US3820213A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of making a fuel injector
Assignee: AE PLC
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Filing: 1972-12-15
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Granted: 1974-06-28
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Expires: 1992-12-15
Abstract
Abstract AN ELECTROMAGNETIC FUEL INJECTOR FOR A FUEL INJECTION SYSTEM IS PROVIDED WITH A SOLENOID WINDING WHICH, WHEN FED WITH ELECTRICAL OPERATING CURRENT, PRODUCES A SATURATED MAGNETIC FIELD IN AT LEAST PART OF A MAGNETIC CIRCUIT, WHICH FIELD IS USED TO ATTRACT A MEMBER CONTROLLING THE VALVE MEANS OF THE INJECTOR AND HENCE THE FUEL FLOW. THE VALVE MEANS MAY INCLUDE A PLUNGER HAVING A TIP PORTION OF A PLASTICS OR RUBBER-LIKE MATERIAL TO ENGAGE THE VALVE SEAT. METHODS OF ATTACHING THE TIP PORTION TO THE PLUNGER ARE ALSO DESCRIBED.
Inventors
- 👤 P Kent
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:31
CPC Classifications
F; F02; F02M; F02M51/00; F02M51/06; F02M51/061; F02M51/0625; F02M51/0635; F02M51/0642; F02M51/0653; F02M51/0614; F02M61/00; F02M61/16; F02M61/165; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49405; Y10T29/49412; Y10T29/49416; Y10T29/49428; Y10T29/49432; Y10T29/49826; Y10T29/49861; Y10T29/49863; Y10T29/49947; Y10T29/49959
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1977-06-27 | 1977-12-27 | 1978-06-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-06-27 | 1981-12-27 | 1982-06-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-06-27 | 1985-12-27 | 1986-06-28 | $7700.00 | Window Closed / Lapsed |