RU2106979C1 - Resiliently flexible antislip device - Google Patents

Abstract

FIELD: automotive industry; automobile wheel antislip devices. SUBSTANCE: proposed antislip devices are to be mounted for winter on elastic tyres of automobiles, both on front and rear driven and driving wheel. Device encloses tyre 1 over tread and has antislip members made in form of resiliently flexible antislip studs. Device is made in form of closed resiliently flexible zigzag hoop. Resiliently flexible studs 2 arranged on surface of tyre tread and secured by couplers 3 are connected in series with each other. Couplers 3 of six types are available. Hoop is fixed on tyre 1 by means of resiliently flexible braces 23, arranged over tyre circumference on couplers 3 or by means of bridges connecting two couplers close to each other. Device can be used on any roads, at any driving speeds being most perspective on ice coated roads. To operate the device on rough terrains, special quick-release grousers 34 can be mounted on tyre 1. EFFECT: enlarged operating capabilities. 53 cl, 33 dwg

Description

 The claimed technical solution relates to the field of transport engineering and can be used in various sectors of the economy when designing devices to prevent slipping and slipping of wheels of trackless vehicles (cars, tractors, motorcycles, etc.) under conditions of use on slippery roads and on impassable roads . Mainly, the anti-skid device is designed for car tires, and the device relates to devices that are temporarily mounted on the tires.

 It is known an anti-skid device for a tire of a wheel of a trackless vehicle, covering the tire along the treadmill, which contains anti-skid elements made in the form of flexible cables with bushes put on them, and flexible hummocks using hooks attached to flexible couplers located on the sidewalls of the tire (see USSR patent N 1149863, B 60 C 27/06, 1981).

The disadvantages of such a device are:
1) the complexity of the design, caused, in particular, by the need to have special complex locking mechanisms;
2) it is difficult to mount and disassemble the device;
3) large dimensions and weight;
4) low damping.

 The prototype of the claimed technical solution is an anti-skid device for a tire of a wheel of a trackless vehicle, covering the tire along the treadmill of the tread, containing anti-skid elements made in the form of elastic flexible rods located on the tread surface of the tire. In this case, elastic-flexible rods equipped with elements of adhesion to the road surface, their end parts made in the form of a helical spring, are attached to flexible elastic elongated couplers of the anti-skid device located in the shoulder zones of tires (see ed. St. USSR N 1720899, B 60 C 27 / 06, 1992).

This anti-skid device has the following disadvantages:
1) low reliability of fixing the anti-skid element in a certain position on the tread;
2) complex assembly of anti-skid elements.

 The technical result of the invention is achieved as a result of the fact that the anti-skid device is made in the form of a closed elastic-flexible zigzag curved bracelet, while the elastic-flexible rods located on the tread surface of the tire with the help of couplings are connected to each other in series.

 As well as the prototype, the proposed anti-skid device covers the tire along the treadmill and contains anti-skid elements made in the form of elastic flexible rods located on the tread surface of the tire.

 But at the same time, the proposed device has significant differences. These differences consist in the fact that the proposed device is made in the form of a closed elastic-flexible zigzag curved wrap-bracelet, while the elastic-flexible rods located on the tread surface of the tire with the help of couplings are connected in series with each other.

 In additional claims of the proposed device, there are other significant differences.

 The prototype and other known anti-skid devices do not have such essential signs.

 All of the above differences in the structural features of the proposed anti-skid device from the structural features of the prototype are very significant, due to which the technical result of the invention is achieved. The proposed anti-skid device has such properties that are absent and, in principle, cannot be in the prototype. As a result, not only the operational characteristics of the anti-skid device are significantly improved, but also the scope of such devices is expanding.

 The listed distinguishing features are unknown at all. Therefore, it can be argued that the claimed technical solution meets the criterion of "significant novelty."

 Figure 1 shows the anti-skid device with V-shaped couplings, General view (fragment).

 Figure 2 is the same, a top view (fragment).

