Flexible or portable closure – partition – or panel – Plural strip – slat – or panel type – Movably interconnected
Patent
1991-02-14
1992-04-28
Purol, David M.
Flexible or portable closure, partition, or panel
Plural strip, slat, or panel type
Movably interconnected
160237, 160264, E06B 934
Patent
active
051079178
DESCRIPTION:
BRIEF SUMMARY
BACKGROUND OF THE INVENTION
The subject invention concerns an arrangement in doors of the kind comprising at least one door leaf of a first material, which door leaf is provided with an insert of a second material having properties differing from those of the first material. Both the first and the second materials are sufficiently flexible to allow the door to be closed by the door leaf being respectively wound-on and wound-off.
In doors of this kind it is often desirable that the insert of the second material, which is attached to the first material, is in the form of a window through which it is possible to ascertain the presence on the other side of the door of objects, such as a vehicle, or of a person. Such transparent materials are, however, less durable when exposed to mechanical wear than is the material making up the rest of the door leaf. The less durability of such transparent materials is a consequence of the inherent tendency of such materials to crack when exposed to temperature variations. Furthermore, after a period of service the transparent material generally is scratched to such a degree that its see-through properties are almost entirely lost and consequently the transparent window material needs to be replaced. However, to replace the transparent material requires considerable work as the seam must be ripped up and a new piece of material be sewn on. As a rule, this operation requires that the entire door leaf be dismounted.
In some cases it may be advantageous to replace one window possessing certain properties by another window having different properties. For instance, it may be desirable to install windows of tight transparent materials during the winter season while in the summer the use of a transparent material with vent holes therein may be more desirable.
SUMMARY OF THE INVENTION
The subject invention which concerns an arrangement in doors of e.g. the kind defined in the aforegoing provides a possibility of exchanging one section of the material of the door leaf for another, thus eliminating the disadvantages outlined in the aforegoing. This is achieved in accordance with the invention therein that the second material is replaceable and in that it is attached to the first material by means of a device which may be detached from and be reattached to the first material.
Further characteristics of the invention will appear from the dependent claims.
BRIEF DESCRIPTION OF THE DRAWINGS
The invention will be described in closer detail in the following with reference to the accompanying drawings, wherein
FIGS. 1, 2a and 2b illustrate two different embodiments of possible means of attachment in accordance with the invention, and
FIGS. 3-6 illustrate different embodiments of varying the insert piece in accordance with the invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
FIG. 1 illustrates the joint or seam area bridging the door leaf 1 and the insert piece 2. In accordance with the embodiment illustrated in this drawing figure, the joint or seam is a pin seam comprising rows of loops 3 which are secured to the insert piece or window 2 and loops 4 which are secured to the door leaf 1. The loops 3 and 4 are interdigited and interconnected by means of a pintle wire 5. A covering flap 6 or similar fabric piece covers the seam, said covering flap 6 being secured to the window 2 as well as to the door leaf by means of Velcro, or hoop-and-loop fasteners 7, 8, respectively.
FIG. 2a shows the door leaf 1 together with the intermediate window 2 which in this case, like the embodiment illustrated in FIG. 1, is made from a transparent material. Also in this case the door leaf 1 is secured to the window 2 with the aid of a pin seam including loops 3, 4 and a pintle wire 5. FIG. 2b illustrates the manner in which the entire window is covered during the winter season in order to prevent heat losses through the window 2. The latter could be provided with apertures or vent holes for purposes of ventilation during the summer season. In the winter, the window is covered by a covering fabric 9
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patent: 3035275 (1962-05-01), Strebeigh
patent: 3292685 (1966-12-01), Clark
patent: 3583465 (1971-06-01), Youngs et al.
patent: 4736785 (1988-04-01), Seuster
patent: 4800946 (1989-01-01), Rosenoy
Nomafa AB
Purol David M.
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