Spoked wheel
AssigneeSalomon S.A.
InventorsJean-Pierre Mercat, Olivier Mouzin
Life of this patent
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Abstract
The invention relates to a spoked wheel that includes a peripheral rim, a central hub, and individual connecting spokes between the rim and the hub, the spokes being taut. The wheel includes an arrangement for adjusting the tension of at least some of the spokes, and the spokes are taut with an initial tension Ti corresponding to a normal tension value Tn which is reduced by a value corresponding to a compression force R that can be supported by each spoke. For a rear wheel, the spokes supporting the compression forces are those arranged on the side opposite freewheel.
Claims33
A spoked wheel comprising:
- a peripheral rim;
- a central hub;
- spokes extending between the rim and the hub, the spokes being under tension in an absence of an external load;
- each of at least a plurality of the spokes having a structure providing a compression buckling strength to withstand buckling up to a predetermined compression force (R);
- a tension-adjusting arrangement structured and arranged to adjust the tension of at least the plurality of spokes, the tension of the plurality of spokes being set at an initial tension force (Ti);
- said initial tension force (Ti) comprising a normal tension force (Tn) reduced by said compression force (R), said normal tension force (Tn) being a tension whereby, when the wheel is subjected to an external radial load of a predetermined amount, a variation in tension of the plurality of spokes, during a revolution of the plurality of spokes around the hub, has a minimum tension force of zero.
A rolling apparatus comprising:
- a frame;
- a transmission system;
- and
- two wheels, at least one of the two wheels comprising:
- a peripheral rim;
- a central hub;
- spokes extending between the rim and the hub, the spokes being under tension in an absence of an external load;
- each of at least a plurality of the spokes having a structure providing a compression buckling strength to withstand buckling up to a predetermined compression force (R);
- a tension-adjusting arrangement structured and arranged to adjust the tension of at least the plurality of spokes, the tension of the plurality of spokes being set at an initial tension force (Ti);
- said initial tension force (Ti) comprising a normal tension force (Tn) reduced by said compression force (R), said normal tension force (Tn) being a tension whereby, when the at least one of the two wheels is subjected to an external radial load of a predetermined amount, a variation in tension of the plurality of spokes, during a revolution of the plurality of spokes around the hub, has a minimum tension force of zero.
Dependencies are inferred from the claim text.