Patent US3785659A successfully refreshed from Google Patents.
US3785659A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packing cartridge for reciprocating pump
Assignee: ExxonMobil Upstream Research Co
•
Filing: 1972-03-17
•
Granted: 1974-01-15
•
Expires: 1992-03-17
Abstract
Abstract A packing cartridge for a reciprocating pump which includes a sleeve adapted to be connected to a recessed end of the fluid end housing and a packing assembly mounted in the sleeve. A lubricating port formed in the sleeve extends from an exposed end thereof to the interior of the sleeve and provides means for delivering lubricant to the packing assembly.
Inventors
- 👤 W Maurer
- 👤 E Lock
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 17:39
CPC Classifications
F; F04; F04B; F04B53/00; F04B53/16; F04B53/162; F04B53/164; F16; F16J; F16J15/00; F16J15/16; F16J15/18; F16J15/184; F16J15/185; F16J15/186
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
133 words
In a reciprocating pump which includes a housing having a bore formed therein and a plunger mounted in said housing for reciprocation in said bore, an improved packing cartridge for sealing the annular space between said housing and said plunger which comprises a sleeve adapted to be detachably mounted to said housing in surrounding relation to said plunger and having an outer exposed portion and an inner end disposed adjacent said housing; and a packing assembly mounted in said sleeve and including a plurality of self-energizing seal rings and a lantern ring disposed between two of said seal rings, said sleeve having formed therein a lubricating port having an inlet at said exposed portion and an outlet in fluid communication with the interior of said sleeve at a location opposite said lantern ring.
Claim 2
Dependent Claim
133 words
In a reciprocating pump which includes a housing having a bore formed therein and a plunger mounted in said housing for reciprocation in said bore, an improved packing cartridge for sealing the annular space between said housing and said plunger which comprises a sleeve adapted to be detachably mounted to said housing in surrounding relation to said plunger and having an outer exposed portion and an inner end disposed adjacent said housing; and a packing assembly mounted in said sleeve and including a plurality of self-energizing seal rings and a lantern ring disposed between two of said seal rings, said sleeve having formed therein a lubricating port having an inlet at said exposed portion and an outlet in fluid communication with the interior of said sleeve at a location opposite said lantern ring.
Claim 3
Dependent Claim
44 words
The invention as defined in claim 1 wherein said packing cartridge further comprises a face seal mounted in said inner end of said sleeve, said face seal adapted to seal the joint between said inner end and a transverse surface formed in said housing.
Claim 4
Dependent Claim
23 words
The invention as defined in claim 1 wherein said packing assembly further includes a spring for maintaining a compressive force on said rings.
Claim 5
Dependent Claim
51 words
The invention as defined in claim 3 wherein said sleeve has formed therein a second port for conducting a wash fluid, said port having an inlet at said exposed portion and an outlet in fluid communication with the interior of said sleeve at a location in advance of said seal rings.
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) | 1977-01-14 | 1977-07-16 | 1978-01-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-01-14 | 1981-07-16 | 1982-01-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-01-14 | 1985-07-16 | 1986-01-15 | $7700.00 | Window Closed / Lapsed |