Movable or removable closures – With means mounting closure for swinging – Closure nests within portal frame
Reexamination Certificate
2000-05-25
2002-04-02
Safavi, Michael (Department: 3635)
Movable or removable closures
With means mounting closure for swinging
Closure nests within portal frame
C052S204100, C052S204500
Reexamination Certificate
active
06363660
ABSTRACT:
PRIORITY CLAIM
This application is based on and claims the priority under 35 U.S.C. §119 of German Patent Application 199 23 922.3, filed on May 26, 1999, the entire disclosure of which is incorporated herein by reference.
FIELD OF THE INVENTION
The invention relates to a security window or security door that impedes the penetration of bullets or other projectiles and inhibits forceful entry or burglary. The security window or door includes a window or door jamb frame and a window or door panel frame that is pivotably mounted in the jamb frame. Edge portions of the jamb frame overlap edge portions of the panel frame in an overlap area. The jamb frame and the panel frame are embodied as hollow profile members having hollow chambers that extend in the longitudinal direction therein. Burglary-inhibiting and/or bullet-impeding inserts can be disposed in these hollow chambers.
BACKGROUND INFORMATION
German Patent Publication DE 36 04 433 C1 discloses a security window or door having a hollow chamber in the hollow profile of the window or door panel frame. The hollow chamber can receive a bullet-impeding insert therein and extends along a comparatively recessed or set back plane in the hollow profile in the area of a gap that is formed between the window or door panel frame and the jamb frame. The purpose of the recessed insert is to prevent projectiles from penetrating through the window or door directly in the area of the gap. Furthermore, the disclosed window or door can be provided with an additional insert both in the jamb frame and in the window or door panel frame, whereby the additional insert is arranged in front of the above mentioned insert that protects the gap area (viewing the window or door from the side that is subject to forceful attack). As a result, the profile allocated to the panel frame overlaps, on the one side, an edge portion of a bullet-impeding filler panel and, on the other side, an edge portion of the recessed insert, also in the window or door panel frame. An edge area of the insert in the jamb frame also overlaps on the one side the recessed insert of the window or door panel frame and, on the other side, for example, an additional insert of the jamb frame that is also recessed and that can form the connection to other structural parts of the building.
The security window or door described above provides overall a bullet-impeding embodiment of the frame construction. While the known construction has proven to be technically very useful, it suffers the disadvantage that the production of the security profiles is relatively complex and thus relatively expensive. The complexity stems from the fact that the profile of the window or door panel frame is provided with two hollow chambers arranged offset from each other for receiving inserts. Also, the embodiment and arrangement of the inserts in the overlap or rabbeted area, in which the gap between the window or door panel frame and the window or door jamb frame changes its direction a number of times, is particularly complicated.
Another construction of a window, door, or fixed glass panel in a bullet-impeding embodiment is disclosed in European Patent Publication 0,253,983 B1. Here, too, security profiles that overlap each other in an overlap area are provided on the attack-prone side of both the window or door jamb frame and the panel frame. The gap formed between the two profiles has the form of two waves cutting across each other and extends at approximately a 45° angle relative to the plane of the window. The profiles of both the window or door jamb frame and the window or door panel frame are provided with trapezoidal-shaped hollow chambers that also extend at an angle of approximately 45°. Insert panels that extend either parallel or perpendicular to the longitudinal direction of the hollow chambers are arranged in the hollow chambers. The hollow chambers extend into the overlap area to ensure that security against penetration by a projectile is also provided in the overlap area of the two profiles. This is one of the features that make this particular known construction complicated to manufacture. German Patent Publication DE 78 03 666 U1 discloses a bullet-impeding door or window construction of the general type described above. The inserts in the profiles of the window or door panel frame and the jamb frame are arranged in two planes that extend parallel yet offset relative to each other. These inserts extend into the overlap area of the two profiles, which are separated from each other by a stepped gap. It is comparatively simple to manufacture such security profiles. Such profiles, however, are not adequate to satisfy the security requirements if, in addition to a bullet-impeding effect, a forced entry inhibiting effect is also required, particularly in the higher resistance or security classes.
German Patent Publication DE 28 45 951 C2 discloses a bullet-impeding metal door. The outer side of the profiles for both the jamb frame and the window or door panel frame is provided with a solid, massive casing or cover profile that is to prevent projectiles from penetrating through the frame area. The gap between the jamb frame and the panel frame in the area of the solid cover profile extends diagonally relative to the plane of the window or door and is, in addition, bent in an S-shape. Such a construction is disadvantageous if a bullet-impeding effect of the window or the door is not required and the requirements for protecting against forceful entry are low (lower resistance or security classes). In this case, the solid embodiment of the cover profiles is unnecessarily expensive and furthermore results in a noticeable increase in weight of the jamb frame and/or panel frame construction.
SUMMARY OF THE INVENTION
In view of the above, it is an object of the invention to provide a security window or a security door, generally called a security structure herein, that is less costly to manufacture, and that is adaptable through simple measures to satisfy the requirements for the various resistance or security classes with respect to preventing forceful entry or penetration by a bullet or other projectile without requiring modifications of the basic frame profile members of the security structure. The invention further aims to avoid or overcome the disadvantages of the prior art and to achieve additional advantages, as are apparent from the present specification.
The above objects have been achieved according to the invention in a security structure, e.g., a security window or security door, in which hollow jamb frame and/or panel frame profile members have therein hollow chambers that are situated exclusively laterally next to or displaced from an overlap area of the jamb frame and the panel frame. The hollow profile member of the jamb frame and/or of the window or door panel frame includes a solid edge portion in the overlap area. The respective hollow chamber is directly adjacent to the respective edge portion. Because of the solid construction of the edge portions in the overlap area, it is not necessary to provide hollow chambers in that area. This is an advantage because it was often technically difficult to manufacture hollow chambers in the irregularly-shaped overlap area. In any case, the conventional construction of the hollow chambers in the overlap area added significantly to the manufacturing costs. Also, because the solid portion of the profile members of the jamb frame and the panel frame is restricted to a relatively small edge portion in the overlap area, the material requirements for such profile members are held within limits, which further aids in keeping costs down. Furthermore, the weight per unit length of the profile member having a solid edge portion is increased only slightly by the solid edge portion, in contrast to a conventional construction in which the outer profile member of the security door or window is constructed as a solid profile member.
The core concept of the invention is to protect the overlap area, which is typically formed to have an irregular shape by a number
Saelzer Sicherheitstechnik GmbH
Safavi Michael
LandOfFree
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