Bicycle spoke rim wheel for tubeless tire

Details Bicycle spoke rim wheel for tubeless tire Bicycle spoke rim wheel for tubeless tire

1999-04-30

2000-12-05

Morano, S. Joseph

Land vehicles: wheels and axles

Wheel

Rim

1523816, 152427, B60B 2100, B60B 2102

Patent

active

061556513

ABSTRACT:
A bicycle spoke rim wheel for a WO type tubeless tire is disclosed having a rim construction which can secure an airtightness, reduce a weight of the wheel, and easily fit a tire. Particularly, a seal material within a recess can be reduced in weight, and mounting of a tire bead on the rim is facilitated by placing the tire bead into the recess. This provides an arrangement, wherein a rim (1) is provided with a diaphragm (5) on a rim outer side (3), a nipple hole (20) of the diaphragm (5) is airtightened by a seal material (24) in the form of a metal tape and, when air is filled into a tubeless tire (37), a soft foam (25) is further bonded to the upper surface of the seal material (24) so that a tire bead portion (38) is readily placed on a bead-seating portion (11), whereby even a thin tire bead portion (38) can be easily sealed, as a result of which the shape of the bead-seating portion from a rim ear portion (7) to a hump portion (12) is curved to enlarge a sealing area, a valve (29) is pressed against the diaphragm (5) through a packing (34) and airtightened, a spoke mounting-hole (23) is bored in thick-wall portion of the rim body surface (18), and a spoke end (28) and a nipple head (26) are received in a hollow portion (8).

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