Patent US3131938A successfully refreshed from Google Patents.
US3131938A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Packing cartridge assembly
Assignee: Individual
•
Filing: 1960-07-08
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Granted: 1964-05-05
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Expires: 1980-07-08
Abstract
No abstract record available.
Inventors
- 👤 William R Barry
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 23:43
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32; F16J15/3204
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
165 words
IN COMBINATION WITH A PISTON RECIPROCALLY DISPOSED WITHIN A TAPERED BORE, A PACKING CARTRIDGE ASSEMBLY COMPRISING AN OUTER HOUSING HAVING A TAPERED OUTER PERIPHERY COMPLEMENTARY TO THE TAPERED BORE TO PROVIDE A LOCKING POSITION FOR THE PACKING CARTRIDGE ASSEMBLY AROUND THE PISTON, A PAIR OF SPACED WIPER RINGS PROVIDED IN THE HOUSING, A PLURALITY OF SUPERIMPOSED SEALING MEMBERS DISPOSED WITHIN THE HOUSING, AN INWARDLY DIRECTED SHOULDER PROVIDED IN THE HOUSING FOR SUPPORTING THE SEALING MEMBERS, BUSHING MEANS THREADEDLY SECURED TO THE HOUSING AND COOPERATING THEREWITH FOR COMPRESSION OF THE SEALING MEMBERS TO PROVIDE AN EFFICIENT SEALING THEREOF, A GUIDE SLEEVE DISPOSED WITHIN THE HOUSING FOR REDUCING THE WEAR ON THE SEALING MEMBERS, MEANS FOR DIRECTING A HYDRAULIC FLUID BETWEEN THE TAPERED BORE AND OUTER HOUSING FOR A RELEASE OF THE LOCKING ENGAGEMENT OF THE PACKING CARTRIDGE ASSEMBLY AROUND THE PISTON, MEANS TO PROVIDE LUBRICATION TO THE SEALING RINGS, AND SAID SEALING MEMBERS COMPRISING AN ANNULAR RE-ENFORCING RING HAVING A RESILIENT SEALING PORTION FORMED INTEGRALLY THEREWITH.
Claim 2
Dependent Claim
165 words
IN COMBINATION WITH A PISTON RECIPROCALLY DISPOSED WITHIN A TAPERED BORE, A PACKING CARTRIDGE ASSEMBLY COMPRISING AN OUTER HOUSING HAVING A TAPERED OUTER PERIPHERY COMPLEMENTARY TO THE TAPERED BORE TO PROVIDE A LOCKING POSITION FOR THE PACKING CARTRIDGE ASSEMBLY AROUND THE PISTON, A PAIR OF SPACED WIPER RINGS PROVIDED IN THE HOUSING, A PLURALITY OF SUPERIMPOSED SEALING MEMBERS DISPOSED WITHIN THE HOUSING, AN INWARDLY DIRECTED SHOULDER PROVIDED IN THE HOUSING FOR SUPPORTING THE SEALING MEMBERS, BUSHING MEANS THREADEDLY SECURED TO THE HOUSING AND COOPERATING THEREWITH FOR COMPRESSION OF THE SEALING MEMBERS TO PROVIDE AN EFFICIENT SEALING THEREOF, A GUIDE SLEEVE DISPOSED WITHIN THE HOUSING FOR REDUCING THE WEAR ON THE SEALING MEMBERS, MEANS FOR DIRECTING A HYDRAULIC FLUID BETWEEN THE TAPERED BORE AND OUTER HOUSING FOR A RELEASE OF THE LOCKING ENGAGEMENT OF THE PACKING CARTRIDGE ASSEMBLY AROUND THE PISTON, MEANS TO PROVIDE LUBRICATION TO THE SEALING RINGS, AND SAID SEALING MEMBERS COMPRISING AN ANNULAR RE-ENFORCING RING HAVING A RESILIENT SEALING PORTION FORMED INTEGRALLY THEREWITH.
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) | 1967-05-05 | 1967-11-04 | 1968-05-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-05-05 | 1971-11-04 | 1972-05-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-05-05 | 1975-11-04 | 1976-05-05 | $7700.00 | Window Closed / Lapsed |