MXPA96004590A - Products textiles of self-sujection for jun - Google Patents

Abstract

The present invention relates to a gasket product, characterized in that it comprises a bulky fabric belt, having a fiside and a second side and having an edge portion, a fiedge extending in a longitudinal direction along the length of the fiedge portion, the woven tape has a main body portion extending in a transverse direction from the fiedge, the main body portion is knitted using stitches resulting in a balanced knit fabric, a tubular seal secured to the main body portion on the fiside thereof, extending in the longitudinal direction along a line spaced apart from the fiedge portion, the fiedge portion having a woven lip with a plain jersey stitch, the stitch jersey causes the lip to curve inwards in a transverse direction on the second side of the tape in order to pre-curve the lab

Description

SELF-TEXTURE PRODUCTS FOR JOINTS Field of the Invention This invention relates to products such as gaskets or tubular gaskets and means for joining them to a flanged surface, which is relatively movable with respect to a second surface. The products of this invention can be woven or woven, and in a preferred application, they are formed of a bulky, thermally insulating yarn and a support wire. They claim to be for high temperature applications, such as oven door seals. One application of the particular product for the invention is the joining of tubular joints woven to the door frame of high temperature ovens.

Background of the Invention Woven tubular joints have been used as oven door seals for many years. Those gaskets are typically made from a combination of an internal tubular support member, formed of an outer tubular insulating cover member made, either by braiding, weaving or interlacing an insulating material such as yarns. fiberglass Such structures have proven to be durable at the high temperatures used in self-cleaning ovens and provide a good seal, despite the repeated openings and closures of the oven door over many years of use. The internal tubular support member, sometimes called a bulb, provides the necessary elastic support to the tubular fiberglass gasket or gasket. One form of the board of the type described is the so-called "tadpole" board made by the Bentley-Harris Manufacturing Company of Lionville, Pennsylvania under the PYROSEAL brand. These joint products comprise a tubular woven element formed of woven or braided fiberglass yarn and a woven inner bulb made of stainless steel wire. The tubular joint is preferably formed integrally with a "tail" integrated by means of a single seam line formed at the base of the joint. The flexible nature of the glue allows the joint product to bend around the corners and other irregularities without puckering or folding. The glue is adapted to be clamped, or fixed using traditional fasteners, to the support substrate.

COMPENDIUM OF THE INVENTION According to the invention, the gasket, which is preferably a tadpole gasket of the type already described, is attached to a temperature resistant knitted belt, which has a free edge portion, constructed so that it is deflected to wind up towards back on itself, forming a self-clamping portion, of the clam shell type, which naturally holds the surface with flanges of an oven cavity, allowing the front frame or frame to be installed freely by a worker, without the need for clamps or strange fastening means. According to one aspect of the invention, the region along an edge portion of a bulky, woven tape is woven using a plain knit or jersey knit. In accordance with this aspect of the invention, advantage is taken of the natural tendency of the jersey to be rolled or curled, so that the edge portion naturally rolls back on itself, towards a clam shell configuration, which holds the frame of the door with flanges, with sufficient clamping force to keep the joint in the proper position, for the installation of the front frame or frame or the application of fasteners.

Although various forms of tape may be employed, the invention contemplates that the tape is woven using a ribbed or double knit fabric through the main portion of its width. In a preferred embodiment, the basic belt construction involves the employment of a ribbed point, from one edge portion to a section adjacent to the second edge portion. A jersey knit was used adjacent the second edge, causing the second edge portion to be rolled or curled over the shell configuration. Preferably, the ^ tadpole * or joint tail of the conventional * Venacuajo * type is attached by sewing, along 1 an adjacent seam line, one of the edge portions. To impart flexibility to the woven tape along the line adjacent the space projecting from the jersey fabric portion, a stepped textile construction was employed to allow greater flexibility, to eliminate puckering of the tape when formed around the fabrics. corners and other irregularities of the surface. The stepped construction also allows easy penetration of staples or other fasteners. The invention also has application in the joining of other conduits and tubular sleeves, such as those used in the lining and protection of wires, cable and other elongated substrates. Single-filament materials can be used alone or in combination with the bulky yarn in the belt, as well as in the conduit or tubular sleeve.

Detailed Description of the Drawings Figure 1 is a front view of a section of the tape, constructed in accordance with the teachings of the present invention; Figure 2 is an inverted view of the tape of Figure 1; Figure 3 is a cross-sectional view of a gasket product installed on a flanged portion of a furnace door frame; and Figure 4 is a schematic view of a conventional V-shaped spinning knitting machine, showing the needles employed in the front and rear needle beds in the fabric of the ribbon used in the present invention.

