Patent US4079623A successfully refreshed from Google Patents.
US4079623A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel measuring system for engines
Assignee: Individual
•
Filing: 1976-04-12
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Granted: 1978-03-21
•
Expires: 1996-04-12
Abstract
Abstract A volumetric measuring device arranged for use with a fuel system for engines of the type which return unburned fuel. The measuring device has a movable measuring member. An electric sensor in an electric circuit senses movement of the movable member. Indicating or recording devices, or both, are responsive to the electric sensor to indicate and record fuel flow through the measuring device. One system of the invention utilizes two measuring devices to provide a differential in output of the electric sensors for accurate measurement. Structure for treatment of the fuel may be employed with the system for cooling, removing bubbles, or the like. An alternative structure for sensing movements of the movable member comprises a magnetic pickup. Another concept of the invention conducts fuel from the measuring device, which may or may not be volumetric, to the engine in bypassing relation to the structure for treating the fuel. In further concepts of the invention, the movable member of the measuring device is operated by the simultaneous admission and discharge of fuel, and the measuring device is connected prior to the combining of the recirculated fuel and a fuel supply for the engine.
Inventors
- 👤 Curtis L. Erwin, Jr.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:43
CPC Classifications
G; G01; G01F; G01F9/00; G01F9/02; G01F9/023; G01F3/00; G01F3/02; G01F3/04; G01F3/14; G01F3/16
Claims Analysis
Total Claims: 52
Claim 1
Independent Claim
184 words
A fuel measuring system arranged for use with an engine of the type having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to return fuel back to the fuel supply means, said fuel measuring system comprising volumetric measuring means having means for connection in the fuel supply means of an engine and arranged to measure fuel supplied to the engine, volumetric measuring means having means for connection in a return line of an engine and arranged to measure return fuel flow in the return line, each of said measuring means having a movable member arranged to be operated by the flow of fuel, an electric circuit, electric sensor means in said circuit for each measuring means sensing movements of said movable members, each of said sensor means having a fuel flow measurement output, means responsive to said two sensor means outputs determining an output which comprises the differential in output of said two measuring means, and indicating means totalizing said differential of fuel flowing through said measuring means.
Claim 2
Dependent Claim
184 words
A fuel measuring system arranged for use with an engine of the type having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to return fuel back to the fuel supply means, said fuel measuring system comprising volumetric measuring means having means for connection in the fuel supply means of an engine and arranged to measure fuel supplied to the engine, volumetric measuring means having means for connection in a return line of an engine and arranged to measure return fuel flow in the return line, each of said measuring means having a movable member arranged to be operated by the flow of fuel, an electric circuit, electric sensor means in said circuit for each measuring means sensing movements of said movable members, each of said sensor means having a fuel flow measurement output, means responsive to said two sensor means outputs determining an output which comprises the differential in output of said two measuring means, and indicating means totalizing said differential of fuel flowing through said measuring means.
Claim 3
Dependent Claim
28 words
The fuel measuring system of claim 1 including bubble removing means having means for connection in at least one of the fuel supply means and the return line.
Claim 4
Dependent Claim
17 words
The fuel measuring system of claim 1 wherein said electric sensor means comprises magnetically responsive sensor means.
Claim 5
Dependent Claim
184 words
A fuel measuring system arranged for use with an engine of the type having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to return fuel back to the fuel supply means, said fuel measuring system comprising volumetric measuring means having means for connection in the fuel supply means of an engine and arranged to measure fuel supplied to the engine, volumetric measuring means having means for connection in a return line of an engine and arranged to measure return fuel flow in the return line, each of said measuring means having a movable member arranged to be operated by the flow of fuel, an electric circuit, electric sensor means in said circuit for each measuring means sensing movements of said movable members, each of said sensor means having a fuel flow measurement output, means responsive to said two sensor means outputs determining an output which comprises the differential in output of said two measuring means, and recording means recording said differential of fuel flowing through said measuring means.
Claim 6
Dependent Claim
184 words
A fuel measuring system arranged for use with an engine of the type having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to return fuel back to the fuel supply means, said fuel measuring system comprising volumetric measuring means having means for connection in the fuel supply means of an engine and arranged to measure fuel supplied to the engine, volumetric measuring means having means for connection in a return line of an engine and arranged to measure return fuel flow in the return line, each of said measuring means having a movable member arranged to be operated by the flow of fuel, an electric circuit, electric sensor means in said circuit for each measuring means sensing movements of said movable members, each of said sensor means having a fuel flow measurement output, means responsive to said two sensor means outputs determining an output which comprises the differential in output of said two measuring means, and recording means recording said differential of fuel flowing through said measuring means.
Claim 7
Dependent Claim
28 words
The fuel measuring system of claim 1 including bubble removing means having means for connection in at least one of the fuel supply means and the return line.
