A stationary screw induction system for improving performance of a watercraft has a cylindrical housing with a first closed end and a second open end. A housing inlet opening is disposed within the housing between the first and second ends. Disposed within the inside of the cylindrical housing is...http://www.google.de/patents/US5679037?utm_source=gb-gplus-sharePatent US5679037 - Stationary screw induction system
