BE1018172A3 - Clamping device, has screw head fixed on small cylindrical hole by screwing tool, flat shoulder fixed in surface of screw head and connected with back side of screw head, where hole is formed in area formed above screw - Google Patents

Clamping device, has screw head fixed on small cylindrical hole by screwing tool, flat shoulder fixed in surface of screw head and connected with back side of screw head, where hole is formed in area formed above screw Download PDF

Info

Publication number
BE1018172A3
BE1018172A3 BE2008/0309A BE200800309A BE1018172A3 BE 1018172 A3 BE1018172 A3 BE 1018172A3 BE 2008/0309 A BE2008/0309 A BE 2008/0309A BE 200800309 A BE200800309 A BE 200800309A BE 1018172 A3 BE1018172 A3 BE 1018172A3
Authority
BE
Belgium
Prior art keywords
screw
head
screw head
fixed
hole
Prior art date
Application number
BE2008/0309A
Other languages
French (fr)
Original Assignee
Lefebvre Guy
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 Lefebvre Guy filed Critical Lefebvre Guy
Priority to BE2008/0309A priority Critical patent/BE1018172A3/en
Application granted granted Critical
Publication of BE1018172A3 publication Critical patent/BE1018172A3/en

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B31/00—Screwed connections specially modified in view of tensile load; Break-bolts
    • F16B31/02—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load
    • F16B31/021—Screwed connections specially modified in view of tensile load; Break-bolts for indicating the attainment of a particular tensile load or limiting tensile load by means of a frangible part
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B35/00—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws
    • F16B35/04—Screw-bolts; Stay-bolts; Screw-threaded studs; Screws; Set screws with specially-shaped head or shaft in order to fix the bolt on or in an object
    • F16B35/041—Specially-shaped shafts
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B2200/00—Constructional details of connections not covered for in other groups of this subclass
    • F16B2200/79—Friction-reducing coatings
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16B—DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS OR MACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS, CLIPS OR WEDGES; JOINTS OR JOINTING
    • F16B43/00—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts
    • F16B43/002—Washers or equivalent devices; Other devices for supporting bolt-heads or nuts with special provisions for reducing friction

Abstract

The device has a screw screwed in a head clamp, and a screw head (1) fixed on a small cylindrical hole by a screwing tool, where the small cylindrical hole is formed in an area (2) formed above the screw. A flat shoulder is fixed in a surface of the screw head, and is connected with a back side of the screw head. The screw head is fixed with a gripping head (5) that is designed in square shape. A screw body is loosened with a right tool after fixing the screw head in the small cylindrical hole.

Description

       

  VIS AVEC TETE AUTOCASSANTE 

  
Nous connaissons le brevet d'invention US 2007/0270859 Al et le brevet d'invention PCT WO 2007/109139 A2 qui décrivent tous les deux des vis à deux têtes destinées à l'orthopédie. La première tête est solidarisée à la seconde via une liaison qui peut se rompre si le couple d'entrainement dépasse une certaine limite; ce qui se passe lorsque la première tête rencontre la matière à solidariser et bloque la vis. Le seul avantage est que grâce à cet artifice la tête de vis restant liée à la vis peut être beaucoup plus plate et moins gênante ou blessante pour la muqueuse qui recouvre l'os. 

  
La vis décrite ci-après est fort différente et est conçue pour que la tête entière se désolidarise du corps de vis. 

  
La vis décrite ci-après est destinée à éviter qu'en fin de vissage reste à la surface de la matière sa tête disgracieuse qui peut éventuellement blesser. Pour ce faire on a imaginé un système permettant d'éliminer après usage cette tête des pièces que la vis solidarise. 

  
En ébénisterie, ce type de vis serait très intéressant puisqu'une fois vissée, sa tête se désolidarise automatiquement du corps de vis et il suffit de mettre un peu de mastic dans la cavité d'entrée pour faire disparaître toute trace de cette vis. 

  
Grâce à leur filet, ce type de vis solidarise beaucoup mieux qu'un simple clou les deux matières (planches,...) dans lesquelles elle est placée. De plus, dans le cas d'un clou, il faut pour enfouir sa tête utiliser un chasse-clou; ceci demande une seconde opération. 

  
Cette vis est parfaite pour, par exemple, solidariser des planches en bois ou en plastique de manière esthétique, sans qu'on ne puisse voir les têtes de vis. Etant quasi invisible, ce type de vis sera utile en tant que vis d'ostéosynthèse en orthopédie; dans ce cas aucune tête pouvant blesser la muqueuse ne restera au niveau de la surface de l'os et il ne  sera même plus nécessaire de retirer ce type de vis de l'os dans lequel elle s'ostéointégrera. 

