EP0488448A1 - Pfosten - Google Patents

Pfosten Download PDF

Info

Publication number
EP0488448A1
EP0488448A1 EP91203018A EP91203018A EP0488448A1 EP 0488448 A1 EP0488448 A1 EP 0488448A1 EP 91203018 A EP91203018 A EP 91203018A EP 91203018 A EP91203018 A EP 91203018A EP 0488448 A1 EP0488448 A1 EP 0488448A1
Authority
EP
European Patent Office
Prior art keywords
post
connecting piece
longitudinal
barbs
fastening 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.)
Withdrawn
Application number
EP91203018A
Other languages
English (en)
French (fr)
Inventor
Frans Bruggeman
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.)
Bekaert NV SA
Original Assignee
Bekaert NV SA
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 Bekaert NV SA filed Critical Bekaert NV SA
Publication of EP0488448A1 publication Critical patent/EP0488448A1/de
Withdrawn legal-status Critical Current

Links

Images

Classifications

    • E—FIXED CONSTRUCTIONS
    • E04—BUILDING
    • E04H—BUILDINGS OR LIKE STRUCTURES FOR PARTICULAR PURPOSES; SWIMMING OR SPLASH BATHS OR POOLS; MASTS; FENCING; TENTS OR CANOPIES, IN GENERAL
    • E04H17/00—Fencing, e.g. fences, enclosures, corrals
    • E04H17/02—Wire fencing, e.g. made of wire mesh
    • E04H17/10—Wire fencing, e.g. made of wire mesh characterised by the way of connecting wire to posts; Droppers
    • E04H17/124—Wire fencing, e.g. made of wire mesh characterised by the way of connecting wire to posts; Droppers connecting by one or more clamps, clips, screws, wedges or ties

