US3685840A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packing for compressors, pumps or the like
Assignee: Dresser Rand Co
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Filing: 1971-03-29
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Granted: 1972-08-22
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Expires: 1991-03-29
Abstract
Abstract The improved packing rings described in detail hereinafter provide an integrally formed, internally located check valve for use in the lubrication systems compressors, pumps or the like. Specifically, and in the preferred form, two adjacent packing rings include face portions arranged in sealing engagement with at least one of the packing rings a lubricant passageway therein. An arcuate groove is formed in the face of one of the packing rings in communication with the lubricant passageway. One of the packing rings includes a pressure-responsive, integrally formed annular lip that encompasses the arcuate groove. The arrangement is such that a predetermined pressure in the lubricant groove moves the lip away from the adjacent packing ring permitting lubricant to pass out of the arcuate groove into the interior of the compressor. During the compression stroke of the compressor, the high pressure existing inside the compressor acts on the pressure responsive lip forcing it into tighter sealing engagement with the adjacent packing ring preventing the compressor pressure from entering the lubrication system.
Inventors
- 👤 Ralph E Henry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 20:13
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/162; F04; F04B; F04B39/00; F04B39/04; F04B39/041
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
184 words
In an improved compressor, pump or the like including a cylinder, a plunger arranged to reciprocate in the cylinder, and a lubrication system including a source of lubricant under pressure, the improvement comprising: first means having a bore arranged to encircle the plunger and including a pressure-responsive lip, said lip extending toward said bore and having a generally, radially-disposed sealing surface thereon; second means having a bore arranged to encircle the plunger, said second means including a face portion sealingly engaging the sealing surface on said lip; a lubricant passageway in one of said first and second means and arranged for fluid communication with the lubricant source; an arcuate groove in one of said face portion and sealing surface in fluid communication with said passageway; and, said lip being movable out of sealing engagement with said face portion in response to lubricant pressure whereby said lubricant passes between said sealing surface and face portion onto the plunger, said lip being responsive to pressure in the compressor to more tightly engage said face portion to prevent leakage of the compressor pressure into said lubricant passageway.
Claim 2
Dependent Claim
184 words
In an improved compressor, pump or the like including a cylinder, a plunger arranged to reciprocate in the cylinder, and a lubrication system including a source of lubricant under pressure, the improvement comprising: first means having a bore arranged to encircle the plunger and including a pressure-responsive lip, said lip extending toward said bore and having a generally, radially-disposed sealing surface thereon; second means having a bore arranged to encircle the plunger, said second means including a face portion sealingly engaging the sealing surface on said lip; a lubricant passageway in one of said first and second means and arranged for fluid communication with the lubricant source; an arcuate groove in one of said face portion and sealing surface in fluid communication with said passageway; and, said lip being movable out of sealing engagement with said face portion in response to lubricant pressure whereby said lubricant passes between said sealing surface and face portion onto the plunger, said lip being responsive to pressure in the compressor to more tightly engage said face portion to prevent leakage of the compressor pressure into said lubricant passageway.
Claim 3
Dependent Claim
22 words
The improvement of claim 1 wherein: said first means also includes said lubricant passageway; and, said second means includes said arcuate groove.
Claim 4
Dependent Claim
16 words
The improvement of claim 1 wherein said first means includes said lubricant passageway and arcuate groove.
Claim 5
Dependent Claim
16 words
The improvement of claim 1 wherein said second means includes said lubricant passageway and arcuate groove.
Claim 6
Dependent Claim
21 words
The improvement of claim 1 wherein: said first means includes said arcuate groove; and, said second means includes said lubricant passageway.
Claim 7
Dependent Claim
27 words
The improvement of claim 1 wherein said first and second means include an annular, pressure-responsive lip extending toward the bore therein and having said face portion thereon.
Claim 8
Dependent Claim
32 words
The improvement of claim 1 wherein said first and second means comprise first and second annular packing members, respectively, arranged to be located within the cylinder in encircling relationship to the plunger.
Claim 9
Dependent Claim
26 words
The improvement of claim 7 wherein: said first annular packing member also includes said lubricant passageway; and, said second annular packing member includes said arcuate groove.
Claim 10
Dependent Claim
18 words
The improvement of claim 7 wherein said first annular packing member includes said lubricant passageway and arcuate groove.
Claim 11
Dependent Claim
18 words
The improvement of claim 7 wherein said second annular packing member includes said lubricant passageway and arcuate groove.
Claim 12
Dependent Claim
25 words
The improvement of claim 7 wherein: said first annular packing member includes said arcuate groove; and, said second annular packing member includes said lubricant passageway.
Claim 13
Dependent Claim
26 words
The improvement of claim 7 wherein said second annular packing member includes a pressure-responsive lip extending toward the bore therein and having said face portion thereon.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-08-22 | 1976-02-21 | 1976-08-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-08-22 | 1980-02-21 | 1980-08-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-08-22 | 1984-02-21 | 1984-08-22 | $7700.00 | Window Closed / Lapsed |