—Details of cross-section or profile shape
    • B65H2404/1119—Details of cross-section or profile shape with at least an axial cavity on the periphery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/11—Details of cross-section or profile
    • B65H2404/114—Built-up elements
    • B65H2404/1141—Built-up elements covering a part of the periphery
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/13—Details of longitudinal profile
    • B65H2404/131—Details of longitudinal profile shape
    • B65H2404/1316—Details of longitudinal profile shape stepped or grooved
    • B65H2404/13163—Details of longitudinal profile shape stepped or grooved in longitudinal direction
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2404/00—Parts for transporting or guiding the handled material
    • B65H2404/10—Rollers
    • B65H2404/18—Rollers composed of several layers

Definitions

  • the invention relates to a profile strip of the type specified in the preamble of claim 1.
  • a profile strip of this type known from DE-OS 24 00 741 consists of a lamellar body made of aluminum, which is provided with an elastomeric surface layer.
  • the production of the two parts of the profile strip is complex.
  • the application of the surface layer requires extraordinary care and is therefore time-consuming.
  • the surface layer can hardly be renewed, so that a worn profile strip must be replaced by a new one.
  • the surface layer tends to peel off especially under the forces exerted by the web.
  • a profile bar which consists of a C-shaped metal rail with claw-shaped bent-in legs and a support glued to the straight back.
  • the pad is a plastic adhesive slip in the form of a single-sided adhesive strip.
  • the edges of the pad must end at a distance from the edges of the back, because there the adhesive strength is insufficient and the pad can peel off.
  • the area usable for power transmission to the web is limited; the durability of the pad leaves something to be desired because the centrifugal force works on the pad. Attaching or replacing the pad for repairs is tedious. Additional adhesive is often used to increase the adhesive strength of the pad.
  • the invention has for its object to provide a profile strip of the type mentioned, which is durable despite the rough working conditions when spreading webs and is characterized by an inexpensive manufacture and easy assembly and repair options.
  • the intermediate carrier can be produced from a material that is very tight to the support.
  • the support can therefore no longer be detached from the intermediate support under the forces exerted by the web.
  • the support can also extend over the entire detachable width of the intermediate carrier.
  • the intermediate carrier together with the support can be a prefabricated component which can be produced practically endlessly inexpensively, then cut to the required length and pushed onto the base body as required.
  • the grip of the intermediate carrier on the base body is sufficient to reliably withstand the centrifugal forces on the one hand and the forces of the web on the other hand.
  • the clamp handle holds the intermediate carrier with the support securely on the base body even in the longitudinal direction when the web spreading roller is working.
  • the pretension is dimensioned such that it is easy to pull on the intermediate carrier, as is its rapid removal for repair purposes. Due to the simple, inexpensive manufacture of the intermediate carrier with its support, it can be thrown away when the support is worn and replaced with a new section. It is favorable that due to the clamp handle no consideration needs to be given to the material pairing between the intermediate carrier and the base body, so that the material of the intermediate carrier with regard to the cost-effective production and good connection to the support, the base body, however, with regard to the structural strength, the sliding properties and its corrosion resistance, each freely selectable during operation.
  • the clamp grip of the intermediate carrier on the base body which at the same time ensures a frictional connection and a positive fit, ensures that the intermediate carrier with the support under the centrifugal forces and also the forces of the web can no longer be detached from the base body, but on the other hand the intermediate carrier for assembly and repair can be deducted from the base body by replacing it.