 Figure 3 is a General view of a V-shaped coupling (enlarged).

 Figure 4 is an elastic flexible rod, an annular groove (enlarged) is made on the surface of its end part.

 In FIG. 5 - anti-skid device with couplings having a U-shaped part, bent in the form of a hook, General view (fragment).

 Figure 6 is the same, a top view (fragment).

 Figure 7 - screed made of elastic material reinforced with high-strength threads, the screed is located on couplings having a U-shaped. part bent in the form of a hook (enlarged).

 In FIG. 8 is a cross-sectional view of a coupler located on a sleeve having a U-shaped portion bent in the form of a hook, bent in the form of a hook (enlarged).

 In FIG. 9 - the cross section of the device located on the tire (the cross section runs along the anti-skid element) is increased.

 In FIG. 10 - the same, the section runs along the quick-release lug, the couplings have a U-shaped part, bent in the form of a hook.

 In FIG. 11 is an elastic flexible rod, in which the cross-sectional profile is rectangular, and on the surface of the rod facing the road, protrusions are provided (general view), the rod is attached to a sleeve made of a tube (enlarged).

 On Fig is the same, top view (enlarged).

 In Fig.13 is the same cross-section (enlarged).

 In FIG. 14 - anti-skid device with couplings, each of which has several bends, general view (fragment).

 On Fig - jumper with a rectangular cross-sectional profile, General view (enlarged).

 In Fig.16 is the same, a top view (enlarged).

 On Fig - the same cross-section (enlarged).

 In FIG. 18 - coupling made in the form of a plate, on the edges of which protrusions bent around elastically flexible rods are provided; holes for connecting jumpers are provided on the plate; general view (enlarged).

 In FIG. 19 is a cross section of an elastic flexible rod in the place of its attachment to the plate (enlarged).

 In FIG. 20 - a coupling made in the form of a plate, at the edges of which protrusions bent around elastically flexible rods are provided; hooks are provided on the plate on which the screed is located, general view (enlarged).

 In FIG. 21 is a cross-sectional view of a coupler located on a plate hook (enlarged).

 On Fig - screed, in which at the ends of the flexible rod is a sleeve, crimped around the rod (enlarged).

 In FIG. 23 - coupler, in which at the ends of the flexible rod and on the end parts of the coupling a thread is made (enlarged).

 In Fig.24 is a cross section of an elastic flexible screed rod on which a coating of elastic material is made (enlarged).

On Fig - anti-skid device with couplings made in the form of a sleeve, General view;
On Fig is the same, a top view;
In FIG. 27 - a sleeve made in the form of a sleeve, which is connected to the elastic flexible rods using threads.

 On Fig - anti-skid device with couplings made in the form of a ring, General view.

 In Fig.29 - the clutch made in the form of a ring (enlarged).

 On Fig - elastic flexible rod made in the form of a tape with tips, and the longitudinal edges of the tape are periodically curved in the form of shell-shaped teeth, general view (enlarged).

 On Fig - the same top view (enlarged).

 On Fig - the same, a transverse section of the tape on the teeth.

 In FIG. 33 - elastic flexible rod with a rectangular cross-sectional profile, on the surface of the rod is a layer of rubber containing abrasive particles, the cross-section (enlarged).

 The anti-skid device for a tire of a trackless vehicle wheel covers the tire 1 along the tread track and contains anti-skid elements made in the form of elastic flexible anti-skid rods 2. The device is made in the form of a closed elastic flexible zigzag curved bracelet, located on the surface the tread of the tire 1, the elastic flexible anti-skid rods 2 by means of couplings 3 are connected in series with each other. The couplings 3 can be made both rigid and elastic, it is recommended that the couplings be curved along the profile of the tire 1 and position them best in the shoulder areas of the tire.

 There can be six types of couplings 3 in total.

