US3847248A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Replaceable lubricating cartridge for spline connections
Assignee: Caterpillar Inc
•
Filing: 1973-08-23
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Granted: 1974-11-12
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Expires: 1993-08-23
Abstract
Abstract A gear is mounted on a shaft by a spline connection and a replaceable lubricating cartridge is mounted on an end of the gear to continuously lubricate the spline connection upon rotation of the shaft. The cartridge comprises a cup-shaped housing having partitions secured therein to define a closed first chamber and a second chamber which is open to the spline connection to continuously supply lubricant thereto.
Inventors
- 👤 B Avery
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 17:32
CPC Classifications
F; F16; F16H; F16H57/00; F16H57/0018; F16H57/0025; F16D; F16D1/00; F16D1/10; F16D1/108; F16D1/116; F16D2001/103; F16D2300/00; F16D2300/06
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
117 words
In combination with a mechanism having an annular member attached to a shaft by a spline connection, the improvement comprising a replaceable lubricating cartridge attached at an inboard side therof to an outboard end of said mechanism, said cartridge comprising a housing defining a chamber therein, partition means disposed in said chamber to divide it into a closed first chamber portion and a second chamber portion adapted to be at least partially filled with a liquid lubricant, and means defining an opening through said partition means on an inboard side of said housing exposing said second chamber portion to said spline connection for communicating lubricant adapted to be retained in said second chamber exteriorly of said cartridge.
Claim 2
Dependent Claim
117 words
In combination with a mechanism having an annular member attached to a shaft by a spline connection, the improvement comprising a replaceable lubricating cartridge attached at an inboard side therof to an outboard end of said mechanism, said cartridge comprising a housing defining a chamber therein, partition means disposed in said chamber to divide it into a closed first chamber portion and a second chamber portion adapted to be at least partially filled with a liquid lubricant, and means defining an opening through said partition means on an inboard side of said housing exposing said second chamber portion to said spline connection for communicating lubricant adapted to be retained in said second chamber exteriorly of said cartridge.
Claim 3
Dependent Claim
42 words
The lubricating cartridge of claim 1, wherein said housing comprises an annular outer wall attached to an outboard end of said mechanism in sealing contact therewith and an end wall secured to said outer wall on an outboard side of said housing.
Claim 4
Dependent Claim
29 words
The combination of claim 2 wherein said annular member comprises a gear having an annular bore formed therein, tha annular outer wall of said housing press-fitted into said bore.
Claim 5
Dependent Claim
44 words
The lubricating cartridge of claim 1, wherein said partition means comprise a crescent-shaped member, having an L-shaped cross section, secured to said housing and defining said first chamber portion therein and a crescent-shaped plate secured to said housing, said openIng defined through said plate.
Claim 6
Dependent Claim
21 words
The lubricating cartridge of claim 4 wherein said opening constitutes an elongated slot located at a longitudinal axis of said cartridge.
Claim 7
Dependent Claim
23 words
The lubricating cartridge of claim 1, wherein said first chamber portion has a volume less than the volume of said second chamber portion.
Claim 8
Dependent Claim
25 words
The combination of claim 1, further comprising a disc-shaped chamber defined between an outboard end of said shaft and the inboard side of said cartridge.
References Cited (Backward Citations)
US2877063A
Cited
US3266596A
Cited
US3325088A
Cited
US3469655A
Cited
US3621937A
Cited
US3605947A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-11-11 | 1978-05-13 | 1978-11-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-11 | 1982-05-13 | 1982-11-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-11 | 1986-05-13 | 1986-11-12 | $7700.00 | Window Closed / Lapsed |