Detailed Description of the Preferred Modality of the Invention Referring first to Figures 1 and 2, the front and back sides of a woven ribbon product formed in accordance with the invention are illustrated. Although other textile materials may be used for high temperature seal and seal applications, the tape is preferably woven from a bulky, heat resistant yarn of a ceramic or glass fiber. Such as fiberglass yarn TEXO (registered trademark). For applications involving the lining or wrapping of wires or cables, the tape can be woven from monofilaments of designed plastic materials. As illustrated, the belt 10 has a first edge portion 11 and a second edge portion 12. The main portion of the belt was woven using a point balanced with curls or loops I frontal and posterior. In a preferred construction, a ribbed knit was woven, although an interlaced knit and its variations may be employed. The ribbed portion preferably extends over a major portion of the width of the tape and gives the tape an excellent degree of dilation and elasticity, as well as a substantial body. The tape of the type employed can typically have a width of up to about 5 cm (2") and a thickness, in the ribbed portion portion, of about 0.3 cm (1/8"). The tape is preferably woven in a conventional V-shaped knitting machine. An interpretation of a V-shaped spun-knitting machine is illustrated in Figure 4. The weaving machine comprises a rear needle bed 15 and a front needle bed 16. The left side of Figure 4 illustrates the display of the sets of needles 17 and 18 on the back and front needle plates, respectively. The yarn is schematically represented by the reference character 20. By placing the alternating needles in both the front and rear needle plates, so as to form curls or loops both front and back, a balanced 1X1 ribbed knit is woven. Figure 4 represents the tissue of a tape having a first section Adjacent in the direction of the first edge where a ribbed point 1X1 was used. A second section is woven adjacent in a transverse direction to the first, wherein three of the needle assemblies were removed to obtain a stepped configuration running along (ie, longitudinal) the tape., and a second section where two sets of needles in the front needle plate were removed, forming a jersey point. Finally, the edge portion of the fabric is illustrated on the right side of Figure 4, where two of the needle assemblies weave a ribbed dot along the edge. The dashed lines in Figure 4 indicate that the woven fabric, and in particular the ribbed point and stepped portions, may vary in width depending on the application of the joint product. As indicated above, the jersey portion of the fabric has a natural tendency to coil due to the imbalance caused by the absence of front needles and the elimination of the curls or front loops. The invention takes advantage of this inherent characteristic of the jersey fabric by providing a jersey section adjacent to the right edge, as seen in Figure 4. In this way, the right edge portion is rolled back on itself towards the front part of the fabric forming a clam shell, which has the ability to roll or curl on a surface with ridges, holding the tape in relative position to the surface. In contrast, the ribbed stitch portion has no such tendency to coil. Figure 3 is a cross-sectional view of a gasket product using the belt of Figures 1 and 2. In Figure 4, a furnace door frame 20 of conventional construction is provided with a flange 21 to which the product of board was fixed. As shown in Figure 3, a joint product comprises a tadpole joint 22, which preferably includes an outer tubular element 23, which was formed of a relatively bulky, heat-resistant, fiberglass or ceramic yarn. Typically, the outer layer of yarn is supported by an inner tubular layer, which can be woven or braided from an elastic wire made of a material such as stainless steel. Although the joint itself can be formed in other ways, the preferred joint is made of a continuous length braided material, which is sewn along a single seam line at the base of the tubular element shown at 25, to form the joint in the well-known tadpole form, with the tail portion 26 serving as a means for securing the joint to the ribbon 10. As illustrated in Figure 3, the tail was attached to the ribbon along the final portion of the same by means of a single row of stitches, indicated by the reference character 28. With reference to FIGS. 1-3, the ribbed portion 30 can be observed as a relatively bulky portion, which lies on the substrate of support to support the joint and provides means to which the joint can be fixed firmly. The intermediate stepped portion 31 serves to increase the flexibility of the tape, which increases the ability of the tape to fold around the corners without puckering or folding. The jersey portion illustrated at 32 naturally curves around the rim 21, allowing assembly of the gasket on a substantially rectangular frame and freeing the worker's hands for the installation of a front frame on the surface of the tadpole tail. 26 or for the installation of other fasteners. All construction can be manufactured expeditiously using conventional textile weaving and braiding equipment. The product is of cheap manufacture and highly resistant to heat. 90 ° corners can be formed uniformly without notching or cutting to form miter or square joints. Cutting and sewing operations are reduced to a minimum. The product can be coated or impregnated in silicones, fluorocarbons, graphites or similar to meet the needs and lubricating power, wear or environmental requirements.

It is noted that in relation to this date, the best method known by the applicant to carry out the aforementioned invention, is the conventional one for the manufacture of the objects to which it relates. Having described the invention as above, the content of the following is claimed as property:

Claims (11)

1. A gasket product, characterized in that it comprises a bulky fabric belt, having a first side and a second side and having a first edge portion, a first edge extending in a longitudinal direction along the first edge portion. , the woven ribbon also has a main body portion that "" tends in a transverse direction from the first edge, the main body portion was woven using stitches resulting in a knitted fabric construction balanced, together with a gasket tubular secured to the * the main body portion on the first side thereof, extending in a longitudinal direction and secured to the main body portion on the first side of the belt along a line separated from the first edge portion of the first edge portion that has a lip lip knitted with a plain jersey stitch, to pre-bend the lip on the second side of the ribbon.

2. The gasket product according to claim 1, characterized in that the tubular gasket comprises an outer tubular member comprised of a fiberglass yarn and an internal tubular member comprised of stainless steel wire.

3. The gasket product according to claim 1 or claim 2, characterized in that the inner tubular member is woven and the outer tubular member is interlaced.

4. The gasket according to any of the preceding claims, characterized in that the belt adjacent to the first edge portion is woven with a ribbed point.

5. A tubular textile product, characterized in that it comprises a woven tape, the tape has a first edge portion, and first and second sides, a main body portion extending in the transverse direction from the first edge portion, the main body portion it is woven with intertwined curls or front and back loops; a tubular gasket member positioned in spaced relation to the first edge portion, the tubular gasket member is interlocked and secured to the first side of the main body portion of the belt in a longitudinal direction, and the first edge portion is from a jersey point that has a lip that rolls back on the second side of the ribbon.

6. The product according to claim 5, characterized in that the tubular textile product is a gasket or gasket.

7. The product according to claim 5 or claim 6, characterized in that the main body portion is woven with a ribbed point.

8. The product according to claim 7, characterized in that the ribbed point is uni dot ridge 1X1. 'l

9. The product according to any of claims 5-8, characterized in that the tape was woven of a bulky yarn.

10. The product according to claim 9, characterized in that the bulky yarn is a fiberglass yarn. en. The product according to any of claims 5-8, characterized in that the tape was woven from a single filament yarn.