WO1990001100A1 - Bullet resistant glass - Google Patents

Bullet resistant glass Download PDF

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Publication number
WO1990001100A1
WO1990001100A1 PCT/AU1989/000302 AU8900302W WO9001100A1 WO 1990001100 A1 WO1990001100 A1 WO 1990001100A1 AU 8900302 W AU8900302 W AU 8900302W WO 9001100 A1 WO9001100 A1 WO 9001100A1
Authority
WO
WIPO (PCT)
Prior art keywords
glass
sheet
film
sheets
bullet resistant
Prior art date
Application number
PCT/AU1989/000302
Other languages
French (fr)
Inventor
William Peter Stephinson
Original Assignee
William Peter Stephinson
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 William Peter Stephinson filed Critical William Peter Stephinson
Priority to BR898907560A priority Critical patent/BR8907560A/en
Priority to KR1019900700581A priority patent/KR900702167A/en
Publication of WO1990001100A1 publication Critical patent/WO1990001100A1/en

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10036—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets
    • B32B17/10045—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets with at least one intermediate layer consisting of a glass sheet
    • B32B17/10055—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising two outer glass sheets with at least one intermediate layer consisting of a glass sheet with at least one intermediate air space
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B3/00—Window sashes, door leaves, or like elements for closing wall or like openings; Layout of fixed or moving closures, e.g. windows in wall or like openings; Features of rigidly-mounted outer frames relating to the mounting of wing frames
    • E06B3/66—Units comprising two or more parallel glass or like panes permanently secured together
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B17/00—Layered products essentially comprising sheet glass, or glass, slag, or like fibres
    • B32B17/06—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material
    • B32B17/10—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin
    • B32B17/10005—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing
    • B32B17/10009—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets
    • B32B17/10018—Layered products essentially comprising sheet glass, or glass, slag, or like fibres comprising glass as the main or only constituent of a layer, next to another layer of a specific material of synthetic resin laminated safety glass or glazing characterized by the number, the constitution or treatment of glass sheets comprising only one glass sheet
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E—FIXED CONSTRUCTIONS
    • E06—DOORS, WINDOWS, SHUTTERS, OR ROLLER BLINDS IN GENERAL; LADDERS
    • E06B—FIXED OR MOVABLE CLOSURES FOR OPENINGS IN BUILDINGS, VEHICLES, FENCES OR LIKE ENCLOSURES IN GENERAL, e.g. DOORS, WINDOWS, BLINDS, GATES
    • E06B5/00—Doors, windows, or like closures for special purposes; Border constructions therefor
    • E06B5/10—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes
    • E06B5/12—Doors, windows, or like closures for special purposes; Border constructions therefor for protection against air-raid or other war-like action; for other protective purposes against air pressure, explosion, or gas
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F41—WEAPONS
    • F41H—ARMOUR; ARMOURED TURRETS; ARMOURED OR ARMED VEHICLES; MEANS OF ATTACK OR DEFENCE, e.g. CAMOUFLAGE, IN GENERAL
    • F41H5/00—Armour; Armour plates
    • F41H5/02—Plate construction
    • F41H5/04—Plate construction composed of more than one layer
    • F41H5/0407—Transparent bullet-proof laminatesinformative reference: layered products essentially comprising glass in general B32B17/06, e.g. B32B17/10009; manufacture or composition of glass, e.g. joining glass to glass C03; permanent multiple-glazing windows, e.g. with spacing therebetween, E06B3/66

