A bottle cap opener for opening twistable type caps. The opener may include a housing to apply a twisting force to the caps. Twisting force may also be applied via a handle. The opener also may include cap grabbers movable within the housing. The progressively narrowing interior shape of the housing...http://www.google.fr/patents/US7134362?utm_source=gb-gplus-shareBrevet US7134362 - Bottle cap opener