  
MODES DE REALISATION 

  
Premier mode de réalisation (Tig. 1) 

  
Le profil des vis utilisées peut être quelconque; la seule imposition est qu'elle possède une tête (1) présentant un épaulement (2) conique ou plat au niveau du col de vis. Le dessus de la tête de vis (3) présentera le profil habituel d'une vis et sera munie des profils standards permettant son vissage par un tournevis (profil en creux de forme étoile, fente, hexagone,..). La seconde caractéristique est la restriction ou l'étranglement (4) qui relie la vis à sa tête. 

  
Le vissage s'effectuera de manière traditionnelle. Cependant, en fin de vissage, l' épaulement (2) de la tête va venir s'appuyer sur la partie située autour du trou de vissage; la vis continuant à s'enfoncer va provoquer la rupture de la tête de vis au niveau de l'étranglement (4). Cette tête va alors être éjectée par l'outil de vissage. Le plus souvent elle se coincera légèrement dans les fentes d'entraînement de cet outil ou s'y collera si celui-ci est aimanté. Seul reste alors dans la matière un petit trou au niveau de l'entrée de vissage. Afin de pouvoir éventuellement redévisser le corps de vis, en dessous de l'étranglement, sur le corps de vis, est placée une nouvelle tête de préhension (5) de forme quelconque (carrée, hexagonale,...) permettant un dévissage avec l'outil approprié. 

  
Pour éviter que le plat situé à l'arrière de la tête de vis n'abime la matière à solidariser lorsqu'elle prend appui dessus, un joint plastique (10) ou un revêtement glissant (téflon) et déformable peut être placé au préalable sur cette surface (2). 

  
Pour augmenter la pression de serrage entre les deux matières à solidariser, le pas du filet de la vis peut être plus important dans la partie basse de la vis que dans sa partie haute forçant ainsi le serrage des deux matières, celle du bas étant entraînée vers celle du haut.  Pour illustrer nos propos, sur la figure 1 sont représentées des coupes de la section de la vis à différents endroits (4-5-corps de vis) 

  
Second mode de réalisation (fig. 2) 

  
Si nécessaire pour parfaire le serrage des matières à solidariser, la vis peut être munie, comme sur la figure 2, juste en dessous de l'étranglement d'un évasement (épaulement) (6) qui s'encastrera dans la matière. Cette façon de faire à l'inconvénient de provoquer un trou de vissage plus important. 

  
Troisième mode de réalisation (f[iota]g.3 

  
La figure 3 montre un boulon et sa vis munie d'un dispositif semblable à celui de la fig 2. 

  
Dans ce cas la rupture de la vis se fera en (4) lorsque la tête de vis (1) touchera la matière en (2). L'encastrement éventuel sera obtenu si on ajoute l'épaulement (6). Lors du serrage de la vis, l'entrainement de celle ci dans son écrou (7) va provoquer son élongation et sa rupture en (4) dans la matière à solidariser (8A) et (8B)   

  
FIGURES 1- Mode de réalisation avec tête plate 

  
2- Mode de réalisation avec tête conique et évasement de serrage 

  
3- Mode de réalisation avec un boulon et son écrou 

  
REFERENCES 

  
1- Tête de vis 2- Arrière tête de vis - surface de contact 

  
3- P rrofil en creux pour le vissage au tournevis 

  
4- Etranglement de rupture 

  
5- Nouvelle tête de dévissage (après rupture de l'ancienne) 

  
6- Evasement de serrage 7- Ecrou 

  
8- Matière à solidariser (8A et 8B) 

  
9- Trou laissé par la vis dans la matière après rupture 10- Joint d'appui répartisseur de pression



  SCREW WITH AUTOMATIC HEAD

  
We know US Patent 2007/0270859 A1 and PCT Patent WO 2007/109139 A2 which both disclose two-headed screws for orthopedics. The first head is secured to the second via a connection which can break if the driving torque exceeds a certain limit; what happens when the first head meets the material to be joined and blocks the screw. The only advantage is that thanks to this device the screw head remaining attached to the screw can be much flatter and less troublesome or offensive to the mucosa that covers the bone.

  
The screw described below is very different and is designed so that the entire head disengages from the body of screws.

  
The screw described below is intended to prevent the end of screwing remains on the surface of the material unsightly head that can possibly hurt. To do this we imagined a system to eliminate after use this head parts that the screw solidarises.

