EP0076725A1 - Screw fastening device - Google Patents

Screw fastening device Download PDF

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Publication number
EP0076725A1
EP0076725A1 EP82401725A EP82401725A EP0076725A1 EP 0076725 A1 EP0076725 A1 EP 0076725A1 EP 82401725 A EP82401725 A EP 82401725A EP 82401725 A EP82401725 A EP 82401725A EP 0076725 A1 EP0076725 A1 EP 0076725A1
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EP
European Patent Office
Prior art keywords
branches
staple
washer
clip
central
Prior art date
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Granted
Application number
EP82401725A
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German (de)
French (fr)
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EP0076725B1 (en
Inventor
Gérard Cohen Bacri
Maurice Cheron
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Airbus Group SAS
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Airbus Group SAS
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Publication of EP0076725A1 publication Critical patent/EP0076725A1/en
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Publication of EP0076725B1 publication Critical patent/EP0076725B1/en
Expired legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
    • B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
    • B25B31/00—Hand tools for applying fasteners
    • B25B31/005—Hand tools for applying fasteners for temporarily connecting sheets before or during assembly operations

Definitions

  • the present invention relates to screw pinning staples as encountered in the aeronautical industry and it relates, in particular, to the particularities of these staples capable of making them more efficient.
  • inexpensive charged plastic materials representing good serial molding properties
  • plastics have a low mechanical resistance, much lower than metals, which has a number of drawbacks.
  • the invention proposes, in a pinning staple, a particular connection mode between a lower external plastic part and its corresponding upper external metal part.
  • connection mode is ensured by a special thread which allows the axial fitting by pressure of the metal hexagon part in the plastic part which has the advantage of simplifying the assembly and possibly automating it while allowing a disassembly or a subsequent reassembly for the purpose, for example, of eliminating rubbery interposition products or else of replacing damaged staple parts.
  • the invention also proposes an original method of anchoring the spacer of the staple branches which follows from the particular mode of connection of the two parts which has just been mentioned above.
  • a screw pinning staple as shown, necessarily includes a pair of staple branches (1 and 2) a branch spacer (3), the whole being located in the hole (4) practical in the assembly ( 5), while a body identified (6) as a whole, is supported on the assembly surface (7).
  • a spring (8) concentric with a marked rod (9) as a whole, while a support washer (10) serves as a seat for a nut (11) stopped, in abutment, by an end cap (12).
  • the rod (9) has, on one side, a partial smoothing at the bottom of the thread (9 a) which allows the nut (11) to turn “crazy” and, on the other hand, a hexagonal part (9 b) which slides longitudinally in an imprint longitudinal female (6 c) corresponding practiced in the body (6).
  • This rod (9) is terminated by a part (9 C) which, by stamping, encloses the end parts of the branches (1 and 2) which themselves respect the radial positioning of the spacer (3) located between- they.
  • the body (6) comprises a metallic upper part (6c) comprising, on one side, a hexagonal external imprint and, on the other side, an internal recess whose role will be explained below.
  • connection mode of the invention which is identified (13) results from a male thread imprint known as "artillery" made in the middle zone (6a), force-fitted axially into the plastic sleeve constituted by the part (6 b).
  • thread flanks which are also helical, are substantially perpendicular to the axis for the faces opposite to the penetration and inclined in the manner of the usual thread flanks for what is on the side of penetration.
  • the hexagonal part (6 a) can be put in place by simple axial penetration pressure in the part (6 b) while it can be easily removed by conventional unscrewing later.
  • the maintenance in position of the spacer (3) results, in a very simple manner, from the positioning of the parts (6 a) and (6 b) by placing a first washer (14) clamped by these parts, then by placing the branches (3 a and 3 b) of said spacer between said washer (14) and another washer (15) located in line with the recess (16) formed in the part (6 a) so that the immobilization is thus acquired from the establishment of said two parts.
  • the clip is immobilized in rotation by a screwdriver nose (not shown) by enclosing the hexagonal imprint of the part (6a).
  • the screwing is carried out up to a preset torque compressing the spring (8) which ensures the tightening of the assembly (5) under the effect of its energy return (the tightening is necessary by the fact of the presence of a polymerizable interposition product between the sheets constituting said assembly).
  • the invention proposes a pinning staple having improved conceptual properties allowing an increase in its mechanical qualities correlatively with a reduction in its manufacturing cost in particular as regards the nature of certain materials used as well as through its facilities own automated assembly.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bolts, Nuts, And Washers (AREA)
  • Clamps And Clips (AREA)
  • Hand Tools For Fitting Together And Separating, Or Other Hand Tools (AREA)
  • Connection Of Plates (AREA)
  • Portable Nailing Machines And Staplers (AREA)

