Textiles: manufacturing – Textile product fabrication or treatment – Fiber entangling and interlocking
Reexamination Certificate
2001-01-23
2001-09-04
Vanatta, Amy B. (Department: 3765)
Textiles: manufacturing
Textile product fabrication or treatment
Fiber entangling and interlocking
C028S158000, C264S173110, C264S258000
Reexamination Certificate
active
06282764
ABSTRACT:
FIELD OF THE INVENTION
The present invention relates to a personalization procedure of the hardness, strength and durability of mounting plate or seating structures, with which the characteristics of different areas of the mounting plate base in relation to the specific demands required for each of these areas can be adapted, depending on the specific application of the mounting plate structure.
BACKGROUND
It is a general practice to make mounting plate or seating structures by the combination of a resistant structural damping base and one or more layers within which the central damper or principal element is located, to obtain a block which will result aesthetic appearance and convenient use at the same time.
These layers which are made up of a base of polyuretane which can be normally used for that purpose. Expanded polyurethane is a closed cell material which does not permit transpiration of relatively greater thickness, thus compelling the use of products of reduced thickness which, therefore, will not be able to function satisfactorily in its damping function.
Trying to obviate this problem there have been solution known for establishing the aforementioned damping layers of the mounting plate or seating structures, customarily a two-layer structure, using a layer of expanded polyurethane and a layer of textile and fibrous material which, maintaining the characteristics of the group from the point of view of transpiration, it allows a substantial increase of the base thickness and the damping effect of the same.
Spanish utility patent No. 158,195 of the same applicant, is for a two layer of the mounting plate structure whereby, a part of the textile layer's fibers for the two layer of the mounting plate structure a part of the textile layer's fibers are introduced into the inside of the spongy plastic layer for suitable attachment of the mounting plate structure and these multiple fibers serve as linkage between both layers, to provide the mounting plate structure with a desired suitable stability.
Other Spanish patents, such as No. 382,469, also Spanish utility model No. 289,509, and Spanish patent No. 547,760, describe machinery for creating a suitable linkage between the two layers of the mounting plate structure.
SUMMARY OF THE INVENTION
It has been surprisingly found that the fibrous wicking action at the junction between the two layers, in addition to its fixing function, directly affects the level of stiffness of the mounting plate or seating structures, so that this stiffness increases with increased punching or perforating of the base, and the deeper these punched perforation are.
The core of the present invention is that the punching by the perforating needles is achieved by needles deeply penetrating into the base material, and that they also depend on the number of needles used per surface unit, thereby providing greater or lesser stiffness to the different parts of the mounting plate base, so that for example this stiffness can be made be greater in the marginal or peripheral areas of the plates and in the areas where there is more loading than on the rest of the base surface.
According to another characteristic of the present invention the perforating or punching needles can be inserted at a right angle to the plane of the mounting plate base, or they can be inserted at an inclined position with regard to that plane so that the same number of wicks or multiple fibers inserted in the mounting plate layer, with the same length, stiffness of the structure will be lower as the incline of the angle is increased. Alternatively, a bundle of perpendicular and inclined wicks can be inserted in a combined way as well as bundles of wicks with different degrees of inclination.
With the foregoing consideration, and according to another characteristic of the invention, the mounting plate structure can be stratified with two layers, one of fibrous material and another of spongy or non spongy mounting plate material, or it can also be stratified with a number of layers of the aforementioned materials, properly combined. The fibrous material can even be placed inside of two or more layers of the mounting plate material, in which the punching, for establishing the stiffening wicks can be carried out from either side of the base.
The invention also relates to the arrangement of two layers of fibrous material, which can adopt any combination or arrangement with relation to mounting plate material, by putting both of them on the external surfaces of the layer or layers of the mounting plate material, both in the inside or one in the inside and the other on the outside.
In the case of using more than one fibrous layer, they can be of similar or different nature making use of the different characteristics of these materials with any of the aforementioned combination.
Machines which enable the aforesaid personalization procedure of hardness, strength and durability of mounting plate bases, is also an object of the invention.
Machines of this type are structured starting from a dolly, are assembled upon an appropriate chassis in which many perforations can be made and distributed in a reticulated form. A guide plate with various perforations, which coincide with the dolly's perforations, serve to guide the needles used to turn fibers of the correspondent layers of the fibrous layer into wicks introduced in the spongy layer. With the particularity that the needles are associated with a number of crown-pieces of independent drive, which work, for example, through an hydraulic cylinder of controlled haul, in a way that depending on the specific requirements, in each case, it may be therefore modified at will the number of needles which result efficient, as the position or positions of these and also as the distance covered which is equivalent to the length of the fibrous wicks which furthermore are going to be obtained, or of a power assistance by cams provoking the descent of the needles in a depth adapted to the shape of the cams.
According to another feature of the present invention, it has been foreseen that the crown-pieces are fixed to the corresponding running mechanisms in detachable form, so that they can be substituted by others with greater or lesser density of needles, or with longer or shorter needles.
Finally and according to yet another feature of the present invention, the needle-holder crown-pieces can be assembled upon a mounting plate chassis vertically arranged in the machine or arranged in an inclined position when the fibrous wicks are to be disposed in an inclined position in the foamed layer of the mounting plate base.
In this way, the machine is able to provide the mounting plate base with fibrous wicks which will provide stiffness to it, with any variable length, any direction or any density, in all surfaces of the mounting plate base.
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Diaz Fernando Lopez
Ruiz Manuel Alba
Fabricas Lucia Antonio Betere, S.A. (Flabesa)
Katona L.L.P. Gabriel P.
Vanatta Amy B.
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