US3848702A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricating system for vertical machine elements
Assignee: Copeland Corp LLC
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Filing: 1972-10-02
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Granted: 1974-11-19
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Expires: 1992-10-02
Abstract
Abstract Means for lubricating a bearing in a mechanism which is operated intermittently, the illustrated example of which is the main drive bearing of a refrigerant compressor of the type having a casing wherein lubricant normally stands at a level and wherein the refrigerant compressing mechanism and a motor for driving it are mounted in the casing above that level, the means comprising a generally vertically disposed drive shaft having a portion journaled in the bearing, means supporting the drive shaft with the drive shaft portion journaled in the bearing disposed above said level, means for rotating the drive shaft, means defining a recess within the drive shaft adjacent the bearing and defining a passage through which lubricant may flow from the recess to the bearing, lubricant pump means extending into the lubricant reservoir below said level and extending into the recess and effective to pump lubricant from the reservoir into the recess, the means defining the recess including means retaining lubricant in the recess when rotation of the pump stops and the lubricant pump means stops so that such retained lubricant may flow from the recess through the passage to lubricate the bearing when rotation of the drive shaft resumes.
Inventors
- 👤 E Bergman
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 23:15
CPC Classifications
F; F16; F16N; F16N7/00; F16N7/36; F16N7/366; F04; F04C; F04C29/00; F04C29/02; F04C29/023; F04D; F04D3/00; F04D3/02; F25; F25B; F25B31/00; F25B31/002
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
196 words
In combination, means providing a main lubricant reservoir wherein lubricant normally stands at a level, a generally vertically disposed drive shaft havinG a journal, means supporting said drive shaft with said journal disposed above said level, and providing a bearing for said journal, means for rotating said drive shaft, means for lubricating said bearing comprising means defining a recess within said drive shaft adjacent said bearing and defining a passage through which lubricant may flow from said recess to said bearing driving rotation of said drive shaft, lubricant pump means extending into said main lubricant reservoir below said level and extending into said recess and effective to pump lubricant from said main lubricant reservoir into said recess, said means defining said recess including means retaining lubricant therein when rotation of said drive shaft stops and said lubricant pump means stops so that such retained lubricant may flow therefrom through said passage to lubricate said bearing when rotation of said drive shaft resumes, said recess communicating with the interior of said tubular drive shaft and said means for retaining lubricant within said recess comprising a dam between said recess and the interior of said tubular drive shafting.
Claim 2
Dependent Claim
196 words
In combination, means providing a main lubricant reservoir wherein lubricant normally stands at a level, a generally vertically disposed drive shaft havinG a journal, means supporting said drive shaft with said journal disposed above said level, and providing a bearing for said journal, means for rotating said drive shaft, means for lubricating said bearing comprising means defining a recess within said drive shaft adjacent said bearing and defining a passage through which lubricant may flow from said recess to said bearing driving rotation of said drive shaft, lubricant pump means extending into said main lubricant reservoir below said level and extending into said recess and effective to pump lubricant from said main lubricant reservoir into said recess, said means defining said recess including means retaining lubricant therein when rotation of said drive shaft stops and said lubricant pump means stops so that such retained lubricant may flow therefrom through said passage to lubricate said bearing when rotation of said drive shaft resumes, said recess communicating with the interior of said tubular drive shaft and said means for retaining lubricant within said recess comprising a dam between said recess and the interior of said tubular drive shafting.
Claim 3
Dependent Claim
21 words
The combination defined in claim 1 wherein said lubricant pump means extends into said recess to a point above said dam.
Claim 4
Dependent Claim
19 words
The combination defined in claim 2 wherein said passage communicates with said recess at a point above said dam.
Claim 5
Dependent Claim
25 words
The combination defined in claim 1 wherein said lubricant pump means comprises a cylindrical member having at least one helix on the outer surface thereof.
Claim 6
Dependent Claim
29 words
The combination defined in claim 4 wherein said member has an opening extending axially therethrough through which excess lubricant may return from said recess to said main lubricant reservoir.
Claim 7
Dependent Claim
186 words
In a refrigerant motor-compressor assembly of the type having a casing wherein lubricant normally stands at a level to define a lubricant reservoir and having refrigerant compressing mechanism in an upper portion thereof, and a motor for driving said mechanism mounted in a lower portion of said casing, said mechanism extending above said level, a generally vertically disposed drive shaft adapted to be driven by said motor and having a passage therein through which lubricant may flow from said reservoir to said mechanism during rotation of said drive shaft, lubricant pump means extending into said reservoir below said level and effective to pump lubricant from said reservoir upwardly through said passage, said mechanism including an eccentric secured to the top portion of the shaft and a bearing within the eccentric is rotatable, said eccentric having a cavity therein for retaining lubricant when rotation of said drive shaft stops and said lubricant pump means stops, and a second passage connecting said cavity to the bearing so that such retained lubricant may flow through said second passage to lubricate said bearing when rotation of said drive shaft resumes.
Claim 8
Dependent Claim
186 words
In a refrigerant motor-compressor assembly of the type having a casing wherein lubricant normally stands at a level to define a lubricant reservoir and having refrigerant compressing mechanism in an upper portion thereof, and a motor for driving said mechanism mounted in a lower portion of said casing, said mechanism extending above said level, a generally vertically disposed drive shaft adapted to be driven by said motor and having a passage therein through which lubricant may flow from said reservoir to said mechanism during rotation of said drive shaft, lubricant pump means extending into said reservoir below said level and effective to pump lubricant from said reservoir upwardly through said passage, said mechanism including an eccentric secured to the top portion of the shaft and a bearing within the eccentric is rotatable, said eccentric having a cavity therein for retaining lubricant when rotation of said drive shaft stops and said lubricant pump means stops, and a second passage connecting said cavity to the bearing so that such retained lubricant may flow through said second passage to lubricate said bearing when rotation of said drive shaft resumes.
Claim 9
Dependent Claim
51 words
The combination defined in claim 6 wherein said cavity communicates with the passage in the shaft and said means for retaining lubricant within said cavity comprises a dam portion between such passage and the bottom of the cavity and another dam portion between the bottom said cavity and the second passage.
Claim 10
Dependent Claim
22 words
The combination defined in claim 7 wherein said lubricant pump means extends into said cavity to a point above said first-mentioned dam.
Claim 11
Dependent Claim
25 words
The combination defined in claim 8 wherein said lubricant pump means comprises a cylindrical member having at least one helix on the outer surface thereof.
Claim 12
Dependent Claim
49 words
The combination defined in claim 9 wherein said member has an opening extending axially therethrough open at its top and the wall of which defines a third dam higher than the first-mentioned dam, and through which opening excess lubricant may return from said cavity to said main lubricant reservoir.
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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) | 1977-11-18 | 1978-05-20 | 1978-11-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-18 | 1982-05-20 | 1982-11-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-18 | 1986-05-20 | 1986-11-19 | $7700.00 | Window Closed / Lapsed |