Abstract

1. A pin staple with screw comprising an outer body (6) carrying a central rotatably locked shank (9), a spring (8) between said body and a nut (11) on a threaded portion of said central shank which is, moreover, narrower in its terminal portion, a pair of staple branches (1 and 2) crimped in the other terminal portion of said central shank, a spreader (3) lying between said staple branches and an application washer (10) of the nut upon the spring, said staple being characterized in that the outer body (6) comprises a lower portion of plastics material (6b) and an upper metallic portion (6a) having an outer hexagonal socket head (6a) and an inner recess (16) therein as well as a threading (13) of the artillery type in its central area, said upper portion (6a) being axially fitted according to its central threaded area into the lower plastics portion (6b), whereby such fitting causes - in addition to the securement of both portions (6a and 6b) - immobilization of the branches (1 and 2) and of the spreader (3) by bringing into application the branches (3a and 3b) of the spreader, first against a first washer (14) located between the end of the upper portion (6a) and the inner bottom of the lower portion (6b), then against a second washer (15) located against the inner recess (16) in the upper portion (6a).

Description

La présente invention a trait aux agrafes d'épinglage à vis telles que rencontrées dans l'industrie aéronautique et elle concerne, notamment, des particularités de ces agrafes propres à les rendre plus performantes.The present invention relates to screw pinning staples as encountered in the aeronautical industry and it relates, in particular, to the particularities of these staples capable of making them more efficient.

Les problèmes de prix de revient sont, on le sait, des facteurs importants dans la mesure où d'énormes quantités d'agrafes sont mises en oeuvre lors de la fabrication d'un avion de gros tonnage par exemple, ce qui touche d'une part, leur conception même, allant jusqu'à rendre leur montage totalement en automatique, d'autre part, la nature des matériaux utilisés pour leur élaboration.The cost problems are, as we know, important factors insofar as huge quantities of staples are used during the manufacture of a large aircraft for example, which affects a on the one hand, their very design, going so far as to make their assembly completely automatic, on the other hand, the nature of the materials used for their preparation.

C'est ainsi que des matériaux plastiques chargés, peu chers, représentant de bonnes propriétés de moulage en série, peuvent être mis en oeuvre en offrant, conjointement, un bon aspect externe et une coloration dans la masse permettant, de la sorte, de les identifier en vue d'effectuer une sélection visuelle de leurs diamètres et/ou, de leurs longueurs.Thus, inexpensive charged plastic materials, representing good serial molding properties, can be used by offering, jointly, a good external appearance and a coloring in the mass allowing, in this way, the identify in order to make a visual selection of their diameters and / or their lengths.

Malheureusement les matières plastiques ont une résistance mécanique faible, très inférieure aux métaux, ce qui présente un certain nombre d'inconvénients.Unfortunately plastics have a low mechanical resistance, much lower than metals, which has a number of drawbacks.

L'art antérieur enseignait bien, à travers le brevet français 1.433.662 ou les brevets US 2.365.787 - 2.345.817, un mode d'assemblage d'agrafes d'épinglage entre une partie de corps externe inférieure telle qu'en plastique et la partie de corps externe supérieure correspondante telle qu'en métal, mais le mode de liaison retenu, par emmanchement simple, n'est pas compatible avec les dispositifs nouveaux d'extraction automatique d'agrafes tels que ceux illustrés, par exemple, dans la demande de brevet européen ? 82 401 003-7 de la demanderesse qui s'appuient, conjointement, sur l'arrière de la partie six pans du corps de l'agrafe et sur la surface de l'assemblage, d'où des risques de décollement évidents des deux-dites parties.The prior art taught well, through French patent 1,433,662 or US patents 2,365,787 - 2,345,817, a method of assembling pinning staples between a lower external body part such as plastic and the corresponding upper external body part such as in metal, but the connection method adopted, by simple fitting, is not compatible with new devices for automatic extraction of staples such as those illustrated, for example, in the European patent application? 82 401 003-7 of the plaintiff who rely, jointly, on the rear of the hexagonal part of the body of the clip and on the surface of the assembly, hence the obvious risks of detachment of the two said parts.

