Bicycle rim and wheel
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Oct 29, 1991
Grant Date -
N/A
app pub date -
Oct 20, 1989
filing date -
Oct 20, 1989
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An improved bicycle rim and wheel having good aerodynamic properties and good crosswind stability is provided. In one embodiment, a toroidal rim is utilized to reduce the drag component normally associated with a conventional spoked wheel. The toroidal rim has a streamlined inner rim surface and a tire mounting surface. In other embodiments, drag reducing spoke systems are used in conjunction with a toroidal rim to lower wheel drag. In the preferred embodiments, the toroidal rim and wheel attached thereto form a transverse cross section which is substantially elliptical and has a high aspect ratio. The maximum rim width can be wider than the tire to achieve good aerodynamic efficiency.
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