PropellerSafety.com

Archive for patent

Brunswick follows our lead, patents active trim cylinder US Patent 9,290,252

In December 2013 we published a report, Approaches to Prevent Outboard Motors From Flipping Into Boats After Striking Floating or Submerged Objects in which we identified several ways to prevent outboard motors from breaking off and flipping into boats after striking submerged objects. One of those was was active trim control (see pages 33-34 of […]

Licensing Propeller Safety Technologies That Are Part of Industry Standards / Regulations: Similar Case Heads to Court

A case currently before U.S. District Court in Seattle may have bearing on the licensing of propeller guards and other propeller safety technologies. In the past, some have said that swim ladder switches such at Keith Jackson / MariTech’s Prop Stopper could not be included in any USCG propeller safety regulation because they are a […]

3PO Navigator Propeller Guard Invented by Guy Taylor Receives U.S. Patent

Guy Taylor received U.S. Patent 8,257,121 for a “Boat Propeller Shield” on September 4, 2012. His 3PO Propeller Shield automatically swings up from his hexagonal shaped Navigator guard when underway to reduce drag. The shield automatically falls down to protect people behind the boat when the boat is at rest or backing up.

Volvo Penta Patents Virtual Propeller Guard System

On June 5, 2012, Volvo Penta was issued U.S. Patent 8,195,381 for a Safety System for Marine Vessels. The patent focuses on detecting people in the water in conjunction with digital anchors. UPDATE note – on September 18, 2012 Volvo Penta was issued another patent, U.S. Patent 8,271,155 for technologies surrounding this same concept. GPS […]