US3593012A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Engine life recorder system using engine temperature and rpm data
Assignee: Simmonds Precision Products Inc
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Filing: 1969-01-17
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Granted: 1971-07-13
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Expires: 1989-01-17
Abstract
No abstract record available.
Inventors
- 👤 Walter T Lang
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 02:27
CPC Classifications
F; F01; F01M; F01M11/00; F01M11/10; G; G06; G06G; G06G7/00; G06G7/48; G06G7/64; G06J; G06J1/00; G07; G07C; G07C3/00; F16; F16N; F16N2260/00; F16N2260/02; F16N2260/16; H; H03; H03M; H03M1/00; H03M1/12; H03M1/60; H03M1/62
Claims Analysis
Total Claims: 10
Claim 1
Independent Claim
149 words
In an engine life recorder system, the combination comprising, a first and second signal conditioner means for receiving respectively an r.p.m. signal input and a temperature signal input, a summing circuit for receiving the respective outputs of said first and second signal conditioner means for providing an analog signal related to the instantaneous rate of engine life being used, said analog signal being fed to a digital log converter for converting said analog signal to a pulse train having a total pulse count proportional to the antilog of said analog instantaneous rate usage signal, a digital integrator circuit for receiving the variable count pulse train from said digital log converter means for supplying pulses at a reduced rate, a counter drive means for receiving said pulses from said integrator circuit, and a display counter connected to said counter drive means for accumulating a count indicating percentage engine life used.
Claim 2
Dependent Claim
149 words
In an engine life recorder system, the combination comprising, a first and second signal conditioner means for receiving respectively an r.p.m. signal input and a temperature signal input, a summing circuit for receiving the respective outputs of said first and second signal conditioner means for providing an analog signal related to the instantaneous rate of engine life being used, said analog signal being fed to a digital log converter for converting said analog signal to a pulse train having a total pulse count proportional to the antilog of said analog instantaneous rate usage signal, a digital integrator circuit for receiving the variable count pulse train from said digital log converter means for supplying pulses at a reduced rate, a counter drive means for receiving said pulses from said integrator circuit, and a display counter connected to said counter drive means for accumulating a count indicating percentage engine life used.
Claim 3
Dependent Claim
113 words
In an engine life recorder system, the combination comprising, a first and second signal conditioner means for receiving respectively an r.p.m. signal input and a temperature signal input, a summing circuit for receiving the outputs of said first and second signal conditioner means and having means for providing an analog signal related to the instantaneous rate of engine life being used, said analog signal being fed to a digital log converter and integrator circuit for converting said analog signal to a pulse train having a total pulse count proportional to the antilog of said analog instantaneous rate usage signal, and counter means connected to said pulse train for indicating percentage engine life used.
Claim 4
Dependent Claim
113 words
In an engine life recorder system, the combination comprising, a first and second signal conditioner means for receiving respectively an r.p.m. signal input and a temperature signal input, a summing circuit for receiving the outputs of said first and second signal conditioner means and having means for providing an analog signal related to the instantaneous rate of engine life being used, said analog signal being fed to a digital log converter and integrator circuit for converting said analog signal to a pulse train having a total pulse count proportional to the antilog of said analog instantaneous rate usage signal, and counter means connected to said pulse train for indicating percentage engine life used.
Claim 5
Dependent Claim
25 words
In an engine life recorder system according to claim 2, wherein thE log of said analog instantaneous rate usage signal is to the base 2.
Claim 6
Dependent Claim
25 words
In an engine life recorder system according to claim 2, wherein the log of said analog instantaneous rate usage signal is to the base 4.
Claim 7
Dependent Claim
129 words
In a recording system for engine life usage, the combination comprising, a first and second signal conditioner means for receiving respectively an r.p.m. signal input and a temperature signal input, a summing circuit for receiving the outputs of said first and second signal conditioner means for providing an analog signal related to the instantaneous rate of engine life being used, said analog signal being fed to a digital log converter for converting said analog signal to a variable count pulse train, a digital integrator means for receiving said pulse train for supplying pulses at a reduced rate, a counter drive means for receiving said pulses from said integrator means, and a display counter connected to said counter drive means for accumulating a count indicating percentage of engine life used.
Claim 8
Dependent Claim
129 words
In a recording system for engine life usage, the combination comprising, a first and second signal conditioner means for receiving respectively an r.p.m. signal input and a temperature signal input, a summing circuit for receiving the outputs of said first and second signal conditioner means for providing an analog signal related to the instantaneous rate of engine life being used, said analog signal being fed to a digital log converter for converting said analog signal to a variable count pulse train, a digital integrator means for receiving said pulse train for supplying pulses at a reduced rate, a counter drive means for receiving said pulses from said integrator means, and a display counter connected to said counter drive means for accumulating a count indicating percentage of engine life used.
Claim 9
Independent Claim
86 words
A method for recording engine life usage comprising the steps of: providing signals responsive to temperature and r.p.m. of an engine, summing said signals to provide an analog signal related to the instantaneous rate of engine life being used, converting said signal into a serial digital form having a total pulse count proportional to the antilog of said analog instantaneous rate usage signal, and integrating said serial pulse train by counting, whereby the total number of counts accumulated is directly proportional to percent engine life used.
Claim 10
Independent Claim
86 words
A method for recording engine life usage comprising the steps of: providing signals responsive to temperature and r.p.m. of an engine, summing said signals to provide an analog signal related to the instantaneous rate of engine life being used, converting said signal into a serial digital form having a total pulse count proportional to the antilog of said analog instantaneous rate usage signal, and integrating said serial pulse train by counting, whereby the total number of counts accumulated is directly proportional to percent engine life used.
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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) | 1974-07-12 | 1975-01-11 | 1975-07-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-07-12 | 1979-01-11 | 1979-07-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-07-12 | 1983-01-11 | 1983-07-13 | $7700.00 | Window Closed / Lapsed |