EP0078566A1 - Structure d'une barrière de sécurité - Google Patents
Structure d'une barrière de sécurité Download PDFInfo
- Publication number
- EP0078566A1 EP0078566A1 EP82201322A EP82201322A EP0078566A1 EP 0078566 A1 EP0078566 A1 EP 0078566A1 EP 82201322 A EP82201322 A EP 82201322A EP 82201322 A EP82201322 A EP 82201322A EP 0078566 A1 EP0078566 A1 EP 0078566A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- tube
- barrier structure
- reinforcing member
- structure according
- layer
- 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.)
- Granted
Links
- 230000004888 barrier function Effects 0.000 title claims abstract description 29
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 34
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 12
- 239000010959 steel Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims description 18
- 239000000758 substrate Substances 0.000 claims description 6
- 239000011210 fiber-reinforced concrete Substances 0.000 claims description 3
- 229910010293 ceramic material Inorganic materials 0.000 claims description 2
- 239000004567 concrete Substances 0.000 abstract description 17
- 229910003460 diamond Inorganic materials 0.000 abstract description 15
- 239000010432 diamond Substances 0.000 abstract description 15
- 230000035515 penetration Effects 0.000 abstract description 8
- 230000002787 reinforcement Effects 0.000 abstract description 8
- 229910052751 metal Inorganic materials 0.000 abstract description 5
- 239000002184 metal Substances 0.000 abstract description 5
- 239000000919 ceramic Substances 0.000 abstract description 2
- 229910001209 Low-carbon steel Inorganic materials 0.000 description 7
- PNEYBMLMFCGWSK-UHFFFAOYSA-N Alumina Chemical compound [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 6
- 230000008901 benefit Effects 0.000 description 3
- 239000011159 matrix material Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 239000002245 particle Substances 0.000 description 3
- 230000004323 axial length Effects 0.000 description 1
- 239000000470 constituent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 229910052500 inorganic mineral Inorganic materials 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000011707 mineral Substances 0.000 description 1
- 230000000717 retained effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000036346 tooth eruption Effects 0.000 description 1
Images
Classifications
-
- E—FIXED CONSTRUCTIONS
- E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
- E05G—SAFES OR STRONG-ROOMS FOR VALUABLES; BANK PROTECTION DEVICES; SAFETY TRANSACTION PARTITIONS
- E05G1/00—Safes or strong-rooms for valuables
- E05G1/02—Details
- E05G1/024—Wall or panel structure
Definitions
- the present invention relates to barrier structures for use eg in the walls and/or doors of safes, strongrooms and the like security enclosures.
- Barrier structures provided for this purpose must have a high degree of resistance to penetration by a variety of mechanical and thermal tools, and as the forms of tool which may be appropriated for attacks on such enclosures are developed so also must the barrier structures for resisting them be improved.
- the present invention is particularly concerned to provide a security barrier structure with high resistance to penetration by a certain clss of industrially-useful cutting tool, namely diamond drills, saws and the like.
- the diamond drill is a form of core drill (holesaw) which typically comprises a steel tube having welded to one end thereof a series of "teeth", the teeth comprising particles of diamond embedded in a softer matrix material.
- These drills are intended for cutting hard minerals, concrete and the like materials and depend for their operation on the continual wearing down of the matrix material in the drill tip by the work being cut, so as continually to expose fresh diamond particles.
- Similar cutting teeth can be provided on the circumference of a circular saw for example.
- the invention resides in a security barrier structure comprising a substrate layer onto which is cast a layer of security material; anchor means extending from the substrate layer into the mass of the cast layer; and at least one reinforcing member attached to the anchor means so as to be embedded within the mass of the cast layer; the or each said reinforcing member comprising a tube generally aligned with the plane of the barrier and containing elements which are able to move within the tube in response to contact with a rotary tool.
- the invention also resides in the reinforcing members of such a structure per se, and of which details will appear hereafter.
- the elements which are contained within the tube of a said reinforcing member may for example comprise rods, rollers or other elements of a relatively hard metal (eg tensile steel), ceramic (eg aluminium oxide) or other material.
