Abstract

A self-adjusting variable pitch propeller included a central hub with an axial propeller centre line defining the rotational axis of the propeller. A plurality of blades extend radially from the hub. The hub exhibits a central bore arranged to receive a rotating drive shaft. Each blade is pivotally fixed to the hub and pivotal about a respective blade pivot axis which extends radially from the hub through the respective blade. Each blade exhibits a leading edge, a trailing edge, a pressure side exhibiting a pressure side area and a suction side exhibiting a suction side area. The blades are mechanically interconnected to freely transfer pivotal movement of each blade to all other blades. The pivotal axis of each blade is positioned such that >50% of the suction side area and of the pressure side area is arranged between the trailing edge and the pivotal axis of the respective blade.

IPC Classes  ?

• B63H 3/00 - Propeller-blade pitch changing

Goods & Services

Parts and fittings for water vehicles; parts and fittings for air and space vehicles; screw-propellers.

Goods & Services

(1) Parts and fittings for water vehicles; parts and fittings for air and space vehicles; screw-propellers.

Goods & Services

Screw-propellers for boats; Screw-propellers for airlines and drones

Goods & Services

Parts and fittings for water vehicles; Parts and fittings for air and space vehicles; Screw-propellers.

Abstract

A self-adjusting variable pitch propeller (1) for marine use, comprising a central hub (2) with an axial propeller centre line (C) defining the rotational axis of the propeller and a plurality of blades (50, 50') extending radially from the hub. The hub (2) exhibits a central bore (3) arranged to receive a rotating drive shaft (S). Each blade (50, 50') is pivotally fixed to the hub (2) and pivotal about a respective blade pivot axis (P) which extends radially from the hub (2) through the respective blade (50, 50'). Each blade (50, 50') exhibits a leading edge (51, 51'), a trailing edge (52, 52'), a pressure side (54. 54') exhibiting a pressure side area and a suction side (53, 53') exhibiting a suction side area. The blades (50) are mechanically interconnected to freely transfer pivotal movement of each blade to all other blades. The pivotal axis (P) of each blade (50, 50') is positioned such that > 50% of the suction side (53, 53') area and of the pressure side (54, 54') area is arranged between the trailing edge (52, 52') and the pivotal axis (P) of the respective blade (50, 50').

IPC Classes  ?

• B63H 3/00 - Propeller-blade pitch changing
• B63H 20/24 - Exhaust gas outlets

Abstract

A self-adjusting variable pitch propeller (1) for marine use, comprising a central hub (2) with an axial propeller centre line (C) defining the rotational axis of the propeller and a plurality of blades (50, 50') extending radially from the hub. The hub (2) exhibits a central bore (3) arranged to receive a rotating drive shaft (S). Each blade (50, 50') is pivotally fixed to the hub (2) and pivotal about a respective blade pivot axis (P) which extends radially from the hub (2) through the respective blade (50, 50'). Each blade (50, 50') exhibits a leading edge (51, 51'), a trailing edge (52, 52'), a pressure side (54. 54') exhibiting a pressure side area and a suction side (53, 53') exhibiting a suction side area. The blades (50) are mechanically interconnected to freely transfer pivotal movement of each blade to all other blades. The pivotal axis (P) of each blade (50, 50') is positioned such that > 50% of the suction side (53, 53') area and of the pressure side (54, 54') area is arranged between the trailing edge (52, 52') and the pivotal axis (P) of the respective blade (50, 50').

IPC Classes  ?

• B63H 3/00 - Propeller-blade pitch changing
• B63H 20/24 - Exhaust gas outlets