METAL SECTION BARS FOR BULLET-PROOF FRAMES

Abstract: A set of metal section bars for bullet-proof door and window frames is proposed, each formed by at least one respective tubular casing (1; 23; 44; 60; 100, 125) having a transversal cross-section formed substantially in the shape of an 'L', a 'Z', a 'T', that is provided in the proximity of an external wall (2; 24; 45; 64, 65; 105), with at least one seat (10; 32; 50; 72, 73; 110) suitable for housing at least one bullet-proof plate (154), and is provided, in the proximity of an internal wall (3; 25; 46; 76; 112), with at least one other seat (15; 37; 54; 84; 120) suitable for housing at least one other bullet-proof plate (155), so that it is possible to accomplish the most appropriate degree of bullet-proofing in relation to the use of the window and door frames.

Description: Metal secti on bars for bul l et-proof frames k k k -k -k D E S C R I P T I O N The present invention relates to a set of metal section bars for bullet-proof frames, such as windows, shop-windows, glass doors. Metal section bars are known for bullet-proof door and window frames, formed by a tubular casing having a substantially L-shaped transversal cross-section, comprising an external wall, an internal wall, and transversal walls, and provided, in the proximity of said external wall, with seats for housing bullet-proof olates, preferably made of steel. These section bars are used both for fixed frames and for mobile frames of bullet-proof door and window frames. The main problem of these door and window frames is represented by an insubstantial resistance to the impact of bullets with an enhanced capacity of destruction; thus such a bullet-proofing is inadequate in case of very heavy strains, such as those to which doors and windows of establishments particularly exposed to robberies, for example banks, jeweller's shops, etc., are subjected. The main object of the present invention is a set of metal section bars for bullet-proof door and window frames, capable of offering a resistance to the impact of bullets that is optimized for the different uses. Another object of the invention is a set of section bars for bullet-proof door and window frames, of a form such as to allow the adaptation of their resistance to the specific use, during the assembly stage. According to these objects the invention relates to a set of section bars for bullet-proof door and window frames, each formed by at least one respective tubular casing having a transversal cross-section formed substantially in the shape of an "L", a "Z", a "T", comprising at least one external wall, an internal wall and transversal walls, and provided, in the proximity of said external wall, with at least one seat suitable for housing at least one bullet-proof plate, characterized in that said tubular casing is provided, in the proximity of said internal wall, with at least one other seat suitable for housing at least one other bullet-proof plate. According to a preferred embodiment the abovementioned tubular casing having a substantially "Z"-shaped transversal cross-section, comprises a tubular element with a substantially ,r L"-shaped transversal cross-section and a tubular element with a substantially rectangular transversal cross-section, said tubular elements being connected by an intermediate wall provided with a respective seat suitable for housing a bullet-proof plate. According to another preferred embodiment the abovementioned tubular casing having a substantially "T"-shaped transversal cross-section, comprises a tubular element with a substantially "L"-shaped transversal cross-section and two tubular elements with a substantially rectangular transversal cross-section, said tubular elements being connected by an intermediate wall provided with a respective seat suitable for housing a bullet-proof plate. Preferably the abovementioned section bars are provided with means for connecting to at least one specially-shaped section bar formed by at least one tubular element having a substantially "L"-shaped transversal cross-section, and provided with at least one seat suitable for housing a bullet-proof plate. The proposed metal section bars are especially efficient because they allow the bullet-proofing to be optimized in relation to the severity of the envisaged use, inserting one or two bullet-proof plates in the special seats obtained in the proximity of the internal wall. Features and advantages of the invention shall now be illustrated with reference to embodiments of the invention illustrated as non-limiting examples in the enclosed drawings, wherein: Fig. 1 is a transversal cross-sectional view of an "L"-shaped metal section bar for a fixed frame of a bullet-proof door or window frame, accomplished according to the invention; Fig. 2 is a transversal cross-sectional view of a "Z"-shaped metal section bar for a mobile frame of a bullet-proof door, accomplished according to the invention; Fig. 3 is a transversal cross-sectional view of a "T"-shaped metal section bar for a mobile frame of a bullet-proof door, accomplished according to the invention; Fig. 4 is a transversal cross-sectional view of a "T"-shaped metal section bar for a mobile frame of a