US3886914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubricant metering system
Assignee: Ford Motor Co
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Filing: 1973-12-14
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Granted: 1975-06-03
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Expires: 1993-12-14
Abstract
Abstract A lubricant metering device for an engine having, in its presently preferred embodiment, a diaphragm mechanism for sensing fuel flow rate and a vacuum mechanism connected to the engine manifold for sensing engine load. The device introduces lubricant into the fuel line of the engine in proportion to the fuel flow rate and the engine load.
Inventors
- 👤 Daniel C Ahrns
- 👤 Jr Robert W Morrison
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:37
CPC Classifications
F; F01; F01M; F01M3/00; F01M3/02; F02; F02B; F02B75/00; F02B75/02; F02B2075/022; F02B2075/025
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
85 words
A lubricant metering system for an engine comprising: a fuel flow sensing means constructed to provide a signal proportional to engine fuel flow rate, a lubricant supply means constructed to provide a flow of lubricant under pressure, a lubricant metering device connected to said supply means and constructed to control the flow of lubricant from said supply means, said lubricant metering device being connected to said fuel flow sensing means and constructed to portion the output of said supply means in response to said signal.
Claim 2
Dependent Claim
85 words
A lubricant metering system for an engine comprising: a fuel flow sensing means constructed to provide a signal proportional to engine fuel flow rate, a lubricant supply means constructed to provide a flow of lubricant under pressure, a lubricant metering device connected to said supply means and constructed to control the flow of lubricant from said supply means, said lubricant metering device being connected to said fuel flow sensing means and constructed to portion the output of said supply means in response to said signal.
Claim 3
Dependent Claim
85 words
A lubricant metering system for an engine comprising: a fuel flow sensing means constructed to provide a signal proportional to engine fuel flow rate, a lubricant supply means constructed to provide a flow of lubricant under pressure, a lubricant metering device connected to said supply means and constructed to control the flow of lubricant from said supply means, said lubricant metering device being connected to said fuel flow sensing means and constructed to portion the output of said supply means in response to said signal.
Claim 4
Dependent Claim
85 words
A lubricant metering system for an engine comprising: a fuel flow sensing means constructed to provide a signal proportional to engine fuel flow rate, a lubricant supply means constructed to provide a flow of lubricant under pressure, a lubricant metering device connected to said supply means and constructed to control the flow of lubricant from said supply means, said lubricant metering device being connected to said fuel flow sensing means and constructed to portion the output of said supply means in response to said signal.
Claim 5
Dependent Claim
51 words
A lubricant metering system according to claim 1 and including: an engine fuel supply means constructed to supply a flow of fuel for said engine, said lubricant metering device having an outlet, means connected to outlet and to said fuel supply means and constructed to combine lubricant flow and fuel flow.
Claim 6
Dependent Claim
110 words
A lubricant metering system for an engine comprising: an engine load sensing means constructed to provide a signal proportional to engine load, a lubricant supply means constructed to provide a flow of lubricant under pressure, a lubricant metering device connected to said supply means and constructed to control the flow of lubricant from said supply means, said lubricant metering device being connected to said engine load sensing means and constructed to portion the output of said supply means in response to said signal, said engine load sensing means being connected to an engine manifold vacuum source and constructed to provide said signal in proportion to the engine manifold vacuum pressure.
Claim 7
Dependent Claim
110 words
A lubricant metering system for an engine comprising: an engine load sensing means constructed to provide a signal proportional to engine load, a lubricant supply means constructed to provide a flow of lubricant under pressure, a lubricant metering device connected to said supply means and constructed to control the flow of lubricant from said supply means, said lubricant metering device being connected to said engine load sensing means and constructed to portion the output of said supply means in response to said signal, said engine load sensing means being connected to an engine manifold vacuum source and constructed to provide said signal in proportion to the engine manifold vacuum pressure.
Claim 8
Dependent Claim
112 words
A lubricant metering system for an engine comprising: a fuel flow sensing means constructed to provide a first signal proportional to engine fuel flow rate, an engine load sensing means constructed to provide a second signal proportional to engine load, a lubricant supply means constructed to provide a flow of lubricant under pressure, a lubricant metering device connected to said supply means and constructed to control the flow of lubricant fluid from said supply means, said lubricant metering device being connected to said fuel flow sensing means and to said engine load sensing means and constructed to portion the output of said supply means in response to said first and second signals.
Claim 9
Dependent Claim
112 words
A lubricant metering system for an engine comprising: a fuel flow sensing means constructed to provide a first signal proportional to engine fuel flow rate, an engine load sensing means constructed to provide a second signal proportional to engine load, a lubricant supply means constructed to provide a flow of lubricant under pressure, a lubricant metering device connected to said supply means and constructed to control the flow of lubricant fluid from said supply means, said lubricant metering device being connected to said fuel flow sensing means and to said engine load sensing means and constructed to portion the output of said supply means in response to said first and second signals.
