US3636853A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Exhaust stack for outdoor heaters
Assignee: Anthony Industries Inc
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Filing: 1970-03-06
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Granted: 1972-01-25
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Expires: 1990-03-06
Abstract
Abstract Exhaust stack for an outdoor heater including a vent pipe terminating in an upwardly directed open end having annular wind openings in the wall of the vent pipe which are positioned adjacent to its open end. Downwardly directed wind deflectors are positioned outwardly of and extending over the wind openings and spacer elements are positioned within the vent pipe adjacent its open upper end which divide the vent pipe into four substantially pie-shaped quarter sections, the spacer elements extending downwardly in the vent pipe past the wind openings. The upper surfaces of the spacer elements are inclined upwardly toward the center of the vent pipe and a wire mesh screen is positioned in contact with the upper surfaces of the spacer elements to form an upper surface for the vent pipe having a generally conical configuration.
Inventors
- 👤 Chester A Sable
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 02:16
CPC Classifications
F; F23; F23L; F23L17/00; F23L17/02
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
178 words
An exhaust stack for an outdoor heater comprising: a vent pipe terminating in an upwardly directed open end; annular wind openings in said vent pipe positioned adjacent said open end; downwardly directed wind deflectors positioned outwardly of and extending over said wind openings; spacer elements positioned at the upper open end of said vent pipe and dividing said vent pipe into four substantially pieshaped quarter sections, said spacer elements extending downwardly past said wind openings; the upper surfaces of said spacer elements being inclined upwardly at an angle toward the center of said vent pipe, and a wire mesh screen positioned in contact with the upper surfaces of said spacer elements to form an upper surface having a generally conical configuration, whereby wind entering said wind openings is deflected upwardly by said wind deflectors, after which it may contact said spacer elements which tend to combine the effect of the wind to the one or more substantially pie-shaped quarter sections within said vent pipe which communicate respectively with the one or more openings through which the wind enterS.
Claim 2
Dependent Claim
178 words
An exhaust stack for an outdoor heater comprising: a vent pipe terminating in an upwardly directed open end; annular wind openings in said vent pipe positioned adjacent said open end; downwardly directed wind deflectors positioned outwardly of and extending over said wind openings; spacer elements positioned at the upper open end of said vent pipe and dividing said vent pipe into four substantially pieshaped quarter sections, said spacer elements extending downwardly past said wind openings; the upper surfaces of said spacer elements being inclined upwardly at an angle toward the center of said vent pipe, and a wire mesh screen positioned in contact with the upper surfaces of said spacer elements to form an upper surface having a generally conical configuration, whereby wind entering said wind openings is deflected upwardly by said wind deflectors, after which it may contact said spacer elements which tend to combine the effect of the wind to the one or more substantially pie-shaped quarter sections within said vent pipe which communicate respectively with the one or more openings through which the wind enterS.
Claim 3
Dependent Claim
44 words
The exhaust stack of claim 1 including a slot in each of said spacer elements, the spacer elements being joined together to form a unitary structure by engaging the slot in one of said elements with a corresponding slot in another of said elements.
Claim 4
Dependent Claim
41 words
The exhaust stack of claim 2 wherein the bottom surfaces of said spacer elements are inclined downwardly toward the center of said vent pipe at an angle corresponding to the angle of inclination of the upper surfaces of said spacer elements.
Claim 5
Dependent Claim
20 words
The exhaust stack of claim 1 wherein said wind deflectors make an angle of about 45* with said vent pipe.
Claim 6
Dependent Claim
18 words
The exhaust stack of claim 1 including a rain lip formed on the extremities of said wind deflectors.
Claim 7
Dependent Claim
31 words
The exhaust stack of claim 2 wherein the end portions of each of said spacer elements are bent over to form tabs which contact the inner surface of said vent pipe.
Claim 8
Dependent Claim
53 words
The exhaust stack of claim 2 wherein said wind openings are spaced at more than one level with respect to the end of said vent pipe, the first level being immediately adjacent and parallel to the end of said vent pipe and other levels being spaced from and parallel to the first level.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-24 | 1975-07-26 | 1976-01-25 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-24 | 1979-07-26 | 1980-01-25 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-24 | 1983-07-26 | 1984-01-25 | $7700.00 | Window Closed / Lapsed |