Through hull assemblies for marine drives
AssigneeEvolution SA
InventorSamuel H. Tibbetts
Life of this patent
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Abstract
A through hull assembly to be incorporated in a marine drive has a housing secured to the hull. The housing consists of a rearward tubular section and a forward section. The tubular section is of a length to extend through the hull and is connected and sealed thereto in a manner preventing leakage through the passageway through which the tubular section extends. A shaft extends through both housing sections and is sealed to opposite ends thereof and is supported by bearings in each section with the ends of the shaft exposed. The bearings in the forward section are accommodative of forward and rearward thrusts. A lubricant reservoir maintains the housing full with the lubricant level in the reservoir giving information if there is any housing leakage.
Claims6
A through hull assembly to be incorporated in a marine drive, the assembly including an elongated open ended housing having inboard and outboard end portions, the housing extending outwardly through a passageway in the hull with the outboard end portion submerged below the water line of the hull, means connecting the housing to the hull in a manner sealing the passageway, inboard means connecting the housing to the hull to prevent the turning of the housing, a propeller shaft freely fit within the housing and of a length to extend through the housing with the shaft ends extending beyond the ends of the housing, a propeller fixed on the end of the shaft protruding from the outboard end portion, shaft bearings within the inboard and outboard end portions of the housing and spaced from the open ends thereof to provide end recesses, shaft sealing means in each end recess, the housing provided with a port for the entrance of bearing lubricant, the volumetric capacity of the housing being such that the bearings are immersed in the lubricant with the sealing means preventing the escape of the lubricant from either end of the housing, the bearings and sealing means in each end portion removable through the open end thereof.
Dependencies are inferred from the claim text.