US3538897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel injection pump for internal combustion engines
Assignee: Robert Bosch GmbH
•
Filing: 1969-01-29
•
Granted: 1970-11-10
•
Expires: 1989-01-29
Abstract
No abstract record available.
Inventors
- 👤 Karl Konrath
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:45
CPC Classifications
F; F02; F02M; F02M41/00; F02M41/08; F02M41/10; F02M41/12; F02M41/123; F02M41/125; F02M41/127
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
49 words
IT VARIES A FIRST FLOW PASSAGE SECTION FOR CONTROLLING THE FLOW OF LIQUID BETWEEN AN AUXILIARY PUMP AND A CONTROL PLUNGER WHICH IS DISPLACEABLE BY A LIQUID PRESSURE TO INTERRUPT FUEL DELIVERY DURING PRESSURE STROKES OF THE PUMP BY DETROURING VARYING PARTS OF THE FUEL INTO DISCHARGE MEANS, AND
Claim 2
Dependent Claim
49 words
IT VARIES A FIRST FLOW PASSAGE SECTION FOR CONTROLLING THE FLOW OF LIQUID BETWEEN AN AUXILIARY PUMP AND A CONTROL PLUNGER WHICH IS DISPLACEABLE BY A LIQUID PRESSURE TO INTERRUPT FUEL DELIVERY DURING PRESSURE STROKES OF THE PUMP BY DETROURING VARYING PARTS OF THE FUEL INTO DISCHARGE MEANS, AND
Claim 3
Dependent Claim
32 words
IT VARIES IN THE SAME SENSE A SECOND FLOW PASSAGE SECTION OF A BYPASS CHANNEL FOR DETOURING, TO A GREATER OR LESSER EXTENT, LIQUID INTO DISCHARGE MEANS THUS BYPASSING SAID FIRST FLOW
Claim 4
Dependent Claim
32 words
IT VARIES IN THE SAME SENSE A SECOND FLOW PASSAGE SECTION OF A BYPASS CHANNEL FOR DETOURING, TO A GREATER OR LESSER EXTENT, LIQUID INTO DISCHARGE MEANS THUS BYPASSING SAID FIRST FLOW
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) | 1973-11-09 | 1974-05-11 | 1974-11-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1977-11-09 | 1978-05-11 | 1978-11-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1981-11-09 | 1982-05-11 | 1982-11-10 | $7700.00 | Window Closed / Lapsed |