  
In cabinetmaking, this type of screw would be very interesting since once screwed, its head automatically disengages from the body of screws and just put a little putty in the entrance cavity to remove all traces of this screw.

  
Thanks to their net, this type of screw is much more comfortable than a simple nail the two materials (boards, ...) in which it is placed. Moreover, in the case of a nail, it is necessary to bury his head to use a nail-chaser; this requires a second operation.

  
This screw is perfect for, for example, to join boards of wood or plastic in an aesthetic way, without one can see the screw heads. Being almost invisible, this type of screw will be useful as osteosynthesis screws in orthopedics; in this case no head that can injure the mucosa will remain at the surface of the bone and it will not even be necessary to remove this type of screw from the bone in which it will seteointegrate.

  
MODES OF REALIZATION

  
First embodiment (Tig.1)

  
The profile of the screws used can be any; the only imposition is that it has a head (1) having a shoulder (2) conical or flat at the neck of the screw. The top of the screw head (3) will have the usual profile of a screw and will be provided with standard profiles for screwing it with a screwdriver (shaped hollow star shape, slot, hexagon, ..). The second feature is the restriction or constriction (4) that connects the screw to its head.

  
The screwing will be done in a traditional way. However, at the end of screwing, the shoulder (2) of the head will come to bear on the portion located around the screw hole; the screw continues to sink will cause the breaking of the screw head at the throttling (4). This head will then be ejected by the screwing tool. Most often it will get stuck slightly in the drive slots of this tool or stick to it if it is magnetized. Only then remains in the material a small hole at the screw entrance. In order to possibly rediscover the screw body, below the constriction, on the screw body, is placed a new gripping head (5) of any shape (square, hexagonal, ...) allowing unscrewing with the appropriate tool.

  
To prevent the plate located at the rear of the screw head from damaging the material to be joined when it bears on it, a plastic seal (10) or a sliding (teflon) and deformable coating can be placed beforehand on this surface (2).

  
To increase the clamping pressure between the two materials to be joined, the pitch of the thread of the screw may be greater in the lower part of the screw than in its upper part thus forcing the tightening of the two materials, the lower one being driven towards the one from the top. To illustrate our remarks, in Figure 1 are shown sections of the section of the screw at different places (4-5-screw body)

  
Second embodiment (Fig. 2)

  
If necessary to perfect the tightening of the materials to be joined, the screw can be provided, as in Figure 2, just below the constriction of a flare (shoulder) (6) which will fit into the material. This approach has the disadvantage of causing a larger screw hole.

  
Third embodiment (f [iota] g.3

  
Figure 3 shows a bolt and its screw provided with a device similar to that of fig 2.

  
In this case the breakage of the screw will be in (4) when the screw head (1) will touch the material in (2). Any embedding will be obtained if the shoulder (6) is added. When tightening the screw, driving it into its nut (7) will cause its elongation and breakage (4) in the material to be joined (8A) and (8B)

  
FIGURES 1- Embodiment with Flat Head

  
2- Embodiment with conical head and clamping flare

  
3- Embodiment with a bolt and its nut

  
REFERENCES

  
1- Screw head 2- Back screw head - contact surface

  
3- Recessed profile for screwdriving

  
4- Strangulation fracture

  
5- New unscrewing head (after breaking the old one)

  
6- Clamping flare 7- Nut

  
8- Material to be joined (8A and 8B)

  
9- Hole left by the screw in the material after rupture 10- Pressure distribution joint

Claims (1)