  • the frictional engagement of the clamp handle acts predominantly in the longitudinal direction of the base body and prevents the reaction forces occurring in the longitudinal direction of the profile strip from displacing the intermediate carrier on the base body when the web of material spreads out.
  • the clamp handle saves additional security measures between the both parts.
  • the measures of claim 3 are advantageous.
  • the three materials in the combined composition offer the best prerequisites in terms of effectiveness.
  • the feature of claim 4 is also important for the cost-effective production.
  • Such continuous profile strands in particular extruded profiles, are inexpensive and can be produced to size, are easy to store and ship. Cutting the required sections to length does not require any special tools and can also be carried out directly at the location of the profile strip.
  • the shape accuracy of the modern extrusion process ensures that the components fit together correctly at all times and that the clamp is firmly seated, which can only be removed by arbitrary removal.
  • these two components are even made together in an extruded profile, which is useful because of the good connectivity between hard PVC and soft PVC.
  • fix the support separately on the intermediate carrier by gluing.
  • the intermediate carrier takes over the holding function for the support without being necessary for the dimensional stability and the sliding property of the profile strip during operation. Therefore, the choice of material for the intermediate carrier can be based on an easy to manufacture, as strong and durable connection to the support.
  • the edition is reduced to one or more contact strips, each of which grips the web and pulls it into the desired position.
  • the contact strip can be designed on its free upper side only with a view to optimum grip on the web. Since the contact strip is attached to the intermediate carrier, which is preferably made of plastic, it is not subject to the restrictions that arise when elastic plastic material is connected to a relatively hard material, for example the metallic base body. Also for critical web qualities an optimal grip can be achieved from the profile strip to the web, whereby optimal grip for particularly sensitive webs also means a particularly gentle but effective power transmission.
  • the web does not have to come into contact with the free top of the intermediate carrier itself, so that the previously disturbing adhesive residues on the intermediate carrier no longer have a disruptive influence.
  • the additional measure of the contact strip on the one hand optimizes the grip, on the other hand the manufacture of the profile strip or the intermediate carrier with the contact strip can be simplified.
  • the positive connection between the contact strip and the intermediate carrier helps in the transmission of the torque.
  • the contact strip can be attached in the longitudinal groove with an adhesive that remains elastic after setting, which prevents hard adhesive contamination on the free surfaces.
  • the groove prevents glue from escaping at all.
  • the groove edge provides good support for the inserted contact strip.
  • the embodiment according to claim 7 has also proven to be very suitable, in which the contact strip is formed in one piece with the intermediate carrier and holds the web so far from the free upper side of the intermediate carrier that the web no longer comes into contact with the other components . It is favorable to provide the above contact strip with a surface structure. This could be done with a trailing knurled wheel during manufacture.
  • This cross-sectional shape can be realized with simple shapes.
  • the converging holding legs ensure that the profile strip sits well in the spreader roller with always low resistance to displacement.
  • the clamp grip of the legs offers a self-locking, firm fit, with sufficient tolerance, which is not least achieved by the non-binding bows.
  • the legs adapt approximately to the slope of the side wall from the web.
  • the webs have an approximately prism-shaped cross section, which is very easy to master in terms of production technology. With its convex curvature and in cooperation with the straight underside of the profile strip, the back ensures the desired linear support area. With slight tilting movements, which the profile strip can certainly exert on the web, the support area is shifted in the circumferential direction on the back of the web. This is irrelevant to the effective transfer of the spreading forces to the web; in view of the fact that the axial adjustment is always easy to move, this is a desirable effect.
