Hollow shell fiber reinforced resin impregnated bicycle wheel construction and method therefor
CA 2000652 A1 · Owner: Lewis, Ralph H. · Inventors: Lewis, Ralph H.
Overview
Its claims, description and drawings are in the Canadian Patents Database.
Open the CIPO recordAbstract From the Canadian patent
A bicycle wheel is disclosed having no more than five airfoil shaped spokes linking a central hub to a peripheral rim in a blown and hollow fiber reinforced construction with resulting improvements of wheel spoke windage overall wheel, weight and rim inertia. A heated two-part hollow mold is utilized to form and cure the bicycle wheel the parts of the, mold coming together to form a hollow concavity having an interior dimension complementary to the finished exterior dimension of the finely fabricated bicycle wheel. The bicycle wheel includes a central hub and preferably three or four radially extending spokes. The radially extending spokes all have airfoil shapes, the leading and trailing …
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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.
Why it's free to use
- Filed October 13, 1989. No grant is recorded for it in Canada; had it been granted, its 20-year term would have ended October 13, 2009.
- A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by October 13, 2011.
- We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
Timeline
Timeline From CIPO dates
Sources & verification
Official CIPO records
Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.