Dans le but de remédier à ce premier inconvénient l'invention propose, dans une agrafe d'épinglage, un mode de liaison particulier entre une partie externe inférieure en plastique et sa partie externe supérieure correspondante en métal.In order to remedy this first drawback, the invention proposes, in a pinning staple, a particular connection mode between a lower external plastic part and its corresponding upper external metal part.

Ce mode de liaison est assuré par un filetage spécial qui autorise l'emmanchement axial par pression de la partie six pans métallique dans la partie plastique ce qui a pour avantage de simplifier le montage et de l'automatiser éventuellement tout en permettant un démontage ou un remontage ultérieur dans le but, par exemple, d'éliminer des produits d'interposition caoutchouteux ou bien de procéder au remplacement des parties d'agrafes détériorées.This connection mode is ensured by a special thread which allows the axial fitting by pressure of the metal hexagon part in the plastic part which has the advantage of simplifying the assembly and possibly automating it while allowing a disassembly or a subsequent reassembly for the purpose, for example, of eliminating rubbery interposition products or else of replacing damaged staple parts.

En deuxième lieu, l'invention propose également un mode d'ancrage original de l'écarteur des branches d'agrafes qui découle du mode de liaison particulier des deux parties qui vient d'être ci-dessus mentionné.Secondly, the invention also proposes an original method of anchoring the spacer of the staple branches which follows from the particular mode of connection of the two parts which has just been mentioned above.

L'invention va de toute manière être bien comprise dans la suite du texte dont la figure unique, faite en regard, représente, en coupe longitudinale partielle, une agrafe d'épinglage selon l'invention.The invention will in any case be well understood in the remainder of the text, the single figure of which, shown opposite, represents, in partial longitudinal section, a pinning staple according to the invention.

Une agrafe d'épinglage à vis, telle que représentée, comporte nécessairement une paire de branches d'agrafe (1 et 2) un écarteur de branches (3), le tout étant situé dans le trou (4) pratique dans l'assemblage (5), tandis qu'un corps repéré (6) dans son ensemble, est en appui sur la surface d'assemblage (7).A screw pinning staple, as shown, necessarily includes a pair of staple branches (1 and 2) a branch spacer (3), the whole being located in the hole (4) practical in the assembly ( 5), while a body identified (6) as a whole, is supported on the assembly surface (7).

Sur le corps (6) de l'agrafe est situé un ressort (8) concentrique à une tige repérée (9) dans son ensemble, tandis qu'une rondelle d'appui (10) sert d'assise à un écrou (11) arrêté, en butée, par un capuchon (12) d'extrémité.On the body (6) of the clip is located a spring (8) concentric with a marked rod (9) as a whole, while a support washer (10) serves as a seat for a nut (11) stopped, in abutment, by an end cap (12).

La tige (9) comporte, d'un côté, un lissage partiel à fond de filet (9 a) qui permet à l'écrou (11) de tourner "fou" et, d'un autre côté, une partie hexagonale (9 b) qui glisse longitudinalement dans une empreinte longitudinale femelle (6 c) correspondante pratiquée dans le corps (6).The rod (9) has, on one side, a partial smoothing at the bottom of the thread (9 a) which allows the nut (11) to turn "crazy" and, on the other hand, a hexagonal part (9 b) which slides longitudinally in an imprint longitudinal female (6 c) corresponding practiced in the body (6).

Cette tige (9) est terminée par une partie (9 C) qui, par matriçage, enserre les parties terminales des branches (1 et 2) qui respectent, elles-mêmes, le positionnement radial de l'écarteur (3) situé entre-elles.This rod (9) is terminated by a part (9 C) which, by stamping, encloses the end parts of the branches (1 and 2) which themselves respect the radial positioning of the spacer (3) located between- they.

Le corps (6) comprend une partie supérieure (6 c) métallique comportant, d'un côté, une empreinte externe hexagonale et, de l'autre côté, un décrochement interne dont le rôle sera explicité par la suite.The body (6) comprises a metallic upper part (6c) comprising, on one side, a hexagonal external imprint and, on the other side, an internal recess whose role will be explained below.

