US3118682A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Elastic seal with expandable back-up member
Assignee: Otis Engineering Corp
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Filing: 1961-05-05
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Granted: 1964-01-21
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Expires: 1981-05-05
Abstract
No abstract record available.
Inventors
- 👤 John V Fredd
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 01:08
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/166
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
149 words
A SEALING DEVICE FOR SEALING A GAP BETWEEN ANGULARLY RELATED ADJACENT ANNULAR SURFACES COMPRISING: A CYLINDRICAL ELASTIC SEAL MEMBER; AN IMPERFORATE ANNULAR METALLIC MEMBER MOUNTED AT ONE END OF SAID ELASTIC SSEAL MEMBER IN COXIAL RELATION THEREWITH, SAID ANNULAR METALLIC MEMBER HAVING RADIALLY EXTENDING SURFACES PROVIDED WITH CONVOLUTIONS WHICH IMPART RESILIENCY AND FLEXIBILITY TO SAID ANNULAR MEMBER WHEREBY SAID ANNULAR METALLIC MEMBER IS READILY EXPANDABLE AND CONTRACTABLE RADIALLY TO INCREASE AND REDUCE ITS CIRCUMFERENTIAL DIMENSION, SAID METALLIC MEMBER HAVING RADIALLY SPACED INNER AND OUTER CIRCUMFERENTIAL EDGES WHICH ARE ANGULARLY RELATED IN AN AXIAL DIRECTION THEREOF TO DEFINE A WEDGE COVERING AXIALLY OUTWARDLY OF SAID SEAL MEMBER WHEREBY SAID METALLIC MEMBER MAY BE WEDGED BETWEEN SAID ADJACENT SURFACES TO PREVENT EXTRUSION OF SAID SEAL MEMBER WHEN SAID SEALING DEVICE IS DISPOSED IN SAID GAP AND A DIFFERENTIAL PRESSURE ACTS ACROSS SAID SEALING DEVICE IN THE DIRECTION OF SAID METALLIC MEMBER.
Claim 2
Dependent Claim
149 words
A SEALING DEVICE FOR SEALING A GAP BETWEEN ANGULARLY RELATED ADJACENT ANNULAR SURFACES COMPRISING: A CYLINDRICAL ELASTIC SEAL MEMBER; AN IMPERFORATE ANNULAR METALLIC MEMBER MOUNTED AT ONE END OF SAID ELASTIC SSEAL MEMBER IN COXIAL RELATION THEREWITH, SAID ANNULAR METALLIC MEMBER HAVING RADIALLY EXTENDING SURFACES PROVIDED WITH CONVOLUTIONS WHICH IMPART RESILIENCY AND FLEXIBILITY TO SAID ANNULAR MEMBER WHEREBY SAID ANNULAR METALLIC MEMBER IS READILY EXPANDABLE AND CONTRACTABLE RADIALLY TO INCREASE AND REDUCE ITS CIRCUMFERENTIAL DIMENSION, SAID METALLIC MEMBER HAVING RADIALLY SPACED INNER AND OUTER CIRCUMFERENTIAL EDGES WHICH ARE ANGULARLY RELATED IN AN AXIAL DIRECTION THEREOF TO DEFINE A WEDGE COVERING AXIALLY OUTWARDLY OF SAID SEAL MEMBER WHEREBY SAID METALLIC MEMBER MAY BE WEDGED BETWEEN SAID ADJACENT SURFACES TO PREVENT EXTRUSION OF SAID SEAL MEMBER WHEN SAID SEALING DEVICE IS DISPOSED IN SAID GAP AND A DIFFERENTIAL PRESSURE ACTS ACROSS SAID SEALING DEVICE IN THE DIRECTION OF SAID METALLIC 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) | 1967-01-20 | 1967-07-22 | 1968-01-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-20 | 1971-07-22 | 1972-01-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-20 | 1975-07-22 | 1976-01-21 | $7700.00 | Window Closed / Lapsed |