Patent UST884012I4 successfully refreshed from Google Patents.
UST884012I4
Expired / Lapsed
US
⏱️ 0.0 years remaining
Defensive publication
Assignee: —
•
Filing: 1970-02-03
•
Granted: 1971-03-16
•
Expires: 1990-02-03
Abstract
Abstract AN INJECTION VALVE THAT INCLUDES A BODY HAVING INLET AND OUTLET ENDS CONNECTED BY A PASSAGE WHICH HAS SUCCESSIVE CYLINDRICAL AND TAPERED LENGTHS. A STEM HAVING A CYLINDRICAL PORTION SOMEWHAT SMALLER THAN THE CYLINDRICAL LENGTH OF THE PASSAGE AND A TAPERED PORTION THAT MATCHES THE TAPERED LENGTH OF THE PASSAGE EXTENDS INTO THE PASSAGE. A BIASING MEANS CONNECTED BETWEEN THE VALVE BODY AND THE STEM URGES THE TAPERED PORTION OF THE STEM INTO ENGAGEMENT WITH THE TAPERED LENGTH OF THE PASSAGE TO SEAL AND CLOSE OFF THE PASSAGE AT THE OUTLET END. D R A W I N G
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 10:50
CPC Classifications
F; F16; F16K; F16K17/00; F16K17/02; F16K17/04; F16K17/06; Y; Y10; Y10T; Y10T137/00; Y10T137/7722; Y10T137/7837; Y10T137/7904; Y10T137/7922; Y10T137/7929; Y10T137/7931
Claims Analysis
Total Claims: 0
No claims parsed yet. Click Sync Now above to re-index claims from Google Patents.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-03-15 | 1974-09-14 | 1975-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-03-15 | 1978-09-14 | 1979-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-03-15 | 1982-09-14 | 1983-03-16 | $7700.00 | Window Closed / Lapsed |