GB768478A - Improvements relating to pneumatic vehicle wheel tyres - Google Patents
Improvements relating to pneumatic vehicle wheel tyresInfo
- Publication number
- GB768478A GB768478A GB8316/55A GB831655A GB768478A GB 768478 A GB768478 A GB 768478A GB 8316/55 A GB8316/55 A GB 8316/55A GB 831655 A GB831655 A GB 831655A GB 768478 A GB768478 A GB 768478A
- Authority
- GB
- United Kingdom
- Prior art keywords
- bead
- cores
- core
- reinforcement
- tyre
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60C—VEHICLE TYRES; TYRE INFLATION; TYRE CHANGING; CONNECTING VALVES TO INFLATABLE ELASTIC BODIES IN GENERAL; DEVICES OR ARRANGEMENTS RELATED TO TYRES
- B60C15/00—Tyre beads, e.g. ply turn-up or overlap
- B60C15/04—Bead cores
- B60C15/05—Bead cores multiple, i.e. with two or more cores in each bead
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Tires In General (AREA)
Abstract
768,478. Pneumatic tyres. PIRELLI SOC. PER AZIONI. March 22, 1955 [March 27, 1954], No. 8316/55. Class 144 (2). A pneumatic tyre in which the bead comprises one or more bead cores 1 of wire around which the ply or plies of the tyre carcass are wrapped has included in the bead structure a reinforcement 5 consisting of at least one layer of fabric disposed in the structure to lie against the bead core or cores 1 laterally thereof to stiffen the structure against deflection of the body of the bead relative to and around the core or cores 1 the layer merely flanking and not being wrapped around the bead core or cores. In the arrangement shown in Fig. 3 the reinforcing strip 5 is placed between the bead cores 1 and the whole assembly is surrounded by a flipper strip 4. In a further arrangement shown in Fig. 4 three reinforcing strips 5, 6 are placed between two bead cores 1. In a further modification, shown in Fig. 5, the reinforcement 5 consists of a single strip of fabric folded around an auxiliary core A and placed against the side of a single bead core 1 or between two bead cores, Fig. 6 (not shown). The reinforcement may be of the " cord " type with the direction of lay of the cords the same or different in the various layers. When the same the direction of lay at any given point along the reinforcement, circumferentially of the tyre, is parallel to a plane radial to the tyre, containing the rotational axis thereof and passing through said point and when different the several directions are symmetrically arranged with respect to said plane. The bead cores 1 are rectangular, the width L, Fig. 4, being one third to a half of the height H. When two or more reinforcing layers 5, 6 are used the lower edges are level with the bottom of the bead core or cores and the upper edges may be level or of different heights.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
IT768478X | 1954-03-27 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB768478A true GB768478A (en) | 1957-02-20 |
Family
ID=11316061
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB8316/55A Expired GB768478A (en) | 1954-03-27 | 1955-03-22 | Improvements relating to pneumatic vehicle wheel tyres |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB768478A (en) |
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2992671A (en) * | 1957-05-03 | 1961-07-18 | Goodrich Co B F | Pneumatic tire bead construction |
US3044522A (en) * | 1957-07-10 | 1962-07-17 | Dunlop Rubber Co | Pneumatic tyre covers |
DE1189400B (en) * | 1957-03-14 | 1965-03-18 | Michelin & Cie | Pneumatic vehicle tires with inextensible annular bead layers in the circumferential direction |
DE1505013B1 (en) * | 1959-10-12 | 1972-03-23 | Firestone Tire & Rubber Co | Pneumatic vehicle tires with fiber-reinforced inserts |
US4781232A (en) * | 1986-01-31 | 1988-11-01 | Continental Aktiengesellschaft | Pneumatic vehicle tire bead structure |
-
1955
- 1955-03-22 GB GB8316/55A patent/GB768478A/en not_active Expired
Cited By (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE1189400B (en) * | 1957-03-14 | 1965-03-18 | Michelin & Cie | Pneumatic vehicle tires with inextensible annular bead layers in the circumferential direction |
US2992671A (en) * | 1957-05-03 | 1961-07-18 | Goodrich Co B F | Pneumatic tire bead construction |
US3044522A (en) * | 1957-07-10 | 1962-07-17 | Dunlop Rubber Co | Pneumatic tyre covers |
DE1505013B1 (en) * | 1959-10-12 | 1972-03-23 | Firestone Tire & Rubber Co | Pneumatic vehicle tires with fiber-reinforced inserts |
US4781232A (en) * | 1986-01-31 | 1988-11-01 | Continental Aktiengesellschaft | Pneumatic vehicle tire bead structure |
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