Patent US3977427A successfully refreshed from Google Patents.
US3977427A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Control of the viscosity of fuel oil for burners
Assignee: KGI Inc
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Filing: 1975-09-18
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Granted: 1976-08-31
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Expires: 1995-09-18
Abstract
Abstract An apparatus for the control of the viscosity of fuel oil supplied to burners, which comprises, in series, pump means for supplying the fuel oil to the burner system under a selected pressure, means for heating the fuel oil output of the pump means, strainer means and control valve means and orifice means of selected length and diameter. A differential pressure cell monitors the pressure drop across the orifice due to the flow of fuel oil under a selected pressure set by the control valve. Any variations in differential pressure will be due to corresponding inverse variations of viscosity. The variations in the output of the differential pressure cell are communicated to a valve means which controls the amount of steam passing into the heating means, thus controlling the temperature of the fuel oil, and therefore its viscosity, to a proper value.
Inventors
- 👤 Robert D. Reed
- 👤 Harold F. Koons
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 22:24
CPC Classifications
G; G05; G05D; G05D24/00; F; F23; F23K; F23K5/00; F23K5/02; F23K5/14; F23K5/20; F23N; F23N1/00; F23N1/007; Y; Y10; Y10T; Y10T137/00; Y10T137/0318; Y10T137/0391; Y10T137/6416
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
133 words
Apparatus for the control of the viscosity of fuel oil supplied to burners comprising: a. pump means for supplying liquid fuel to a burner system under a selected pressure; b. liquid fuel heating means through which the pressurized fuel is passed; c. means to control the heating of said fuel, whereby the temperature of said fuel is selectively increased or decreased; d. at the outlet of said fuel heating means, means to deliver fuel to a burner means; e. at the outlet of said fuel heating means, bypass valve means to control the bypass of liquid fuel through an orifice of selected length and diameter; f. differential pressure cell means connected across said orifice, and means responsive to the measured differential pressure to control said means to control the heating of said fuel.
Claim 2
Dependent Claim
133 words
Apparatus for the control of the viscosity of fuel oil supplied to burners comprising: a. pump means for supplying liquid fuel to a burner system under a selected pressure; b. liquid fuel heating means through which the pressurized fuel is passed; c. means to control the heating of said fuel, whereby the temperature of said fuel is selectively increased or decreased; d. at the outlet of said fuel heating means, means to deliver fuel to a burner means; e. at the outlet of said fuel heating means, bypass valve means to control the bypass of liquid fuel through an orifice of selected length and diameter; f. differential pressure cell means connected across said orifice, and means responsive to the measured differential pressure to control said means to control the heating of said fuel.
Claim 3
Dependent Claim
14 words
The apparatus as in claim 1 in which said liquid fuel is fuel oil.
Claim 4
Dependent Claim
18 words
The apparatus as in claim 1 in which said liquid fuel heating means is a fluid heat media.
Claim 5
Dependent Claim
14 words
The apparatus as in claim 3 in which said fluid heat media is steam.
Claim 6
Dependent Claim
33 words
The apparatus as in claim 1 in which said means to control the heating of said fuel comprises remote control valve means to control the flow of steam to said fuel heating means.
Claim 7
Dependent Claim
19 words
The apparatus as in claim 1 including strainer means in the line supplying fuel to said bypass valve means.
Claim 8
Dependent Claim
30 words
The apparatus as in claim 5, including pilot control means responsive to the indication of said differential pressure cell means, said remote control valve means responsive to said pilot means.
Claim 9
Dependent Claim
40 words
The apparatus as in claim 1 including flow bypass means around said pump means, and means to control the flow of fuel through said bypass means, so as to maintain a selected pressure at the outlet of said pump means.
References Cited (Backward Citations)
US3277916A
Cited
US3424191A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-08-31 | 1980-03-01 | 1980-08-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-08-31 | 1984-03-01 | 1984-08-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-08-31 | 1988-03-01 | 1988-08-31 | $7700.00 | Window Closed / Lapsed |