Claim 10
Dependent Claim
52 words
A lubricant metering system according to claim 4 and including: an engine fuel supply means constructed to supply a flow of fuel for said engine, said lubricant metering device having an outlet, means connected to said outlet and to said fuel supply means and constructed to combine lubricant flow and fuel flow.
Claim 11
Dependent Claim
37 words
A lubricant metering system according to claim 5 and including: said engine load sensing means being connected to an engine manifold vacuum source and constructed to provide said second signal in proportion to engine manifold vacuum pressure.
Claim 12
Dependent Claim
79 words
A lubricant metering system according to claim 4 and including: said engine load sensing means being connected to an engine manifold vacuum source and constructed to provide said second signal in proportion to engine manifold vacuum pressure, an engine fuel supply means constructed to provide a flow of fuel for said engine, said lubricant metering device having an outlet, means connected to said outlet and to said fuel supply means and constructed to combine lubricant flow and fuel flow.
Claim 13
Dependent Claim
165 words
A lubricant metering system for an engine comprising: a lubricant metering device having an inlet port, an outlet port and a pressure relief bypAss port, said inlet port being connected to a lubricant supply means constructed to provide a flow of lubricant under pressure, said bypass port being connected to a low pressure lubricant source, said outlet port being connected to an engine fuel supply means constructed to provide a flow of fuel for said engine, a fuel flow sensing means connected to said engine fuel supply means and constructed to provide a first signal proportional to fuel flow rate at said engine fuel supply means, an engine load sensing means constructed to provide a second signal proportional to engine load, said lubricant metering device being connected to said fuel flow sensing means and to said engine load sensing means and constructed to portion the flow of lubricant through said outlet port and through said bypass port in response to said first and second signals.
Claim 14
Dependent Claim
165 words
A lubricant metering system for an engine comprising: a lubricant metering device having an inlet port, an outlet port and a pressure relief bypAss port, said inlet port being connected to a lubricant supply means constructed to provide a flow of lubricant under pressure, said bypass port being connected to a low pressure lubricant source, said outlet port being connected to an engine fuel supply means constructed to provide a flow of fuel for said engine, a fuel flow sensing means connected to said engine fuel supply means and constructed to provide a first signal proportional to fuel flow rate at said engine fuel supply means, an engine load sensing means constructed to provide a second signal proportional to engine load, said lubricant metering device being connected to said fuel flow sensing means and to said engine load sensing means and constructed to portion the flow of lubricant through said outlet port and through said bypass port in response to said first and second signals.
Claim 15
Dependent Claim
37 words
A lubricant metering system according to claim 8 and including: said engine load sensing means being connected to an engine manifold vacuum source and constructed to provide said second signal in proportion to engine manifold vacuum pressure.
Claim 16
Dependent Claim
212 words
A lubricant metering system for an engine comprising: a lubricant metering device having housing with a central bore, a piston slidable in said bore and defining, in part, a lubricant metering chamber, said metering chamber having an inlet port, an outlet port and a pressure relief bypass port, a diaphragm disposed in said bore, a vacuum chamber situated between one side of said diaphragm and said piston, a fuel velocity pressure chamber situated on the other side of said diaphragm, said vacuum chamber being in communication with an engine manifold vacuum pressure source, a coil spring interposed between said diaphragm and said piston, an engine fuel line, communication means connecting said fuel velocity pressure chamber with said fuel line, said piston being displacable between first and second positions in said bore, said piston being constructed to seal said bypass port when in said first position and said piston being constructed to permit communication between said bypass port and said metering chamber when in said second position, said piston being urged from said first position to said second position in response to a vacuum in said vacuum chamber, said piston being urged from said second position to said first position in response to a fuel velocity pressure in said fuel velocity pressure chamber.
Claim 17
Dependent Claim
212 words
A lubricant metering system for an engine comprising: a lubricant metering device having housing with a central bore, a piston slidable in said bore and defining, in part, a lubricant metering chamber, said metering chamber having an inlet port, an outlet port and a pressure relief bypass port, a diaphragm disposed in said bore, a vacuum chamber situated between one side of said diaphragm and said piston, a fuel velocity pressure chamber situated on the other side of said diaphragm, said vacuum chamber being in communication with an engine manifold vacuum pressure source, a coil spring interposed between said diaphragm and said piston, an engine fuel line, communication means connecting said fuel velocity pressure chamber with said fuel line, said piston being displacable between first and second positions in said bore, said piston being constructed to seal said bypass port when in said first position and said piston being constructed to permit communication between said bypass port and said metering chamber when in said second position, said piston being urged from said first position to said second position in response to a vacuum in said vacuum chamber, said piston being urged from said second position to said first position in response to a fuel velocity pressure in said fuel velocity pressure chamber.
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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) | 1978-06-02 | 1978-12-02 | 1979-06-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-06-02 | 1982-12-02 | 1983-06-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-06-02 | 1986-12-02 | 1987-06-03 | $7700.00 | Window Closed / Lapsed |