Le mode de liaison particulier à l'invention qui est repéré (13) résulte d'une empreinte de filetage mâle dite"d'artillerie" pratiquée dans la zone médiane (6 a), emmanchée à force axialement dans le manchon plastique constitué par la partie (6 b).The particular connection mode of the invention which is identified (13) results from a male thread imprint known as "artillery" made in the middle zone (6a), force-fitted axially into the plastic sleeve constituted by the part (6 b).

La caractéristique essentielle d'un tel type de filetage réside en ce que les flancs de filet, par ailleurs hélicoïdal, sont sensiblement perpendiculaires à l'axe pour les faces opposées à la pénétration et inclinés à la manière des flancs de filets habituels pour ce qui est du côté de la pénétration.The essential characteristic of such a thread type is that the thread flanks, which are also helical, are substantially perpendicular to the axis for the faces opposite to the penetration and inclined in the manner of the usual thread flanks for what is on the side of penetration.

De la sorte, la partie hexagonale (6 a) peut être mise en place par simple pression de pénétration axiale dans la partie (6 b) tandis qu'elle peut être enlevée aisément par dévissage classique ultérieurement.In this way, the hexagonal part (6 a) can be put in place by simple axial penetration pressure in the part (6 b) while it can be easily removed by conventional unscrewing later.

Le maintien en position de l'écarteur (3) résulte, d'une manière très simple, de la mise en position des parties (6 a) et (6 b) en disposant une première rondelle (14) en enserrement par ces parties, puis en plaçant les branches (3 a et 3 b) dudit écarteur entre ladite rondelle (14) et une autre rondelle (15) située au droit du décrochement (16) pratiqué dans la partie (6 a) de telle sorte que l'immobilisation se trouve ainsi acquise dès mise en place desdites deux parties.The maintenance in position of the spacer (3) results, in a very simple manner, from the positioning of the parts (6 a) and (6 b) by placing a first washer (14) clamped by these parts, then by placing the branches (3 a and 3 b) of said spacer between said washer (14) and another washer (15) located in line with the recess (16) formed in the part (6 a) so that the immobilization is thus acquired from the establishment of said two parts.

Il peut être maintenant rappelé comment la présente agrafe est mise en oeuvre d'une manière identique aux agrafes connues sans en présenter, toutefois, les inconvénients.It can now be recalled how this staple is implemented in a manner identical to known staples without having, however, the disadvantages.

La mise en place dans le trou (4) est effectuée, écrou (11) totalement dévissé et tige (9) poussée au maximum vers le bas (position correspondant sensiblement à la figure 1).The positioning in the hole (4) is carried out, nut (11) completely unscrewed and rod (9) pushed as far as possible downwards (position corresponding substantially to FIG. 1).

L'agrafe est immobilisée en rotation par un nez de visseuse (non représenté) en enserrant l'empreinte hexagonale de la partie (6 a).The clip is immobilized in rotation by a screwdriver nose (not shown) by enclosing the hexagonal imprint of the part (6a).

Lorsque l'écrou (11) est vissé par la partie interne du nez de visseuse (non représenté) la tige (9) remonte, produisant le resserrage de l'assemblage (5) grâce aux extrémités (1a et 2a) des branches (1 et 2) a a écartées par l'écarteur (3).When the nut (11) is screwed through the internal part of the screwdriver nose (not shown) the rod (9) rises, producing the tightening of the assembly (5) thanks to the ends (1a and 2a) of the branches (1 and 2) aa separated by the retractor (3).

Le vissage s'effectue jusqu'à un couple pré- réglé mettant en compression le ressort (8) qui assure le resserrage de l'assemblage (5) sous l'effet de sa restitution d'énergie (le resserrage est nécessaire par le fait de la présence d'un produit d'interposition polymérisable entre les tôles constituant ledit assemblage).The screwing is carried out up to a preset torque compressing the spring (8) which ensures the tightening of the assembly (5) under the effect of its energy return (the tightening is necessary by the fact of the presence of a polymerizable interposition product between the sheets constituting said assembly).