bullet-proof window, accomplished according to the invention; Fig. 5 is a transversal cross-sectional view of a "Z"-shaped metal section bar for a frame of a bullet-proof window, accomplished according to the invention; Fig. 6 is a transversal cross-sectional view of a "T"-shaped metal section bar for a cross-piece of a bullet-proof door or window frame, accomplished according to the invention; Fig. 7 shows a transversal cross-section of a specially-shaped metal section bar for the section bars of Figs. 1, 2, 3; Figs. 8 and 9 show a transversal cross-section of metal section bars accessory for the section bars of Figs. 2, 3, 4, 5; Fig. 10 is a transversal cross-sectional view of a specially-shaped metal section bar for the section bar of Fig. 1; Figs. 11 and 12 are transversal cross-sectional views of the fixed frame and of the mob le frame of a bullet-proof door, accomplished with the section bars of Figs. 1, 2, 3; Figs. 13 and 14 are transversal cross-sectional -views of the fixed frame and of the mobile frame of a bullet-proof window, accomplished with the section bars of Figs. 1, 4, 5. There is shown in Fig. 1 a metal section bar, made of aluminium alloy, formed by a tubular casing 1 with a substantially "L"-shaped transversal cross-section. The tubular casing 1 comprises an external wall 2, an internal wall 3, two transversal walls 4 and 5, and shaped walls 6 and 7, that, with fins 8, form, in the proximity of the external wall 2, two seats 10, suitable for housing two bullet-proof plates, as shall be illustrated later. The tubular casing 1 also comprises shaped walls 11 and 12, that, with fins 13, form, in the proximity of the internal wall 3, two seats 15, suitable for housing bullet-proof plates, as shall be illustrated Later. The tubular casing 1 is provided with seats 16 for seals, and with tangs 17 and 18, that are used for mounting a specially-shaped section bar, as shall be illustrated later; the tubular casing 1 is also provided with a seat 19, between the fins 8 and 13, for an assembly bracket, not shown, as it is known, that is used to join two section bars 1, mounted orthogonal to form a fixed frame of a bullet-proof door or window, described later; the section bar 1 is also provided with a seat 20, between the fins 21, for mounting an element for the connection to a counterframe fastened to the jamb. There is shown in Fig. 2 a metal section bar of aluminium alloy, formed by a tubular casing 23 with a substantially "Z"-shaped transversal cross-section formed. The tubular casing 23 comprises an external wall 24, an internal wall 25, two transversal walls 26 and 27, and shaped walls 28 and 29, that, with fins 30, form, in the proximity of the external wall 24, two seats 32, suitable for housing two bullet-proof plates, as shall be illustrated later. The tubular casing 23 also comprises shaped walls 33 and 34, that, with fins 35, form, in the proximity of the internal wall 25, two seats indicated with 37, suitable for housing bullet-proof plates, as shall be illustrated later. The tubular casing 23 is provided with seats 38 for seals, and with tangs 39 and 40, that are used for mounting specially-shaped section bars, as shall be illustrated later; the tubular casing 23 is also provided with seats 41, between the fins 30 and 35, for assembly brackets, not shown, as they are known, that are used to join two section bars 23, mounted orthogonal to form a mobile frame of a bullet-proof door, described later. There is shown in Fig. 3 a metal section bar of aluminium alloy, formed by a tubular casing 44 with a substantially "T"-shaped transversal cross-section. The tubular casing 44 comprises an external wall 45, an internal wall 46, two transversal walls 47 and 48, and shaped walls 49, that, with fins 51, form, in the proximity of the external wall 45, two seats indicated with 50, suitable for housing two bullet-proof plates, as shall be illustrated later. The tubular casing 44 also comprises shaped walls 52, that, with fins 53, form, in the proximity of the internal wall 46, two seats 54, suitable for housing bullet-proof plates, as shall be illustrated later. The tubular casing 44 is provided with seats 55 for seals, and with tangs 56 and 57, that are used for mounting specially-shaped section bars, as shall be illustrated later; the tubular casing 44 is also provided with seats 58, between the fins 51 and 53, for assembly brackets, not shown, as they are known, that are used to join a section bar 44 and a section bar 23, mounted orthogonal to form a mobile frame of a bullet-proof door, described later. There is shown in Fig. 4 a metal section bar of aluminium alloy, formed by a tubular casing 60 with a substantially "T"-shaped transversal cross-section. The tubular casing 60 comprises a tubular element 61 with a substantially "L"-shaped transversal cross-section and two tubular elements 62 and 63 with a substantially rectangular transversal cross-section. The tubular elements 62 and 63 are formed by respective external walls 64 and 65 and by respective shaped walls 66, 67 and 68, 69; the shaped walls 66 and 67 form, with fins 70, in the proximity of the external wall 64 two seats 72 suitable for housing bullet-proof plates and