초록 ▼

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 ▼

[ What is claimed is:] [3.] A fluid sealing device for a propeller drive shaft extending through an opening in the hull of a vessel, the shaft having a generally linear axis and having seal ring means with a seal ring seal surface, the seal ring means being mounted to the shaft for rotation with the

[ What is claimed is:] [3.] A fluid sealing device for a propeller drive shaft extending through an opening in the hull of a vessel, the shaft having a generally linear axis and having seal ring means with a seal ring seal surface, the seal ring means being mounted to the shaft for rotation with the shaft, said device having a shaft-receiving passageway and comprising:adapter ring means having an aft end for connection to different types of adapters extending through the opening in the hull;friction ring means having a friction ring seal surface for engaging the seal surface to create a watertight seal;biasing means for exerting a biasing force on said friction ring means to provide for the engagement of said friction ring seal surface and the seal ring seal surface;resilient means for preventing the flow of water along the shaft, said resilient means extending or retracting with the fore and aft movement of the shaft and said friction ring means;slide ring means attached to said resilient means for preventing the movement of said resilient means along the axis of the shaft, said slide ring means being independent of said friction ring means and movable relative to said friction ring means; andsupport means for supporting said biasing means between said slide ring means and said friction ring means;said friction ring means being movable relative to said slide ring means and to said support means, in response to movement of the shaft, while said friction ring means is biased by said biasing means to maintain the engagement of said friction ring seal surface and the seal ring seal surface.