Patent US3173468A successfully refreshed from Google Patents.
US3173468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel control for combustion engines
Assignee: Bendix Corp
•
Filing: 1961-03-30
•
Granted: 1965-03-16
•
Expires: 1981-03-30
Abstract
No abstract record available.
Inventors
- 👤 Jr Howard L Mccombs
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 05:19
CPC Classifications
F; F02; F02C; F02C9/00; F02C9/26; F02C9/38; F02C7/00; F02C7/22; F02C9/16; F02C9/32; F02K; F02K3/00; Y; Y10; Y10T; Y10T137/00; Y10T137/0971; Y10T137/1044
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
327 words
FUEL CONTROL APPARATUS FOR USE WITH A COMBUSTION ENGINE HAVING A COMBUSTION CHAMBER, SAID FUEL CONTROL APPARATUS COMPRISING A CONTROL LEVER FOR CONTROLLING THE OPERATION OF THE ENGINE, A SOURCE OF FUEL UNDER PRESSURE, A FUEL CONDUIT ADAPTED TO BE CONNECTED TO DELIVER FUEL FROM SAID SOURCE TO THE COMBUSTION CHAMBER, VARIABLE AREA VALVE MEANS IN SAID CONDUIT FOR CONTROLLING THE FUEL FLOW THERETHROUGH TO THE COMBUSTION CHAMBER, FLUID PRESSURE RESPONSIVE MEANS OPERATIVELY CONNECTED TO SAID VALVE MEANS FOR CONTROLLING THE OPERATION THEREOF AS A FUNCTION OF A CONTROL FLUID PRESSURE, ENGINE SPEED RESPONSIVE MEANS OPERATIVELY CONNECTED TO SAID VALVE MEANS FOR LOADING SAID VALVE MEANS IN OPPOSITION TO SAID CONTROL FLUID PRESSURE WITH A FORCE WHICH VARIES AS A FUNCTION OF ENGINE SPEED, A PILOT VALVE OPERATIVELY CONNECTED TO THE CONTROL LEVER AND ARRANGED TO VENT THE FLUID FROM WHICH SAID CONTROL FLUID PRESSURE IS DERIVED TO SAID PRESSURE RESPONSIVE MEANS IN RESPONSE TO MOVEMENT OF THE CONTROL LEVER IN ONE DIRECTION AND TO VENT THE FLUID AT SAID CONTROL FLUID PRESSURE AWAY FROM SAID PRESSURE RESPONSIVE MEANS IN RESPONSIVE TO MOVEMENT OF THE CONTROL LEVER IN THE OPPOSITE DIRECTION, TIMING MEANS INCLUDING FLUID FLOW RESTRICTING MEANS FOR CONTROLLING THE RATE OF FLUID FLOW THROUGH SAID PILOT VALVE TO THEREBY LIMIT THE RATE OF DISPLACEMENT OF SAID VALVE MEANS AND THUS THE RATE OF INCREASE IN FUEL FLOW TO THE COMBUSTION CHAMBER TO A PREDETERMINED VALUE DURING AN ACCELERATION OF THE ENGINE, FUEL BYPASS MENS RESPONSIVE TO THE FUEL PRESSURE DIFFERENTIAL ACROSS SAID VARIABLE AREA VALVE MEANS OPERATIVELY CONNECTED TO SAID FUEL CONDUIT FOR CONTROLLNG THE THE FUEL PRESSURE DIFFERENTIAL ACROSS SAID VARIABLE AREA VALVE MEANS, AND MEANS OPERATIVELY CONNECTED TO SAID VARIABLE AREA VALVE MEANS AND SAID ENGINE SPEED RESPONSIVE MEANS FOR MODIFYING THE FUEL PRESSURE DIFFERENTIAL SENSED BY SAID FUEL BYPASS MEANS AS A FUNCTION OF SPEED ERROR FOR ANY GIVEN POSITION OF SAID VARIABLE AREA VALVE MEANS DURING AN ACCELERATION OF THE ENGINE.
