US3354794A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Piston structure
Assignee: Individual
•
Filing: 1965-05-17
•
Granted: 1967-11-28
•
Expires: 1985-05-17
Abstract
No abstract record available.
Inventors
- 👤 Vacell D Dailey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:58
CPC Classifications
F; F16; F16J; F16J1/00; F16J1/005; F16J1/006; F16J1/008
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
PISTON STRUCTURE COMPRISING A SEALING MEMBER INCLUDING AN ANNULAR DISC, A SEAL SECURED TO THE OUTER PERIPHERY OF THE ANNULAR DISC HAVING AN AXIALLY EXTENDING SEALING FLANGE THEREON AND INCLUDING THREE AXIALLY SPACED APART, RADIALLY INWARDLY OPENING ANNULAR RECESSES THEREIN WITH THE OUTER PERIPHERY OF THE DISC POSITIONED IN THE MIDDLE RECESS, A SEPARATE ANNULAR BUMPER MEMBER AT EACH SIDE OF THE SEALING MEMBER, EACH INCLUDING A RADIALLY OUTWARDLY EXTENDING PERIPHERAL FLANGE RECEIVED WITHIN ONE OF THE OTHER ANNULAR RECESSES IN THE SEAL OF THE SEALING MEMBER AND AN AXIALLY EXTENDING BUMPER PORTION EXTENDING AXIALLY OUTWARDLIY OF THE SEAL.
Claim 2
Dependent Claim
99 words
PISTON STRUCTURE COMPRISING A SEALING MEMBER INCLUDING AN ANNULAR DISC, A SEAL SECURED TO THE OUTER PERIPHERY OF THE ANNULAR DISC HAVING AN AXIALLY EXTENDING SEALING FLANGE THEREON AND INCLUDING THREE AXIALLY SPACED APART, RADIALLY INWARDLY OPENING ANNULAR RECESSES THEREIN WITH THE OUTER PERIPHERY OF THE DISC POSITIONED IN THE MIDDLE RECESS, A SEPARATE ANNULAR BUMPER MEMBER AT EACH SIDE OF THE SEALING MEMBER, EACH INCLUDING A RADIALLY OUTWARDLY EXTENDING PERIPHERAL FLANGE RECEIVED WITHIN ONE OF THE OTHER ANNULAR RECESSES IN THE SEAL OF THE SEALING MEMBER AND AN AXIALLY EXTENDING BUMPER PORTION EXTENDING AXIALLY OUTWARDLIY OF THE SEAL.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-11-27 | 1971-05-29 | 1971-11-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-11-27 | 1975-05-29 | 1975-11-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-11-27 | 1979-05-29 | 1979-11-28 | $7700.00 | Window Closed / Lapsed |