Definitions

  • This invention relates to an improvement in bullet resistant glass screens in particular for use in security applications.
  • Bullet proof glass comprises a laminate of generally heat treated annealed 394-472 mils (10-12 mm) glass sheets. For example, four sheets of this special glass are used to form a final laminate. This results in a sheet of glass which is from 1576-1970 mils (40-50 mm) thick. This makes the laminate expensive, difficult to machine and heavy to manipulate.
  • U.S. patent 4,774,143 both in the name of General Electri Company.
  • the United Kingdom patent describes a glazed structure having a back laminate comprising a plurality o laminae of polycarbonate, glass or solid resinous materials, with at least one of said laminae being of polycarbonate, and a front laminate comprising a pluralit of glass laminae, including a front lamina and a back lamina each of the latter laminae having a thickness of from 30 to 220 mils (0.76 to 5.59mm) and an intermediate glass core having a thickness greater than either the front or the back lamina.
  • the core in turn may be a single lamina or a plurality of laminae and preferably have a thickness of 220 to 1000 mils (5.59 to 25.4mm) .
  • the U.S. patent describes a transparent laminated window structure comprising a continuous inner layer of thermoplastic material, and an outer layer substantially parallel to the inner layer including at least a first course of discreet, mutually spaced glass segments, with the space between adjacent segments containing an adhesiv material.
  • the window structure may further comprise a strip of elastomeric material compressed between the inne and outer layers so as to define a gap between the layers
  • a projectile will only fracture that segment and will not cause cracking in adjacent, mutually spaced segments in the same course, allowing a high degree of visibility through the window structure upon impact by a projectile.
  • the glass segments are themselves composed of glass laminae making the structure complex, thick and bulky. Both these prior art specifications describe structures which have a front panel which is a laminate made with several glass laminae, characteristic of "bulle proof glass”. Both of these specifications describe the use of an air gap between the front and back laminates of the structures.
  • the air gap only adds to improve the optical characteristics of the double glazed laminate structure.
  • the gas gap is described as not critical to the invention but merely included where the window structure may be exposed to alternating high and low temperature environments which might cause warpage between the front and rear panels of the structure.
  • a bullet resistant glass screen including a plurality of sheets o glass, each sheet of glass having applied to at least on surface thereof a shatter resistant security film and ea sheet of glass being separated from a neighbouring sheet of glass by a given separation.
  • each sheet has a layer of the security film applied to each of the front and rear surfaces, whi the gap between neighbouring sheets is filled with air.
  • the type of film that can be used for example is a polyester security film manufactured as shatter resistan film by the company 3M (Minnesota, Mining and Manufacturing Company) . This film is applied to the surface of a glass sheet to prevent shattering of the sheet and the spraying of glass fragments.
  • the film has water activated pressure sensitive adhesive to bond it t the glass surface.
  • FIG. 1 shows a schematic of the top half of a security screen according to the invention. For reasons of symmetry the bottom half is not shown. PREFERRED MODES OF PERFORMING THE INVENTION
  • a security screen 1 comprises set of four sheets of window glass 2, 3, 4, and 5 respectively separated by a series of gaps, 6, 7 and 8.
  • glass sheet 2 will be considered the front of the screen 1.
  • the four sheets of glass, 2, 3, 4 and 5 are held in their fixed spatial relationship by a frame 9.
  • the frame 9 can be any suitable structure made of material commonly used in the trade for example metal extrusion, wood or plastic.
  • Each of the sheets, 2, 3, 4 and 5 has applied to its front and rear surface a sheet of shatter resistant film 10.
  • the spaces 6, 7 and 8 between the sheets 2, 3, 4 and 5 is filled with air.
  • the film 10 is applied to the faces of the sheets 2, 3, 4 and 5 in the usual manner for this type of shatter resistant film.
  • this is a polyester film having a water activated, pressure sensitive adhesive.
  • the sheets of glass 2, 3, 4 and 5 can be standard window glass.
  • several test were performed with a .22 high velocity rifle. In the first test 197 mils (5 mm) fixed sheets of glass were used with a gap of 125 mils (3.175 mm) .
  • a polyester shatter resistant film from 3M having a thickness of 7.09 mils (.18 mm) was used.
  • a single shot fired at the glass screen resulted in the front sheet 2 being shattered but without the film 10 on the rear surface of that sheet being penetrated.
  • the second sheet of glass namely sheet 3 of Figure 1 fractured presumably as a result of the shock waves emanating from the impact.
  • the glass-polyester film laminate is a composite structure with the film increasing the tensile strength the glass sheet alone. This means that the structure ca be deformed to a greater degree (absorb more kinetic energy) before fracturing occurs. The more kinetic ener is absorbed, the slower the bullet moves after fracturin the sheet of glass.
  • a projectile fired from a firearm can travel at a supersonic speed producing shock waves. Damage to a glass sheet will thus occur as a result of both the high kinetic energy of the projectile and the energy associat with the shock waves. As it is understood in the presen invention, these energies are efficiently absorbed by th multiple layers of the glass in two ways.
  • the kinetic energy of the projectile is absorbed more efficiently in each sheet by increasing the tensile strength of the gla sheet alone. This is done by securely bonding the thin layer of security film to one or both faces of the glass sheet.
  • the air gap between sheets is used to dissipate t energy of the shock waves. It is the combination of thes two aspects of the invention that provides an efficient bullet resistant screen.
  • Screens can be made with air gaps or separations bet glass sheets of 31.3-3846 mils (approx. 1-100 mm) and gla sheets of 78-473 mils (2-12 mm) thicknesses can be employ depending on the requirements of a given application. Th separation between sheets and the thicknesses of sheets c varied for a particular screen, as can the number of shee used in a screen as required.
  • the present invention therefore provides a bullet resistant screen for use in such areas as the security cages for bank tellers and at other installations such as service stations where visibility in addition to security is required.
  • the present invention is capable of being assembled on site using the skills of an ordinary glazier and without the need to resort to special tools to cut the glass sheets. It is contemplated that the shatter resistant film will normally be applied at manufacture saving this one step in assembly of the security screen. However it is to be understood that this is not necessary.
  • the security screen could be made with as few as two sheets of glass, depending on the application.
  • each sheet of glass as having a film on. both sides of the sheet of glass it is also contemplated that a sheet of glass may only be laminated on one face of the sheet. Equally, the outermost sheets may only have the film applied on their internal face with their external surfaces free of a laye of film.
  • Other thicknesses of glass or combinations of glass layers of different thicknesses as well as other types of glass as described in the above embodiment are also contemplated.

