(under subclass 111) Device wherein a means is provided which allows the propeller shaft to pierce the hull, which means separates the engine compartment from the water to prevent the influx of the water and which means usually includes bearings.
SEE OR SEARCH CLASS
277, Seal for a Joint or Juncture, for a generic sealing means or process,
500+, for a dynamic, circumferential, contact seal for other than a piston.
384, Bearings,
130+, for a bearing with a seal.
416, Fluid Reaction Surfaces (i.e., Impellers), 174, for lubricating, sealing, packing, or specific bearing means between impeller or shaft and static part.
