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US 2015/0090385 A1Published application
Tire assembly for a bicycle rim
AssigneeRalf Bohle GmbH
InventorsMarkus HACHMEYER, Oliver ZUTHER
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AssigneeRalf Bohle GmbH
InventorsMarkus HACHMEYER, Oliver ZUTHER
Estimating the term…
The invention relates to a tire assembly for a bicycle rim, comprising a wheel tire with a tread surface and two tire beads which in the mounted condition bear on the interior side of the rim edges, an inner tire which in the mounted condition is disposed within the wheel tire, a tube which in the mounted condition is disposed within the inner tire, valve means for filling with different air pressures, on the one hand side, the tube and, on the other hand side, an intermediate space between the rim and the wheel tire, wherein the inner tire in the filled and mounted condition bears on the tire beads of the wheel tire at least in sections and presses said beads against the rim, wherein the inner tire is provided with a first through opening in its wall, wherein the first through opening in the mounted condition is in communication with the intermediate space between the rim and the wheel tire, and wherein an insert part is provided which in the mounted condition is disposed between the rim and the tube, and between the tube and the inner tire, and which at least in sections forms an air duct between the rim and the tube, and between the tube and the inner tire up to the through opening in the inner tire.
A tire assembly for a bicycle rim (22), comprising
The tire assembly according to at least one of the preceding claims, characterized in that the second valve (34) has a valve base plate (44) made of elastic material extending in the circumferential direction of the tire assembly and which is arranged between the insert part (40) and the tube (30) at least in sections.
The tire assembly according to at least one of the preceding claims, characterized in that the insert part (40) has a brace-type design and encompasses the tube (30) or the inner tire in sections.
The tire assembly according to at least one of the preceding claims, characterized in that the inner tire (24) is made of air-permeable fabric at least in sections.
The tire assembly according to at least one of the preceding claims, characterized in that the inner tire (24) on its exterior side and the wheel tire (12) on its interior side have at least partially exposed carcass filaments such that there is no air-tight sealing of the contact surface between wheel tire (12) and inner tire (24).
The tire assembly according to at least one of the preceding claims, characterized in that the fabric of the inner tire (24) is connected to two circumferential tire beads (26), in particular is sewn, vulcanized, welded, or adhesively bonded.
The tire assembly according to at least one of the preceding claims, characterized in that the inner tire (24) includes a ply of canvas fabric and two tire beads (26), wherein edges of the fabric are folded towards the interior space of the inner tire or outwards around the tire beads (26).
The tire assembly according to at least one of the preceding claims, characterized in that the through hole (48) of the inner tire (24) is arranged in a region (54, 55) wherein at least two fabric plies of the inner tire (24) overlap.
The tire assembly according to at least one of the preceding claims, characterized in that means for sealing between valve and rim (22) and for sealing of spoke holes in the rim (22) are provided.
A bicycle rim for a tire assembly according to at least one of the preceding claims, characterized in that two valve holes are provided.
Dependencies are inferred from the claim text.