Abstract

A bullet resistant glass screen (1) is described comprising a number of glass sheets (2-5). The sheets (2-5) are separated by an air gap (6-8) and each sheet has on at least one surface a security film (10) preferably made of polyester. Each sheet (2-5) may have the film (10) on both the front and the rear surface. Increasing the air gap increases the resistance of the structure to penetration by a projectile. Standard thicknesses of window glass can be used. The polyester film can be adhered to the glass sheets by a pressure sensitive adhesive.

Description

BU LET RESISTANT GLASS
FIELD OF INVENTION
This invention relates to an improvement in bullet resistant glass screens in particular for use in security applications.
BACKGROUND OF THE INVENTION
Bullet proof glass comprises a laminate of generally heat treated annealed 394-472 mils (10-12 mm) glass sheets. For example, four sheets of this special glass are used to form a final laminate. This results in a sheet of glass which is from 1576-1970 mils (40-50 mm) thick. This makes the laminate expensive, difficult to machine and heavy to manipulate.
Other glazed structures for resisting the impact of projectiles are described in U.K. patent 2,098,650 and
U.S. patent 4,774,143 both in the name of General Electri Company. The United Kingdom patent describes a glazed structure having a back laminate comprising a plurality o laminae of polycarbonate, glass or solid resinous materials, with at least one of said laminae being of polycarbonate, and a front laminate comprising a pluralit of glass laminae, including a front lamina and a back lamina each of the latter laminae having a thickness of from 30 to 220 mils (0.76 to 5.59mm) and an intermediate glass core having a thickness greater than either the front or the back lamina. The core in turn may be a single lamina or a plurality of laminae and preferably have a thickness of 220 to 1000 mils (5.59 to 25.4mm) . The U.S. patent describes a transparent laminated window structure comprising a continuous inner layer of thermoplastic material, and an outer layer substantially parallel to the inner layer including at least a first course of discreet, mutually spaced glass segments, with the space between adjacent segments containing an adhesiv material. The window structure may further comprise a strip of elastomeric material compressed between the inne and outer layers so as to define a gap between the layers As the window structure comprises a number of segments a projectile will only fracture that segment and will not cause cracking in adjacent, mutually spaced segments in the same course, allowing a high degree of visibility through the window structure upon impact by a projectile. The glass segments are themselves composed of glass laminae making the structure complex, thick and bulky. Both these prior art specifications describe structures which have a front panel which is a laminate made with several glass laminae, characteristic of "bulle proof glass". Both of these specifications describe the use of an air gap between the front and back laminates of the structures. In the United Kingdom patent the air gap only adds to improve the optical characteristics of the double glazed laminate structure. In the U.S. patent the gas gap is described as not critical to the invention but merely included where the window structure may be exposed to alternating high and low temperature environments which might cause warpage between the front and rear panels of the structure.
Either of these structures would be complex to manufacture, could not be made on site, and would be hea and expensive.
SUMMARY OF THE INVENTION
The present invention seeks to overcome these disadvantages i the prior art or at least to substantially ameliorate them by providing a bullet resistant glass screen including a plurality of sheets o glass, each sheet of glass having applied to at least on surface thereof a shatter resistant security film and ea sheet of glass being separated from a neighbouring sheet of glass by a given separation. Preferably, each sheet has a layer of the security film applied to each of the front and rear surfaces, whi the gap between neighbouring sheets is filled with air. The type of film that can be used for example is a polyester security film manufactured as shatter resistan film by the company 3M (Minnesota, Mining and Manufacturing Company) . This film is applied to the surface of a glass sheet to prevent shattering of the sheet and the spraying of glass fragments. The film has water activated pressure sensitive adhesive to bond it t the glass surface.. DESCRIPTION OF -THE DRAWINGS
Figure 1 shows a schematic of the top half of a security screen according to the invention. For reasons of symmetry the bottom half is not shown. PREFERRED MODES OF PERFORMING THE INVENTION As shown in Figure 1, a security screen 1 comprises set of four sheets of window glass 2, 3, 4, and 5 respectively separated by a series of gaps, 6, 7 and 8.