First, we consider three types of couplings 3, which are made in the form of a curved rod 4 connected by its end parts 5 to the end parts 6 of the elastic flexible anti-skid rods 2 (Figs. 1-3, 5-11, 14);
I. The coupling 3 of the first type, in which the rod 4 is curved V-shaped (Fig. 1-3).

 II. The coupling 3 of the second type having a U-shaped part, bent in the form of a hook 7 (Fig.5-8, 10).

 III. The coupling 3 of the third type (Fig).

 In the end parts 5 of these couplings 3, axial holes 8 are made for connecting the end parts 6 of the elastic flexible anti-skid rods 2. The end part 6 of the elastic flexible anti-skid rod 2 can be connected to the coupling 3 by soldering or by crimping the coupling around the rod, while on the surface end parts of an elastic flexible rod can be made end grooves 9 (figure 4).

 The holes 8 in the couplings can be made with a thread 10 (Figs. 7, 9, 11), and on one side of the tire 1 there are couplings 3 on which the right-hand thread is made, and on the other side of the tire are couplings on which the left-hand thread is made.

The couplings 3, located on opposite sides of the tire 1, are connected to each other by means of elastic flexible anti-skid rods 2 with a thread 11 at the end parts 6, and each such rod has a left-hand thread on one end part. At both ends of the coupling 3 with left-hand thread, risks 12 are performed (Fig. 9), indicating that the left-hand thread is made inside the coupling. To attach an elastic flexible rod 2 having a right and left thread to the couplings 3 can be in the following sequence:
1) wrap one or two threads in the corresponding sleeve end with the left thread of this rod;
2) wrap one or two threads of the end with the right-hand thread of this rod into the corresponding sleeve;
3) using pliers, screw this rod simultaneously into both couplings until it stops.

 The elastic flexible anti-skid rods 2 can be different in design, the cross-sectional profile of the rods can be round or rectangular (Fig. 11-13, 30-33). Elastic flexible anti-skid rods 2 will be the simplest and cheapest if they are made of steel spring wire. On the elastic flexible anti-skid rod 2 can be applied wear-resistant coating, it can be located wear-resistant ring 13 (figure 4).

 At the rod 2 with a rectangular cross-sectional profile on the surface facing the road surface, protrusions 14 are provided (Figs. 11-13), a thread 11 is made on its end parts.

 Consider the second version of the rod 2 with a rectangular cross-sectional profile; here the rod is made in the form of a tape 15, and the longitudinal edges of the tape are periodically curved in the form of shell-shaped teeth 16.

 At this rod, on the end parts of the tape 15, there are tips 17 with an external thread 11 for connection to the coupling 3, and on the surfaces of the end parts of the tape there are protrusions 18 and depressions 19 for more reliable fixing of the tips.

 There is a third version of an elastic flexible anti-skid rod 2 with a rectangular cross-sectional profile; here the rod is made in the form of a tape 20, on the surface of which is a layer of rubber 21 containing abrasive particles 22 (Fig. 33).

 The wrap bracelet is equipped with two ties 23, made in the form of a closed flexible ring located on the couplings 3 around the circumference of the shoulder area of the tire, with one tie located simultaneously on all couplings on one side of the tire, and the other tie located on all couplings on the other side of the tire. Using the ties 23, the wrap bracelet is fixed in a certain position on the tire.

 For couplings of the second type, couplers 23 are located on hooks 7 provided for these couplings.

The following are options for couplers 23:
1. The screed 23 is made of elastic material 24 reinforced with high-strength threads 25 (Fig.7 and 8).

 2. The coupler 23 is made in the form of a ring woven from high strength threads.

 3. The coupler 23 is made in the form of a ring-shaped curved elasto-flexible rod 26, which has hooks 27 hooked at each other at the ends (FIGS. 5 and 6).

 4. The coupler 23 is made in the form of a ring-shaped curved elasto-flexible rod 28, in which the ends are connected using a sleeve 29, made in the form of a sleeve 29 (Fig.22 and 23).

 This version of the screed 23 can be made in two versions.

