Patent US3903992A successfully refreshed from Google Patents.
US3903992A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for regreasing bearings
Assignee: Rexnord Industries LLC
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Filing: 1974-02-21
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Granted: 1975-09-09
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Expires: 1994-02-21
Abstract
Abstract A device and method for regreasing a rotary bearing are disclosed in which the bearing is mounted in a bearing housing having a grease injection opening formed adjacent one side of the bearing and at least one discharge opening formed therein adjacent the other side of the bearing. A grease slinger plate is mounted on the rotary shaft supported by the bearing and is located adjacent said other side of the bearing for rotary movement with the shaft. The plate has at least one canted vane formed thereon at its periphery for urging grease from the bearing to and through the discharge opening. When regreasing the bearing, all openings in the housing are opened and grease is injected through the injection opening while the shaft is rotating so that new grease is urged by the vane through the bearing, while it simultaneously urges old grease out of the discharge opening.
Inventors
- 👤 Krishna Chivukula
- 👤 Wilfred J Lee
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:44
CPC Classifications
F; F16; F16N; F16N7/00; F16N7/36; F01; F01M; F01M9/00; F16C; F16C33/00; F16C33/30; F16C33/66; F16C33/6603; F16C33/6622; F16C35/00; F16C35/04
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
210 words
A device for use in regreasing a bearing for a rotary shaft including a bearing, a shaft extending through said bearing, a bearing housing surrounding the beariNg and a portion of said shaft, said housing having first and second grease chambers therein respectively located on opposite sides of the bearing, a grease injection opening formed therein providing communication between said first chamber and the exterior of said housing through which fresh grease is selectively injected into said housing and said first chamber, and at least one grease discharge opening formed therein providing communication between said second chamber and the exterior of said housing whereby grease injected under pressure into said first chamber is forced through said bearing into said second chamber and expels old grease in the housing through said discharge opening, and a grease discharge plate mounted on said shaft in said second chamber adjacent said bearing for rotary movement with said shaft, said grease discharge plate having at least one canted vane formed thereon at its periphery for forcing grease in said housing adjacent said bearing through said discharge opening during rotation of the shaft and for assisting the movement of grease in said first chamber through said bearing into said second chamber and out said discharge opening.
Claim 2
Independent Claim
210 words
A device for use in regreasing a bearing for a rotary shaft including a bearing, a shaft extending through said bearing, a bearing housing surrounding the beariNg and a portion of said shaft, said housing having first and second grease chambers therein respectively located on opposite sides of the bearing, a grease injection opening formed therein providing communication between said first chamber and the exterior of said housing through which fresh grease is selectively injected into said housing and said first chamber, and at least one grease discharge opening formed therein providing communication between said second chamber and the exterior of said housing whereby grease injected under pressure into said first chamber is forced through said bearing into said second chamber and expels old grease in the housing through said discharge opening, and a grease discharge plate mounted on said shaft in said second chamber adjacent said bearing for rotary movement with said shaft, said grease discharge plate having at least one canted vane formed thereon at its periphery for forcing grease in said housing adjacent said bearing through said discharge opening during rotation of the shaft and for assisting the movement of grease in said first chamber through said bearing into said second chamber and out said discharge opening.
Claim 3
Dependent Claim
34 words
The device as defined in claim 1 wherein said plate is an annular member having a central opening receiving said shaft and a pair of diametrically opposed canted vanes formed on the periphery thereof.
Claim 4
Dependent Claim
31 words
The device as claimed in claim 2 wherein said housing has a plurality of grease discharge openings formed therein providing communication between said second chamber and the exterior of said housing.
Claim 5
Dependent Claim
25 words
The device as defined in claim 3 wherein said housing includes a removable bearing cap and said grease discharge openings are formed in said cap.
Claim 6
Independent Claim
195 words
A device for use in regreasing a bearing for a rotary shaft including, a bearing, a shaft extending through said bearing, a housing for said bearing, said housing having first and second grease chambers therein respectively located on opposite sides of said bearing, a selectively openable grease injection opening providing communication between said first chamber and the exterior of said housing through which fresh grease is selectively injected into said housing and said first chamber, and at least one selectively openable grease discharge opening providing communication between said second chamber and the exterior of said housing whereby grease injected under pressure into said first chamber is forced through said bearing into said second chamber and expels old grease in the housing through said discharge opening, and a grease discharge plate mounted on said shaft in said second chamber for rotary movement with said shaft, said plate having a pair of diametrically opposed canted vanes formed thereon at its periphery for forcing grease in said housing adjacent said bearing through said discharge opening and for assisting the movement of grease in said first chamber through said bearing into said second chamber and out said discharge opening.
Claim 7
Independent Claim
195 words
A device for use in regreasing a bearing for a rotary shaft including, a bearing, a shaft extending through said bearing, a housing for said bearing, said housing having first and second grease chambers therein respectively located on opposite sides of said bearing, a selectively openable grease injection opening providing communication between said first chamber and the exterior of said housing through which fresh grease is selectively injected into said housing and said first chamber, and at least one selectively openable grease discharge opening providing communication between said second chamber and the exterior of said housing whereby grease injected under pressure into said first chamber is forced through said bearing into said second chamber and expels old grease in the housing through said discharge opening, and a grease discharge plate mounted on said shaft in said second chamber for rotary movement with said shaft, said plate having a pair of diametrically opposed canted vanes formed thereon at its periphery for forcing grease in said housing adjacent said bearing through said discharge opening and for assisting the movement of grease in said first chamber through said bearing into said second chamber and out said discharge opening.
Claim 8
Dependent Claim
62 words
The device as defined in claim 5 wherein said vanes have leading and trailing edge portions with respect to the direction of rotation of said shaft, said leading edge portions of said vanes being closer to said bearing than said trailing edge portions thereby to urge grease adjacent to said bearing to positions away from the bearing during rotation of said shaft.
Claim 9
Dependent Claim
29 words
The device as defined in claim 6 wherein said housing includes a removable cap defining a portion of said second chamber and having said grease discharge port formed therein.
Claim 10
Dependent Claim
15 words
The device as defined in claim 7 wherein said openings are closed by removable plugs.
References Cited (Backward Citations)
US2959457A
Cited
US3042462A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-09-08 | 1979-03-10 | 1979-09-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-09-08 | 1983-03-10 | 1983-09-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-09-08 | 1987-03-10 | 1987-09-09 | $7700.00 | Window Closed / Lapsed |