| 摘要 |
<p>A tube-type tire (1) to be mounted on the rim (30) of a (e.g., spoke- type) wheel such as that commonly used by a bicycle or a motorcycle, whereby the tube-type tire will operate without a conventional inner tube and as if it were tubeless. The tire (1) includes a main tire section (3) that is seated upon the generally flat shelf (7) of the rim (30) and a pneumatic sealing ring (50) having an inner tube (5) that is seated upon the beadwell (9) of the rim. An air chamber (34) of the inner tube (5) of the sealing ring (50) is inflated to a greater pressure than an air chamber (32) of the main tire section (3) so as to isolate the air chamber of the main tire section from the rim and force the main tire section against the vertical lip (8) of the rim (30). The sealing ring (50) also has an outer inflatable liner (10) that is located in surrounding engagement with the inner tube to separate the inner tube (5) from the air chamber (32) of the main tire section (3). The outer liner (10) has one or more O-ring seals (14) projecting outwardly from the side walls thereof and a centering lip (16) projecting downwardly from the side walls. The O- ring seals (14) are moved into sealing engagement with the inside of the main tire section (3) when the air chamber (34) of the inner tube (5) is inflated and the liner (10) is expanded. The centering lips (16) of the liner (10) are seated upon the beadwell (9) of the rim (30) to cause the liner to be automatically centered over the inner tube(5).</p> |
