US3101057A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Injection pump
Assignee: Robert Bosch GmbH
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Filing: 1961-12-05
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Granted: 1963-08-20
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Expires: 1981-12-05
Abstract
No abstract record available.
Inventors
- 👤 Heiser Joachim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 12:11
CPC Classifications
F; F02; F02M; F02M59/00; F02M59/20; F02M59/22; F02M41/00; F02M41/08; F02M41/10; F02M41/12; F02M41/123
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
246 words
IN AN INJECTION PUMP, IN COMBINATION, A CYLINDER HAVING A PUMPING CHAMBER THEREIN; PISTON MEANS IN SAID CYLINDER ADAPTED TO RECIPROCATE THEREIN ALONG PRESSURE AND SUCTION STROKES; INLET PASSAGE MEANS LEADING TO SAID PUMPING CHAMBER; DISCHARGE PASSAGE MEANS LEADING FROM SAID PUMPING CHAMBER; CONTROL MEANS CONNECTED TO SAID PISTON MEANS FOR MOVEMENT THEREWITH AND COOPERATING WITH SAID INLET AND DISCHARGE PASSAGE MEANS FOR OPENING SAID INLET PASSAGE MEANS DURING EACH SUCTION STROKE OF SAID PISTON MEANS AND FOR CLOSING SAID INLET PASSAGE MEANS DURING EACH PRESSURE STROKE OF SAID PISTON MEANS, SAID CONTROL MEANS OPENING SAID DISCHARGE PASSAGE MEANS DURING EACH PRESSURE STROKE OF SAID PISTON MEANS AND CLOSING SAID DISCHARGE PASSAGE MEANS DURING EACH SUCTION STROKE OF SAID PISTON MEANS, SAID CONTROL MEANS BEING CAPABLE OF PREVENTING LEAKAGE OF FUEL BACK TO SAID INLET PASSAGE MEANS DURING THE PRESSURE STROKES OF SAID PISTON MEANS WHEN THE PUMP OPERATES AT RELATIVELY HIGH SPEEDS BUT UNDER CERTAIN OPERATING CONDITIONS, AS WHEN THE PUMP IS USED WITH A RELATIVELY LIGHT FUEL OR WHEN THE PARTS BECOME WORN, BEING INCAPABLE OF PREVENTING LEAKAGE OF FUEL BACK TO SAID INLET PASSAGE MEANS DURING PRESSURE STROKES OF SAID PISTON MEANS WHEN THE PUMP OPERATES AT RELATIVELY SLOW SPEEDS; AND VALVE MEANS CARRIED BY SAID CONTROL MEANS FOR MOVEMENT THEREWITH AND LOCATED IN THE PATH OF FLOW OF FUEL FROM SAID INLET PASSAGE MEANS TO SAID PUMPING CHAMBER FOR PREVENTING FUEL FROM LEAKING BACK TO SAID INLET PASSAGE MEANS DURING PRESSURE STROKES
Claim 2
Dependent Claim
246 words
IN AN INJECTION PUMP, IN COMBINATION, A CYLINDER HAVING A PUMPING CHAMBER THEREIN; PISTON MEANS IN SAID CYLINDER ADAPTED TO RECIPROCATE THEREIN ALONG PRESSURE AND SUCTION STROKES; INLET PASSAGE MEANS LEADING TO SAID PUMPING CHAMBER; DISCHARGE PASSAGE MEANS LEADING FROM SAID PUMPING CHAMBER; CONTROL MEANS CONNECTED TO SAID PISTON MEANS FOR MOVEMENT THEREWITH AND COOPERATING WITH SAID INLET AND DISCHARGE PASSAGE MEANS FOR OPENING SAID INLET PASSAGE MEANS DURING EACH SUCTION STROKE OF SAID PISTON MEANS AND FOR CLOSING SAID INLET PASSAGE MEANS DURING EACH PRESSURE STROKE OF SAID PISTON MEANS, SAID CONTROL MEANS OPENING SAID DISCHARGE PASSAGE MEANS DURING EACH PRESSURE STROKE OF SAID PISTON MEANS AND CLOSING SAID DISCHARGE PASSAGE MEANS DURING EACH SUCTION STROKE OF SAID PISTON MEANS, SAID CONTROL MEANS BEING CAPABLE OF PREVENTING LEAKAGE OF FUEL BACK TO SAID INLET PASSAGE MEANS DURING THE PRESSURE STROKES OF SAID PISTON MEANS WHEN THE PUMP OPERATES AT RELATIVELY HIGH SPEEDS BUT UNDER CERTAIN OPERATING CONDITIONS, AS WHEN THE PUMP IS USED WITH A RELATIVELY LIGHT FUEL OR WHEN THE PARTS BECOME WORN, BEING INCAPABLE OF PREVENTING LEAKAGE OF FUEL BACK TO SAID INLET PASSAGE MEANS DURING PRESSURE STROKES OF SAID PISTON MEANS WHEN THE PUMP OPERATES AT RELATIVELY SLOW SPEEDS; AND VALVE MEANS CARRIED BY SAID CONTROL MEANS FOR MOVEMENT THEREWITH AND LOCATED IN THE PATH OF FLOW OF FUEL FROM SAID INLET PASSAGE MEANS TO SAID PUMPING CHAMBER FOR PREVENTING FUEL FROM LEAKING BACK TO SAID INLET PASSAGE MEANS DURING PRESSURE STROKES
References Cited (Backward Citations)
US2928352A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-08-19 | 1967-02-18 | 1967-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-08-19 | 1971-02-18 | 1971-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-08-19 | 1975-02-18 | 1975-08-20 | $7700.00 | Window Closed / Lapsed |