Movable or removable closures – Panel with closure feature
Reexamination Certificate
1997-10-16
2001-01-16
Redman, Jerry (Department: 3634)
Movable or removable closures
Panel with closure feature
Reexamination Certificate
active
06173534
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to an entrance door for a premises, and more particularly to a door that has one of its faces turned toward the inside of the premises where temperature deviations are limited over the course of a year, and its other face turned toward the outside of said premises, where the temperature deviations are more important.
It is well known that the entrance door face that is turned toward the inside of premises, and characterized by a limited yearly thermal amplitude, undergoes only a limited expansion/contraction in the course of a year. On the other hand, it is also true that the face of that same door that is turned toward the outside of the premises may be subjected to a relatively important expansion/contraction, because of external temperatures that vary, for example, between −10° C. and 40° C. over the year.
This expansion/contraction phenomenon of the external face of an entrance door is further accentuated when that face is made of a metallic material, especially aluminum.
Entrance doors with metal faces generally can be divided into two groups, depending on their structure.
The first group the most commonly used doors, which are made of one or several decorative panels a thermally insulating packing, that are mounted inside a door frame is made of metallic profiles, for example. These panels comprise, on each one of their faces, a metallic facing possibly of aluminum. The thermally insulating packing of these panels is made of polyurethane, for example.
These doors offer the advantage of having reduced expansion/contraction characteristics for their respective external faces, in response to important yearly variations of the outside temperature. Such door, however, come at a rather high cost, and with a less than a perfect aesthetic appearance.
In a second group, there are monoblock doors that usually are made up of a single panel with a thermally insulating packing that is connected so as to form one piece with a frame. This panel and this frame comprise metallic facings that form the faces of the door. Each facing is mounted directly on the above-mentioned frame. The latter is equipped on its respective longitudinal edges, on the one part with means to guide the door when in motion relative to a wall frame, and on the other part, to close it when in a and possibly lock it into closed position.
A major drawback of a door of the monoblock type is found in that this external facing, when it expands/contracts along its periphery because the afore-mentioned yearly thermal temperature variations, exerts stresses on the frame and which becomes deformed, this bringing about difficulties, even possibly the impossibility of a closing of the door.
BRIEF SUMMARY OF THE INVENTION
The purpose of the present invention is to provide an entrance door having one of its faces turned toward the inside of these premises, in which the temperature deviations are reduced over time, and its other face turned toward the outside of these premises, where the temperature deviations are greater. This door is equipped with means to guide it in motion relative to a wall frame on which it is to be mounted, and with means to close it on this frame. The door is such that its external face can not hinder the opening or the closing of this door because of its expansion/contraction.
To that end, an entrance door according to the present invention is made up of two panels that are joined together in superposition and over a zone of their faces facing each other, with means to render the door movable and to close it. The means are on the panel having its external face turned toward the inside of the premises.
According to another characteristic of the invention, said joining-together zone is central relative to the periphery of the panels.
According to another characteristic of the invention, these panels respectively comprise, on the periphery of the faces that face each other, means to permit the displacement of the edges of the panel to have its external face turned toward the outside of the premises, and in a plane parallel to that of that internal panel.
According to another characteristic of the invention, the above-mentioned means are made up of identical profiles in the form of small flaps which the above-mentioned panel faces that face each other respectively have over their entire length and their entire width, so that the flap of the external panel is capable of sliding on the corresponding flap of the internal panel, in the direction of the length and of the width of the door.
According to another characteristic of the invention, each flap is made up of two flat portions of equal width that are parallel to the panel faces that face each other. The flat portions are connected together by means of an oblique portion.
According to another characteristic of the invention, the panels are joined with each other by means of a cross piece on which there are fixed the respective median parts of the panels.
According to a variant of the invention, the panels are joined together by means of a layer of glue that is applied to their respective median parts.
The above-mentioned characteristics of the invention, as well as others, will appear more clearly upon reading of the following description of an example of execution, this description being given in relation to the attached drawing, in which:
REFERENCES:
patent: 2165430 (1939-07-01), Weisfeld
patent: 2228650 (1941-01-01), Young et al.
patent: 3506088 (1970-04-01), Sherman
patent: 4571915 (1986-02-01), Barman
patent: 4589240 (1986-05-01), Kendall et al.
patent: 4937978 (1990-07-01), Johansson et al.
patent: 1509 523 (1969-06-01), None
patent: 2505 395 (1982-11-01), None
patent: 2539 803 (1984-07-01), None
patent: 471258 (1937-09-01), None
patent: 2005 331 (1979-04-01), None
Bel'm Productions Sarl
Laf Whitesel & Saret, Ltd.
Redman Jerry
Whitesel J. Warren
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