the shaped walls 68 and 69 form, in the proximity of the external wall 65, a seat 73 suitable for housing a bullet-proof plate, as shall be illustrated later; the tubular elements 62 and 63 also comprise seats 74 for seals. The tubular element 61 comprises an intermediate wall 75, an internal wall 76, two transversal walls 77 and 78, and shaped walls 79 and 80, that, with respective fins 81 and 82, form, in the proximity of the intermediate wall 75 and in the proximity of the internal wall 76, respective seats 83 and 84, suitable for housing bullet-proof plates, as shall be illustrated later. The tubular element 61 is provided with a tang 87 and with a tang 85, that is used for mounting a pane-holding section bar, as shall be illustrated later, and with two seats 86 suitable for supporting vertically movable rods of a handle for closing the door or window frame, as shall be illustrated later.' There is shown in Fig. 5 a metal section bar of aluminium alloy, formed by a tubular casing 100 with a substantially "Z"-shaped transversal cross-section. The tubular casing 100 comprises a tubular element 101 with a substantially "L"-shaped transversal cross-section, a tubular element 102 with a substantially rectangular transversal cross-section, and an abutment tang 103, provided with a seat 104 for a seal. The tubular element 102 is formed by an external wall 105 and by shaped walls 106 and 107 that form, with fins 108, in the proximity of the external wall 105 two seats 110 suitable for housing bullet-proof plates, as shall be illustrated later. The tubular element 101 comprises an intermediate wall 111, an internal wall 112, two tranversal walls 113 and 114, and shaped walls 115 and 116 that, with respective fins 117 and 118, form, in the proximity of the intermediate wall 111 and in the proximity of the internal wall 112, respective seats 119 and 120, suitable for housing bullet-proof plates, as shall be illustrated Later. The tubular element 101 is provided with a tang 109 and with a tang 121, that is used for mounting a pane-holding section bar, as shall be illustrated later, and with a seat 122 suitable for supporting a vertically movable rod of a handle for closing a door or window frame, as shall be illustrated later. There is shown in Fig. 6 a metal section bar of aluminium alloy for a cross-piece that acts as a dividing element between a Lower pane of glass and an upper pane of glass of a bullet-proof door or window. The abovementioned section bar is formed by a tubular casing 125 with a substantially "T"-shaped transversal cross-section, like the section bar represented in Fig. 3, so that like parts are indicated with like numbers. In this case with the external wall 45 there is integral a shaped wall 126 that, together with the shaped walls 49, forms the seats 50 suitable for housing two pairs of bullet-proof plates. There is shown in Fig. 7 a specially-shaped section bar 130 in aluminium alloy, formed by a tubular element 131, with a substantially "L"-shaped transversal cross-section, and by a shaped fin 132. The section bar 130 is provided with seats 133 and 134, suitable for housing a bullet-proof plate and angle bar, as shall be illustrated later, and with a seat 135 suitable for housing an element of a hinge. There are shown in Figs. 8 and 9, respectively, a section bar 136 for holding a pane of glass with screws, provided with a seat 137 of a seal, and a snap-on covering section bar 138, to be fitted over the section bar 136, as shall be illustrated later. There is shown in Fig. 10 a specially-shaped section bar 140 in aluminium alloy, formed by a tubular element 141, with a substantially "L"-shaped transversal cross-section, and by a shaped fin 142. The section bar 140 is provided with a seat 143, suitable for housing a bullet-proof plate, as shall be illustrated later, and with a seat 144 suitable for housing an element of a hinge. There are shown in Figs. 11 and 12, respectively with 150, 151, 152 and 153 a fixed frame, a mobile frame of a first wing of a door, a movable frame of a second wing of a door and bullet-proof panes of glass of a bullet-proof door. The fixed frame 150 is formed by the "L"-shaped section bars 1 of Fig. 1, joined by means of assembly brackets, not shown, in which two bullet-proof plates 154 are mounted, preferably made of steel, housed in the seats 10 and two bullet-proof plates 155, preferably made of steel, housed in the seats 15. Between the walls 7 and 12 and on the fin 17 of the section bar 1 there is mounted, by means of a screw, not shown, a specially-shaped metal section bar 130 of Fig. 7, in whose seats 133 and 134 there are mounted a bullet-proof plate 156 and a bullet-proof angle bar 157, preferably made of steel. The section bars 1 are fastened to a counterfra e, in turn fastened to a jamb, through a connecting element, not shown, inserted in the seat provided 20. An element of a hinge, not shown, is mounted in the seat 135. A seal housed in a seat 16 is indicated with 158. The mobile frame 151 of the first wing of the door comprises a lateral upright and two cross-pieces formed by "Z"-shaped metal section bars 23 of Fig. 2, and by a central upright formed by a "T"-shaped metal section