US3582247A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for detecting traces of heavy combustible gases and heating systems incorporating such apparatus
Assignee: Individual
•
Filing: 1969-06-16
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Granted: 1971-06-01
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Expires: 1989-06-16
Abstract
Abstract An arrangement for detecting traces of heavy combustible gases constituted by a gas burner fed with a combustible gas similar to that which is to be detected and with combustive air tapped out of the atmosphere to be detected, said burner being adjusted in a manner such that its flame is metastable and released and extinguished as soon as the contents of combustible gas in the air thus tapped off and thereby in the mixture fed into the burner rise up to a predetermined figure.
Inventors
- 👤 Bernard Faure
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 01:52
CPC Classifications
F; F23; F23Q; F23Q9/00; F23Q9/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
64 words
An apparatus as claimed in claim 1 wherein last-mentioned means include means collecting samples of air out of the area surrounding the apparatus, a channel connecting said collector with the external atmosphere and subjected to the draft produced by the burner flame, means through which said channel feeds the air from the collector into the burner to form the primary air for the latter.
Claim 2
Dependent Claim
137 words
An apparatus as claimed in claim 1 wherein last-mentioned means include means collecting samples of air out of the area surrounding the apparatus, a channel connecting said collector with the external atmosphere and subjected to the draft produced by the burner flame, means through which said channel feeds the air from the collector into the burner to form the primary air for the latter, an outer fluidtight chamber inserted in said channel in registry with the burner, means feeding combustible gas both into the pipe feeding the apparatus and into the means feeding the burner, a cock inserted in last-mentioned feeding means adapted to stop the feed of combustible fluid, a thermostat controlled by the burner flame and controlling the cock to make the latter stop the feed of combustible fluid upon extinction of the burner flame.
Claim 3
Dependent Claim
161 words
An apparatus as claimed in claim 1 wherein last-mentioned means include means collecting samples of air out of the area surrounding the apparatus, a channel connecting said collector with the external atmosphere and subjected to the draft produced by the burner flame, means through which said channel feeds the air from the collector into the burner to form the primary air for the latter, an outer fluidtight chamber inserted in said channel in registry with the burner, means feeding combustible gas both into the pipe feeding the apparatus and into the means feeding the burner, a cock inserted in last-mentioned means adapted to stop the feed of combustible fluid, a thermostat controlled by the burner flame and controlling the cock to make the latter stop the feed of combustible fluid upon extinction of the burner flame and an inner antideflagrating chamber surrounding the burner inside the outer chamber and through which the burner receives its secondary air from the outer atmosphere.
Claim 4
Dependent Claim
168 words
An apparatus a as claimed in claim 1 adapted to be inserted between a tank carrying the combustible fluid and located outside the premises housing the apparatus and the pipe feeding the latter, wherein last-mentioned means include means collecting samples of air out of the area surrounding the apparatus, a channel connecting said collector with the external atmospheric and subjected to the draft produced by the burner flame, means through which said channel feeds the air from the collector into the burner to form the primary air for the latter, an outer fluidtight chamber inserted in said channel in registry with the burner, means feeding combustible gas both into the pipe feeding the apparatus and into the means feeding the burner, a cock inserted in last-mentioned feeding means, fed by the tank and adapted to stop the feed of combustible fluid, a thermostat controlled by the burner flame and controlling the cock to make the latter stop the feed of combustible fluid upon extinction of the burner flame.
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) | 1974-05-31 | 1974-11-30 | 1975-06-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-05-31 | 1978-11-30 | 1979-06-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-05-31 | 1982-11-30 | 1983-06-01 | $7700.00 | Window Closed / Lapsed |