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An adjustable sealing device for sealing between rotatable drive shaft, such as a propeller drive shaft, and the aperture in a structure, such as the hull or bulkhead of a vessel, through which the shaft passes. The device is generally rigid and is comprised of an adapter ring, a slide ring, a diaph

An adjustable sealing device for sealing between rotatable drive shaft, such as a propeller drive shaft, and the aperture in a structure, such as the hull or bulkhead of a vessel, through which the shaft passes. The device is generally rigid and is comprised of an adapter ring, a slide ring, a diaphragm positioned between the adapter ring and the slide ring, a friction ring having one end positioned in the adapter ring and a seal surface engageable with the seal surface of a seal ring rotatable with the shaft, biasing means positioned between the slide ring and the friction ring for urging the seal surfaces together, and a spring cover acting as a seal redundant to the diaphragm.

대표청구항 ▼

A shaft seal device for use with a drive shaft extending through an opening in the hull or bulkhead of a vessel to preclude the flow of fluid into the vessel and out of the confines of said device, the shaft being rotatable about a generally linear axis and having a seal ring mounted on the shaft fo

A shaft seal device for use with a drive shaft extending through an opening in the hull or bulkhead of a vessel to preclude the flow of fluid into the vessel and out of the confines of said device, the shaft being rotatable about a generally linear axis and having a seal ring mounted on the shaft for rotation with the shaft, said seal ring having a seal ring seal surface, said device having a passageway with a central, longitudinal axis for receiving the shaft for rotation and comprising: adapter means including a part of said passageway, said adapter means having an aft end portion fixable to a connector for attaching said shaft seal device to the hull or bulkhead of a vessel through which the shaft extends; slide ring means having part of said passageway and connected to said adapter means, said slide ring means being stationary in the axial direction with respect to said adapter means; diaphragm means having first and second portions, said first portion being disposed between and forming a watertight seal between said adapter means and said slide ring means; friction ring means having part of said passageway, said friction ring means having one portion operatively connected with said second portion of said diaphragm means in a watertight seal, and having a second portion having a friction ring seal surface around the longitudinal axis of said passageway and positioned and configured to engage the seal ring seal surface to create a generally watertight seal, and biasing means cooperating with said slide ring means for aligning said friction ring means with the drive shaft, and urging said friction ring means and said friction ring seal surface towards said seal ring means and said seal ring seal surface to maintain a generally watertight seal despite fore and aft movement of the shaft and despite the transverse movement of said shaft relative to the longitudinal axis of said passageway.