PropellerSafety.com

Archive for invention

Boat Intelligent Warning System Invention

Our Boat Intelligent Warning System (BIWS) invention disclosure below was posted on 29 November 2012. We will make no changes to the text below the line following this paragraph except to correct misspellings, punctuation, and to update html/computer codes and links. Any updates to the invention will be posted below the invention disclosure. Boat Intelligent […]

Contrapel Water Jet

Two New Zealand inventors (Barry Davies and Paul Paterson) have spent nearly twenty years developing a contra-rotating water jet. Like contra-rotating propellers, the Contrapel waterjet uses two impellers turning in opposite directions. The original efforts were by a firm called ContraJet Ltd. After that effort stalled, it became PropellerJet Ltd. The water jet research and […]

MagBlade MaxThrust & SlipStream Propellers Brings Safety to Boat Propellers

Recreational Boating Safety (RBS) of South Africa recently announced the new MagBlade boat propellers (MaxThrust & SlipStream) that will fit all outboard and stern drives. Recreational Boating Safety claims the new MagBlade boat propeller is much safer AND provides better performance and maneuverabilty while reducing drag, ventilation, cavitation, and fuel consumption. Recreational Boat Safety (RBS) […]