- a relatively hard metal eg tensile steel
- ceramic eg aluminium oxide
- Such elements may act to resist penetration of the barrier structure by a diamond drill, in the following way.
- the drill has penetrated the part of the surrounding security material between the exterior of the enclosure and the reinforcing member and has also cut through part of the wall of the tube of the reinforcing member, the ensuing contact of the contained elements with the rotating drill tip will in general cause those elements also to rotate, thereby significantly slowing the rate at which individual elements can be cut or preventing them from being cut at all.
- the elements are relatively loosely packed they can also revolve or otherwise move about inside the tube and thereby set up strong vibrations in the drill leading to rapid wear of the drill tip and fracture of its teeth and other possible damage to the drilling machine.
- the inclusion of a multiplicity of relatively small hard elements of a size to fit between the teeth of the drill tip is also of advantage, such elements tending to snap off the drill teeth as the tool continues to rotate with the hard elements trapped between its teeth.
- the inclusion of softer and more malleable elements in the tube of a said reinforcing member has also been found to frustrate attempts to penetrate the reinforcing member with a diamond drill, although in this case the mechanics are somewhat different.
- the soft elements suitably sized for the purpose, can get between the drill teeth and between the drill and the walls of the core which the drill has prepared in the surrounding security material, and thereby act to jam the rotation of the tool.
- these softer elements tend not to wear the matrix material of the drill teeth rapidly enough to expose sufficient diamond particles to cut the elements; instead the rubbing action of the rotating drill on the elements generates excessive heat and if mild steel elements are used, for example, they may become welded to the tool and thus still further reduce its efficacy. If the tool is withdrawn under these conditions the molten metal may become spread over the walls of the drilled core and thereby prevent reinsertion of the tool to the same depth as it has previously drilled.
- a mixture of the harder and softer elements referred to above may also be of advantage.
- the layer of security material, so-called herein, within which the aforesaid reinforcing members are embedded may in general be provided by any one of the known castable penetration-resistant materials customarily used in the construction of security enclosures, thus including selected concrete, metal and elastomer materials, with or without additional penetration-resistant constituents.
- a particularly preferred security material which, when used together with such members in a barrier structure . according to the invention can provide balanced resistance to a wide variety of forms of mechanical and thermal attack at reasonable cost, is steel fibre-reinforced concrete.
- a mild steel backing plate 1 (which defines the inside surface of the enclosure) to which is secured a layer of steel fibre-reinforced concrete 2 with embedded therein a series of elongate reinforcing members 3.
- Rows of steel anchors 4 are welded to the back plate 1 to extend into the mass of the concrete layer 2, and the reinforcing members 3 are welded to the anchors 4 so as to lie generally in the plane of the barrier structure and transverse to any expected line of attack thereon.
- the primary purpose of the members 3 is to increase the resistance of the structure to penetration by a diamond core drill, although they may of course similarly act to resist penetration by other types of rotary tool.
- Figures 2a and 2b show one form of reinforcing member 3 which can be used in the structure of Figure 1. It comprises a tube 5, typically of mild steel, capped at each end 6 and containing a small number of loosely-packed parallel rods 7, each extending through the full length of the tube.
- the rods 7 are typically made of tensile steel. Three such rods are shown in the Figures, each having a typical diameter of 7mm, with the inside diameter of the tube 5 being about 20mm. There is thus sufficient space within the tube 5 for the rods 7 not only to rotate around their own respective axes but also to move about independently in the lateral sense. When such a reinforcement is encountered by the tip of a diamond drill cutting through the tube wall 5, the rods will accordingly rotate and vibrate under the action of the drill tip to slow or prevent the drill from cutting the rods, and to spoil the tool.
- Figures 3a and 3b show another kind of reinforcement 3, which depends primarily on rotation of its internal elements to frustrate the drill.
- the tube 5 contains a series of individual rollers 8 stacked one upon the other, these rollers being made from a hard ceramic material such as aluminium oxide - eg the material sold as METOXIT (Registered Trade Mark) AL998.
