MARINE PROPULSION UNIT

MARINE PROPULSION UNIT

Self-adjusting variable pitch propeller

PROPULSION DEVICE FOR MARINE VESSEL AND OUTBOARD MOTOR

Variable-pitch propeller having optimal hub-to-tip diameter ratio

Hybrid propulsor for watercraft

Hybrid propulsor for watercraft

PROPELLER FOR SAILING BOATS WITH VARIABLE PITCH WITH AUTOMATIC RETURN TO FEATHERED POSITION WITHOUT GEARS

Nautical propeller

Outboard motor

Pulsed locomotor

Oscillating propulsor

Propeller and relative method for fine adjusting the fluid dynamic pitch of the propeller blades

Variable-pitch-propeller drive device and pitch-angle control method, and boat having same

Self-adjustable pitch propeller

Feathering propeller with adjustable abutment

Marine drive system and method

Composite modular self actuating variable pitch marine propeller

Flexible propeller and uses for small vessels

Feathering propeller with blade dampening at forward and backward motion and blades pitch control during backward motion

NAUTICAL VARIABLE-PITCH PROPELLER

Variable-pitch propeller

Wind turbine rotor assembly

Shock absorber for adjustable pitch propeller with feathering blades, particularly for sailers

System and apparatus for improving safety and thrust from a hydro-drive device

Cement-based systems using plastification/extrusion auxiliaries prepared from raw cotton linters

Cement-based systems using water retention agents prepared from raw cotton linters

Gypsum-based mortars using water retention agents prepared from raw cotton linters

Cement-based plasters using water retention agents prepared from raw cotton linters

Tile cement mortars using water retention agents

Joint compounds using thickeners prepared from raw cotton linters

Rotatable lifting surface device having selected pitch distribution and camber profile

Automatic passive variable pitch propeller