Claim 2
Dependent Claim
327 words
FUEL CONTROL APPARATUS FOR USE WITH A COMBUSTION ENGINE HAVING A COMBUSTION CHAMBER, SAID FUEL CONTROL APPARATUS COMPRISING A CONTROL LEVER FOR CONTROLLING THE OPERATION OF THE ENGINE, A SOURCE OF FUEL UNDER PRESSURE, A FUEL CONDUIT ADAPTED TO BE CONNECTED TO DELIVER FUEL FROM SAID SOURCE TO THE COMBUSTION CHAMBER, VARIABLE AREA VALVE MEANS IN SAID CONDUIT FOR CONTROLLING THE FUEL FLOW THERETHROUGH TO THE COMBUSTION CHAMBER, FLUID PRESSURE RESPONSIVE MEANS OPERATIVELY CONNECTED TO SAID VALVE MEANS FOR CONTROLLING THE OPERATION THEREOF AS A FUNCTION OF A CONTROL FLUID PRESSURE, ENGINE SPEED RESPONSIVE MEANS OPERATIVELY CONNECTED TO SAID VALVE MEANS FOR LOADING SAID VALVE MEANS IN OPPOSITION TO SAID CONTROL FLUID PRESSURE WITH A FORCE WHICH VARIES AS A FUNCTION OF ENGINE SPEED, A PILOT VALVE OPERATIVELY CONNECTED TO THE CONTROL LEVER AND ARRANGED TO VENT THE FLUID FROM WHICH SAID CONTROL FLUID PRESSURE IS DERIVED TO SAID PRESSURE RESPONSIVE MEANS IN RESPONSE TO MOVEMENT OF THE CONTROL LEVER IN ONE DIRECTION AND TO VENT THE FLUID AT SAID CONTROL FLUID PRESSURE AWAY FROM SAID PRESSURE RESPONSIVE MEANS IN RESPONSIVE TO MOVEMENT OF THE CONTROL LEVER IN THE OPPOSITE DIRECTION, TIMING MEANS INCLUDING FLUID FLOW RESTRICTING MEANS FOR CONTROLLING THE RATE OF FLUID FLOW THROUGH SAID PILOT VALVE TO THEREBY LIMIT THE RATE OF DISPLACEMENT OF SAID VALVE MEANS AND THUS THE RATE OF INCREASE IN FUEL FLOW TO THE COMBUSTION CHAMBER TO A PREDETERMINED VALUE DURING AN ACCELERATION OF THE ENGINE, FUEL BYPASS MENS RESPONSIVE TO THE FUEL PRESSURE DIFFERENTIAL ACROSS SAID VARIABLE AREA VALVE MEANS OPERATIVELY CONNECTED TO SAID FUEL CONDUIT FOR CONTROLLNG THE THE FUEL PRESSURE DIFFERENTIAL ACROSS SAID VARIABLE AREA VALVE MEANS, AND MEANS OPERATIVELY CONNECTED TO SAID VARIABLE AREA VALVE MEANS AND SAID ENGINE SPEED RESPONSIVE MEANS FOR MODIFYING THE FUEL PRESSURE DIFFERENTIAL SENSED BY SAID FUEL BYPASS MEANS AS A FUNCTION OF SPEED ERROR FOR ANY GIVEN POSITION OF SAID VARIABLE AREA VALVE MEANS DURING AN ACCELERATION OF THE ENGINE.
Claim 3
Dependent Claim
111 words
FUEL CONTROL APPARATUS FOR A COMBUSTION ENGINE AS CLAIMED IN CLAIM 1 WHEREIN SAID CONTROL FLUID PRESSURE IS MODIFIED BY MEANS INCLUDING A NORMALLY CLOSED VALVE MEMBER CONNECTED TO VENT SAID CONTROL FLUID PRESSURE TO A SOURCE OF RELATIVELY LOW FLUID PRESSURE TO THEREBY RESTRICT OPENING MOVEMENT OF SAID VARIABLE AREA VALVE MEANS, SAID VALVE MEMBER BEING OPERATIVELY CONNECTED TO SAID VARIABLE AREA VALVE MEANS AND SAID ENGINE SPEED RESPONSIVE MEANS AND ACTUATED TO AN OPEN POSITION IN RESPONSE TO A SPEED ERROR SIGNAL RESULTING FROM FAILURE OF THE ENGINE TO ADEQUATELY ACCELERATE IN RESPONSE TO THE INCREASE IN FUEL FLOW CAUSED BY OPENING MOVEMENT OF SAID VARIABLE AREA VALVE MEANS.
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) | 1968-03-15 | 1968-09-14 | 1969-03-16 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-03-15 | 1972-09-14 | 1973-03-16 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-03-15 | 1976-09-14 | 1977-03-16 | $7700.00 | Window Closed / Lapsed |