Marine propellers with compression spring sleeve assemblies

A marine propeller for driving engagement by a propeller drive shaft, comprising:

• a propeller hub having an axis of rotation;
• and
• a multi-sectioned compression spring sleeve assembly disposed in the propeller hub, the multi-sectioned compression spring sleeve assembly comprising a plurality of sleeve sections independently drivingly engaged by the propeller drive shaft, the plurality of sleeve sections of the drive sleeve each comprising:
• a drive core comprising:
• a drive core wall:
• at least one drive rib extending from the drive core wall;
• and
• a shaft bore formed by the drive core wall, the shaft bore sized and configured to receive the propeller drive shaft for driving rotational engagement thereby:
• a drive sleeve drivingly engaged for rotation by the drive core and drivingly engaging the propeller hub for rotation, the drive sleeve having a drive sleeve body with a fore sleeve end and an aft sleeve end;
• and
• at least one axial deformation element having at least one dually open-ended deformation passageway in the drive sleeve body of the drive sleeve, the deformation passageway having a fore passageway end at the fore sleeve end and an aft passageway end at the aft sleeve end of the drive sleeve, the at least one axial deformation element oriented parallel to the axis of rotation of the propeller hub and the deformation passageway fully encased by the drive sleeve body throughout a cross-section of the drive sleeve taken perpendicular to the axis of rotation of the propeller hub.

A marine propeller for driving engagement by a propeller drive shaft, comprising:

• a propeller hub having an axis of rotation and a forward rotational direction and a rearward rotational direction about the axis of rotation;
• and
• a compression spring sleeve assembly disposed in the propeller hub, the compression spring sleeve assembly comprising:
• a drive core comprising:
• a drive core wall;
• at least one drive rib extending from the drive core wall:
• at least one sacrificial rib extending from the drive core wall of the drive core, the at least one sacrificial rib configured to fracture or break at the drive core wall more readily than the at least one drive rib responsive to pressure applied to the at least one sacrificial rib;
• a shaft bore formed by the drive core wall, the shaft bore sized and configured to receive the propeller drive shaft for driving rotational engagement thereby:
• a drive sleeve drivingly engaged for rotation by the drive core and drivingly engaging the propeller hub for rotation, the drive sleeve having a drive sleeve body with a fore sleeve end and an aft sleeve end and a plurality of rib slots in the drive sleeve body, the at least one drive rib and the at least one sacrificial rib engaging the plurality of rib slots, respectively;
• and
• at least one axial deformation element having at least one dually open-ended deformation passageway in the drive sleeve body of the drive sleeve, the deformation passageway having a fore passageway end at the fore sleeve end and an aft passageway end at the aft sleeve end of the drive sleeve, the at least one axial deformation element oriented parallel to the axis of rotation of the propeller bub and the deformation passageway fully encased by the drive sleeve body throughout a cross-section of the drive sleeve taken perpendicular to the axis of rotation of the propeller hub.

A marine propeller for driving engagement by a propeller drive shaft, comprising:

• a propeller hub having an axis of rotation;
• and
• a compression spring sleeve assembly disposed in the propeller hub, the compression spring sleeve assembly comprising:
• a drive core comprising:
• a drive core wall:
• at least one drive rib extending from the drive core wall;
• a shaft bore formed by the drive core wall, the shaft bore sized and configured to receive the propeller drive shaft for driving rotational engagement thereby;
• and
• at least one rib shear channel in the at least one drive rib;
• a drive sleeve drivingly engaged for rotation by the drive core and drivingly engaging the propeller hub for rotation, the drive sleeve having a drive sleeve body with a fore sleeve end and an aft sleeve end;
• and
• at least one axial deformation element having at least one dually open-ended deformation passageway in the drive sleeve body of the drive sleeve, the deformation passageway having a fore passageway end at the fore sleeve end and an aft passageway end at the aft sleeve end of the drive sleeve, the at least one axial deformation element oriented parallel to the axis of rotation of the propeller hub and the deformation passageway fully encased by the drive sleeve body throughout a cross-section of the drive sleeve taken perpendicular to the axis of rotation of the propeller hub.

A marine propeller for driving engagement by a propeller drive shaft, comprising:

• a propeller hub having an axis of rotation;
• and
• a compression spring sleeve assembly disposed in the propeller hub, the compression spring sleeve assembly comprising:
• a drive adaptor sized and configured to receive the propeller drive shaft for driving rotational engagement thereby;
• a drive core comprising:
• a drive core wall;
• at least one drive rib extending from the drive core wall;
• and
• a shaft bore formed by the drive core wall, the shaft bore sized and configured to receive the drive adaptor for driving rotational engagement thereby:
• a drive sleeve drivingly engaged for rotation by the drive core and drivingly engaging the propeller hub for rotation, the drive sleeve having a drive sleeve body with a fore sleeve end and an aft sleeve end;
• and
• at least one axial deformation element having at least one dually open-ended deformation passageway in the drive sleeve body of the drive sleeve, the deformation passageway having a fore passageway end at the fore sleeve end and an aft passageway end at the aft sleeve end of the drive sleeve, the at least one axial deformation element oriented parallel to the axis of rotation of the propeller hub and the deformation passageway fully encased by the drive sleeve body throughout a cross-section of the drive sleeve taken perpendicular to the axis of rotation of the propeller hub.