Claim 8
Dependent Claim
17 words
The fuel measuring system of claim 4 wherein said electric sensor means comprises magnetically responsive sensor means.
Claim 9
Dependent Claim
186 words
A fuel measuring system arranged for use with an engine of the type having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine to return fuel back to the fuel supply means, said fuel measuring system comprising volumetric measuring means having means for connection in the fuel supply means of an engine and arranged to measure fuel supplied to the engine, volumetic measuring means having means for connection in a return line of an engine and arranged to measure return fuel flow in the return line, each of said measuring means having a movable member arranged to be operated by the flow of fuel, an electric circuit, electric sensor means in said circuit for each measuring means sensing movements of said movable members, each of said sensor means having a fuel flow measurement output, means responsive to said two sensor means outputs determining an output which comprises the differential in output of said two measuring means, and indicating means indicating the rate of said differential of fuel flowing through said measuring means.
Claim 10
Dependent Claim
186 words
A fuel measuring system arranged for use with an engine of the type having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine to return fuel back to the fuel supply means, said fuel measuring system comprising volumetric measuring means having means for connection in the fuel supply means of an engine and arranged to measure fuel supplied to the engine, volumetic measuring means having means for connection in a return line of an engine and arranged to measure return fuel flow in the return line, each of said measuring means having a movable member arranged to be operated by the flow of fuel, an electric circuit, electric sensor means in said circuit for each measuring means sensing movements of said movable members, each of said sensor means having a fuel flow measurement output, means responsive to said two sensor means outputs determining an output which comprises the differential in output of said two measuring means, and indicating means indicating the rate of said differential of fuel flowing through said measuring means.
Claim 11
Dependent Claim
28 words
The fuel measuring system of claim 7 including bubble removing means having means for connection in at least one of the fuel supply means and the return line.
Claim 12
Dependent Claim
17 words
The fuel measuring system of claim 7 wherein said electric sensor means comprises magnetically responsive sensor means.
Claim 13
Dependent Claim
187 words
A fuel measuring system arranged for use with an engine of the type having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to return fuel back to the fuel supply means, said fuel measuring system comprising volumetric measuring means having means for connection in the fuel supply means of an engine and arranged to measure fuel supplied to the engine, volumetric measuring means having means for connection in a return line of an engine and arranged to measure return fuel flow in the return line, each of said measuring means having a movable member arranged to be operated by the flow of fuel, an electric circuit, electric sensor means in said circuit for each measuring means sensing movements of said movable members, each of said sensor means having a fuel flow measurement output, means responsive to said two sensor means outputs determining an output which comprises the differential in output of said two measuring means, and recording means recording the rate of said differential of fuel flowing through said measuring means.
Claim 14
Dependent Claim
187 words
A fuel measuring system arranged for use with an engine of the type having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to return fuel back to the fuel supply means, said fuel measuring system comprising volumetric measuring means having means for connection in the fuel supply means of an engine and arranged to measure fuel supplied to the engine, volumetric measuring means having means for connection in a return line of an engine and arranged to measure return fuel flow in the return line, each of said measuring means having a movable member arranged to be operated by the flow of fuel, an electric circuit, electric sensor means in said circuit for each measuring means sensing movements of said movable members, each of said sensor means having a fuel flow measurement output, means responsive to said two sensor means outputs determining an output which comprises the differential in output of said two measuring means, and recording means recording the rate of said differential of fuel flowing through said measuring means.
Claim 15
Dependent Claim
28 words
The fuel measuring system of claim 10 including bubble removing means having means for connection in at least one of the full supply means and the return line.
Claim 16
Dependent Claim
17 words
The fuel measuring system of claim 10 wherein said electric sensor means comprises magnetically responsive sensor means.
Claim 17
Dependent Claim
128 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising volumetric measuring means having a measuring member operated by the simultaneous admission and discharge of fuel, said measuring means having means for connection prior to the combining of the recirculated fuel and the fuel supply means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, indicating means responsive to said sensor means totalizing the amount of fuel flowing through said measuring means, and cooling means having means for connection in said fuel measuring system.
Claim 18
Dependent Claim
128 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising volumetric measuring means having a measuring member operated by the simultaneous admission and discharge of fuel, said measuring means having means for connection prior to the combining of the recirculated fuel and the fuel supply means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, indicating means responsive to said sensor means totalizing the amount of fuel flowing through said measuring means, and cooling means having means for connection in said fuel measuring system.
Claim 19
Dependent Claim
17 words
The fuel measuring system of claim 13 wherein said electric sensor means comprises magnetically responsive sensor means.
