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US 6,182,528 B2Granted
Multilayer handlebar
AssigneeRenthal Limited
InventorAndrew Charles Renshaw
Life of this patent
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AssigneeRenthal Limited
InventorAndrew Charles Renshaw
Estimating the term…
A handlebar for a motorcycle or similar vehicle comprises at least one outer tubular sleeve surrounding an inner tubular member which is of constant diameter and constant wall thickness throughout. Both the outer sleeve and the inner member have a central region, flanked by symmetrical oblique regions, leading to respective handgrip regions. The multi-layer construction of the handlebar limits crack propagation and allows use of two or more different materials. With a two-layer construction, the outer tubular sleeve is preferably of constant wall thickness in its central region and of constant, yet smaller wall thickness in the handgrip regions, with a reduction in wall thickness taking place over a very short distance in the intermediate oblique regions. With a three-layer construction, the outer layers may each be of constant wall thickness, the outermost layer(s) not extending to the ends of the adjacent inner layer.
A unitary handlebar comprising an inner tubular metal member and an outer tubular metal sleeve surrounding the inner tubular member, both the inner tubular member and the outer tubular sleeve having a central region, bends at each end of the central region leading to symmetrical oblique regions, and further bends at the distal ends of the oblique regions leading to respective handgrip regions, the respective handgrip regions of the inner tubular member extending beyond the handgrip regions of the outer tubular sleeve.
A handlebar comprising:
A handlebar comprising:
Dependencies are inferred from the claim text.