Patent US3119340A successfully refreshed from Google Patents.
US3119340A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Variable pump for fuel injection supply
Assignee: Northrop Grumman Space and Mission Systems Corp
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Filing: 1961-09-22
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Granted: 1964-01-28
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Expires: 1981-09-22
Abstract
No abstract record available.
Inventors
- 👤 Harold R Scibbe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 20:28
CPC Classifications
F; F02; F02M; F02M59/00; F02M59/44; F02M59/02; F02M59/04; F02M59/06; F02M59/20; F02M59/30; Y; Y10; Y10T; Y10T74/00; Y10T74/16; Y10T74/1625; Y10T74/1675; Y10T74/21; Y10T74/2101; Y10T74/2102; Y10T74/2173; Y10T74/2179
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
159 words
A VARIABLE DISPLACEMENT FLUID PUMP COMPRISING, A PUMP DRIVE SHAFT, A PUMP PISTON SLIDABLY MOUNTED IN A CYLINDER EXTENDING RADIALLY FROM THE DRIVE SHAFT, AN ECCENTRIC DRIVE HAVING AN ELEMENT THEREOF IN DRIVING RELATIONSHIP TO THE PISTON AND BEING ADJUSTABLY CONNECTED TO THE SHAFT FOR CONTROLLABLY VARYING THE ECCENTRICITY FOR RECIPROCATING THE PISTON IN ITS CYLINDER, A PLUNGER SLIDABLY MOUNTED COAXIALLY WITH SAID SHAFT AND NON-YIELDABLY CONNECTED TO SAID ECCENTRIC DRIVE FOR CHANGING ITS ECCENTRICITY WITH AXIAL MOVEMENT RELATIVE TO THE SHAFT, A SPRING ENGAGING THE PLUNGER AND URGING IT IN A FIRST AXIAL DIRECTION TO INCREASE THE ECCENTRICITY OF THE DRIVE ELEMENT AND THE STROKE OF THE PISTON, AN OPERATING SURFACE ON SAID PLUNGER FACING IN SAID FIRST DIRECTION, AND A CONTROL MEMBER ENGAGING SAID PLUNGER SURFACE AND MOVING THE PLUNGER AGAINST THE SPRING FOR DECREASING THE ECCENTRICITY OF THE DRIVE AND THE STROKE OF THE PISTON FOR POSITIVE CONTROL IN A DIRECTION TO REDUCE THE PUMP OUTPUT.
Claim 2
Dependent Claim
159 words
A VARIABLE DISPLACEMENT FLUID PUMP COMPRISING, A PUMP DRIVE SHAFT, A PUMP PISTON SLIDABLY MOUNTED IN A CYLINDER EXTENDING RADIALLY FROM THE DRIVE SHAFT, AN ECCENTRIC DRIVE HAVING AN ELEMENT THEREOF IN DRIVING RELATIONSHIP TO THE PISTON AND BEING ADJUSTABLY CONNECTED TO THE SHAFT FOR CONTROLLABLY VARYING THE ECCENTRICITY FOR RECIPROCATING THE PISTON IN ITS CYLINDER, A PLUNGER SLIDABLY MOUNTED COAXIALLY WITH SAID SHAFT AND NON-YIELDABLY CONNECTED TO SAID ECCENTRIC DRIVE FOR CHANGING ITS ECCENTRICITY WITH AXIAL MOVEMENT RELATIVE TO THE SHAFT, A SPRING ENGAGING THE PLUNGER AND URGING IT IN A FIRST AXIAL DIRECTION TO INCREASE THE ECCENTRICITY OF THE DRIVE ELEMENT AND THE STROKE OF THE PISTON, AN OPERATING SURFACE ON SAID PLUNGER FACING IN SAID FIRST DIRECTION, AND A CONTROL MEMBER ENGAGING SAID PLUNGER SURFACE AND MOVING THE PLUNGER AGAINST THE SPRING FOR DECREASING THE ECCENTRICITY OF THE DRIVE AND THE STROKE OF THE PISTON FOR POSITIVE CONTROL IN A DIRECTION TO REDUCE THE PUMP OUTPUT.
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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) | 1967-01-27 | 1967-07-29 | 1968-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-01-27 | 1971-07-29 | 1972-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-01-27 | 1975-07-29 | 1976-01-28 | $7700.00 | Window Closed / Lapsed |