US3748083A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Ignition failure shutdown apparatus
Assignee: Sioux Steam Cleaner Corp
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Filing: 1972-03-10
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Granted: 1973-07-24
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Expires: 1992-03-10
Abstract
Abstract A burner for burning combustible fuel, such as fuel oil, having a continuous electrical spark ignition device, and further including a light conducting tube for receiving light from the spark ignition device, while excluding light from the burning fuel, and conducting the light to an ultraviolet detector which controls a valve to allow fuel to pass to the burner only when the ignition device is operating.
Inventors
- 👤 J Finger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 22:12
CPC Classifications
F; F23; F23Q; F23Q3/00; F23N; F23N2239/00; F23N2239/06
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
180 words
Ignition failure shutdown apparatus comprising: a. a combustible fluid burner adapted to be connected to a source of combustible fluid and including a nozzle; b. electrical ignition means mounted adjacent said burner nozzle for producing a substantially continuous spark to ignite combustible fluid discharged from said nozzle; c. light sensing means including an ultraviolet detector mounted to receive light from said continuous spark and providing an output signal in response to the light from said continuous spark; d. valve means connected to receive the output signal from said light sensing means and operatively mounted to control the flow of combustible fluid from the source to said burner in response to the output signal; and e. an elongated tube having an inlet opening directed toward the continuous spark and in a direction away from the ignited combustible fluid, said tube being arranged to substantially shield said light sensing means from light of ignited combustible fluid and other than that emanating from said continuous spark, said tube having means therein for directing light from said continuous spark toward said light sensing means.
Claim 2
Dependent Claim
180 words
Ignition failure shutdown apparatus comprising: a. a combustible fluid burner adapted to be connected to a source of combustible fluid and including a nozzle; b. electrical ignition means mounted adjacent said burner nozzle for producing a substantially continuous spark to ignite combustible fluid discharged from said nozzle; c. light sensing means including an ultraviolet detector mounted to receive light from said continuous spark and providing an output signal in response to the light from said continuous spark; d. valve means connected to receive the output signal from said light sensing means and operatively mounted to control the flow of combustible fluid from the source to said burner in response to the output signal; and e. an elongated tube having an inlet opening directed toward the continuous spark and in a direction away from the ignited combustible fluid, said tube being arranged to substantially shield said light sensing means from light of ignited combustible fluid and other than that emanating from said continuous spark, said tube having means therein for directing light from said continuous spark toward said light sensing means.
Claim 3
Dependent Claim
129 words
For a combustible fluid burner having a fluid discharge nozzle and a continuous spark ignition system emitting ultraviolet light adjacent said nozzle, ignition failure shutdown apparatus comprising: a. an elongated tube of opaque material attachable adjacent said burner and having an opening at one end directed toward the continuous spark and disposed to exclude light from ignited combustible fluid; b. ultraviolet light sensing means at the other end of said tube for receiving substantially only the light from said continuous spark, said light sensing means providing an output signal responsive to light received from said spark ignition; and c. valve means connected to receive the out-put signal from the light sensing means and adapted to control the flow of fluid to the burner in response to the output signal.
Claim 4
Dependent Claim
129 words
For a combustible fluid burner having a fluid discharge nozzle and a continuous spark ignition system emitting ultraviolet light adjacent said nozzle, ignition failure shutdown apparatus comprising: a. an elongated tube of opaque material attachable adjacent said burner and having an opening at one end directed toward the continuous spark and disposed to exclude light from ignited combustible fluid; b. ultraviolet light sensing means at the other end of said tube for receiving substantially only the light from said continuous spark, said light sensing means providing an output signal responsive to light received from said spark ignition; and c. valve means connected to receive the out-put signal from the light sensing means and adapted to control the flow of fluid to the burner in response to the output signal.
Claim 5
Dependent Claim
31 words
The apparatus defined in claim 1 in which said opening is disposed so that the line of sight axially therethrough is generally perpendicular to the direction of propagation of said spark.
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) | 1976-07-23 | 1977-01-22 | 1977-07-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-07-23 | 1981-01-22 | 1981-07-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-07-23 | 1985-01-22 | 1985-07-24 | $7700.00 | Window Closed / Lapsed |