- the rollers have a diameter only slightly less than the internal diameter of the tube 5, and a typical length of 25mm in a 20mm tube. They have squared-off ends and a combined axial length substantially equal to the length of the tube 5 so that no gaps appear between one roller and the next through which the rim of a diamond core drill could pass.
- Figures 4a and 4b show a form of reinforcement 3 in which the tube 5 is packed throughout with a multiplicity of randomly-orientated rods or needles 9 of a relatively soft and malleable metal - eg mild steel of a grade from which ordinary wood-fixing nails are customarily made.
- These rods typically have a diameter of 1-1.5mm and a length which is slightly less than the internal diameter of the tube 5, eg 15-18mm in a 20mm tube.
- the rods 9 are therefore of a size such that they can adopt any orientation within the tube 5 and are small enough to be able to pass out of the tube when the latter is penetrated by a diamond drill tip.
- Elements of this type frustrate the action of the drill in a somewhat different manner to the harder elements 7 and 8 of the Figures 2 and 3 embodiments, as previously described. That is to say they tend to jam the rotation of the tool by getting between the drill teeth and between the drill and the walls of the core which it has prepared in the concrete layer 2, and can even become welded to the drill and core.
- the tube 5 is filled with elements of a similar form to the mild steel rods 9 of Figure 4, but in this case the rods are of hard steel eg of a grade from which masonry nails are made. These can act to frustrate the drill by snapping off its teeth when the rods are caught between the rotating teeth, in addition to rotation and vibrating within the tube.
- a mixture of mild steel and hard steel rods 9 within the same tube 5 is also possible in order to give a combined resistive effect to the drill.
- a ratio of approximately 2:1 in the numbers of the softer and harder elements has been found to be particularly efficacious.
- the rows of anchors 4 are first welded to the back plate 1 and the tubes 5 of the prepared reinforcing members 3 are then welded to the anchors 4.
- the plate 1 is assembled with a re-usable mould structure (not shown) to define an approprite cavity for the layer 2, and the wet concrete mixture with dispersed steel fibres is poured in.
- the plate 1 and mould structure are separated to leave the barrier structure as shown in Figure 1.
- the concrete thickness is typically 150mm with the reinforcing members 3 at a typical depth of 105mm from the external concrete surface and pitched at no more than 75mm apart so that any core drill which is adapted to form a "handhole" size aperture will encounter at least one of the members 3 before the barrier structure is penetrated.
- the spacing between adjacent pairs of reinforcing members 3 is irregular (within a maximum specified dimension as typified above) to increase the difficulty of predicting the reinforcement positions from the outside.
- the reinforcing members 3 serve together with the anchors 4 to maintain the integrity of the concrete layer 2 and to offer high resistance to separation of the concrete from the backing plate 1. Furthermore, the use of steel fibre reinforcement in the concrete of the layer 2 imparts high tensile strength to the concrete, so that if a diamond drill is used to penetrate the concrete up to a reinforcing member 3 it will be difficult to detach the partially-drilled core from the remainder of the concrete layer in order to gain access to the member 3 with different tools to which it may be more vulnerable. This difficulty is compounded by providing the reinforcements 3 at a considerable depth within the layer 2.
- any partially-drilled core which reaches a member 3 will encompass the outer end of an anchor 4 and thus the core will be retained in place by this means also.