L'extraction de l'agrafe du trou (4) après polymérisation s'effectue, selon la manoeuvre inverse, par dévissage de l'écrou (11) d'où une poussée sur la tige (9) vers l'assemblage et une sortie de l'agrafe, par prise d'appui en (17) sous la partie hexagonale de la partie (6 a) conjugée avantageusement avec une autre prise d'appui sur la surface (7) de l'assemblage.The extraction of the clip from the hole (4) after polymerization is carried out, according to the reverse maneuver, by unscrewing the nut (11) from where a push on the rod (9) towards the assembly and an outlet of the staple, by support socket at (17) under the hexagonal part of the part (6a) advantageously combined with another support socket on the surface (7) of the assembly.

Dans ces mouvements, la rotation de la tige (9) est empêchée par la présence de l'empreinte hexagonale (6 c) recevant le six pans (9 b) ce qui entraîne corrélativement l'immobilisation en rotation des branches (1 et 2), donc de l'écarteur (3).In these movements, the rotation of the rod (9) is prevented by the presence of the hexagonal imprint (6 c) receiving the hexagon (9 b) which correlatively causes the immobilization in rotation of the branches (1 and 2) , therefore of the retractor (3).

En résumé, l'invention propose une agrafe d'épinglage possédant des propriétés conceptuelles améliorées permettant un accroissement de ses qualités mécaniques corrélativement avec une diminution de son coût de fabrication notamment en ce qui concerne la nature de certains matériaux utilisés ainsi qu'à travers ses facilités propres de montage automatisé.In summary, the invention proposes a pinning staple having improved conceptual properties allowing an increase in its mechanical qualities correlatively with a reduction in its manufacturing cost in particular as regards the nature of certain materials used as well as through its facilities own automated assembly.

La nature des matériaux mise en oeuvre est avantageusement constituée, pour la partie supérieure (6 a), par un acier protégé par voie électrolytique et, pour la partie inférieure (6 b) par la matière plastique chargée connue dans le commerce sous la dénomination de "RILSAN".The nature of the materials used is advantageously constituted, for the upper part (6 a), by a steel protected by electrolytic means and, for the lower part (6 b) by the charged plastic material known in the trade under the name of "RILSAN".

Il va de soi que la présente invention n'a été décrite et représentée qu'à titre d'exemple préférentiel et qu'on pourra apporter des équivalences techniques dans ses éléments constitutifs sans pour autant sortir du cadre de ladite invention.It goes without saying that the present invention has only been described and shown as a preferred example and that technical equivalences may be made in its constituent elements without going beyond the ambit of said invention.

Claims (4)

