Patent US3157404A successfully refreshed from Google Patents.
US3157404A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Shaft seal with corrugated frustoconical spring for driving or restraining sealing member
Assignee: Jabsco Pump Co
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Filing: 1962-03-19
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Granted: 1964-11-17
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Expires: 1982-03-19
Abstract
No abstract record available.
Inventors
- 👤 Doble Warren
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 17:49
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/34; F16J15/38
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
151 words
IN A SHAFT SEAL, THE COMBINATION OF: (A) ROTARY AND NONROTARY SEALING MEMBERS ENGAGEABLE IN FACE TO FACE RELATION; (B) AN ANNULAR SPRING SEAT SPACED AXIALLY FROM ONE OF SAID SEALING MEMBERS; (C) ANNULAR SPRING MEANS BETWEEN AND ENGAGING SAID SPRING SEAT AND SAID ONE SEALING MEMBER FOR MAINTAINING SAID SEALING MEMBERS IN SAID FACE TO FACE ENGAGEMENT; (D) SAID SPRING SEAT, SAID SPRING MEANS AND SAID ONE SEALING MEMBER BEING PROVIDED WITH MESHED, CIRCUMFERENTIALLY SPACED, RADIAL CORRUGATIONS WHICH KEY SAID ONE SEALING MEMBER TO SAID SPRING SEAT THROUGH SAID SPRING MEANS; AND (E) SAID SPRING MEANS COMPRISING TWO BELLEVILLE SPRINGS ARRANGED IN FACE TO FACE RELATION AND HAVING MESHED, CIRCUMFERENTIALLY, SPACED RADIAL CORRUGATIONS, THE CORRUGATIONS OF ONE OF SAID BELLEVILLE SPRINGS BEING MESHED WITH THE CORRUGATIONS OF SAID SPRING SEAT AND THE CORRUGATIONS OF THE OTHER OF SAID BELLEVILLE SPRINGS BEING MESHED WITH THE CORRUGATIONS OF SAID ONE SEALING MEMBER.
Claim 2
Dependent Claim
151 words
IN A SHAFT SEAL, THE COMBINATION OF: (A) ROTARY AND NONROTARY SEALING MEMBERS ENGAGEABLE IN FACE TO FACE RELATION; (B) AN ANNULAR SPRING SEAT SPACED AXIALLY FROM ONE OF SAID SEALING MEMBERS; (C) ANNULAR SPRING MEANS BETWEEN AND ENGAGING SAID SPRING SEAT AND SAID ONE SEALING MEMBER FOR MAINTAINING SAID SEALING MEMBERS IN SAID FACE TO FACE ENGAGEMENT; (D) SAID SPRING SEAT, SAID SPRING MEANS AND SAID ONE SEALING MEMBER BEING PROVIDED WITH MESHED, CIRCUMFERENTIALLY SPACED, RADIAL CORRUGATIONS WHICH KEY SAID ONE SEALING MEMBER TO SAID SPRING SEAT THROUGH SAID SPRING MEANS; AND (E) SAID SPRING MEANS COMPRISING TWO BELLEVILLE SPRINGS ARRANGED IN FACE TO FACE RELATION AND HAVING MESHED, CIRCUMFERENTIALLY, SPACED RADIAL CORRUGATIONS, THE CORRUGATIONS OF ONE OF SAID BELLEVILLE SPRINGS BEING MESHED WITH THE CORRUGATIONS OF SAID SPRING SEAT AND THE CORRUGATIONS OF THE OTHER OF SAID BELLEVILLE SPRINGS BEING MESHED WITH THE CORRUGATIONS OF SAID ONE SEALING MEMBER.
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) | 1967-11-17 | 1968-05-18 | 1968-11-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-11-17 | 1972-05-18 | 1972-11-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-11-17 | 1976-05-18 | 1976-11-17 | $7700.00 | Window Closed / Lapsed |