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US 7,000,499 B2Granted
Bicycle crank and method for manufacturing said crank
AssigneeCampagnolo S.r.l.
InventorMaurizio Valle
Life of this patent
Estimating the term…
Abstract
Bicycle crank comprising an elongated core with a first and a second end, a first and a second insert arranged on the ends of the core, and a high-resistance fiber coating incorporated in a plastic material matrix forming a casing incorporating the core and the inserts is provided. The core is a rigid element and each insert is equipped with a connecting portion inserted into a respective end of the core to establish a shape coupling therewith.
Claims14
Method of manufacturing a bicycle crank, characterised by comprising the following steps:
- a) forming an elongated rigid core;
- b) matingly engaging a pair of inserts to the opposite ends of said elongated core;
- c) helically wrapping structural fibres incorporated in tapes of plastic material matrix around the elongated core and the inserts to enclose them;
- d) applying a lamination of structural fibres in a plastic material matrix onto the product of step c);
- and
- e) hardening said plastic material matrix of steps c) and d) into a high resistance rigid enclosure.
3 more elements
A bicycle crank, comprising:
- an elongated core having first and second open ends;
- first and second inserts, each arranged at one of the ends of said core, and,
- a tape of structural fibres in a plastic material matrix helically wound around the core and the first and second inserts and a lamination of structural fibres incorporated in a plastic material matrix forming a single structural unit.
Dependencies are inferred from the claim text.