Kite · Bow e sicurezza

2005

Il bow kite porta il depower

Arriva sul mercato un kite piatto con briglie, progettato dai fratelli Legaignoux, con molto più depower e una gamma di vento molto più ampia dei C-kite che lo avevano preceduto.

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US 7,374,133, Fig. 8 (2008), la concessione statunitense del brevetto Legaignoux sul bow kite · pubblico dominio

Vent’anni dopo il loro primo brevetto, Bruno e Dominique Legaignoux cambiarono di nuovo il kite. Il 1° marzo 2004 depositarono un brevetto francese per un kite da trazione dalla forma più piatta e con il bordo d’uscita concavo, tenuto in forma da briglie. Fu pubblicato nel settembre 2005.

Lo stesso anno il progetto arrivò in spiaggia. Cabrinha fu la prima a costruirne uno, il Crossbow, pilotato con una barra a carrucole. Takoon, il marchio dello stesso Bruno Legaignoux, realizzò il Nova, che una rivista definisce il primo bow kite prodotto in serie.

La differenza era il depower: una rivista parla di molto più depower di prima e di una stabilità senza pari. I bow kite hanno una gamma di vento più ampia dei C-kite, tanto che due di loro, da 7 e 12 metri quadrati, possono coprire da 10 a 30 nodi per un rider di circa 75 chilogrammi. Il depower rende le raffiche più facili da gestire, e questo li rende più sicuri da usare.

Il progetto fu concesso in licenza a molti produttori di kite. Nel 2006 Ozone presentò il primo gonfiabile piatto con briglie senza carrucole. Il brevetto europeo sul bow kite fu in seguito revocato.