Patent US3907986A successfully refreshed from Google Patents.
Patent JPS56147490A successfully refreshed from Google Patents.
US3564579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Valve rotating device
Assignee: Eaton Corp
•
Filing: 1969-04-25
•
Granted: 1971-02-16
•
Expires: 1989-04-25
Abstract
Abstract A ROTATING DEVICE FOR POPPET-TYPE VALVES INCLUDING A SPRING WASHER AND A PLURALITY OF SPRAGS POSITIONED BETWEEN FIRST AND SECOND PARTS, ONE OF SAID PARTS BEING INTERCONNECTED FOR ROTATION WITH THE VALVE. DEFLECTION OF THE SPRING WASHER ON THE VALVE OPEN STROKE CAUSES THE SPRAGS TO PIVOT FROM A FIRST TO A SECOND POSITION RELATIVE TO THE SPRING WASHER, PRODUCING ROCKING MOVEMENT OF THE SPRAGS AND ROTATION OF THE VALVE. THE SPRAGS ARE MOUNTED ON A RESILIENT DEVICE WHICH ENCIRCLES THE VALVE STEM AND NORMALLY BUT YIELDING HOLDS THE SPRAGS IN SAID FIRST POSITION.
Inventors
- 👤 George B K Meacham
- 👤 Vernon A Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 10:27
CPC Classifications
F; F01; F01L; F01L1/00; F01L1/32
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) | 1974-02-15 | 1974-08-17 | 1975-02-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-02-15 | 1978-08-17 | 1979-02-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-02-15 | 1982-08-17 | 1983-02-16 | $7700.00 | Window Closed / Lapsed |