Claim 20
Dependent Claim
129 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising volumetric measuring means having a movable measuring member operated by the simultaneous admission and discharge of fuel, said measuring means having means for connection prior to the combining of the recirculated fuel and the fuel supply means, an circuit, electric sensor means in said circuit sensing movements of said movable member, indicating means responsive to said sensor means totalizing the amount of fuel flowing through said measuring means, and bubble removing means having means for connection in said fuel measuring system.
Claim 21
Dependent Claim
129 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising volumetric measuring means having a movable measuring member operated by the simultaneous admission and discharge of fuel, said measuring means having means for connection prior to the combining of the recirculated fuel and the fuel supply means, an circuit, electric sensor means in said circuit sensing movements of said movable member, indicating means responsive to said sensor means totalizing the amount of fuel flowing through said measuring means, and bubble removing means having means for connection in said fuel measuring system.
Claim 22
Dependent Claim
17 words
The fuel measuring system of claim 15 wherein said electric sensor means comprises magnetically responsive sensor means.
Claim 23
Dependent Claim
131 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto to is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising volumetric measuring means having a movable measuring member operated by the simultaneous admission and discharge of fuel, said measuring means having means for connection prior to the combining of the recirculated fuel and the fuel supply means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, recording means responsive to said sensor means recording to totalized amount of fuel flowing through said measuring means, and cooling means having means for connection in said fuel measuring system.
Claim 24
Dependent Claim
131 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto to is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising volumetric measuring means having a movable measuring member operated by the simultaneous admission and discharge of fuel, said measuring means having means for connection prior to the combining of the recirculated fuel and the fuel supply means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, recording means responsive to said sensor means recording to totalized amount of fuel flowing through said measuring means, and cooling means having means for connection in said fuel measuring system.
Claim 25
Dependent Claim
17 words
The fuel measuring system of claim 17 wherein said electric sensor means comprises magnetically responsive sensor means.
Claim 26
Dependent Claim
131 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising volumetric measuring means having a movable measuring member operated by the simultaneous admission and discharge of fuel, said measuring means having means for connection prior to the combining of the recirculated fuel and the fuel supply means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, recording means responsive to said sensor means recording a totalized amount of fuel flowing through said measuring means, and bubble removing means having means for connection in said fuel measuring system.
Claim 27
Dependent Claim
131 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising volumetric measuring means having a movable measuring member operated by the simultaneous admission and discharge of fuel, said measuring means having means for connection prior to the combining of the recirculated fuel and the fuel supply means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, recording means responsive to said sensor means recording a totalized amount of fuel flowing through said measuring means, and bubble removing means having means for connection in said fuel measuring system.
Claim 28
Dependent Claim
17 words
The fuel measuring system of claim 19 wherein said electric sensor means comprises magnetically responsive sensor means.
Claim 29
Dependent Claim
129 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising volumetric measuring means having a movable measuring member operated by the simultaneous admission and discharge of fuel, said measuring means having means for connection prior to the combining of the recirculated fuel and the fuel supply means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, indicating means responsive to said sensor means indicating the rate of fuel flowing through said measuring means, and cooling means having means for connection in said fuel measuring system.
Claim 30
Dependent Claim
129 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising volumetric measuring means having a movable measuring member operated by the simultaneous admission and discharge of fuel, said measuring means having means for connection prior to the combining of the recirculated fuel and the fuel supply means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, indicating means responsive to said sensor means indicating the rate of fuel flowing through said measuring means, and cooling means having means for connection in said fuel measuring system.
Claim 31
Dependent Claim
17 words
The fuel measuring system of claim 21 wherein said electric sensor means comprises magnetically responsive sensor means.
Claim 32
Dependent Claim
130 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising volumetric measuring means having a movable measuring member operated by the simultaneous admission and discharge of fuel, said measuring means having means for connection prior to the combining of the recirculated fuel and the fuel supply means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, indicating means responsive to said sensor means indicating the rate of fuel flowing through said measuring means, and bubble removing means having means for connection in said fuel measuring system.
Claim 33
Dependent Claim
130 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising volumetric measuring means having a movable measuring member operated by the simultaneous admission and discharge of fuel, said measuring means having means for connection prior to the combining of the recirculated fuel and the fuel supply means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, indicating means responsive to said sensor means indicating the rate of fuel flowing through said measuring means, and bubble removing means having means for connection in said fuel measuring system.
Claim 34
Dependent Claim
17 words
The fuel measuring system of claim 23 wherein said electric sensor means comprises magnetically responsive sensor means.
Claim 35
Dependent Claim
129 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising volumetric measuring means having a movable measuring member operated by the simultaneous admission and discharge of fuel, said measuring means having means for connection prior to the combining of the recirculated fuel and the fuel supply means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, recording means responsive to said sensor means recording to rate of fuel flowing through said measuring means, and cooling means having means for connection in said fuel measuring system.
