FR2847171A1 - FALL FALL HARNESS FULLY ADJUSTABLE BY SELF-LOCKING SLIDES - Google Patents

Abstract

The invention relates to a fully adjustable fall arrest harness, characterized on the one hand by two plates (PL2) located on the hips, pierced with two passages allowing the self-locking crossover of the buttocks (SF2), the straps (B) and their seamless length adjustments, and on the other hand a closure of the thigh straps whose male buckles for closing and adjusting are located in the extension of the back straps and therefore recover all excess strap from previous adjustments of the buttock (SF2) and shoulder straps (B). A sign marked at regular intervals on the strap allows symmetrical adjustment. The device according to the invention is intended for protection against falls.

Description

The present invention relates to a device for

  create a fully adjustable fall arrest harness.

  Traditionally fall arrest harnesses are made

  with buckles, pieces of strap and seams.

  Different mandatory standards govern general requirements for tensile strength, design and ergonomics. The general idea is that a fall arrest harness must comply with current standards, as comfortable as possible, light, have a strap under the buttocks, suspenders, waders and attachment points, all adjustable to the morphology of the user and that after having been adjusted, he cannot get out of balance under the foreseeable conditions of use. During a fall, the buttock area must support the full weight of the body. The fall arrest harness is effective when the combination of all the adjustments keeps the buttocks in place. Otherwise, a large part of the force is transferred to the subpelvic part of the waders and compression of the femoral arteries is very dangerous, often

insupportable.

  In response to these major drawbacks, the device according to the invention makes it possible to produce a fully adjustable fall arrest harness, without unexpected sliding during its use. The first characteristic of this device is a plate of

  crossing of the straps placed at the level of each of the hips.

  This plate is pierced with two equal and parallel passages which allow the crossing of two straps, seamless. The length of these passages, greater than the width of the strap used, can vary depending on the desired crossing angle. The width of the strap can also be narrowed by sewing. The width of these passages is greater than twice the thickness of the strap used. The material used and the thickness of the plate depend on the desired resistance thresholds. The straps are marked with a sign at regular intervals, cut and used so that these signs allow adjustment

  symmetrical on both sides, right and left of the fall arrest harness.

  The main strap is made up of three pieces of straps.

  -2 Two of these pieces of strap, of equal length and sufficient to constitute the entire harness are sewn by means of load-bearing seams to the right and left of the third piece of strap which constitutes the central part of the buttock. This part is placed on the two straps so as to leave free on one side two lengths of strap which will be the first parts of the waders, fixed length. At the end of each of these two lengths of strap, a traditional closing female loop is placed, held by a carrying seam. The angle formed by the central part of the buttock and the other two pieces of strap depends on the design and can range from 900 to 1800. On the other side, the two straps in extension of the central part of the buttock constitute the full buttock. This crosses right and left the two passages of the plates placed at hip level, the first passage from bottom to top, the second from top to bottom, its length is adjustable. At the exit of the plates, the straps become the suspenders. They go up along the torso on each side of the body, pass through a traditional chest belt, pass over the shoulders, descend into the back, cross at the shoulder blades passing through a traditional plate / thimble fastening system and join the plates at the hips. They pass through them in the two passages on the straps already in place. The straps are adjustable. At the exit of the plates, the straps become the second parts of the waders. They are each equipped with a traditional male loop and closure making it possible to connect the two parts of the waders by fitting into the female loops and to adjust the length of the waders while recovering the excess strap from all other settings. The accompanying drawing Figure 1 illustrates the fully adjustable fall arrest harness made using the device according to the invention. -3 For the realization of a fall arrest harness using the device according to the invention, it is necessary to specify certain points of

  the description and the figure which illustrates it. The mention the reference

  "traditional" is used for the attachment plate / thimble assembly (PL3), for the chest belt (CP), for the passers-by (PAS2), for the male buckle (BM), for the female buckle (BF) , because these elements not described, exist on the market in different interchangeable models. The load-bearing seams, the materials of the plates and the loops and their thickness depend on the requirements set by the standards and have no effect on

the device.

  To make a fall arrest harness using the device according to the invention illustrated in FIG. 1, the plate / thimble assembly (PL3), the chest belt (CP), the passers-by (PAS2) , the male loops (BM) and the female loops (BF) are traditional and not described. The load-bearing seams, the materials used depend on the desired resistance thresholds

  and do not affect the device.

  Figure 1 is an overall plan of the device. In this example for a strap 45 mm wide and 1.6 mm thick, the plates (PL2) are pierced with two parallel passages of 65 mm x 5 mm, the strap is marked with a sign (SF) at regular intervals, every 25 cm, and it is an arrow to indicate the direction of assembly. We cut two pieces of strap of 250 cm each starting from the middle of an interval and therefore stopping at

middle of an interval.

  At the end of each strap, a traditional rectangular female loop (BF) is placed corresponding to the width of the strap. The end of the strap crosses the female loop, is folded over a sufficient length to be sewn using a carrying seam. We cut the central buttock (SF1) with a length of 20 cm. At 30 cm from the female loops, we place the

  central buttock (SF1) by means of two load-bearing seams.

  The angle formed on each side by the central sub-buttock (SF1) and the longest strand of the strap is 160. The two shortest strands of strap, delimited at one end by the female buckle (BF), at the other end by the seam, are the parts of -4 waders (Cl) with fixed length. The two longest strands of strap cross each side of the plates (PL2) from bottom to top in the first pass, from top to bottom in the second pass. The two plates delimit the total length of the strap under the buttocks (SF2 + SF1 + SF2). After their passage in

  the plates (PL2), the straps become the suspenders (B).

  They go up along the torso, at the level of the sternum, cross on the right and on the left the two parts of a traditional chest belt (CP), pass on the shoulders, go down in the back, cross at the level of the shoulder blades while passing in a traditional plate / tether assembly (PL3) and pass through the plates (PL2) again from bottom to top in the first pass and from top to bottom in the second pass, above the strap already in place. This double passage defines the length of the strap. At the exit of the plates, the straps become the adjustable parts of the waders (C2). They cross a traditional passer-by (PAS2) then a traditional male loop (BM) whose size corresponds to the traditional female rectangular loop (BF). They cross the first pass from the top to the bottom, the second pass from the bottom to the top and then go back to go back into the passer-by (PAS2). The waders are closed by inserting the male loop (BM) of the waders part (C2) into the female rectangular loop (BF) of the waders part (Cl). The

  buckle (BM) allows adjustment of the length of the waders.

  The device according to the invention is intended to stop a fall in the field of working at height, sport or leisure. -5

Claims (2)

  1) Device for making a fully adjustable fall arrest harness, characterized in that it comprises on the one hand, placed at hip level, two crossing plates (PL2), pierced with two equal and parallel openings which allow crossing self-locking seamless straps, which allow you to adjust the length of the buttocks (SF2), the length of the suspenders (B) and secondly the thigh boots in two parts, the particularity of which is the female closure buckles (BF) are sewn on the fixed-length parts of the waders (Cl) which are an extension of the two straps under the buttocks (SF2) and whose length is defined by the seams fixing the central strap under the buttocks (SF1) to these two straps (SF2) ) while the parts of the waders (C2) each equipped with a male adjustment and closure loop (BM) are in the extension of the back straps and the adjustment of their length by means of the loop (BM) allows you to recover the excess strap from the various adjustments made using the crossing plates (PL2).   2) Device according to claim 1 characterized in that the straps used are marked with a sign, affixed at regular intervals and that the cut lengths allow these signs to be used as benchmarks for symmetrical adjustments   the right and left parts of the fall arrest harness.