US3335486A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve seat extractor
Assignee: ACF Industries Inc
•
Filing: 1964-07-30
•
Granted: 1967-08-15
•
Expires: 1984-07-30
Abstract
No abstract record available.
Inventors
- 👤 Thomas M Jones
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 21:44
CPC Classifications
B; B25; B25B; B25B27/00; B25B27/02; B25B27/0028; Y; Y10; Y10T; Y10T29/00; Y10T29/53; Y10T29/53552; Y10T29/53796; Y10T29/53896
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
A TOOL FOR EXTRACTING PRESS-FITTED VALVE SEAT RINGS FROM THE SEAT RECESSES OF A VALVE, COMPRISING AN ELONGATED HANDLE HAVING A TOOL HEAD FORMED INTEGRALLY THEREON, SAID TOOL HEAD HAVING A BOSS EXTENDING THEREFROM IN SUBSTANTIALLY NORMAL RELATION THERETO, A PAIR OF OPPOSED SURFACES FORMED ON THE BOSS IN SUBSTANTIALLY NORMAL RELATION TO SAID ELONGATED HANDLE, ONE OF THE SURFACES ADAPTED TO ENGAGE THE INNER PERIPHERAL SURFACE OF A VALVE SEAT RING, A TOOTH DISPOSED ON THE OTHER OF SAID SURFACES ADJACENT THE FREE EXTREMITY THEREOF AND ADAPTED TO FRICTIONALLY ENGAGE THE INNER PERIPHERAL SURFACE OF THE SEAT RING TO BE EXTRACTED TO PREVENT PIVOTING OF THE BOSS WITHIN THE SEAT RING IN A PREDETERMINED DIRECTION AND TO CAUSE THE SEAT RING TO BE PIVOTED OUT OF ITS SEAT RECESS UPON PIVOTING THE HANDLE IN SAID PREDETERMINED DIRECTION.
Claim 2
Dependent Claim
138 words
A TOOL FOR EXTRACTING PRESS-FITTED VALVE SEAT RINGS FROM THE SEAT RECESSES OF A VALVE, COMPRISING AN ELONGATED HANDLE HAVING A TOOL HEAD FORMED INTEGRALLY THEREON, SAID TOOL HEAD HAVING A BOSS EXTENDING THEREFROM IN SUBSTANTIALLY NORMAL RELATION THERETO, A PAIR OF OPPOSED SURFACES FORMED ON THE BOSS IN SUBSTANTIALLY NORMAL RELATION TO SAID ELONGATED HANDLE, ONE OF THE SURFACES ADAPTED TO ENGAGE THE INNER PERIPHERAL SURFACE OF A VALVE SEAT RING, A TOOTH DISPOSED ON THE OTHER OF SAID SURFACES ADJACENT THE FREE EXTREMITY THEREOF AND ADAPTED TO FRICTIONALLY ENGAGE THE INNER PERIPHERAL SURFACE OF THE SEAT RING TO BE EXTRACTED TO PREVENT PIVOTING OF THE BOSS WITHIN THE SEAT RING IN A PREDETERMINED DIRECTION AND TO CAUSE THE SEAT RING TO BE PIVOTED OUT OF ITS SEAT RECESS UPON PIVOTING THE HANDLE IN SAID PREDETERMINED DIRECTION.
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) | 1970-08-14 | 1971-02-13 | 1971-08-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-08-14 | 1975-02-13 | 1975-08-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-08-14 | 1979-02-13 | 1979-08-15 | $7700.00 | Window Closed / Lapsed |