MXPA95004408A - A band construction that has a fabric deimitation fabric as an impact switch - Google Patents

Abstract

The present invention relates to a band construction having a reinforcing layer and at least one covering layer, the improvement characterized by the band having incorporated therein a layer of imitation gauze fabric having a resistance to the tension of at least 2800 kn / m of anchu

Description

A BAND CONSTRUCTION THAT HAS A FAT IMITATION FABRIC AS AN IMPACT SWITCH OR FITTING INSERTION INVENTOR: CYNTHIA ARLINE IRVIN, North American domiciled at 3184 To nshíp Road 221, Marengo, Ohio 43334 United States of America, cedes all rights to - THE GOODYEAR TIRE & RUBBER COMPANY, duly organized and constituted in accordance with the laws of the State of Ohio, United States of America, with address - at 1144 East Market Street, Akron, Ohio 44316-0001 United States of America, for the invention that is describes BACKGROUND OF THE INVENTION Splice inserts and switch materials have hitherto used conventional web fabrics and some light weight to medium weight gas fabrics. Conventional web fabrics include flat fabrics, rib fabrics and crowfoot fabrics (cut twill) that have warp covering factors greater than 75%. These fabrics, while providing the necessary strength and stability, prevent the penetration of rubber and, therefore, limit the mechanical bond in view of the lifting elevators. The lack of mechanical bonding in severe applications can lead to the -delamination where the chemical bond can not tolerate the shear forces. When a conventional fabric is used with a splicing material, the shear stresses can cause a cover crack through the web at the fabric insertion interface and the fabric / frame composite. This cracking can lead to breakage or breakage of the palm. In the splices, the cloth fingers are often inserted into the insert to dissipate the shearing forces, but the finger may also begin to detach. Gas fabrics are not affected by shear stresses like conventional fabrics, but they have a tissue limitation. The mechanisms of gauze formation are simply not so made for heavy constructions. The state The gauze loops of the state of the art can only lift up to a fabric of average weight (approximately 508,584 gr / m) at the most Even when the mechanisms could tolerate more, the twisting movement would require so much space that they could not pack enough Filler yarns to stabilize the fabric adequately provide sufficient strength. Most of the available d 2 gas fabrics are below 339,056 gr / m. A few have been manufactured on the scale of 339,056-678.12 gr / m. The remaining gauzes, greater than 678.12 gr / m ^ are ripping switches that have very light weight warps compared to the filling threads. Hard tear switches are used only to help block the propagation of longitudinal tears.

SUMMARY OF THE INVENTION In accordance with the practice of the present invention there is provided a band construction having a reinforcing layer and at least one covering layer incorporating therein a layer of gas imitation fabric having a resisting layer. tension at least 2800 kN / m width. It is preferred that the gauze imitation fabric have a coverage factor of less than 70%.

BRIEF DESCRIPTION OF THE DRAWINGS Figure 1 illustrates a full-body gauze fabric that has been used in band constructions. Figure 2 illustrates a gauze imitation fabric construction that can be used in the practice of the present invention. Figure 3 illustrates an alternative gaming construction that can also be used in the practice of the present invention. Figures 4A, 4B and 5 illustrate various web constructions using gas imitation fabrics. Figure 6 is an illustration of a band construction that has been prepared for splicing. Figure 7 is a longitudinal cross section of splice area, taken along line 7-7 of the Figure illustrating the various layers where a splice insert of the gauze imitation fabric is used.

Detailed Description of the Invention The tensile strength for a full-body gauze 10 as illustrated in Figure 1 is limited by the size of the yarn that is used to put the twist in the warp yarns 12A, 12B between the yarns. 14 filling threads. In addition, the machinery required to make said fabric is very complicated. The gauze imitation fabric as illustrated in Figures 2 and 3 can be produced on conventional looms. The imitation of gauze, as shown in Figure 2, represents a common construction 4 X 4, where the warp cords 18A, B, C and D are interlaced in any pattern contemient with strings 20A, B, C, D fill. Figure 3 illustrates an imitation 22 of gauze having a 3 X 3 construction. The fabric constructions can be created to be of equal strength in both directions or stronger in any warp or full direction. The warp and fill beads may vary, if necessary, to create an open but stable fabric. Suitable fibers such as polyester, nylon, glass, metal, carbon polysulfides can be used to make the imitation fabrics of gauze. The fibers can be in the form of monofilament, multifilament or cut. The yarns used in the imitation gauze may consist of one or more (hybrid) fibers and may be of different size, twist or color. One or more yarn constructions can be used in any combination on the gauze imitation fabric. It is not intended that the gas imitation fabrics used in the present invention be a replacement for the conventional reinforcing layer, but rather as switches as illustrated in Figures 4A, 4B and 5, where the conventional reinforcement is shown as steel wires 26 and fabric layers 30 between the cover layers 28. Figure 4A illustrates the construction of a web before vulcanization, while the web 32 d of Figure 4B illustrates the same construction after vulcanization. Figure 5 illustrates a band 34 where the gauze imitation fabric has been incorporated into the cover layer 28 prior to assembly. Figure 6 illustrates a band end that has been pre-arranged for splicing, wherein the various reinforcement layers have been cut in a bias to be matched to the complementary reinforcement layers from the other end, as illustrated in the Figure 7, wherein the gauze imitation fabric layer has inserted above and below the splice area 36 to provide additional strength and to prevent opening of the palme.

Although certain modalities and representative details have been shown for the purpose of illustrating the invention, it will be apparent to those skilled in the art that various changes and modifications may be made therein without abandoning the spirit or scope of the invention.

Claims (4)

1. NOVELTY OF THE INVENTION Having described the invention, it is considered as a novelty and, therefore, the content of the following clauses is claimed as property. 1. In a band construction having a reinforcement layer and at least one cover layer, the improvement characterized by the band having incorporated therein a layer of gauze imitation fabric having a resistance to the tension of at least 2800 Kn / m in width.
2. 2. The band in accordance with that claimed in clause 1, further characterized by the imitation layer of ga that is incorporated within the cover layer.
3. 3. The band according to claim 1 clause 1, which is further characterized by the layer of imitation gauze that is incorporated between the reinforcement layer and the when a layer of cover.
4. 4. The band in accordance with what is claimed in clause 1, also characterized by the gauze fabric that has a coverage factor of less than 7056. Summary of the Invention A BAND CONSTRUCTION THAT HAS A GAS IMITATION FABRIC AS AN IMPACT SWITCH OR JOINT INSERTION A web construction having a reinforcement layer and at least one cover layer incorporating a layer of imitation gauze fabric having a tensile strength of at least 2800 kN / m width. In testimony of which, I have signed the previous description and novelty of the invention as proxy of THE GOODYEAR TIRE & RUBBER COMPANY, in Mexico City, Federal District, today, October 19, 1995. p.p.de THE GOODYEAR TIRE & RUBBER COMPANY