DE1061504B - Segment-shaped jacket for vulcanizing when repairing pneumatic tires - Google Patents

Description

GERMAN

The invention relates to a segment-shaped inflatable body for vulcanization in the repair of Tire. Inflatable bodies are already known to be used during vulcanization, in particular during repair of pneumatic tires, an internal pressure against the tire, e.g. B. against the point to be repaired Tire carcass to exercise. So an inflatable body is known which has a solid inner core which is permanently connected to the inflatable body.

The previously known inflatable bodies are suitable for being used in ordinary tires, i. H. in they can be inserted and removed when the bead portion of the tire is large enough Diameter.

In the case of heavy pneumatic tires that are only slightly sideways Opening, but have a very large tire body in cross-section, e.g. B. with heavy all-terrain Tires, it is difficult or in many cases even impossible to get into such a tire for the entrance mentioned purpose of introducing an inflatable body in order to carry out a repair.

The repair measures are considerably facilitated by the inflatable body according to the invention.

In the case of a segment-shaped inflatable body for vulcanization in the repair of pneumatic tires where the inner distance between the side walls, measured in the axial direction, is greater than the clear diameter on the bead edge, according to the invention, the inflatable body has one from the concave side to over U-shaped inlets protruding into the middle of its cross-section and extending over its entire length --- ■ · indentation for receiving a fixed insert '- " and holding parts attached on the concave side on the edge parts next to the indentation.

This is the distance between the bottom of the indentation and the apex of the inflatable body suitably less than the distance between the sides of the cavity and the side walls of the Body.

The indentation preferably has a uniform depth and uniformity over the entire length of the inflatable body U-shaped cross section.

In general, the indentation is arranged symmetrically to the center plane of the inflatable body.

In the drawings illustrating a preferred embodiment of the invention is

1 shows a perspective view of an exemplary embodiment of the inflatable body according to the invention,

Fig. 2 is a cross-sectional view of the inflatable body and the fixed insert, wherein the inflatable body is shown in dashed lines in the folded position,

Fig. 3 is a cross-sectional view of the inflatable body, segment-shaped Inflatable body

for vulcanizing during repairs

of pneumatic tires

Applicant:

The Goodyear Tire & Rubber Company, Akron, Ohio (V. St. A.)

Representative: Dipl.-Ing. W. Meissner,

Berlin-Grunewald, Herbertstr. 22

and Dipl.-Ing. H. Tischer, Munich 2, patent attorneys

Claimed priority: V. St. v. America from. June 24, 1955

and the insert in position in a tire carcass,

Fig. 4 is a perspective view showing the inflatable body in the folded state upon insertion points in the longitudinal direction behind the beads of a tire carcass,

Fig. 5 is a perspective view with parts broken away showing the inflatable body in position in the tire and the insert shows how it is longitudinally past the beads of the tire is used.

In the drawings, the inflatable body has a body part 1 of substantially arcuate shape, which runs out into ends 2 and 3.

The inflatable body can be made of rubber material reinforced with fabric and is able to to absorb great pressure. The thickness of the walls is such that the body when the air is released is, maintains its shape or that the inflatable body, in other words, is relatively stiff.

The end of the body 2 is provided with a valve 4 for the introduction of air, steam or other Fluid is provided in it, while the end 3 has an outlet valve 5 and a hose 6 for emptying owns. The inflatable body has a concave cavity or one that extends in the longitudinal direction Indentation 7 provided, which extends from the inner ■ Drnfang or bottom 8 radially against the apex 9 of the

909 577/396

Claims (4)

Body stretches. The indentation 7 is symmetrical in cross section to the center plane of the body and extends over the full length in the longitudinal direction of the inflatable body radially over a substantial part of the radial cross-sectional diameter of the body, as indicated by the letter R in Fig. 3 of the drawings. The inflatable body is thus forked or essentially U-shaped in cross section, the distance between the base 10 of the groove and the apex 9 being less than the distance between the parallel walls 11 of the groove and the side walls 12 of the body. This cross-sectional shape allows the inflatable body to be folded or collapsed along its median plane by compressing or compressing each bottom 8 transversely. As illustrated in dash-dotted lines in FIG is collapsed, which makes it possible to use it in a tire with a smaller bead diameter than the inner cross-sectional diameter, as described below. The outer wall of the inflatable body, which is formed by the apex 9 and side walls 12, has an outline which has essentially the same cross-sectional shape as the inner surface of the tire to be repaired 13, which has an inner cross-sectional diameter S, as shown in FIG. which is much larger than the diameter B of the bulges 14. In use, the inflatable body 1 is folded along its longitudinal plane and secured in the folded position by suitable clips 15 which are connected to the eye bolts 16, the latter being attached to each inner circumference 8 . When the inflatable body is in the folded position, the beads 14 of the tire carcass 13 to be repaired are spread by spreading tools 17 and the folded body is inserted longitudinally behind the beads of the tire, as shown in Figure 4 of the drawings is. After the inflatable body has been placed in the tire, as shown in Figure 5, the clips 15 are removed from the eye bolts 16 so that the body goes into the unfolded position or is allowed to return to its original shape. The insert piece 18 is then passed in the longitudinal direction through the bead opening of the tire and inserted into the indentation 7 of the body. The insert is made of solid material, preferably metal, and has essentially the same cross-sectional shape as the indentation 7. When the inflatable body and insert according to FIG. 3 are assembled in position, the body is inflated through the valve 4, whereby essentially more uniformly Pressure is exerted on the inner surface of the tire carcass in order to press the outer surface of the carcass against the repair form, not shown. Patent claims: 1. Segment-shaped inflatable body for vulcanizing in the repair of pneumatic tires, in which the inner, measured in the axial direction The distance between the side walls is greater than the clear diameter at the bead edge, characterized in that that the inflatable body one from the concave side to over the middle of its cross section protruding and extending over its entire length U-shaped indentation for Receipt of a fixed insert and on the concave side on the edge parts next to the indentation Has attached holding parts. 2. inflatable body according to claim 1, characterized in that the distance between the Bottom (10) of the indentation (7) and the apex (9) of the inflatable body less than the distance between the sides (11) of the cavity (8) and the side walls (12) of the body (1). 3. inflatable body according to claim 1 or 2, characterized in that the indentation (7) on the entire length of the inflatable body (1) has a uniform depth and U-shaped cross-section. 4. inflatable body according to one of the preceding claims, characterized in that the indentation (7) is arranged symmetrically to the central plane of the inflatable body (1). Considered publications:
U.S. Patent No. 2,138,585. 1 sheet of drawings © 909 577S96 7.59