Patent US4881829A successfully refreshed from Google Patents.
US4881829A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Submersible bearing assembly
Assignee: Individual
•
Filing: 1987-07-15
•
Granted: 1989-11-21
•
Expires: 2007-07-15
Abstract
Abstract A submersible bearing assembly for a shaft includes a stationary housing that is horizontally split and a roller bearing mounted within the housing and which is also horizontally split. One end of the housing is closed and the other is open. A labyrinth seal seals the open end of the housing and has internal O-rings engaged with and sealing against the shaft. A seal chamber is mounted about the shaft adjacent the open end. The chamber includes a cartridge seal ring that is bolted to the housing about the open end, a shaft seal ring that is axially spaced from the cartridge ring and mounted upon and sealed to the shaft, and a chamber seal surrounding the shaft in the space between the cartridge seal ring and shaft seal ring and which seals against both rings. The chamber seal is formed of a pair of halves each including a rigid portion with a flat radial surface in contact with the like surface of the other half and a flexible portion that seals with a respective ring and urges the rigid portions into contact. A lubricating fluid is disposed in the seal chamber and means are provided for circulating the lubricating fluid through the chamber and for allowing visual inspection of the circulated fluid.
Inventors
- 👤 Lester M. Koelsch
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 14:19
CPC Classifications
F; F16; F16C; F16C33/00; F16C33/30; F16C33/66; F16C33/6603; F16C33/6622; F16C23/00; F16C23/06; F16C23/08; F16C23/082; F16C23/084; F16C33/72; F16C33/76; F16C33/80; F16C35/00; F16C35/04; F16C35/042; F16C35/047; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/3436; F16J15/344; F16J15/40; F16C19/00; F16C19/22; F16C19/24; F16C19/26; Y; Y10; Y10S; Y10S277/00; Y10S277/91
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
177 words
A submersible shaft bearing assembly comprising: a stationary housing defining a bearing chamber with an opening at one end; a bearing mounted within the chamber in the housing; a housing seal sealing the open end of the housing, the housing seal being adapted to be mounted on and to rotate with a shaft; a seal chamber outside the housing and in communication with one side of the housing seal, said seal chamber including a cartridge seal ring attached to the housing at the open end and about the housing seal, a shaft seal ring spaced from the cartridge seal ring and adapted to be mounted on and to rotate and seal with the shaft, and a chamber seal disposed about and spaced from the shaft, said chamber seal sealing with both the stationary cartridge seal ring and the rotatable shaft seal ring; a low viscosity lubricating fluid in the seal chamber; and means for pumping the lubricating fluid into and out of said seal chamber and for visually inspecting the fluid for contamination as it is pumped.
Claim 2
Dependent Claim
177 words
A submersible shaft bearing assembly comprising: a stationary housing defining a bearing chamber with an opening at one end; a bearing mounted within the chamber in the housing; a housing seal sealing the open end of the housing, the housing seal being adapted to be mounted on and to rotate with a shaft; a seal chamber outside the housing and in communication with one side of the housing seal, said seal chamber including a cartridge seal ring attached to the housing at the open end and about the housing seal, a shaft seal ring spaced from the cartridge seal ring and adapted to be mounted on and to rotate and seal with the shaft, and a chamber seal disposed about and spaced from the shaft, said chamber seal sealing with both the stationary cartridge seal ring and the rotatable shaft seal ring; a low viscosity lubricating fluid in the seal chamber; and means for pumping the lubricating fluid into and out of said seal chamber and for visually inspecting the fluid for contamination as it is pumped.
Claim 3
Dependent Claim
16 words
A bearing assembly in accordance with claim 1 wherein said housing seal is a labyrinth seal.
Claim 4
Dependent Claim
27 words
A bearing assembly in accordance with claim 2 wherein said labyrinth seal includes an O-ring at its inner surface adapted to be in contact with the shaft.
Claim 5
Dependent Claim
28 words
A bearing assembly in accordance with claim 1 wherein said shaft seal ring includes an O-ring at its inner surface adapted to be in contact with the shaft.
Claim 6
Dependent Claim
53 words
A bearing assembly in accordance with claim 1 wherein said chamber seal includes a pair of seal halves each including a rigid portion having a flat radial surface in contact with the surface of the other half, and a flexible portion that seals with a respective ring and urges the rigid portions together.
Claim 7
Dependent Claim
121 words
A pillow block bearing assembly for a shaft, comprising: a stationary housing open at one end; a roller bearing mounted in said housing; a housing seal sealing the open end of the housing and adapted for mounting on said shaft to rotate therewith; a seal chamber outside the housing and in communication with the housing seal, the seal chamber including a cartridge seal ring attached to the housing, a shaft seal ring sealed to the shaft for rotation therewith, and a chamber seal spaced from the shaft between the rings and sealing with the rings; a lubricant filling the seal chamber; and means for pumping the lubricant into and out of said seal chamber and for inspecting the lubricant for contamination.
Claim 8
Dependent Claim
121 words
A pillow block bearing assembly for a shaft, comprising: a stationary housing open at one end; a roller bearing mounted in said housing; a housing seal sealing the open end of the housing and adapted for mounting on said shaft to rotate therewith; a seal chamber outside the housing and in communication with the housing seal, the seal chamber including a cartridge seal ring attached to the housing, a shaft seal ring sealed to the shaft for rotation therewith, and a chamber seal spaced from the shaft between the rings and sealing with the rings; a lubricant filling the seal chamber; and means for pumping the lubricant into and out of said seal chamber and for inspecting the lubricant for contamination.
Claim 9
Dependent Claim
16 words
A bearing assembly in accordance with claim 6 wherein said housing seal comprises a labyrinth seal.
Claim 10
Dependent Claim
27 words
A bearing assembly in accordance with claim 7 wherein said labyrinth seal includes an O-ring at its inner surface adapted to be in contact with the shaft.
Claim 11
Dependent Claim
31 words
A bearing assembly in accordance with claim 6 wherein the seal ring attached to the shaft has an O-ring at its inner surface adapted to be in contact with the shaft.
Claim 12
Dependent Claim
53 words
A bearing assembly in accordance with claim 6 wherein said chamber seal includes a pair of seal halves each including a rigid portion having a flat radial surface in contact with the surface of the other half, and a flexible portion that seals with a respective ring and urges the rigid portions together.
Claim 13
Dependent Claim
29 words
A bearing assembly in accordance with claim 12 wherein each of said rings includes an annular dished portion that receives a flexible portion of a respective chamber seal half.
References Cited (Backward Citations)
US132395A
Cited
US3127181A
Cited
US961419A
Cited
US1340310A
Cited
US1481705A
Cited
US1676894A
Cited
US1747867A
Cited
US2033156A
Cited
US2016832A
Cited
GB482873A
Cited
US2230989A
Cited
US2281905A
Cited
US2249501A
Cited
US2510549A
Cited
US2853020A
Cited
DE1101071B
Cited
US3241843A
Cited
US3447843A
Cited
US3588124A
Cited
US3578111A
Cited
US3625309A
Cited
US3921962A
Cited
US3971565A
Cited
US4111436A
Cited
US4348067A
Cited
US4575265A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1992-11-20 | 1993-05-22 | 1993-11-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-11-20 | 1997-05-22 | 1997-11-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-11-20 | 2001-05-22 | 2001-11-21 | $7700.00 | Window Closed / Lapsed |