 In the first embodiment, the heads 30 are made at the ends of the elastic flexible rod 26 of the coupler, and a coupling 29 is located on these heads, which is crimped around the rod (Fig. 22).

 In the second embodiment, threads 31 are made at the ends of the elastic flexible tie rod 26 and at the end parts of the coupling 29, moreover, a right-hand thread is made in one place of their connection and a left-hand thread is made in another place of their connection. At the coupling 29 at the end end with the left-hand thread, risk 32 is performed (Fig. 23). On the elastic flexible rod 26 of the screed can be made coating 33 (Fig.24) of an elastic material.

 The wrap bracelet is equipped with quick-release lugs 34, made in the form of a helical spring, at the ends of which hooks 35 are provided, hooked on the couplings 3 or on other elements of the device located on opposite sides of the tire 1 (6 and 10). Quick-release lugs are designed to increase wheel patency in off-road conditions. On a wrap bracelet containing couplings 3 of the second type, on one side of the tire 1, the quick-release latch hook 35 is hooked to the coupler 23 in the plane of symmetry of the coupling 3, and on the other side of the tire, the other lug hook 35 is hooked to the other coupler 23 in the middle of the distance between the couplings 3 (Fig.6).

 Now about the coupling 3 of the third type. This coupling 3 has several bends. The first bend 36 provided in the middle part of the coupling is directed by its protrusion towards the nearest to the treadmill portion of the tread, the other two bends 37 of the coupling are located symmetrically on both sides of the first bend 36 and face each other with the valleys of their bends (Fig. 14).

 The wrap bracelet containing the clutch 3 of the third type is fixed in a certain position on the tire 1 using jumpers 38 (Fig.14 -17). The jumper 38 connects to each other the two nearest adjacent couplings 3. Each jumper 38 is made in the form of a bracket with hooks 39 provided at its ends, hooked to the bends 37 of the couplings 3. The middle part of the jumper 38 is bent, and the bend 40 is directed with its protrusion towards the side closest to him a section of the treadmill. The cross-sectional profile of the jumper 38 may be round or rectangular (Fig.15-17).

 At the wrap-bracelet containing the clutches 3 of the third type, on one side of the tire 1, the hook 35 of the quick-release lug 34 (see Fig. 6) is hooked to the bend 36 of the clutch 3 (Fig. 14), and on the other side of the tire another hook 35 of the lug is engaged for bending 40 of the jumper 38 (Fig.14 and 15).

 Clutches 3 of the first, second and third types can be made of wire (figure 3, 7, 9) or tube (figure 11).

 Now we can move on to the description of other types of couplings 3, which are significantly different from the first three types.

 The clutch of the fourth type is made in the form of a plate 41, on the edges of which there are protrusions 42 bent around the elastic flexible anti-skid rods 2 (Figs. 18-21). The end portion 43 of each elastically flexible anti-skid rod 2, which is located on the sleeve, is L-shaped. On the edge of the plate 41, the farthest from the treadmill, a groove 44 is made.

 This coupling 3 (fourth type) can be made in two versions. In the first embodiment of the coupling 3 on the plate 41, holes 45 are made on both sides of the groove 44 (Fig. 18), designed to connect jumpers 38 to them (Fig. 15-17). In the second embodiment of the coupling 3 (fourth type) on the plate 41, hooks 46 are provided on both sides of the groove 44 (Fig. 20), designed to accommodate the couplers 23 on them (Figs. 5-8, 22 and 23).

 At the wrap bracelet containing the coupling 3 (fourth type) of the first design on one side of the tire 1, the hook 35 of the quick-release lug 34 (see Fig. 6) is hooked to the groove 44 of the plate 41, and on the other side of the tire another hook 35 of the lug is hooked 40 jumpers 38 (FIGS. 15 and 14).