Claim 36
Dependent Claim
129 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising volumetric measuring means having a movable measuring member operated by the simultaneous admission and discharge of fuel, said measuring means having means for connection prior to the combining of the recirculated fuel and the fuel supply means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, recording means responsive to said sensor means recording to rate of fuel flowing through said measuring means, and cooling means having means for connection in said fuel measuring system.
Claim 37
Dependent Claim
17 words
The fuel measuring system of claim 25 wherein said electric sensor means comprises magnetically responsive sensor means.
Claim 38
Dependent Claim
130 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising volumetric measuring means having a movable measuring member operated by the simultaneous admission and discharge of fuel, said measuring means having means for connection prior to the combining of the recirculated fuel and the fuel supply means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, recording means responsive to said sensor means recording the rate of fuel flowing through said measuring means, and bubble removing means having means for connection in said fuel measuring system.
Claim 39
Dependent Claim
130 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising volumetric measuring means having a movable measuring member operated by the simultaneous admission and discharge of fuel, said measuring means having means for connection prior to the combining of the recirculated fuel and the fuel supply means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, recording means responsive to said sensor means recording the rate of fuel flowing through said measuring means, and bubble removing means having means for connection in said fuel measuring system.
Claim 40
Dependent Claim
17 words
The fuel measuring system of claim 27 wherein said electric sensor means comprises magnetically responsive sensor means.
Claim 41
Dependent Claim
118 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising treatment means having means for connection in said fuel measuring system, measuring means having a movable member, fuel line means for conducting fuel from said measuring means to the engine in bypassing relation to said treatment means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, and indicating means responsive to said sensor means totalizing the amount of fuel flowing through said measuring means.
Claim 42
Dependent Claim
118 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising treatment means having means for connection in said fuel measuring system, measuring means having a movable member, fuel line means for conducting fuel from said measuring means to the engine in bypassing relation to said treatment means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, and indicating means responsive to said sensor means totalizing the amount of fuel flowing through said measuring means.
Claim 43
Dependent Claim
17 words
The fuel measuring system of claim 29 wherein said electric sensor means comprises magnetically responsive sensor means.
Claim 44
Dependent Claim
119 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising treatment means having means for connection in said fuel measuring system, measuring means having a movable member, fuel line means for conducting fuel from said measuring means to the engine in bypassing relation to said treatment means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, and recording means responsive to said sensor means recording a totalized amount of fuel flowing through said measuring means.
Claim 45
Dependent Claim
119 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising treatment means having means for connection in said fuel measuring system, measuring means having a movable member, fuel line means for conducting fuel from said measuring means to the engine in bypassing relation to said treatment means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, and recording means responsive to said sensor means recording a totalized amount of fuel flowing through said measuring means.
Claim 46
Dependent Claim
17 words
The fuel measuring system of claim 31 wherein said electric sensor means comprises magnetically responsive sensor means.
Claim 47
Dependent Claim
118 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising treatment means having means for connection in said fuel measuring system, measuring means having a movable member, fuel line means for conducting fuel from said measuring means to the engine in bypassing relation to said treatment means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, and indicating means responsive to said sensor means indicating the rate of fuel flowing through said measuring means.
Claim 48
Dependent Claim
118 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising treatment means having means for connection in said fuel measuring system, measuring means having a movable member, fuel line means for conducting fuel from said measuring means to the engine in bypassing relation to said treatment means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, and indicating means responsive to said sensor means indicating the rate of fuel flowing through said measuring means.
Claim 49
Dependent Claim
17 words
The fuel measuring system of claim 33 wherein said electric sensor means comprises magnetically responsive sensor means.
Claim 50
Dependent Claim
118 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising treatment means having means for connection in said fuel measuring system, measuring means having a movable member, fuel line means for conducting fuel from said measuring means to the engine in bypassing relation to said treatment means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, and recording means responsive to said sensor means recording the rate of fuel flowing through said measuring means.
Claim 51
Dependent Claim
118 words
A fuel measuring system arranged for use with an engine having fuel supply means and in which a portion of the fuel fed thereto is unburned and including a return line from the engine arranged to recirculate unburned fuel back to the engine, said fuel measuring system comprising treatment means having means for connection in said fuel measuring system, measuring means having a movable member, fuel line means for conducting fuel from said measuring means to the engine in bypassing relation to said treatment means, an electric circuit, electric sensor means in said circuit sensing movements of said movable member, and recording means responsive to said sensor means recording the rate of fuel flowing through said measuring means.
Claim 52
Dependent Claim
17 words
The fuel measuring system of claim 35 wherein said electric sensor means comprises magnetically responsive sensor means.
References Cited (Backward Citations)
US3729996A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-20 | 1981-09-19 | 1982-03-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-20 | 1985-09-19 | 1986-03-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-20 | 1989-09-19 | 1990-03-21 | $7700.00 | Window Closed / Lapsed |