B - Operations – Transporting – 60 – B
Patent
B - Operations, Transporting
60
B
301/98
B60B 21/10 (2006.01)
Patent
CA 1081282
ABSTRACT OF THE DISCLOSURE A one-piece wheel rim for a tubeless pneumatic tyre is disclosed herein. The radially outer profile of the wheel rim, considered in a plane containing the axis of the wheel rotation, comprises in sequence from one edge of the wheel profile: a radially extending bead retaining flange having a radially outer edge which is turned axially outwardly; a curved seating portion for the heel of a tyre bead; a substantially straight main bead seating portion which tapers radially in- wardly towards the axially inner regions of the wheel rim; an open bead toe locating groove immediately adjacent to said bead seating portion formed by, again in sequence:- a radially inwardly curving axially outer groove edge portion having a radius in the range of 5mm to 8mm; an outwardly concave groove base portion having a radius in the range of 3mm to 5mm; and a radially inwardly curving axially inner groove edge portion having a radius in the range of 5mm to 8mm; a substantially straight flat ledge portion; a central tyre-fitting well por- tion having a diameter substantially smaller than the main bead seating portion and arranged to allow tyre fitting over the tyre retaining flange; a second open bead toe locating groove formed by, again in sequence:- a radially inwardly curving axially inner groove edge portion having a radius in the range of 5mm to 8mm; an outwardly concave groove base portion having a radius in the range of 3mm to 5mm; and a radially inwardly curving axially outer groove edge portion having a radius in the range of 5mm to 8mm; a substantially straight main bead seating portion which tapers radially inwardly towards the axially inner regions of the wheel rim; and a radially extending bead retaining flange having a radially outer edge which is turned axially outwardly.
338994
French Tom
Holmes Thomas
Kenney Michael J.
Mitchell William E.
LandOfFree
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