 In the wrap bracelet containing the clutch 3 (fourth type) of the second design on one side of the tire 1, the hook 35 of the quick-release lug 34 is hooked to the coupler 23 in the middle of the distance between the hooks 45 of the plate 41 of the clutch 3, and on the other side of the tire another hook 35 of the lug is hooked another screed 23 in the middle of the distance between the couplings 3.

 The next coupling 3, the fifth type coupling, is made in the form of a sleeve 47 with an axial hole 48, in which are located the end parts 5 of the connected elastic flexible anti-skid rods 2 (Fig. 25-27). The end part 6 of the elastic flexible anti-skid rod 2 can be attached to the sleeve 47 by soldering or by squeezing the sleeve around the rod, and also using thread 49 (Fig. 27), and one right-hand thread is made on one end part 50 of the sleeve, and on the other end part 51 of the sleeve, an internal left-hand thread is made.

 Risk 52 is made at sleeve 47 at the end end of end 51 with left-hand thread. Between adjacent bushings 47 there are jumpers 53 made in the form of a bracket with hooks 54 provided at its ends, which are hooked to elastic-flexible anti-skid rods 2, and one hook of the jumper is hooked to one elastic-flexible an anti-skid rod near the point of its connection with one sleeve 47, and another hook of this jumper is hooked to another elastically flexible anti-skid rod near the place of its connection with another sleeve 47. For more reliable engagement to the handle 54 for the elastic flexible anti-skid rod 2 on this rod is made bend 55. The elastic flexible anti-skid rod 2 is made bent along the profile of the tire 1.

 The last coupling 3, the sixth type coupling, is made in the form of a ring 56 (Figs. 28 and 29). For a wrap bracelet containing such couplings 3, the end parts of the elastic flexible anti-skid rods 2 are made in the form of a hook 57, and for adjacent elastic flexible anti-skid rods, the connected end parts are symmetrically relative to each other.

 The elastic flexible anti-skid rod 2 can be made of spring wire.

 Even before the assembly of the device, each elastically flexible anti-skid rod 2 must be bent along the profile of the tire 1, so that it is firmly pressed against the tire surface along its entire length.

 The ring 56 can be made round or oval-shaped (Fig.29), and it can be made split. If the ring 56 is round, then to increase reliability it is desirable to perform it solid, without a cut.

 The wrap bracelet containing the clutch 3 of the sixth type, is fixed on the tire 1 in a certain position using jumpers 38 (Fig.28, 15-17). The jumper 38 connects to each other the two nearest adjacent rings 56. On the part of the ring 56 that is farthest from the tire, a bend 58 is made, directed towards the treadmill.

 At the wrap-bracelet containing the sixth type couplings 3, on one side of the tire 1, the quick-release lug hook 35 (see FIG. 6) is hooked to the bend 58 of the ring 56, and on the other side of the tire, the other lug hook 35 is hooked to the bend 40 of the jumper 38 .

The assembly of the wrap-bracelet and its mounting on the bus can be made in the following sequence:
1) attach all the elastic flexible anti-skid rods 2 to their corresponding couplings 3;
2) jack the wheel or completely remove it from the axis of the vehicle (if the couplers 23 are made integral);
3) with the help of a mounting blade, put the wrap-bracelet on the bus (this is not difficult to do, since the wrap-bracelet is made elastic and flexible), it is recommended that the wrap-bracelet be installed at a reduced air pressure in the tire;
4) put in place the ties 23 or jumpers 38 (depending on the type of couplings 3);
5) to install quick-release lugs 34, if necessary (for example, to travel along a country road into the autumn roadway).

 The wrap bracelet works as follows.

 When the wheel moves on a slippery road surface, the elastic-flexible anti-skid rods 2 catch on the unevenness of the coating, which eliminates both slipping of the wheel and its sliding (including side).

 Due to the fact that the ties 23 and the elastic flexible anti-skid rods 2 are made sufficiently elastic and flexible, the wrap-bracelet is always tightly pressed to the tire surface regardless of the air pressure in the tire.