  • the converging holding legs are supported by the centrifugal force on the converging flanks, provided that the profile strip is not pressed by the contact pressure of the web anyway in the linear support on the back of the web.
  • the selected cross-sectional shape is also favorable in terms of production technology, the assembly and disassembly of the profiled strips is particularly simple because they only have to be pushed or pulled off in the axial direction.
  • the feature of claim 11 is advantageous with regard to a good fit of the intermediate carrier on the base body and the displacement of the intermediate carrier on the base body that can be carried out with justifiable forces for mounting or repairing the profile strip.
  • the intermediate carrier When the intermediate carrier is pushed on, the strength of the convergence of its clamp legs is adapted by elastic deformation to the convergence of the holding legs of the base body and at the same time the desired adaptation is achieved.
  • a profile strip 1 is seated on an undercut web 2 of a support ring 3 of a web spreading roller (not shown) which is approximately trapezoidal in cross section.
  • the profile strip 1 has the shape indicated in FIG. 2 in a plan view.
  • the jacket of the spreader roller is formed by a plurality of profile strips 1 lying closely next to one another, which overlap in the central region of the spreader roller with finger-like end parts 27 and are pulled apart and pushed together again in the axial direction with each revolution of the spreader roller.
  • the web 29 on the spreading roller is thereby spread out. This is a common principle.
  • several support rings 3 are placed one behind the other in the spreading roller in the axial direction with aligned webs 2 in order to guide the profiled strips 1.
  • the profile strip 1 consists of an approximately C-shaped base body 4 in cross section, further of an intermediate carrier 5 pushed onto the base body 4 in the longitudinal direction with approximately the same, only slightly wider cross section than the base body 4, and one on an outside 13 of the Intermediate carrier 4 attached, frictional and elastic pad 6.
  • the base body 4 is e.g. made of stainless steel and is a cut section of an endless profile strand, expediently an extruded profile. It has a flat, straight back part 9 in cross-section, from which struts 8 holding legs 7 converging over arches 8 on both sides. The angle enclosed between each holding leg 7 and the back part 9 is approximately 57 ° in the embodiment shown.
  • the intermediate carrier 5 is e.g. from a section of an endless extruded profile made of hard PVC. It has a straight transverse web 12 in cross-section, from which struts 11 which converge over bends 11.
  • the clamp legs 10 are pressed against the holding legs 7 from the outside with pretension.
  • the broken line 25 indicates that the clamp leg 10 forms an angle ⁇ with the crossbar 12 when the intermediate carrier 5 is removed, which angle is smaller than the angle ⁇ .
  • the greatest width of the intermediate carrier 5 is indicated by B.
  • the support 6 has a convexly curved upper side 14, the radius of curvature expediently having the center of the axis of the spreading roller, not shown.
  • the support 6 ends on both edges immediately in front of the greatest width B of the intermediate carrier 5 with wedge-shaped tapered edge lips 15.
  • the edge lips 15 are flattened on the outside in the area 16.
  • a crescent-shaped free space 17 remains between each arch 11 of the intermediate support 5 and the adjacent arch 8 of the main body 4, which ensures a secure clamp fit of the intermediate support 5 on the main body 4.
  • the intermediate carrier 5 has only a line contact with the holding web 2.
  • the support 6 can be made in one piece with the intermediate carrier 5, for example be extruded.
  • the pad 6 suitably consists of soft PVC with a Shore hardness of approximately 60 °. But it is also conceivable to stick the pad 6 on the intermediate carrier 5. Since hard PVC and soft PVC can be connected to each other very firmly, the pad 6 has a high resistance to detachment.
  • the connection zone between the support 6 and the intermediate carrier 5 is indicated by 24.
  • the web 2 of the support ring 3 has a convexly curved back 18 about the axis of the spreader roller, not shown, on which the base body 4 rests with line contact 19, so that there are free spaces between the shoulders 22 in cross section of the web 2 and the base body 4 23 arise.
