US3335708A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discriminator devices
Assignee: Associated Engineering Ltd
•
Filing: 1965-01-14
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Granted: 1967-08-15
•
Expires: 1985-01-14
Abstract
No abstract record available.
Inventors
- 👤 Beddoes Gerald Norman
- 👤 Westbrook Michael Hereward
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 22:17
CPC Classifications
F; F02; F02M; F02M55/00; F02M55/04; F02D; F02D41/00; F02D41/02; F02D41/0205; F02D41/30; F02D41/32; F02D41/36; F02D41/365; F02M69/00; F02M69/16; F02M69/18; F02M69/20; F02M69/46; F02M69/462; F02M69/465
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
87 words
IN A FUEL INJECTION SYSTEM FOR INTERNAL COMBUSTION ENGINES COMPRISING AT LEAST ONE ELECTROMAGNETICALLY OPERATED FUEL INJECTION VALVE AND A CONTROL CIRCUIT PRODUCING ELECTRICAL PULSES FOR ENERGISING SAID AT LEAST ONE VALVE TO PASS FUEL TO AN ENGINE AND WHEREIN SAID PULSES VARY IN DURATION AS A FUNCTION OF THE SPEED OF THE ENGINE, THE IMPROVEMENT WHICH CONSISTS OF A MECHANICAL DISCRIMINATOR DEVICE COMPRISING A RESISTANCE ELEMENT HAVING A PREDETERMINED CHARACTERISTIC RELATED TO THE ENGINE WITH WHICH THE SYSTEM IS TO BE USED, A RELATIVELY MOVABLE CON-
Claim 2
Dependent Claim
87 words
IN A FUEL INJECTION SYSTEM FOR INTERNAL COMBUSTION ENGINES COMPRISING AT LEAST ONE ELECTROMAGNETICALLY OPERATED FUEL INJECTION VALVE AND A CONTROL CIRCUIT PRODUCING ELECTRICAL PULSES FOR ENERGISING SAID AT LEAST ONE VALVE TO PASS FUEL TO AN ENGINE AND WHEREIN SAID PULSES VARY IN DURATION AS A FUNCTION OF THE SPEED OF THE ENGINE, THE IMPROVEMENT WHICH CONSISTS OF A MECHANICAL DISCRIMINATOR DEVICE COMPRISING A RESISTANCE ELEMENT HAVING A PREDETERMINED CHARACTERISTIC RELATED TO THE ENGINE WITH WHICH THE SYSTEM IS TO BE USED, A RELATIVELY MOVABLE CON-
References Cited (Backward Citations)
US3036564A
Cited
US3108221A
Cited
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 |