US3320893A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Regulated injection pump
Assignee: Robert Bosch GmbH
•
Filing: 1966-05-11
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Granted: 1967-05-23
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Expires: 1986-05-11
Abstract
No abstract record available.
Inventors
- 👤 Koster Claus
- 👤 Hofer Gerald
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 23:05
CPC Classifications
F; F02; F02M; F02M41/00; F02M41/08; F02M41/10; F02M41/12; F02M41/123; F02M41/125; F02M41/127
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
195 words
REGULATED INJECTION PUMP COMPRISING, IN COMBINATION, MAIN PUMP MEANS HAVING AN INLET, AT LEAST ONE DELIVERY CONDUIT, AND A RELIEF CONDUIT, AND INCLUDING A RECIPROCABLE MAIN PISTON; A CONTROL CYLINDER MEMBER LOCATED IN SAID RELIEF CONDUIT AND HAVING A THROTTLING CONDUIT AND AN OUTLET CONDUIT OPENING INTO SAID THROTTLING CONDUIT; A CONTROL PISTON MEMBER LOCATED IN SAID CONTROL CYLINDER MEMBER, ONE OF SAID MEMBERS BEING BIASSED TO MOVE IN ONE DIRECTION TO A POSITION CLOSING SAID OUTLET AND RELIEF CONDUITS; AUXILIARY PUMP MEANS OPERATING IN SYNCHRONISM WITH SAID MAIN PUMP MEANS AND HAVING AN INLET FOR A FLUID; SUPPLY CONDUIT MEANS CONNECTING SAID AUXILIARY PUMP MEANS WITH SAID CONTROL CYLINDER MEMBER SO THAT SAID AUXILIARY PUMP MEANS PUMPS THE FLUID THROUGH SAID SUPPLY CONDUIT MEANS INTO SAID CYLINDER MEMBER FOR MOVING SAID BIASSED MEMBER OPPOSITE TO SAID ONE DIRECTION FOR FIRST OPENING SAID RELIEF CONDUIT AND FOR THEN CONNECTING SAID SUPPLY CONDUIT MEANS WITH SAID OUTLET CONDUIT, SAID SUPPLY CONDUIT MEANS HAVING A CHECK VALVE BLOCKING FLOW INTO SAID AUXILIARY PUMP MEANS SO THAT THE FLUID IS PRESSED THROUGH SAID THROTTLING CONDUIT BY AID BIASSED MEMBER RETURNING IN ONE DIRECTION WHEREBY A HIGH SPEEDS THE
Claim 2
Dependent Claim
195 words
REGULATED INJECTION PUMP COMPRISING, IN COMBINATION, MAIN PUMP MEANS HAVING AN INLET, AT LEAST ONE DELIVERY CONDUIT, AND A RELIEF CONDUIT, AND INCLUDING A RECIPROCABLE MAIN PISTON; A CONTROL CYLINDER MEMBER LOCATED IN SAID RELIEF CONDUIT AND HAVING A THROTTLING CONDUIT AND AN OUTLET CONDUIT OPENING INTO SAID THROTTLING CONDUIT; A CONTROL PISTON MEMBER LOCATED IN SAID CONTROL CYLINDER MEMBER, ONE OF SAID MEMBERS BEING BIASSED TO MOVE IN ONE DIRECTION TO A POSITION CLOSING SAID OUTLET AND RELIEF CONDUITS; AUXILIARY PUMP MEANS OPERATING IN SYNCHRONISM WITH SAID MAIN PUMP MEANS AND HAVING AN INLET FOR A FLUID; SUPPLY CONDUIT MEANS CONNECTING SAID AUXILIARY PUMP MEANS WITH SAID CONTROL CYLINDER MEMBER SO THAT SAID AUXILIARY PUMP MEANS PUMPS THE FLUID THROUGH SAID SUPPLY CONDUIT MEANS INTO SAID CYLINDER MEMBER FOR MOVING SAID BIASSED MEMBER OPPOSITE TO SAID ONE DIRECTION FOR FIRST OPENING SAID RELIEF CONDUIT AND FOR THEN CONNECTING SAID SUPPLY CONDUIT MEANS WITH SAID OUTLET CONDUIT, SAID SUPPLY CONDUIT MEANS HAVING A CHECK VALVE BLOCKING FLOW INTO SAID AUXILIARY PUMP MEANS SO THAT THE FLUID IS PRESSED THROUGH SAID THROTTLING CONDUIT BY AID BIASSED MEMBER RETURNING IN ONE DIRECTION WHEREBY A HIGH SPEEDS THE
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-22 | 1970-11-21 | 1971-05-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-22 | 1974-11-21 | 1975-05-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-22 | 1978-11-21 | 1979-05-23 | $7700.00 | Window Closed / Lapsed |