US4191279A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Self lubricating one way coupling
Assignee: Dana Inc
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Filing: 1977-12-30
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Granted: 1980-03-04
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Expires: 1997-12-30
Abstract
Abstract An overrunning clutch and hold-back coupling arrangement, preferably using a sprag-type clutch is disclosed. The coupling includes a lubrication arrangement providing for permanent oil lubrication and cooling from an external coolant supply and internal lubricant recirculation by an internal pump. Lubrication flow paths for distributing oil to all critical parts of the coupling and to control the flow of oil are provided.
Inventors
- 👤 Robert J. Brown
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:38
CPC Classifications
F; F16; F16D; F16D13/00; F16D13/58; F16D13/74
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
149 words
A self lubricating coupling comprising: a generally cylindrical uni-directional driving means; a first member fixed against rotation and including a generally cylindrical portion defined on the exterior thereof drivingly engagable with the radially inner portion of said uni-directional driving means; a second member adapted for connection to a rotating machine and including a generally cylindrical portion defined on an interior wall portion thereof drivingly engagable with the radially outer portion of said uni-directional driving means; an annular fluid lubricant sump defined by an interior wall portion of said second member; and fluid circulating means carried by said first member and disposed in said sump, said fluid circulating means including a plurality of generally radially extending spirally formed fluid passageways in facing spaced relation to an interior wall portion of said second member, whereby upon relative motion of said second member with respect to said first member fluid is circulated.
Claim 2
Dependent Claim
149 words
A self lubricating coupling comprising: a generally cylindrical uni-directional driving means; a first member fixed against rotation and including a generally cylindrical portion defined on the exterior thereof drivingly engagable with the radially inner portion of said uni-directional driving means; a second member adapted for connection to a rotating machine and including a generally cylindrical portion defined on an interior wall portion thereof drivingly engagable with the radially outer portion of said uni-directional driving means; an annular fluid lubricant sump defined by an interior wall portion of said second member; and fluid circulating means carried by said first member and disposed in said sump, said fluid circulating means including a plurality of generally radially extending spirally formed fluid passageways in facing spaced relation to an interior wall portion of said second member, whereby upon relative motion of said second member with respect to said first member fluid is circulated.
Claim 3
Dependent Claim
21 words
The invention defined in claim 1 wherein said uni-directional driving means includes a plurality of sprag elements in an annular array.
Claim 4
Dependent Claim
16 words
The invention defined in claim 1 including a reservoir of fluid lubricant maintained within said sump.
Claim 5
Dependent Claim
16 words
The invention defined in claim 1 wherein said passageways are disposed below said uni-directional driving means.
Claim 6
Dependent Claim
26 words
The invention defined in claim 1 wherein said passageways lie in a plane generally at right angle to the axis of rotation of said second member.
Claim 7
Dependent Claim
26 words
The invention defined in claim 3 including an annular bearing between the interior portion of said first member and an adjacent portion of said second member.
Claim 8
Dependent Claim
15 words
The invention defined in claim 3 including means for extracting heat energy from the lubricant.
References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-03-04 | 1983-09-03 | 1984-03-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-03-04 | 1987-09-03 | 1988-03-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-03-04 | 1991-09-03 | 1992-03-04 | $7700.00 | Window Closed / Lapsed |