Thus, the achieved technical result of the proposed anti-skid device is as follows:
1) eliminates all of the above disadvantages of the prototype;
2) the extreme simplicity of the device;
3) the extremely low weight of the device;
4) a very large scope;
5) with such devices, you can ride at any speed, as they are completely silent and will not damage either the surface of the tire or the surface of the road.

Claims (53)

 1. An elastic flexible anti-skid device for a tire of a trackless vehicle wheel, covering the tire along the treadmill of the tread, comprising anti-skid elements made in the form of elastic flexible anti-skid rods located on the tread surface, characterized in that it is made in the form of a closed elastic flexible zigzag curved bracelet while the elastic-flexible anti-skid rods located on the tire tread surface with the help of couplings are sequentially connected enes with each other.  2. The device according to claim 1, characterized in that the holes are made in the couplings for attaching the end parts of the elastic flexible anti-skid rods.  3. The device according to claim 2, characterized in that the end portion of the resiliently flexible anti-skid rod is connected to the coupling by soldering.  4. The device according to claim 1, characterized in that annular grooves are made on the surface of the end parts of the elastic flexible anti-skid rod.  5. The device according to claim 4, characterized in that the end portion of the resiliently flexible anti-skid rod is attached to the coupling by compressing the coupling around the rod.  6. The device according to claim 2, characterized in that the holes in the couplings are threaded.  7. The device according to claim 6, characterized in that on one side of the tire there are couplings on which the right-hand thread is made, and on the other side of the tire are couplings on which the left-hand thread is made.  8. The device according to claim 7, characterized in that the couplings located on opposite sides of the tire are connected to each other by means of elastic flexible anti-skid rods with threads on their end parts, and each such rod has a right-hand thread on one end part, and left thread is made on the other end part.  9. The device according to claim 1, characterized in that the coupling is made elastic.  10. The device according to claim 1, characterized in that the coupling is made curved along the profile of the tire.  11. The device according to claim 1, characterized in that the couplings are located in the shoulder areas of the tire.  12. The device according to p. 11, characterized in that the clutch is made in the form of a curved rod connected by its end parts to the end parts of the elastic flexible anti-skid rods.  13. The device according to p. 12, characterized in that the coupling rod is curved V-shaped.  14. The device according to p. 12, characterized in that the coupling has a U-shaped part, which is bent in the form of a hook.  15. The device according to p. 12, characterized in that the clutch has several bends, and the first bend provided in the middle part of the clutch is directed by its protrusion towards the nearest section of the treadmill, and the other two bends of the clutch are located symmetrically on both sides of the first bend and facing each other with the valleys of their bends.  16. The device according to p. 11, characterized in that the clutch is made in the form of a plate, on the edges of which there are protrusions bent around elastically flexible anti-skid rods.  17. The device according to clause 16, wherein a groove is made on the edge of the plate farthest from the treadmill.  18. The device according to 17, characterized in that on the plate on both sides of the groove hooks are provided.  19. The device according to 17, characterized in that the holes are made on the plate on both sides of the groove.  20. The device according to clause 16, characterized in that the end portion of the elastic flexible anti-skid rod located on the coupling, L-shaped curved.  21. The device according to claim 1, characterized in that a wear-resistant coating is applied to the elastic flexible anti-skid rod.  22. The device according to claim 1, characterized in that wear-resistant rings are located on the elastic flexible anti-skid rod.  23. The device according to claim 1, characterized in that the cross-sectional profile of the elastic flexible anti-skid rod is round.  24. The device according to claim 1, characterized in that the cross-sectional profile of the elastic flexible anti-skid rod is rectangular, and protrusions are provided on the surface of the rod facing the road surface.  25. The device according to paragraph 24, wherein the protrusions and depressions are provided on the surface of the end parts of the elastic flexible anti-skid rod.  26. The device according to p. 24, characterized in that on the end sections of the elastic flexible anti-skid rod are located tips for attaching them to the couplings.  