Patent US4585164A successfully refreshed from Google Patents.
Patent US3347556A successfully refreshed from Google Patents.
US3347556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Sealing ring for piston and cylinder assemblies
Assignee: Individual
•
Filing: 1965-02-24
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Granted: 1967-10-17
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Expires: 1985-02-24
Abstract
No abstract record available.
Inventors
- 👤 Lambert W Fleckenstein
- 👤 Andrew J Fleckenstein
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 07:52
CPC Classifications
F; F16; F16J; F16J15/00; F16J15/16; F16J15/32
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
96 words
A SEALING RING INCLUDING A RESILEINT, CIRCULAR RING BODY HAVING INNER AND OUTER PERIPHERALLY EXTENDING SEALSTATIC SEALING SURFACES, THE DYNAMIC SEALING SURFACE BEING DEFINED BY A FIRST PAIR OF SPACED LOBES ON THE RINGS BODY, SAID LOBES BEING CHARACTERIZED BY SPACED CURVILINEAR SURFACES WITH A CONNECTING SURFACE BETWEEN THE CURVILINEAR SURFACES TO DEFINE A CONCAVITY, SAID RING BODY HAVING FLAT ABUTMENT SURFACES ON THE SIDES THEREOF AND EXTENDING AROUND THE PERIPHERY OF THE BODY, SAID ABUTMENT SURFACES EXTENDING GENERALLY PARALLEL TO A CENTRAL AXIS OF THE RING BODY AND FACING TOWARD SAID FIRST PAIR OF SPACED
Claim 2
Dependent Claim
96 words
A SEALING RING INCLUDING A RESILEINT, CIRCULAR RING BODY HAVING INNER AND OUTER PERIPHERALLY EXTENDING SEALSTATIC SEALING SURFACES, THE DYNAMIC SEALING SURFACE BEING DEFINED BY A FIRST PAIR OF SPACED LOBES ON THE RINGS BODY, SAID LOBES BEING CHARACTERIZED BY SPACED CURVILINEAR SURFACES WITH A CONNECTING SURFACE BETWEEN THE CURVILINEAR SURFACES TO DEFINE A CONCAVITY, SAID RING BODY HAVING FLAT ABUTMENT SURFACES ON THE SIDES THEREOF AND EXTENDING AROUND THE PERIPHERY OF THE BODY, SAID ABUTMENT SURFACES EXTENDING GENERALLY PARALLEL TO A CENTRAL AXIS OF THE RING BODY AND FACING TOWARD SAID FIRST PAIR OF SPACED
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) | 1970-10-16 | 1971-04-17 | 1971-10-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-16 | 1975-04-17 | 1975-10-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-16 | 1979-04-17 | 1979-10-17 | $7700.00 | Window Closed / Lapsed |