bar 44 of Fig. 3, joined together by means of the usual assembly brackets. As shown in Fig. 11, in the section bars 23 there are mounted two bullet-proof plates 154 preferably made of steel, housed in the seats 32 and two bullet-proof plates 155, preferably made of steel, housed in the seats 37. Between the walls 28 and 33 and on the fin 39 of the section bar 23 there is mounted, fastened by means of a screw, not shown, a specially-shaped section bar 130 of Fig. 7, in whose seats 133 and 134 there are mounted a bullet-proof plate 156 and a bullet-proof angle bar 157, preferably made of steel. In the seat 135 of the section bar 130 there is mounted an element of a hinge, not shown, that engages with the element of a hinge fastened to the specially-shaped section bar 130 of the section bar 1. There is indicated with 165 a screw whereby it is possible to fasten to the section bar 23 a pane-holding section bar 136 like that of Fig. 8, on which a snap-on covering section bar 138 is fitted, like that of Fig. 9. Seals, housed in the seats 38 and 137, that engage with the bullet-proof glass 153, are indicated with 166. As shown in Fig. 12, in the "T"-shaped section bar 44 of the central upright of the first wing of the door there are mounted bullet-proof plates 154 and 155, preferably made of steel, and in the specially-shaped section bar 130, fastened to the section bar 44, there are mounted a bullet-proof plate 156 and a bullet-proof angle bar 157, preferably made of steel. A pane-holding section bar 136 with the corresponding covering section bar 138 is also fastened to the section bar 44, by means of a screw 165. The mobile frame 152 of the second wing of the door is formed by "Z"-shaped metal section bars 23, like that of the mobile frame 151 of the first wing of the door shown in Fig. 11, and like parts are indicated with like numbers. The rods for closing the doors, that move vertically in the seats 135 of the specially-shaped section bars 130, are not shown, as they are known. There are indicated in Figs. 13 and 14 respectively with 170, 171, 172 and 173 a fixed frame, a mobile frame of a first wing of a door, a movable frame of a second wing of the door and bullet-proof panes of glass of a bullet-proof window. The fixed frame 170 is formed by "L"-shaped section bars 1 of Fig. 1, like that of the fixed frame of the bullet-proof door shown in Fig. 11, and like parts are indicated with like numbers. Between the walls 7 and 12 and on the fin 17 of the section bar 1 there is mounted, by means of a screw, not shown, a specially-shaped metal section bar 140 like that of Fig. 10, in whose seat 143 there is mounted a bullet-proof plate 156, preferably made of steel, and in whose seat 144 there is mounted an element of a hinge, not shown. The mobile frame 171 of the first wing of the window comprises a lateral upright and two cross-pieces formed by "Z"-shaped metal section bars 100 of Fig. 5, and a central upright formed by a "T"-shaped metal section bar 60 of Fig. 4. As shown in Fig. 13, in the section bars 100 there are bullet-proof plates 154, preferably made of steel, housed in the seats 110 and bullet-proof plates 156 and 155, preferably made of steel, housed in the seats 119 and 120. In the seat 122 there is mounted an element of a hinge, not shown, that engages with the element of a hinge fastened to the specially-shaped section bar 130 of the section bar 1. Here again, a pane-holding section bar 136, on which the corresponding snap-on covering section bar 138 is fitted, is fastened to the section bar 100 by means of a screw 165. Seals, housed in the seats 104 and 137, for the glass 173, are indicated with 166. As shown in Fig. 14, in the "T"-shaped section bar 60 of the central upright there are mounted steel bullet-proof plates 154, housed in the seats 72 and 73, and steel bullet-proof plates 156 and 155, housed in the seats 83 and 84. A pane-holding section bar 136, with the corresponding covering section bar 138, is fastened to the section bar 60 by means of a screw 165. The mobile frame 172 of the second wing of the window is formed by "Z"-shaped metal section bars 100, like that of the mobile frame 171 of the first wing of the window shown in Fig. 13, and like parts are indicated with like numbers. The rods for closing the window, that move vertically in the seats 86 and 122 of the section bars 60 and 100, are not shown, as they are known. The mobile frames of the wings of the bullet-proof door and window described can comprise a cross-piece that divides a lower pane of glass 153 or 173 from an upper pane 153 or 173, accomplished by means of the metal section bar 125 of Fig. 6, provided with bullet-proof plates 154 and 155, respectively housed in the seats 50 and 54. With the section bars 1, 23, 44, 60, 100, 125 described above, different degrees of bullet-proofing can be obtained, because, in the corresponding seats provided (10, 15; 32, 37; 50, 54; 72, 73, 83, 84; 110, 119, 120; 133, 134; 143), it is possible to mount bullet-proof plates 154, 155, 156 and bullet-proof angle bars 157 in each section bar, in a variable number in relation to the severity of the envisaged use and to the necessary resistance to the impact of bullets.