  • narrow gaps s are kept free between the inner sides of the holding legs 7 and the side walls 20 of the web 2.
  • a recess 21 adjoins the side walls 20, which leads to the adjacent side wall 20, not shown, of the next web 2. This configuration allows the profiled strips 1 to be placed very close together, so that they may even touch with their arches 11 during operation.
  • Fig. 2 it is indicated at 26 how each profile strip 1 is coupled with an axial displacement drive.
  • the intermediate support 5 connected to the support 6 is pushed onto the base body 4 in the longitudinal direction thereof, so that it is fixed with a clamp grip on the holding legs 7 and the back 28 of the base body 4.
  • This clamp grip prevents the intermediate carrier 5 from lifting too far from the base body 4 under centrifugal forces.
  • the clamp handle causes the intermediate carrier 5 to be held in the longitudinal direction of the profile strip I, which ensures the correct transmission of the spreading forces to the web 29.
  • the clamp grip allows the intermediate carrier 5 with the support 6 to be pushed on with a reasonable amount of force and to be removed again for replacement.
  • the intermediate carrier 5 is advantageously cut with the support 6 from an endless extruded profile in the length just required.
  • FIG. 3 shows a profile strip 1 without a base body 4.
  • a support made of elastic plastic material with a convex top is attached by gluing, which extends to the lateral shoulders 32 of the intermediate carrier 5.
  • a single wide longitudinal groove 30 is formed in the plastic support 6, into which a contact strip K is glued.
  • the strenght s of the contact strip K is selected such that the longitudinal edges of the contact strip K, designated 33, protrude slightly beyond the support 6.
  • the longitudinal grooves 30 are already formed in the intermediate carrier 5 and are arranged in such a way that the distance between the grooves 30 corresponds approximately to the groove width B.
  • a contact strip K made of flexible material is inserted in each longitudinal groove 30 and fastened with adhesive.
  • This embodiment saves the elastic support 6 according to FIG. 1 and replaces it with the inserted contact strips K.
  • the side edges 35 of the contact strips K are supported on the groove edges 36.
  • the adhesive therefore only needs to be provided centrally under the contact strip K, so that it does not swell out at the side edges.
  • the free upper sides 14 of the contact strips K protrude from the surface of the intermediate carrier 5 and they are designed with regard to optimum grip for the web 29, e.g. profiled or sticky or provided with a textile structure.
  • the contact strips K can expediently consist of a carrier material with a mohair layer on the top.
  • the intermediate body 5 sits with its clamp legs 10 on the base body 4 and covers the back part 9 and its holding leg 7.
  • the contact strips K are formed in one piece with the intermediate carrier 5, for example by extrusion.
  • the free top of the contact strips can in turn be profiled or sticky or provided with a textile structure.
  • the free upper sides 14 of the two contact strips K are either flat and roof-shaped in relation to one another or slightly cambered.
  • the web W is slightly drawn into the intermediate space 34 and also on both sides of the contact strips when running over the profile strip, as a result of which the grip on the free upper sides 14 is increased.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Registering, Tensioning, Guiding Webs, And Rollers Therefor (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Slide Fasteners, Snap Fasteners, And Hook Fasteners (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Connection Of Plates (AREA)
  • Clamps And Clips (AREA)
  • Coating Apparatus (AREA)
  • Folding Of Thin Sheet-Like Materials, Special Discharging Devices, And Others (AREA)
EP90906944A 1989-05-05 1990-04-27 Profilleiste für eine warenbahn-ausbreitwalze Expired - Lifetime EP0423292B1 (de)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE3914766 1989-05-05
DE19893914766 DE3914766C1 (en) 1989-05-05 1989-05-05 Profile ledge for material spreading roll - has C-shaped base body shifting in longitudinal roll direction having holding arms fastenable to support rings, etc.
DE4008220A DE4008220A1 (de) 1989-05-05 1990-03-15 Profilleiste fuer eine warenbahn-ausbreitwalze
DE4008220 1990-03-15