Definitions

  • the present invention relates to a post consisting of a longitudinally bent plate, whereby the two opposed longitudinal edges of the post thus formed are joined together with a longitudinal connecting piece.
  • Such a post is known from the British patent 984.504.
  • a post construction method is described, said post being formed starting with a steel strip, said strip being bent so that the strip substantially takes the form of a post and the opposed longitudinal edges of the post thus formed then being joined together by means of a C-shaped, longitudinal connecting piece.
  • a disadvantage of this known post is that the fastening means for the attachment of the wires or the mesh to the fence post consist of clamps or clips, and that the fastening of these clamps or clips to the post is a time-consuming and expensive operation.
  • this longitudinal connecting piece is provided with recesses for the reception therein of fastening means for the attachment of wires or mesh to the post.
  • This longitudinal connecting piece is preferably provided with a longitudinal slot for the reception therein of the fastening means.
  • a second object of the present invention is therefore to provide a new type of post which is inexpensive to manufacture and which furthermore is very strong, even in the case of thin-walled posts or tubes with a large inner diameter.
  • the post consists of at least two parts ; namely a first part, that is made up of a longitudinally bent plate so as to form substantially the actual fence post, and a second part that forms the connecting piece between the two opposed longitudinal edges for the post thus formed.
  • This longitudinal connecting piece is preferably an extruded section made of plastic or another extrudable material.
  • the longitudinal edges of the first part or the longitudinally bent plate are preferably hooked into the second part or the longitudinal connecting piece.
  • the post thus formed from the longitudinally bent plate is preferably completely coated with a thin layer of the same extrudable material of the longitudinal connecting piece. This coating forms a good corrosion-resistant coating.
  • An important advantage of the post according to the present invention is that it is now possible to manufacture inexpensive, thin-walled tubes with a large diameter. This advantage will be explained further in the description on the basis of some numerical examples.
  • the post according to the present invention is particularly characterized by the fact that the fastening means are substantially U-shaped, the legs of the U-shaped fastening means being provided with tapering barbs that work in concert with corresponding grooves in the side walls of the recesses or the longitudinal slot of the connecting piece. These tapering barbs can be in phase with each other and with the grooves in the recesses or the longitudinal slot. However, these tapering barbs are preferably dephased relative to one another and relative to the grooves in the recesses or the longitudinal slot, so that a better fine adjustment of the fastening means is obtained when fixing the wires or the mesh to the post. This advantage will also be further explained in the description below.
  • the present invention particularly relates to a method for manufacturing a post, whereby a longitudinal strip or plate is bent so as to form substantially a fence post and whereby a connecting piece is also extruded, while the opposed longitudinal edges of the post thus formed are incorporated in the extruded connecting piece.
  • An important advantage of the construction method according to the present invention is that it is now possible to make fence posts quickly and inexpensively.
  • Figure 1 shows a front perspective view of a part of a fence.
  • the posts 1 according to the present invention are used for fixing a mesh 2 to the posts. It is evident that wires 2 can also be fixed to the posts in place of the mesh 2. The attachment of the wires 2 or mesh 2 to the posts 1 is carried out with the help of fastening means 3.
  • Figure 2 shows a front perspective view of a part of a post 1 according to the present invention with an associated fastening means 3.
  • the post 1 according to the present invention consists on the one hand of a longitudinally bent plate or strip, for example a steel strip, and on the other hand of a longitudinal connecting piece 4 for joining together the two opposed longitudinal edges 5 of the strip thus bent or formed into a fence post.
  • the bending or transforming of the plate or strip to form a substantially closed tube is carried out with known machines.
  • the longitudinal connecting piece 4 is provided with recesses 6 for the reception therein or taking up of fastening means 3. These recesses 6 can extend over the full length of the connecting piece 4 so as to form a longitudinal slot 6.
  • the longitudinal connecting piece 4 is preferably an extruded section made of plastic or another extrudable material, such as aluminium or an aluminium alloy.
  • the opposed longitudinal edges 5 of the plate are incorporated in connecting piece 4.
  • the incorporation of the longitudinal edges 5 into the connecting piece 4 can take place during the extrusion of the connecting piece 4 around the opposed edges 5. It is also possible to extrude the connecting piece 4 separately, said piece 4 then being provided with longitudinal slits for the reception therein of the longitudinal edges 5.
  • the attachment of these longitudinal edges 5 into the longitudinal slits can be done with the help of suitable adhesives.
  • the longitudinal edges 5 of the post 1 thus formed are preferably locked with hooked ends or mechanically fastened in the long connecting piece 4. This is clearly shown in figures 3b, 3d and 3e.
  • the fastening means 3 substantially shows a U-shape.
  • the legs 7 of the U-shaped fastening means 3 are provided with tapering barbs 8. These tapering barbs 8 can grip into the associated or corresponding grooves 9 in the side walls of the longitudinal slot 6 of the connecting piece 4.
  • the big advantage of these tapering fastening means 3 is that these means can be locked into the associated grooves 9 with very ordinary tools, e.g. a hammer, very quickly and inexpensively. By striking on the head 10 of the means 3 with a hammer, said legs 7 lock into the grooves 9 and the mesh 2 or the fencing wire 2 is clamped between the post 1 and the legs 7 of fastening means 3.
  • Figures 4 and 5 show in detail a cross-section through two possible embodiments of the tapering barbs 8 and the associated or corresponding grooves 9 in the side walls of the longitudinal slot 6.
  • the tapering barbs 8 on both sides of each leg 7 are in phase with one another and with the grooves 9 in the longitudinal slot 6. Owing to this fact, for the means 3 only a fine adjustment can be obtained that is equal to the length or the step between two barbs.
  • the tapering barbs 8 on both sides of each leg 7 are displaced one half of a step or the interval between two barbs relative to one another, or it means that the tapering barbs are dephased relative to one another, while the grooves 9 in both side walls of the longitudinal slot 6 are still in phase with one another.
  • the big advantage of this fact is that during the attachment of the wires 2 or the mesh 2 a fine adjustment of the means 3 can be obtained that is equal to half of the step or the interval between two barbs 8.
  • FIG. 6a shows a cross-section through a further embodiment of a post 1 according to the invention.
  • This post 1 again consists on the one hand of a longitudinally bent plate or strip, for example a steel strip, and on the other hand of a longitudinal connecting piece 4 of an extrudable material for joining together the two opposed longitudinal edges 5 of the strip thus formed or bent into a post 1.
  • the opposed longitudinal edges 5 of steel strip or post 1 are incorporated into the connecting piece 4.
  • the incorporation of the longitudinal edges 5 into the connecting piece 4 has taken place during the extrusion of the material of the connecting piece 4 around the opposed edges 5.
  • the steel strip or the formed post 1 is now completely coated by a thin layer 11 of the same material of the connecting piece 4.
  • This coating 11 and the connecting piece 4 are preferably applied during the same extrusion process.
  • This coating 11 forms a good corrosion-resistant coating for the post 1.
  • Figure 6b shows a longitudinal section through a part of the post 1 according to the invention. As can be seen from these figures 6a and 6b, the edges 5 are provided with openings 12 for improving the attachment of these longitudinal edges 5 into the longitudinal connecting piece 4.
  • an important advantage of the fence post according to the present invention is that it is now possible to manufacture inexpensive, thin-walled tubes with a large diameter. This advantage will be explained below on the basis of some numerical examples.
  • the figures shown in table I concern, on the one hand, well-known round fence posts made of steel plate and, on the other hand, round posts according to the present invention or posts 1 with a connecting piece 4.
  • An important advantage of the posts according to the present invention is that it is now possible to make a major saving (see table I : return) of material, despite the fact that the moment of resistance (strength) I/v of these posts according to the present invention remains almost equal and that the diameter of these posts even increases considerably. This is a consequence of the fact that it is now possible to make thin-walled posts.
  • the longitudinal edges 5 are welded to each other.
  • the wall thickness of the steel plate used is about 1,5 mm (1,5 mm ; 1,5 mm ; 2 mm resp.).
  • the longitudinal edges 5 are joined together with the connecting piece 4, as a result of which the welding operation is eliminated and thanks to which it is now possible to use strips or plates with a smaller thickness.