Claims: C L A I M S 1. Set of metal section bars for bullet-proof door and window frames, each formed by at least one respective tubular casing (1; 23; 44; 60; 100, 125) having a transversal cross-section formed substantially in the shape of an "L", a "Z", a "T", comprising at least one external wall (2; 24; 45; 64, 65; 105), an internal wall (3; 25; 46; 76; 112) and transversal walls (4, 5; 26, 27; 47, 48; 77, 78; 113, 114), and provided, in the proximity of said external wall (2; 24; 45; 64, 65; 105), with at least one seat (10; 32; 50; 72, 73; 110) suitable for housing at least one bullet-proof plate (154), characterized in that said tubular casing (1; 23; 44; 60; 100, 125) is provided, in the proximity of said internal wall (3; 25; 46; 76; 112), with at least one other seat (15; 37; 54; 84; 120) suitable for housing at least one other bullet-proof plate (155). 2. Set of section bars according to claim 1, characterized in that the abovementioned tubular casing (100) having a substantially "Z"-shaped transversal cross-section, comprises a tubular element (101) with a substantially "L"-shaped transversal cross-section and a tubular element (102) with a substantially rectangular transversal cross-section, said tubular elements (101, 102) being connected by an intermediate wall (111) provided with a respective seat (119) suitable for housing a bullet-proof plate (156). 3. Set of section bars according to claim 1, characterized in that the abovementioned tubular casing (60) having a substantially "T"-shaped transversal cross-section, comprises a tubular element (61) with a substantially "L"-shaped transversal cross-section and two tubular elements (62, 63) with a substantially rectangular transversal cross-section, said tubular elements (61, 62, 63) being connected by an intermediate wall (75) provided with a respective seat (83) suitable for housing a bullet-proof plate (156). 4. Set of section bars according to claim 1, characterized in that they are provided with means (17, 18; 39, 40; 56, 57) for connecting to at least one specially-shaped section bar (130; 140) formed by at least one tubular element (131; 141) having a substantially "L"-shaped transversal cross-section, and provided with at least one seat (133, 134; 143) suitable for housing a bullet-proof plate (156). 5. Set of section bars according to claim 4, characterized in that the abovementioned specially-shaped section bar (130) is also provided with a seat (134) suitable for housing a bullet-proof angle bar (157). 6. Set of section bars according to claim 1, characterized in that to the abovementioned tubular casing (23; 44; 60; 100, 125) there is fastened with screws a section bar (136) for holding a pane of glass that is provided with a seat (137) for a seal (166) and on which a snap-on covering section bar (138) is fitted. 7. Set of section bars according to claim 1, characterized in that said seats (10, 15; 32, 37; 50, 54; 72, 73, 83, 84; 110, 119, 120; 133, 134; 143) are formed by shaped walls (6, 7, 11, 12; 28, 29, 33, 34; 49, 52; 66, 67, 68, 69, 80; 106, 107, 116) and fins (8, 13; 30, 35; 51, 53; 70, 82; 108, 118). 8. Set of section bars according to claim 1, characterized in that the abovementioned tubular casing (1; 23; 44; 60; 100, 125) is provided with seats (16; 38; 55; 74; 104) for seals (158). 9. Set of section bars according to claim 6, characterized in that the abovementioned bullet-proof plates (154, 155, 156) and bullet-proof angle bar (157) are preferably made of steel.

Inventors: ZANONI EDOARDO, ZANONI, EDOARDO
Applicants: HYDRO ALUMINIUM SYSTEMS SPA, HYDRO ALUMINIUM SYSTEMS S.P.A.
Application year: 1993
Main classification: E06B5
IPC codes: E06B3, E06B5