1. Agrafe d'épinglage à vis comprenant un corps extérieur (6) portant une tige centrale (9) immobilisée en rotation, un ressort (8) entre ledit corps et un écrou (11) sur une partie filetée de ladite tige centrale par ailleurs retrécie en sa partie terminale, une paire de branches d'agrafe (1 et 2) serties dans l'autre partie terminale de ladite tige centrale, un écarteur (3) situé entre lesdites branches d'agrafes et une rondelle d'appui (10) de l'écrou sur le ressort, ladite agrafe étant caractérisée en ce que le corps extérieur (6) comporte une partie inférieure en matière plastique (6 b) et une partie supérieure métallique (6 a) possédant une empreinte externe hexagonale (6 a) et un décrochement interne (16) ainsi qu'un filetage (13) de type "artillerie" dans sa zone médiane, ladite partie supérieure (6 a) étant emmanchée axialement, selon sa région médiane filetée, dans la partie inférieure plastique (6 b) ce qui fait que cet emmanchement produit, outre l'assujettissement des deux parties (6 a et 6 b), l'immobilisation des branches (1 et 2) et de l'écarteur (3) par mise en appui des branches (3a) et (3b) de l'écarteur, d'abord contre une première rondelle (14) située entre l'extrémité de la partie supérieure (6 a) et le fond interne de la partie inférieure (6 b), puis contre une deuxième rondelle (15) située contre le décrochement interne (16) de la partie supérieure (6 A).1. Screw pinning clip comprising an outer body (6) carrying a central rod (9) immobilized in rotation, a spring (8) between said body and a nut (11) on a threaded part of said central rod otherwise narrowed in its end part, a pair of staple branches (1 and 2) crimped in the other end part of said central rod, a spacer (3) located between said staple branches and a support washer (10 ) of the nut on the spring, said clip being characterized in that the external body (6) comprises a lower plastic part (6 b) and a metallic upper part (6 a) having a hexagonal external imprint (6 a ) and an internal recess (16) as well as a thread (13) of the "artillery" type in its median zone, said upper part (6 a) being fitted axially, according to its threaded median region, in the lower plastic part (6 b) what makes this fitting produce, in addition to the subjugation of the two parts (6 a and 6 b), the immobilization of the branches (1 and 2) and of the retractor (3) by pressing the branches (3a) and (3b) of the retractor, first against a first washer (14) located between the end of the upper part (6 a) and the internal bottom of the lower part (6 b ), then against a second washer (15) located against the internal recess (16) of the part upper (6 A). 2. Agrafe d'épinglage à vis selon la revendication 1 caractérisée en ce que la partie supérieure (6 a) métallique est en acier protégé par voie électrolytique.2. Screw pinning clip according to claim 1 characterized in that the upper metal part (6a) is made of electrolytically protected steel. 3. Agrafe d'épinglage à vis selon la revendication 1 caractérisée en ce que la partie inférieure plastique (6 b) est en "RILSAN" chargé.3. Screw pinning clip according to claim 1 characterized in that the plastic lower part (6b) is in "RILSAN" loaded. 4. Agrafe d'épinglage à vis selon les revendications 1 et 3 caractérisée en ce que la matière plastique de la partie inférieure (6 a) est colorée pour répondre à un code donné de diamètre d'agrafe et (ou) de longueur d'agrafe.4. Screw pinning clip according to claims 1 and 3 characterized in that the plastic of the lower part (6a) is colored to meet a given code of clip diameter and / or length of clip.
EP82401725A 1981-09-29 1982-09-23 Screw fastening device Expired EP0076725B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR8118309A FR2513708A1 (en) 1981-09-29 1981-09-29 SCREW JOINTING SCREW
FR8118309 1981-09-29

Publications (2)

Publication Number Publication Date
EP0076725A1 true EP0076725A1 (en) 1983-04-13
EP0076725B1 EP0076725B1 (en) 1985-03-20

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Application Number Title Priority Date Filing Date
EP82401725A Expired EP0076725B1 (en) 1981-09-29 1982-09-23 Screw fastening device

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EP (1) EP0076725B1 (en)
JP (1) JPS5866674A (en)
CA (1) CA1204309A (en)
DE (1) DE3262690D1 (en)
FR (1) FR2513708A1 (en)
IL (1) IL66859A (en)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2919691B1 (en) 2007-08-03 2009-10-30 Lisi Aerospace Soc Par Actions SCRAPPING STAPLER AND USE THEREOF FOR TEMPORARILY FIXING A DRILLING GRID ON ASSEMBLED ELEMENTS
FR2927675B1 (en) 2008-02-19 2013-02-08 Lisi Aerospace PROVISIONAL AND REUSABLE FIXING DEVICE FOR THE PRE-ASSEMBLY OF AT LEAST TWO STRUCTURAL ELEMENTS PRE-PRINTED.
CN106181862A (en) * 2016-08-18 2016-12-07 无锡市中捷减震器有限公司 Riveting pin assembling jig

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1433662A (en) * 1965-03-18 1966-04-01 Bayswater Motors Ltd Sheet clamping device
FR1491450A (en) * 1966-06-28 1967-08-11 Improvements made to screwing or unscrewing mandrels, in particular for fitting and removing sheet metal clips
FR2181216A5 (en) * 1972-04-21 1973-11-30 Bouzounie Lucien

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1433662A (en) * 1965-03-18 1966-04-01 Bayswater Motors Ltd Sheet clamping device
FR1491450A (en) * 1966-06-28 1967-08-11 Improvements made to screwing or unscrewing mandrels, in particular for fitting and removing sheet metal clips
FR2181216A5 (en) * 1972-04-21 1973-11-30 Bouzounie Lucien

Also Published As

Publication number Publication date
FR2513708A1 (en) 1983-04-01
IL66859A (en) 1986-12-31
CA1204309A (en) 1986-05-13
JPS5866674A (en) 1983-04-20
FR2513708B1 (en) 1984-01-06
IL66859A0 (en) 1982-12-31
DE3262690D1 (en) 1985-04-25
EP0076725B1 (en) 1985-03-20

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