Landscapes

  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Civil Engineering (AREA)
  • Structural Engineering (AREA)
  • Fencing (AREA)
EP91203018A 1990-11-27 1991-11-20 Pfosten Withdrawn EP0488448A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9001129 1990-11-27
BE9001129A BE1003217A3 (nl) 1990-11-27 1990-11-27 Paal.

Publications (1)

Publication Number Publication Date
EP0488448A1 true EP0488448A1 (de) 1992-06-03

Family

ID=3885037

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91203018A Withdrawn EP0488448A1 (de) 1990-11-27 1991-11-20 Pfosten

Country Status (3)

Country Link
EP (1) EP0488448A1 (de)
BE (1) BE1003217A3 (de)
PT (1) PT99626A (de)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2314355A (en) * 1996-06-22 1997-12-24 Aluminium Structure Pte Ltd Fencing system
AT408243B (de) * 1997-12-01 2001-09-25 Adolf Fischer Kommanditgesells Mit einem drahtgitter ausgefüllter rahmen

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7211652A (de) * 1971-09-01 1973-03-05
DE2904907A1 (de) * 1979-02-09 1980-08-14 Kraus Metallwaren Gmbh Konrad Zaunpfahl und verfahren zu seiner herstellung
GB2058874A (en) * 1979-08-11 1981-04-15 Malkmus Doernemann Carola A Hollow Profiled Rod for a Fence or Gate
DE8707032U1 (de) * 1987-05-15 1987-07-23 Adronit-Werk Hermann Aderhold GmbH & Co, 5802 Wetter Vorrichtung an einem Zaunpfosten od.dgl. zur Befestigung eines Spanndrahtes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL7211652A (de) * 1971-09-01 1973-03-05
DE2904907A1 (de) * 1979-02-09 1980-08-14 Kraus Metallwaren Gmbh Konrad Zaunpfahl und verfahren zu seiner herstellung
GB2058874A (en) * 1979-08-11 1981-04-15 Malkmus Doernemann Carola A Hollow Profiled Rod for a Fence or Gate
DE8707032U1 (de) * 1987-05-15 1987-07-23 Adronit-Werk Hermann Aderhold GmbH & Co, 5802 Wetter Vorrichtung an einem Zaunpfosten od.dgl. zur Befestigung eines Spanndrahtes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2314355A (en) * 1996-06-22 1997-12-24 Aluminium Structure Pte Ltd Fencing system
AT408243B (de) * 1997-12-01 2001-09-25 Adolf Fischer Kommanditgesells Mit einem drahtgitter ausgefüllter rahmen

Also Published As

Publication number Publication date
BE1003217A3 (nl) 1992-01-14
PT99626A (pt) 1994-01-31

Similar Documents

Publication Publication Date Title
US4069638A (en) Structure of lightweight bars and connector means therefore
US3848855A (en) Tubing connection
RU2120832C1 (ru) Крепежное кольцо и способ изготовления крепежного кольца
EP0488448A1 (de) Pfosten
US6088902A (en) Method of fixing a tubular metal member in an aperture and tool therefor
US20040041142A1 (en) Fence panel and connector therefor
EP2398605B1 (de) Verfahren zum winden von hohlstangen
JPH07280185A (ja) 複合形材及びその製造方法
EP0380529B1 (de) Kabelträger und verfahren zur herstellung
JPH0988241A (ja) 柱・梁接合部における鉄筋定着方法
EP0639684B1 (de) Bauelement
EP0750708B1 (de) Rahmen
JP2006504004A (ja) 梁
WO2005053868A2 (en) Intermittently connected metal matrix composite bars
US20010026728A1 (en) Connectors
CN217666129U (zh) 一种圆管涵预制管节钢筋笼绑扎胎架
GB2370050A (en) Fence panel and connector therefor
JP2591517B2 (ja) 形材の結合方法
JP3156148B2 (ja) フェンスの縦材取付構造
JP2617866B2 (ja) フェンスとその製造方法
JP3032327B2 (ja) 鉄筋組立用筋枠
JP2552002Y2 (ja) 電気防食用電極
LU84596A1 (fr) Procede de realisation d'une poutre composite et poutre realisee suivant ce procede
US4531666A (en) Method of making tubes
JP2766585B2 (ja) 型枠用連結金具

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT BE CH DE ES FR GB IT LI LU NL SE

17P Request for examination filed

Effective date: 19920916

17Q First examination report despatched

Effective date: 19921023

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION IS DEEMED TO BE WITHDRAWN

18D Application deemed to be withdrawn

Effective date: 19930303