REVENDICATIONS Revendication 1 Claim 1 Dispositif de serrage se composant d'une vis caractérisé en ce que cette vis comporte sous sa tête de serrage (1) et au dessus de la partie filetée une amorce de rupture (4) ou une fragilisation locale (étranglement) telle que, en fm de vissage, elle se casse en ce point (4) situé dans la matière, et ce, par étirement et par torsion, la tête de la vis (1) d'un diamètre plus large que la vis prenant alors appui (2) sur les parties à solidariser et la vis continuant à s'enfoncer. Clamping device consisting of a screw characterized in that this screw has under its clamping head (1) and above the threaded portion a breaking primer (4) or a local embrittlement (throttling) such that, in fm screwing, it breaks at this point (4) located in the material, and this, by stretching and by twisting, the head of the screw (1) of a larger diameter than the screw then taking support (2) on the parts to be secured and the screw continues to sink. La tête de vis est alors éjectée par l'outil de vissage, laissant juste apparaître un petit trou cylindrique (9) dans la matière située au dessus de la vis. The screw head is then ejected by the screwing tool, leaving just appear a small cylindrical hole (9) in the material located above the screw. Revendication 2 Claim 2 Dispositif selon la revendication 1, caractérisé par le fait que la tête de vis peut présenter un épaulement plat (2) au niveau de sa surface en contact avec la matière, à savoir, à l'arrière de la tête de vis et au niveau du col de la vis. Device according to claim 1, characterized in that the screw head can have a flat shoulder (2) at its surface in contact with the material, ie at the rear of the screw head and at the neck of the screw. Revendication 3 Claim 3 Procédé selon la revendication 1, caractérisé par le fait que la tête de vis peut présenter un épaulement conique (2) au niveau de sa surface en contact avec la matière à savoir, à l'arrière de la tête de vis et au niveau du col de la vis. Method according to Claim 1, characterized in that the screw head can have a conical shoulder (2) at its surface in contact with the material, ie at the rear of the screw head and at the neck of the screw. Revendication 4 Claim 4 Dispositif selon la revendication 1, caractérisé par le fait que l'amorce de rupture (4) peut être une diminution locale du diamètre (étranglement) de vis. Revendication 5 Device according to Claim 1, characterized in that the breaking primer (4) can be a local reduction of the screw diameter (throttling). Claim 5 Dispositif selon la revendication 1, caractérisé par le fait que la tête de vis peut présenter sous l'amorce de rupture (étranglement (4)) une seconde tête de préhension (5) de forme quelconque (carrée, hexagonale,...) mais de diamètre inférieur à celui de la vis permettant, après placement et rupture de la tête de vis, un dévissage du corps de vis avec l'outil approprié. Device according to claim 1, characterized in that the screw head may have under the breaking primer (throat (4)) a second gripping head (5) of any shape (square, hexagonal, ...) but of smaller diameter than the screw allowing, after placement and breaking of the screw head, unscrewing of the screw body with the appropriate tool. Revendication 6 Dispositif selon les revendications 1 et 2, caractérisé par le fait que pour éviter que le plat de la tête de vis n'abime la matière à solidariser lorsqu'elle prend appui dessus (2), un joint plastique (10) ou un revêtement glissant (téflon) et déformable peut être placé au préalable sur cette surface (2). Device according to claims 1 and 2, characterized in that to prevent the flat of the screw head from causing damage to the material to be joined when it bears on it (2), a plastic seal (10) or a sliding (Teflon) and deformable coating can be placed beforehand on this surface (2). Revendication 7 Claim 7 Dispositif selon la revendication 1, caractérisé par le fait que pour augmenter la pression de serrage entre les deux matières à solidariser, le pas du filet de la vis peut être plus important dans le bas que dans le haut forçant ainsi le serrage des deux matières, celle du bas étant entrainée vers celle du haut. Device according to claim 1, characterized in that to increase the clamping pressure between the two materials to be joined, the pitch of the thread of the screw may be greater in the bottom than in the top thus forcing the tightening of the two materials, that of the bottom being carried towards that of the top. Revendication 8 Claim 8 Dispositif selon la revendication 1, caractérisé par le fait que pour parfaire le serrage des matières à solidariser, la vis peut être munie juste au dessus de la partie filetée d'un évasement (épaulement) (6) d'un diamètre identique ou légèrement plus grand que celui de la vis ; cet évasement (6) s'encastrera dans la matière (8). Device according to claim 1, characterized in that to complete the tightening of the materials to be joined, the screw may be provided just above the threaded portion of a flare (shoulder) (6) of the same diameter or slightly more large than that of the screw; this flaring (6) will be embedded in the material (8). Revendication 9 Claim 9 Dispositif selon la revendication 1, 2, 4, 5,6 et 8 caractérisé par le fait que si on solidarise deux parties (8A et 8B) par un ensemble boulonvis et que la vis cylindrique est profilée comme décrit ci-avant, la rupture de la tête en (4) se fera en fin de serrage du boulon et l'effet d'encastrement (6) sera identique. Device according to Claim 1, 2, 4, 5, 6 and 8, characterized in that if two parts (8A and 8B) are secured by a bolt-screw assembly and the cylindrical screw is profiled as described above, the rupture of the head in (4) will be at the end of tightening of the bolt and the embedding effect (6) will be identical.
BE2008/0309A 2008-06-05 2008-06-05 Clamping device, has screw head fixed on small cylindrical hole by screwing tool, flat shoulder fixed in surface of screw head and connected with back side of screw head, where hole is formed in area formed above screw BE1018172A3 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
BE2008/0309A BE1018172A3 (en) 2008-06-05 2008-06-05 Clamping device, has screw head fixed on small cylindrical hole by screwing tool, flat shoulder fixed in surface of screw head and connected with back side of screw head, where hole is formed in area formed above screw