For the purpose of illustration, glass sheet 2 will be considered the front of the screen 1. The four sheets of glass, 2, 3, 4 and 5 are held in their fixed spatial relationship by a frame 9. The frame 9 can be any suitable structure made of material commonly used in the trade for example metal extrusion, wood or plastic. Each of the sheets, 2, 3, 4 and 5 has applied to its front and rear surface a sheet of shatter resistant film 10. The spaces 6, 7 and 8 between the sheets 2, 3, 4 and 5 is filled with air.
The film 10 is applied to the faces of the sheets 2, 3, 4 and 5 in the usual manner for this type of shatter resistant film. As described above this is a polyester film having a water activated, pressure sensitive adhesive. The sheets of glass 2, 3, 4 and 5 can be standard window glass. For the embodiment as shown in Figure 1 several test were performed with a .22 high velocity rifle. In the first test 197 mils (5 mm) fixed sheets of glass were used with a gap of 125 mils (3.175 mm) . A polyester shatter resistant film from 3M having a thickness of 7.09 mils (.18 mm) was used. A single shot fired at the glass screen resulted in the front sheet 2 being shattered but without the film 10 on the rear surface of that sheet being penetrated. The second sheet of glass namely sheet 3 of Figure 1 fractured presumably as a result of the shock waves emanating from the impact. A second test with a panel of glass sheets having- th same characteristics as for the first test but using 158 mils (4 mm) thick glass was performed. Several shots wer fired. The first shot produced results similar to the first test. A second shot resulted in the third sheet of glass, namely sheet 4 in Figure 1 being broken while a third shot resulted in the fourth sheet of glass, namely sheet 5 in Figure 1 also being broken but without the bullet penetrating beyond that sheet of glass.
The glass-polyester film laminate is a composite structure with the film increasing the tensile strength the glass sheet alone. This means that the structure ca be deformed to a greater degree (absorb more kinetic energy) before fracturing occurs. The more kinetic ener is absorbed, the slower the bullet moves after fracturin the sheet of glass.
A projectile fired from a firearm can travel at a supersonic speed producing shock waves. Damage to a glass sheet will thus occur as a result of both the high kinetic energy of the projectile and the energy associat with the shock waves. As it is understood in the presen invention, these energies are efficiently absorbed by th multiple layers of the glass in two ways. The kinetic energy of the projectile is absorbed more efficiently in each sheet by increasing the tensile strength of the gla sheet alone. This is done by securely bonding the thin layer of security film to one or both faces of the glass sheet. The air gap between sheets is used to dissipate t energy of the shock waves. It is the combination of thes two aspects of the invention that provides an efficient bullet resistant screen.
Tests done on arrays -of- glass sheets coated on each side with polyester film have shown an improved resistanc to damage as the separation between each sheet is increased. This result is presumably due to the dissipation of the shock waves in the air gap between eac sheet.
Screens can be made with air gaps or separations bet glass sheets of 31.3-3846 mils (approx. 1-100 mm) and gla sheets of 78-473 mils (2-12 mm) thicknesses can be employ depending on the requirements of a given application. Th separation between sheets and the thicknesses of sheets c varied for a particular screen, as can the number of shee used in a screen as required.
Other manufacturers of security film products suitable for use with the invention are DTI (Deposition Technology Industries ) and Martin's Processing
(Australia) Pty. Ltd., who market a safety film under the Registered Trade Mark PROFILON.
The present invention therefore provides a bullet resistant screen for use in such areas as the security cages for bank tellers and at other installations such as service stations where visibility in addition to security is required. The present invention is capable of being assembled on site using the skills of an ordinary glazier and without the need to resort to special tools to cut the glass sheets. It is contemplated that the shatter resistant film will normally be applied at manufacture saving this one step in assembly of the security screen. However it is to be understood that this is not necessary. Though the invention has been described above with respect to a preferred embodiment it is to be understood that the invention has other embodiments within the knowledge of a person of ordinary skill in the art, for example, the security screen could be made with as few as two sheets of glass, depending on the application. In addition though the preferred embodiment shows each sheet of glass as having a film on. both sides of the sheet of glass it is also contemplated that a sheet of glass may only be laminated on one face of the sheet. Equally, the outermost sheets may only have the film applied on their internal face with their external surfaces free of a laye of film. Other thicknesses of glass or combinations of glass layers of different thicknesses as well as other types of glass as described in the above embodiment are also contemplated.

