US3303853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve assembly
Assignee: IMPERIAL MACHINE CORP
•
Filing: 1964-01-28
•
Granted: 1967-02-14
•
Expires: 1984-01-28
Abstract
No abstract record available.
Inventors
- 👤 Auguste J Bouthiller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:36
CPC Classifications
F; F16; F16K; F16K11/00; F16K11/02; F16K11/06; F16K11/065; Y; Y10; Y10T; Y10T137/00; Y10T137/8593; Y10T137/86493; Y10T137/86879
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
92 words
A HOLLOW CYLINDRICAL PART SPLIT TRANSVERSELY OF ITS CYLINDRICAL WALL, THE OPPOSED ENDS OF THE WALL, WHERE THE SPLIT IS LOCATED, CONTAINING POCKETS, SPRINGS DISPOSED IN THE POCKETS OPERATIVE TO HOLD THE CYLINDRICAL PART EXPANDED, A FLAT AT EACH SIDE OF THE SPLIT ON THE OUTER SURFACE OF THE WALL WIDTHWISE OF THE PART, AND CIRCUMFERENTIALLY EXTENDING RECESSES IN THE WALL COMMENCING AT ONE END ADJACENT THE FLATS AND TERMINATING AT THEIR OTHER ENDS IN SPACED RELATION, THE PORTION OF THE WALL BETWEEN SAID ENDS BEING UNIFORMLY CYLINDRICAL WIDTHWISE OF THE PART.
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) | 1970-02-13 | 1970-08-15 | 1971-02-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-02-13 | 1974-08-15 | 1975-02-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-02-13 | 1978-08-15 | 1979-02-14 | $7700.00 | Window Closed / Lapsed |