Landscapes
- Earth Drilling (AREA)
- Processing Of Stones Or Stones Resemblance Materials (AREA)
- Laminated Bodies (AREA)
- Working Measures On Existing Buildindgs (AREA)
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB8133085 | 1981-11-03 | ||
| GB8133085 | 1981-11-03 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0078566A1 true EP0078566A1 (fr) | 1983-05-11 |
| EP0078566B1 EP0078566B1 (fr) | 1986-01-08 |
Family
ID=10525588
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP82201322A Expired EP0078566B1 (fr) | 1981-11-03 | 1982-10-25 | Structure d'une barrière de sécurité |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0078566B1 (fr) |
| AU (1) | AU553929B2 (fr) |
| DK (1) | DK485982A (fr) |
| ES (1) | ES277106Y (fr) |
| HK (1) | HK89186A (fr) |
| MY (1) | MY8700094A (fr) |
| NZ (1) | NZ202304A (fr) |
| PT (1) | PT75786B (fr) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3400818A1 (de) * | 1984-01-12 | 1985-07-18 | Bode-Panzer Ag, 3000 Hannover | Bautafel zur sicherung von bankraeumen oder dergleichen |
| FR2558204A1 (fr) * | 1984-01-12 | 1985-07-19 | Fichet Bauche | Panneau de construction pour la protection de locaux bancaires ou analogues |
| FR2559254A1 (fr) * | 1984-02-02 | 1985-08-09 | Picard | Blindage resistant au percage et son procede de fabrication |
| FR2560628A1 (fr) * | 1984-03-02 | 1985-09-06 | Securite Services Cie Europ | Paroi blindee pour coffre-fort et coffre-fort comportant de telles parois |
| EP0249652A2 (fr) * | 1986-05-17 | 1987-12-23 | Bode-Panzer AG | Coffre-fort |
| DE3826936A1 (de) * | 1988-08-09 | 1990-02-15 | Heerum X Hersacher Gmbh U Co K | Armierungselement zur bewehrung von in giessverfahren zu erstellenden plattenfoermigen teilen |
| CH680602A5 (en) * | 1990-03-02 | 1992-09-30 | Huegli Ingenieurunternehmung | Strong-room wall protector against drilling - has body enclosing roller with radial protruding ribs in different planes |
| WO2015031319A1 (fr) * | 2013-08-26 | 2015-03-05 | George David L | Structures de barres de sécurité mécaniques stratifiées |
| SE2230075A1 (sv) * | 2022-03-16 | 2023-09-17 | Cesium Holding Ab | Konstruktionselement för ett säkerhetsskåp samt m etod att förbättra säkerhetsskåp |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE8815120U1 (de) * | 1988-12-05 | 1989-03-30 | Hermann Gloerfeld -Metallwaren- GmbH & Co. KG, 5860 Iserlohn | Armierungsfaser aus Metall, insbesondere aus Stahldraht, zur Armierung von Beton, insbesondere von Spritzbeton |
| ES2184542B1 (es) * | 1999-12-29 | 2004-08-01 | Bolt Gestion Y Patrimonio, S.L. | Perfeccionamientos en las paredes de cajas fuertes, recintos de seguridad y similares. |
| WO2005019581A1 (fr) * | 2003-08-25 | 2005-03-03 | Bolt Gestion Y Patrimonio, S.L. | Structure modulaire pour coffres-forts et autres articles semblables |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3123025A (en) * | 1964-03-03 | Arrangement in safe walls or the like | ||
| GB1083348A (en) * | 1965-04-12 | 1967-09-13 | Warren Max Shwayder | Armor for stopping drills and the like |
| DE1784644A1 (de) * | 1968-08-30 | 1971-11-11 | Kirschbaum Heinrich | Schutzgitter |
| DE2525738A1 (de) * | 1975-06-10 | 1976-12-23 | Danzer Josef Helmut | Bohrsicheres plattenelement |
| EP0024312A1 (fr) * | 1979-08-08 | 1981-03-04 | Boris Fipke | Dispositif de protection contre l'infraction pour soupiraux ou analogues |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US881031A (en) * | 1906-11-23 | 1908-03-03 | Herring Hall Marvin Safe Company | Safe and vault. |
-
1982
- 1982-10-25 EP EP82201322A patent/EP0078566B1/fr not_active Expired