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
BE2008/0309A BE1018172A3 (en) 2008-06-05 2008-06-05 Clamping device, has screw head fixed on small cylindrical hole by screwing tool, flat shoulder fixed in surface of screw head and connected with back side of screw head, where hole is formed in area formed above screw

Publications (1)

Publication Number Publication Date
BE1018172A3 true BE1018172A3 (en) 2010-06-01

Family

ID=40549639

Family Applications (1)

Application Number Title Priority Date Filing Date
BE2008/0309A BE1018172A3 (en) 2008-06-05 2008-06-05 Clamping device, has screw head fixed on small cylindrical hole by screwing tool, flat shoulder fixed in surface of screw head and connected with back side of screw head, where hole is formed in area formed above screw

Country Status (1)

Country Link
BE (1) BE1018172A3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014118541A1 (en) * 2013-01-31 2014-08-07 Airbus Operations Limited Fastener

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2370083A (en) * 2000-12-18 2002-06-19 Reginald Francis John Millin Woodscrew having a removable head
WO2007109139A2 (en) * 2006-03-17 2007-09-27 Nexa Orthopedics, Inc. Snap-off screw with recessed breakoff area

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2370083A (en) * 2000-12-18 2002-06-19 Reginald Francis John Millin Woodscrew having a removable head
WO2007109139A2 (en) * 2006-03-17 2007-09-27 Nexa Orthopedics, Inc. Snap-off screw with recessed breakoff area

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2014118541A1 (en) * 2013-01-31 2014-08-07 Airbus Operations Limited Fastener

Similar Documents

Publication Publication Date Title
ATE462084T1 (en) SHEAR SCREW
DE502005008664D1 (en) Tear-off screw, associated system and method for screwing the tear-off screw
EP1724412A3 (en) Spacer and method for fixing an article to a support with an exterior insulating layer
FR2661222A1 (en) ARRACHEMENT - RESISTANT ANCHOR ASSEMBLY AND ANCHORING METHOD.
FR2461842A1 (en) PIN-RIVET FOR FASTENING PANELS BETWEEN THEM
FR2725252A1 (en) HEAD SCREW WITH SELF-DRILLING HEAD
CA2553825C (en) A fastener
WO2009021073A3 (en) Screw with breakaway and methods of using the same
BE1018172A3 (en) Clamping device, has screw head fixed on small cylindrical hole by screwing tool, flat shoulder fixed in surface of screw head and connected with back side of screw head, where hole is formed in area formed above screw
KR100839228B1 (en) Anchor bolt
EP0951869A1 (en) Threaded bone anchor
FR2777489A1 (en) Controlled tightening electrical connector mechanism
WO2006042592A3 (en) Assembly screw for fixing fittings, especially strip parts, to hollow-chamber profiled elements
EP1471206B1 (en) Fastening means, and method for making a casing using such a fastening means.
ES2432410T3 (en) Breaking screw for connecting elements of electrical conductors
FR2583837A1 (en) Spacer bush for window fittings
KR100805306B1 (en) A bolt with a nut for single side tighten
FR2495211A1 (en) DEVICE FOR FIXING A HINGE ON INSULATED DOORS OR THE LIKE
FR2493390A1 (en) Transom and window frame piece abutting joint connector - has deformable cross arm pressed against batten hook, and punch screw
FR2940924A1 (en) Annular burr eliminating device for introducing hook in hole of sheet metal to fix liner, has maintenance units applying force on punch such that end of punch is engaged with force in hole by crushing burr and penetrating burr in bore
FR2969679A1 (en) Intermediate support wall plate for installing accessories on wall, has jumper units arranged at ends of threaded rod, and clamping element arranged to exert pressure on end of pin so as to deform end of pin to force against threaded rod
ITTO20120067U1 (en) SCREW FOR FIXING A WOOD ELEMENT TO AN UNDERLYING STRUCTURE
FR2757226A1 (en) ASSEMBLY BETWEEN A METAL SCREW AND A PLASTIC PIECE
CH353879A (en) Anchoring device and method of activating this device
FR2966211A1 (en) Device for anchoring joinery works on support structure in presence of interior insulation in building, has attachment comprising slot that is oriented along longitudinal axis of attachment and opened at free end of attachment

Legal Events

Date Code Title Description
RE Patent lapsed

Effective date: 20110630