Publications (2)

Publication Number Publication Date
EP0423292A1 EP0423292A1 (de) 1991-04-24
EP0423292B1 true EP0423292B1 (de) 1993-12-22

Family

ID=25880592

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90906944A Expired - Lifetime EP0423292B1 (de) 1989-05-05 1990-04-27 Profilleiste für eine warenbahn-ausbreitwalze

Country Status (9)

Country Link
US (1) US5307973A (pt)
EP (1) EP0423292B1 (pt)
JP (1) JPH0629114B2 (pt)
BR (1) BR9006759A (pt)
DD (1) DD299598A7 (pt)
DE (2) DE4008220A1 (pt)
ES (1) ES2047929T3 (pt)
PT (1) PT93963A (pt)
WO (1) WO1990013503A1 (pt)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108531996A (zh) * 2018-05-10 2018-09-14 潘晨馨 一种小棉兜电动撑架

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Publication number Priority date Publication date Assignee Title
DE19506600A1 (de) * 1995-02-24 1996-08-29 Krupp Polysius Ag Walze, Verfahren zur Herstellung einer Walze sowie Gutbettwalzenmühle
EP1226940A1 (de) * 2000-12-27 2002-07-31 OFFICINE MECCANICHE GIOVANNI CERUTTI S.p.A. Rolle für eine Trockeneinrichtung einer Rotationsdruckmaschine
GB2385584A (en) * 2002-02-22 2003-08-27 Advanced Silicones Ltd Roller for web feed mechanism
US7415881B2 (en) * 2004-08-19 2008-08-26 Fife Corporation Ultrasonic sensor system for web-guiding apparatus
US20060268290A1 (en) * 2005-05-25 2006-11-30 Thieme Gmbh & Co. Kg Printing table for flatbed printers
US20080184691A1 (en) * 2007-02-01 2008-08-07 Horchler Fred M Bale forming roller
EP2343258B1 (de) * 2010-01-08 2015-09-30 Texmag GmbH Vertriebsgesellschaft Vorrichtung zum Regeln des seitlichen Versetzens mindestens einer Materialbahn mit Lattensicherungsmittel
US9415963B2 (en) 2013-01-30 2016-08-16 Fife Corporation Sensor controller for interpreting natural interaction sensor for web handling
ITMI20130354U1 (it) * 2013-10-15 2015-04-16 Meccaniche Crizaf S P A Costruzioni Rullo motore per nastro trasportatore dotato di elevato attrito nei confronti del nastro
US9682838B2 (en) * 2015-03-19 2017-06-20 Pearl Technologies, Inc. Stationary idler roll with low coefficient of friction
IT201600104608A1 (it) * 2016-10-18 2018-04-18 Arioli S P A Aspo per macchine per il trattamento di tessuti e macchina comprendente detto aspo
DE102017105845A1 (de) * 2017-03-17 2018-09-20 Wincor Nixdorf International Gmbh Vorrichtung zum Ausrichten von Wertscheinen
DE102017012009A1 (de) * 2017-12-22 2019-06-27 Texmag Gmbh Vertriebsgesellschaft Segmentwalze

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Publication number Priority date Publication date Assignee Title
DE2400741A1 (de) * 1973-02-02 1974-08-22 Avery Products Corp Bandfuehrungsvorrichtung

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US2339557A (en) * 1942-01-23 1944-01-18 Firestone Tire & Rubber Co Drying apparatus
GB556318A (en) * 1942-03-27 1943-09-29 Courtaulds Ltd Improvements in and relating to reels
BE497319A (pt) * 1949-08-09
US2850853A (en) * 1955-06-16 1958-09-09 Joseph A Simendinger Contact wheels
US2977725A (en) * 1957-05-13 1961-04-04 Joseph A Simendinger Contact wheels
US3095131A (en) * 1959-07-06 1963-06-25 Mount Hope Machinery Ltd Web guiding method and apparatus
GB1022114A (en) * 1964-03-02 1966-03-09 Singer Cobble Ltd Improvements relating to rollers for use in the conveyance of endless webs
DE2825320C2 (de) * 1978-06-09 1982-02-04 Erhardt & Leimer Kg, 8900 Augsburg Vorrichtung zum Breiten und Führen einer Warenbahn
US4449659A (en) * 1982-06-02 1984-05-22 Isamu Tuchida Roller for adjusting the width of a travelling web
DE3518568C1 (de) * 1985-05-23 1986-11-27 Erhardt & Leimer GmbH, 8900 Augsburg Vorrichtung zum Breiten einer Materialbahn
DE3914766C1 (en) * 1989-05-05 1990-07-12 Erhardt + Leimer Gmbh, 8900 Augsburg, De Profile ledge for material spreading roll - has C-shaped base body shifting in longitudinal roll direction having holding arms fastenable to support rings, etc.

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2400741A1 (de) * 1973-02-02 1974-08-22 Avery Products Corp Bandfuehrungsvorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN108531996A (zh) * 2018-05-10 2018-09-14 潘晨馨 一种小棉兜电动撑架

Also Published As

Publication number Publication date
US5307973A (en) 1994-05-03
BR9006759A (pt) 1991-08-06
DE4008220C2 (pt) 1993-06-17
DD299598A7 (de) 1992-04-30
DE4008220A1 (de) 1991-09-26
JPH0629114B2 (ja) 1994-04-20
PT93963A (pt) 1991-01-08
ES2047929T3 (es) 1994-03-01
DE59003960D1 (de) 1994-02-03
JPH03503275A (ja) 1991-07-25
EP0423292A1 (de) 1991-04-24
WO1990013503A1 (de) 1990-11-15

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