US3984826A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Condition detector, especially for detecting atmospheric conditions
Assignee: Individual
•
Filing: 1975-02-28
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Granted: 1976-10-05
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Expires: 1995-02-28
Abstract
Abstract In a condition detector for detecting conditions in more than a single region, a pilot flame is established by a controlled supply of fuel to a burner at the bottom of a vertically elongate chimney. The chimney is closed at the bottom and combustion air for the flame enters the top of the chimney and flows downwardly therein. The flame is extinguished, or diminished, when combustion products or gases other than oxygen enter the upper end of the chimney and reduce the supply of oxygen to the flame. A flame detecting switch device adjacent the pilot flame burner, is actuated in response to extinguishing, or diminishing of the flame and may be connected to cause a signal, such as an alarm, to be actuated. The detector is mounted in an enclosure and ducts lead from the enclosure to regions which are to be monitored by the detector whereby the gases from the regions influence the detector.
Inventors
- 👤 Stanley J. Kowalsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 17:50
CPC Classifications
G; G08; G08B; G08B17/00; G08B17/10; G08B17/117
Claims Analysis
Total Claims: 13
Claim 1
Independent Claim
178 words
In a device for monitoring atmospheric conditions and operable for detecting oxygen deficiency therein; an imperforate horizontal base, a burner on the base and means to supply fuel to the burner which will burn in air and develop a flame, temperature sensitive means on the base adjacent the burner and actuated in response to diminution of the burner flame, an imperforate vertically elongate chimney open at the ends and having a height which is about four or five times the smallest diameter thereof and sealingly mounted on said base in surrounding relation to said burner and temperature sensitive means, combustion air for the burner flowing downwardly in the chimney from the upper end to the lower end while the gaseous products of combustion from said flame flow upwardly in the chimney from the lower end to the upper end in counter-flow to the combustion air, an enclosure in which said device is mounted, and ducts opening at one end into the enclosure and at the other end into respective regions of a building such as a residence building.
Claim 2
Dependent Claim
178 words
In a device for monitoring atmospheric conditions and operable for detecting oxygen deficiency therein; an imperforate horizontal base, a burner on the base and means to supply fuel to the burner which will burn in air and develop a flame, temperature sensitive means on the base adjacent the burner and actuated in response to diminution of the burner flame, an imperforate vertically elongate chimney open at the ends and having a height which is about four or five times the smallest diameter thereof and sealingly mounted on said base in surrounding relation to said burner and temperature sensitive means, combustion air for the burner flowing downwardly in the chimney from the upper end to the lower end while the gaseous products of combustion from said flame flow upwardly in the chimney from the lower end to the upper end in counter-flow to the combustion air, an enclosure in which said device is mounted, and ducts opening at one end into the enclosure and at the other end into respective regions of a building such as a residence building.
Claim 3
Dependent Claim
25 words
A device according to claim 1 in which said chimney is smaller in diameter at the upper end than it is at the lower end.
Claim 4
Dependent Claim
30 words
A device according to claim 1 which includes means receivable by the chimney near the upper end thereof for adjusting the effective diameter of the upper end of the chimney.
Claim 5
Dependent Claim
30 words
A device according to claim 2 which includes means receivable by the chimney near the upper end thereof for adjusting the effective diameter of the upper end of the chimney.
Claim 6
Dependent Claim
65 words
A device according to claim 1 which includes a member detachably mounted on the upper end of said chimney and having an aperture therein smaller in diameter than the upper end of the chimney for adjustment of the effective area of the upper end of the chimney for the passage of combustion air to the burner and the gaseous products of combustion from the burner.
Claim 7
Dependent Claim
68 words
A device according to claim 1 which includes a cup receivable out the upper end of the chimney and having a central aperture in the bottom wall, and mask elements movably mounted on the cup member and adjustable thereon for variably restricting said aperture thereby to control the effective area for the passage of combustion air to the burner and the gaseous products of combustion from the burner.
Claim 8
Dependent Claim
26 words
A device according to claim 1 in which said building has separate rooms and respective regions of said building comprise the separate rooms of the building.
Claim 9
Dependent Claim
30 words
A device according to claim 7 in which said enclosure is mounted above said rooms and the said ducts lead from upper levels of the respective rooms into said enclosure.
Claim 10
Dependent Claim
45 words
A device according to claim 7 in which said building has an attic and said enclosure is mounted in the attic and the said ducts lead from upper levels of the respective rooms upwardly into the said attic of the building and into said enclosure.
Claim 11
Dependent Claim
23 words
A device according to claim 9 in which said enclosure includes a vent located over the top of the chimney of the device.
Claim 12
Dependent Claim
24 words
A device according to claim 7 in which said enclosure is an attic space in the building above the said rooms of the building.
Claim 13
Dependent Claim
20 words
A device according to claim 10 in which said device is mounted near the highest part of the attic space.
References Cited (Backward Citations)
US2699538A
Cited
US3896422A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1979-10-05 | 1980-04-05 | 1980-10-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1983-10-05 | 1984-04-05 | 1984-10-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1987-10-05 | 1988-04-05 | 1988-10-05 | $7700.00 | Window Closed / Lapsed |