US 12,391,074 B2
Pneumatic tire for bicycle
Daniel Lengemann, Korbach (DE); and Waldemar Drews, Korbach (DE)
Assigned to Continental Reifen Deutschland GmbH, Hannover (DE)
Appl. No. 18/006,702
Filed by Continental Reifen Deutschland GmbH, Hannover (DE)
PCT Filed Jul. 14, 2021, PCT No. PCT/DE2021/200093
§ 371(c)(1), (2) Date Jan. 24, 2023,
PCT Pub. No. WO2022/017567, PCT Pub. Date Jan. 27, 2022.
Claims priority of application No. 20 2020 104 281.5 (DE), filed on Jul. 24, 2020.
Prior Publication US 2023/0264523 A1, Aug. 24, 2023
Int. Cl. B60C 9/18 (2006.01); B60C 15/06 (2006.01)
CPC B60C 15/0628 (2013.01) [B60C 2015/0614 (2013.01); B60C 2015/065 (2013.01); B60C 2200/12 (2013.01)] 5 Claims
OG exemplary drawing
 
1. A tubeless or tubeless-ready pneumatic bicycle tire comprising:
a tread positioned proximate a top portion of the tire;
a tire carcass comprising an outer carcass inlay and an inner carcass inlay, the tire carcass positioned below the tread with the outer carcass inlay being outward of the inner carcass inlay in a zenith region under the tread, and the inner carcass inlay being in direct contact with an interior space of the tubeless or tubeless-ready tire;
tire side wall regions on sides of the tire constructed with side portions of the tire carcass;
two bead regions positioned below respective bases of the tire side wall regions, each of the bead regions with a tire bead and a core;
the inner and outer carcass inlays each have individual reinforcement members running parallel to one another, the reinforcement members of each carcass inlay being arranged to enclose an angle of 40 degrees to 60 degrees with respect to the direction of rotation, and the reinforcement members of the inner and outer carcass inlays having an opposite pitch angle;
the inner and outer carcass inlays each extend from the zenith region through the tire side wall regions to the two bead regions, are looped outwardly around the respective cores, and terminate at respective carcass inlay ends of the inner and outer carcass inlays;
the carcass inlay ends of both the inner and outer carcass inlays terminate in the bead region, with the respective carcass inlay ends of the inner carcass inlay terminating at a height of at most 13 mm as measured relative to an outermost turning point of the reinforcement members of the inner carcass inlay that are looped around the respective cores;
bead protective strips arranged on the carcass to cover the carcass inlay ends of both the inner and outer carcass inlays on both sides of the tire, each of the bead protective strips extending to cover a portion of the respective bead region, with each bead protective strip terminating at its radially outer end at a height of at most 15 mm as measured relative to the outermost turning point of the reinforcement members of the inner carcass inlay that are looped around the respective cores;
the bead protective strips each being formed from a rubberized monofilament fabric that is free of intertwined fibers and microchannels;
wherein the arrangement and structure of the bead protective strips promotes airtightness along with the inner and outer carcass inlays for tubeless or tubeless-ready operation; and
wherein the carcass, in the respective tire sidewall regions between (i) the respective radially outer ends of the bead protective strips and (ii) the tread, has only two carcass inlay plies with reinforcement members, with one of the two carcass inlay plies being only one ply of the inner carcass inlay and the other of the two carcass inlay plies being only one ply of the outer carcass inlay.