Classifications

• • 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
  • E06B5/11—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 burglary
  • E06B5/113—Arrangements at the edges of the wings, e.g. with door guards to prevent the insertion of prying tools

Definitions

• the present invention relates to a forced-entry guard for doors and windows, comprising a tubular profile which is angular in section and can be mounted along at least one of the frame sides, adjacent the gap between the frame and the door-leaf or the window-frame.
• Housebreaking on doors and windows that open inward or outward according to above, is often performed in such a way, that a sharp tool is forced into the gap between the frame and the leaf or window-frame respectively, and a bending force is imposed upon the tool, until lock bolts, striking plate or the hinges yield.
• One object of the present invention is to provide an effec- tive forced-entry guard, which leads to a substantial strengthening protection against forced entry, without expensive arrangements.
• the tubular profile houses stiffening means and in a non-visible way one end of a number of screw means which are intended for said mounting of said profile.
• the tubular profile with one mounting side abuts the outside of the door-leaf or the window-frame and projects substantially perpendicular to said outside with at least one side, which is located adjacent the border of the door-leaf or the window-frame.
• the stiffe ⁇ ning means comprises a substantially flat reinforcement rail of steel, which has been entered longitudinally into the tubular profile, said rail being affixed diagonally with one of its longitudinal edges adjacent said mounting side and with its other longitudinal edge adjacent said first side of the profile which is distal to the frame.
• the stiffening means may comprise a diagonal web which can be integrally manufactured with the tubular profile by means of extrusion.
• the tubular profile is internally provided with nut means for mounting bolts extending through the frame from its inner side.
• the tubu ⁇ lar profile is provided with a number of drill holes ar ⁇ ranged along the longitudinal direction of the profile, at opposite sides, said holes enabling the entrance of screws from the outside, for fastening the tubular profile on a frame, door- or window-leaf, and the tubular profile houses a U-shaped strip profile which is provided with a corre ⁇ sponding set of holes, and can be moved inside the tubular profile, from a first position enabling entering and tigh ⁇ tening of the screws, to a second position in which it covers the screw heads and can be secured in place.
• Fig. 1 is a section through a conventional window, which is subject to a forced-entry test
• Fig. 2 is a corresponding section through a window having a guard according to a first embodiment of the invention, which in a similar way is subject to a forced-entry test
• Fig. 3 shows in a side view shows a nut means used in the arrangement according to the invention
• Fig. 4 shows the nut means in Fig. 3 in an elevation view
• Fig. 5 is a perspective view of a window having a guard according to a second embodiment of the invention.
• the windows shown in Fig. 1 and 2 comprise a fixed frame 10, a pivotally on hinges 11 hinged window frame 12 and a set 13 of window panes.
• An espangnolette lock 14 is mounted at the opposite frame element 12a from the hinges 11, so that the lock may grip with a bolt 14a into a striking-plate in the frame 10.
• a sharp burglar tool 17 has been forced into the gap 16 between the fixed window frame 10 and the pivotal frame 12, in order to force the window open.
• the dotted line 18 illu- strates the angle of the resulting breaking force, which predominantly is directed outward.
• Fig. 2 shows a frame 10 which has been modified according to the invention.
• a tubular profile 19 of metal is rectang- ular in section and has been mounted with one side 19a against the outside of the frame, at least along three of the four frame elements and adjacent the corresponding borders of the window frame 12.
• the tubular profile 19 is provided with one side surface 19b near the border of the window frame 12, and is fastened by means of bolts 20, which have been entered from the inside of the frame via holes drilled in it, and screwed into nut means 21 within the tubular profile.
• a steel rail 22 has been entered longitudinally in such way that is held diagonally between two opposite cor- ners of the tubular profile, with the edge 22a which is nearest to the gap 16 facing outward from the frame, and the other edge 22b facing inward.
• this strengthening could be achieved by extruding the tubular profile with an integral diagonal web.
• a sharp burglar tool 17 has been forced into the gap 16 between the fixed frame 10 and the pivotally hinged frame 12, with the intention of forcing the window open.
• the arrow 23 illustrates the angle of the. resulting force, and its clear that the angle is pointing much less outward than the angle shown in Fig. 1.
• the tubular profile 19 mounted at the hinge side is pro ⁇ vided with countersunk recesses 19a for the hinges 11, so that these are about halfway recessed into the profile. This will act to prevent attacks onto the hinges.
• Fig. 3 and 4 show a nut means 21, which is known from the Swedish patent application 8702650-6, and comprises a L- for ed steel fitting. This is provided with a threaded hole 24 and a second hole 25 for a blind rivet 26.
• a set of holes for the nut 21 will be drilled in the frame surface side of the tubular profile 19, including a rectangular hole 27. That limb of the nut which is provided with the holes is inserted into the tubular profile via the hole 27, it is turned out towards the inside of the profile wall and affixed by means of blind riveting. Then that limb 21a which projects out of the hole 27 is broken off, as is shown in Fig. 3.
• Fig. 5 shows a second embodiment of the invention, wherein the same numerical references have been used on correspon- ding parts as in earlier figures.
• the tubular profile 19 is provided with a number of drill holes 28, arranged along the profile, at opposite surfaces 19a and 19c respectively, said holes permitting entering of attachment screws 20 from the outside.
• the tubular profile 19 also contains a U-sha- ped strip profile 29 which has a corresponding set of ho ⁇ les, and can be moved within the profile from a first posi ⁇ tion in which the screws 20 can be inserted through both sets of holes and tightened, and a second position in which it covers the screw heads. The strip can be locked in this position by means of a one way screw.
• the forced entry guard according to the invention may be used at frame and blade constructions made of wood, alumi ⁇ num or steel. At doors or windows opening inward, the tubu- lar profile will be mounted on the door blade or the window frame 12.
• tubular pro ⁇ files 21 may be three-sided.
• the invention may be applied to other types of windows than pivotally hinged, e.g. sliding windows.

Landscapes

• Engineering & Computer Science (AREA)
• Civil Engineering (AREA)
• Structural Engineering (AREA)
• Door And Window Frames Mounted To Openings (AREA)
• Hinges (AREA)
• Grates (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=20372190

Family Applications (1)

Country Status (3)

Family Cites Families (1)

• 1988
  • 1988-05-02 SE SE8801640A patent/SE8801640L/sv unknown
• 1989
  • 1989-04-28 EP EP19890905468 patent/EP0380598A1/en not_active Withdrawn
  • 1989-04-28 WO PCT/SE1989/000242 patent/WO1989011019A1/en not_active Application Discontinuation

Non-Patent Citations (1)

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