27. The device according to p. 26, characterized in that on the end part of the tip, non-contacting with an elastic flexible anti-skid rod, an external thread is made.  28. The device according to p. 1, characterized in that the coupling is made in the form of a tube.  29. The device according to claim 1, characterized in that on the surface of the elastic flexible anti-skid rod is a rubber layer containing abrasive particles.  30. The device according to claim 1, characterized in that it is equipped with two couplers made in the form of a closed flexible ring located on the couplings around the circumference of the shoulder area of the tire, with one coupler located simultaneously on all couplings on one side of the tire, and the other coupler located simultaneously on all couplings on the other side of the tire.  31. The device according to p. 30, characterized in that the screed is made of elastic material reinforced with high strength threads.  32. The device according to p. 30, characterized in that the screed is made in the form of a ring-shaped curved elastic flexible anti-skid rod, which has hooks hooked at each other at the ends.  33. The device according to claim 1, characterized in that each clutch is connected to two adjacent adjacent couplings using jumpers, each jumper made in the form of a bracket with hooks provided at its ends engaged with the couplings.  34. The device according to p. 33, characterized in that the middle part of the jumper is curved, and the bend is directed by its protrusion towards the nearest section of the treadmill.  35. The device according to p, characterized in that the cross-sectional profile of the jumper is round.  36. The device according to p. 33, characterized in that the cross-sectional profile of the jumper is rectangular.  37. The device according to claim 1, characterized in that it is equipped with quick-release lugs made in the form of a helical spring, at the ends of which hooks are hooked on the couplings or other elements of the device located on opposite sides of the tire.  38. The device according to p. 30, characterized in that the screed is made in the form of a closed flexible ring woven from high strength threads.  39. The device according to p. 1, characterized in that the elastic flexible anti-skid rod is made curved along the tire profile.  40. The device according to p. 39, characterized in that the clutch is made in the form of a sleeve.  41. The device according to p. 40, characterized in that the sleeve is connected to the elastic flexible anti-skid rods with a thread, with an internal right-hand thread being made on one end of the sleeve and an internal left-hand thread at the other end of the sleeve.  42. The device according to p. 40, characterized in that between the adjacent bushes are jumpers made in the form of a bracket with hooks provided at its ends, which are hooked to the elastic flexible anti-skid rods, and one hook of the jumper is engaged to one elastic flexible anti-skid rod near the junction with one sleeve, and the other hook of this jumper is hooked to another elastically flexible anti-skid rod near the point of its connection with the other sleeve.  43. The device according to paragraph 24, wherein the elastic flexible anti-skid rod is made in the form of a tape, and the longitudinal edges of the tape are periodically bent in the form of shell-shaped teeth.  44. The device according to p. 30, characterized in that the screed is made in the form of a ring-shaped curved elastic flexible rod, in which the ends are connected using a sleeve made in the form of a sleeve.  45. The device according to item 44, wherein the ends are made heads at the ends of the elastic flexible screed rod, and on these heads is a sleeve that is crimped around the rod.  46. The device according to item 44, wherein the ends are made on the ends of the elastic flexible screed rod and on the ends of the coupling, moreover, a right-hand thread is made in one place of their connection and a left-hand thread is made in another place of their connection.  47. The device according to item 44, wherein the coating is made of an elastic material on an elastic flexible screed rod.  48. The device according to § 39, characterized in that the end parts of the elastic flexible anti-skid rods are made in the form of a hook, and for adjacent elastic flexible anti-skid rods, the connected end parts are symmetrically relative to each other, and the coupling connecting them is made in the form of a ring.  49. The device according to p, characterized in that the ring is made round.  50. The device according to p, characterized in that the ring is oval-shaped.  51. The device according to p, characterized in that the ring is split.  52. The device according to p. 50, characterized in that on the part of the ring farthest from the tire, a bend is made, directed towards the treadmill.  53. The device according to p, characterized in that the ring is solid.

Images