- 1982-10-28 AU AU89876/82A patent/AU553929B2/en not_active Ceased
- 1982-10-28 NZ NZ20230482A patent/NZ202304A/en unknown
- 1982-11-02 ES ES1982277106U patent/ES277106Y/es not_active Expired
- 1982-11-02 DK DK485982A patent/DK485982A/da not_active Application Discontinuation
- 1982-11-03 PT PT7578682A patent/PT75786B/pt not_active IP Right Cessation
-
1986
- 1986-11-20 HK HK89186A patent/HK89186A/xx not_active IP Right Cessation
-
1987
- 1987-12-30 MY MY8700094A patent/MY8700094A/xx unknown
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3123025A (en) * | 1964-03-03 | Arrangement in safe walls or the like | ||
| GB1083348A (en) * | 1965-04-12 | 1967-09-13 | Warren Max Shwayder | Armor for stopping drills and the like |
| DE1784644A1 (de) * | 1968-08-30 | 1971-11-11 | Kirschbaum Heinrich | Schutzgitter |
| DE2525738A1 (de) * | 1975-06-10 | 1976-12-23 | Danzer Josef Helmut | Bohrsicheres plattenelement |
| EP0024312A1 (fr) * | 1979-08-08 | 1981-03-04 | Boris Fipke | Dispositif de protection contre l'infraction pour soupiraux ou analogues |
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3400818A1 (de) * | 1984-01-12 | 1985-07-18 | Bode-Panzer Ag, 3000 Hannover | Bautafel zur sicherung von bankraeumen oder dergleichen |
| FR2558204A1 (fr) * | 1984-01-12 | 1985-07-19 | Fichet Bauche | Panneau de construction pour la protection de locaux bancaires ou analogues |
| FR2559254A1 (fr) * | 1984-02-02 | 1985-08-09 | Picard | Blindage resistant au percage et son procede de fabrication |
| FR2560628A1 (fr) * | 1984-03-02 | 1985-09-06 | Securite Services Cie Europ | Paroi blindee pour coffre-fort et coffre-fort comportant de telles parois |
| EP0249652A2 (fr) * | 1986-05-17 | 1987-12-23 | Bode-Panzer AG | Coffre-fort |
| EP0249652A3 (en) * | 1986-05-17 | 1988-03-16 | Bode-Panzer Ag | Safe |
| DE3826936A1 (de) * | 1988-08-09 | 1990-02-15 | Heerum X Hersacher Gmbh U Co K | Armierungselement zur bewehrung von in giessverfahren zu erstellenden plattenfoermigen teilen |
| CH680602A5 (en) * | 1990-03-02 | 1992-09-30 | Huegli Ingenieurunternehmung | Strong-room wall protector against drilling - has body enclosing roller with radial protruding ribs in different planes |
| WO2015031319A1 (fr) * | 2013-08-26 | 2015-03-05 | George David L | Structures de barres de sécurité mécaniques stratifiées |
| WO2015031307A1 (fr) * | 2013-08-26 | 2015-03-05 | George David L | Structures de barreaux de sécurité mécaniques stratifiées |
| SE2230075A1 (sv) * | 2022-03-16 | 2023-09-17 | Cesium Holding Ab | Konstruktionselement för ett säkerhetsskåp samt m etod att förbättra säkerhetsskåp |
| WO2023177334A1 (fr) * | 2022-03-16 | 2023-09-21 | Cesium Holding Ab | Élément de construction pour armoire de sécurité, porte pour récipient, récipient comprenant un tel élément de construction et procédé d'amélioration d'une armoire de sécurité |
| SE546564C2 (sv) * | 2022-03-16 | 2024-12-03 | Cesium Holding Ab | Konstruktionselement för ett säkerhetsskåp, dörr för en container innefattande ett konstruktionselement och en container innefattande minst ett konstruktionselement |
Also Published As
| Publication number | Publication date |
|---|---|
| PT75786B (en) | 1985-03-19 |
| EP0078566B1 (fr) | 1986-01-08 |
| AU553929B2 (en) | 1986-07-31 |
| MY8700094A (en) | 1987-12-31 |
| PT75786A (en) | 1982-12-01 |
| NZ202304A (en) | 1984-12-14 |
| DK485982A (da) | 1983-05-04 |
| HK89186A (en) | 1986-11-28 |
| AU8987682A (en) | 1983-05-12 |
| ES277106U (es) | 1984-07-01 |
| ES277106Y (es) | 1985-02-16 |
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