Claims

1. A bullet resistant glass screen including a plurality of sheets of glass, each sheet of glass having applied to at least one surface thereof. a shatter resistant security film and each sheet of glass being separated from a neighbouring sheet of glass by a given separation.
2. A bullet resistant glass screen as claimed -in Claim 1 wherein said gap between each sheet of glass is filled with air.
3. A bullet resistant glass screen as claimed in Claim 2 wherein said each sheet of glass has a shatter resistant security film applied to a front and a rear surface thereof .
4. A bullet resistant glass screen as claimed in Claim 1 wherein said film comprises a polyester film.
5. A bullet resistant glass screen as claimed in Claim 2 wherein said film comprises a polyester film.
6. A bullet resistant glass screen as claimed in Claim 3 wherein said film comprises a polyester film.
7. A bullet resistant glass screen as claimed in Claim I wherein said glass sheets are 2-12 mm (78-473 mils) thick and said given separation is in the range 1-100 mm (31.3- 3846 mils) .
8.. A bullet resistant glass screen as claimed in Claim 2 wherein said glass sheets are 2-12 mm (78-473 mils) thick and said given separation is in the range 1-100 mm (31.3- 3846 mils) .
9. A bullet resistant glass screen as claimed in Claim 3 wherein said glass sheets are 2-12 mm (78-473 mils) thick and said given separation is in the range 1-100 mm (31.3- 3846 mils) .
PCT/AU1989/000302 1988-07-18 1989-07-18 Bullet resistant glass WO1990001100A1 (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
BR898907560A BR8907560A (en) 1988-07-18 1989-07-18 BULLET RESISTANT GLASS SCREEN
KR1019900700581A KR900702167A (en) 1988-07-18 1989-07-18 Bulletproof glass

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AUPI936188 1988-07-18
AUPI9361 1988-07-18

Publications (1)

Publication Number Publication Date
WO1990001100A1 true WO1990001100A1 (en) 1990-02-08

Family

ID=3773221

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/AU1989/000302 WO1990001100A1 (en) 1988-07-18 1989-07-18 Bullet resistant glass

Country Status (7)

Country Link
EP (1) EP0445118A4 (en)
JP (1) JPH03506056A (en)
KR (1) KR900702167A (en)
CN (1) CN1032662C (en)
BR (1) BR8907560A (en)
NZ (1) NZ229985A (en)
WO (1) WO1990001100A1 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2731512A1 (en) * 1995-03-06 1996-09-13 Giat Ind Sa Transparent armoured panel to protect vehicle against projectiles
EP0807797A2 (en) * 1996-05-14 1997-11-19 Agomer Gesellschaft mit beschränkter Haftung Bullet resistant glass and use thereof
KR100372374B1 (en) * 2000-10-30 2003-02-19 조동하 Manufacture method of bulletproof glass

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7762175B1 (en) * 2006-11-30 2010-07-27 Honeywell International Inc. Spaced lightweight composite armor
CN104048560A (en) * 2014-06-25 2014-09-17 刘百川 Multi-layer clad sheet plate
FR3029454B1 (en) * 2014-12-04 2020-09-25 Saint Gobain ARMORED WINDOWS MANUFACTURED FROM LARGE SERIES LEAF WINDOWS CONSTITUENTS

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US2310402A (en) * 1941-02-28 1943-02-09 Pittsburgh Plate Glass Co Glass insulation unit
US2336544A (en) * 1939-04-22 1943-12-14 Libbey Owens Ford Glass Co Method of fabricating multiple glass sheet glazing units
US2401552A (en) * 1943-06-02 1946-06-04 Pittsburgh Plate Glass Co Window construction
GB603857A (en) * 1945-11-01 1948-06-24 Stone J & Co Ltd Improvements relating to glass panes for windows
FR2294315A1 (en) * 1974-12-09 1976-07-09 Chalons Francois Transparent panel with good heat and sound insulation - has two panels separated by low pressure space with spacers and edge seal
US4614676A (en) * 1982-07-05 1986-09-30 Saint-Gobain Vitrage Multiple window glass having thermal and acoustical insulating properties

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FR2474477A1 (en) * 1979-12-03 1981-07-31 Ravaut Jean Burglar-proof double glazing - where both glass panels are covered with self-adhesive, anti-burglar foil
FR2483845A1 (en) * 1980-06-06 1981-12-11 Delehonte Marc Bulletproof screens with close spaced panels - of glass and polycarbonate, coated on internal faces with anti:shatter polyester film

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2336544A (en) * 1939-04-22 1943-12-14 Libbey Owens Ford Glass Co Method of fabricating multiple glass sheet glazing units
US2310402A (en) * 1941-02-28 1943-02-09 Pittsburgh Plate Glass Co Glass insulation unit
US2401552A (en) * 1943-06-02 1946-06-04 Pittsburgh Plate Glass Co Window construction
GB603857A (en) * 1945-11-01 1948-06-24 Stone J & Co Ltd Improvements relating to glass panes for windows
FR2294315A1 (en) * 1974-12-09 1976-07-09 Chalons Francois Transparent panel with good heat and sound insulation - has two panels separated by low pressure space with spacers and edge seal
US4614676A (en) * 1982-07-05 1986-09-30 Saint-Gobain Vitrage Multiple window glass having thermal and acoustical insulating properties

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of EP0445118A4 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2731512A1 (en) * 1995-03-06 1996-09-13 Giat Ind Sa Transparent armoured panel to protect vehicle against projectiles
EP0807797A2 (en) * 1996-05-14 1997-11-19 Agomer Gesellschaft mit beschränkter Haftung Bullet resistant glass and use thereof
EP0807797A3 (en) * 1996-05-14 1998-09-09 Agomer Gesellschaft mit beschränkter Haftung Bullet resistant glass and use thereof
KR100372374B1 (en) * 2000-10-30 2003-02-19 조동하 Manufacture method of bulletproof glass

Also Published As

Publication number Publication date
JPH03506056A (en) 1991-12-26
CN1052820A (en) 1991-07-10
EP0445118A4 (en) 1991-11-06
EP0445118A1 (en) 1991-09-11
CN1032662C (en) 1996-08-28
BR8907560A (en) 1991-06-18
NZ229985A (en) 1992-01-29
KR900702167A (en) 1990-12-06

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