Patent US3913663A successfully refreshed from Google Patents.
US3913663A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Energy conservation chamber
Assignee: Individual
•
Filing: 1974-05-03
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Granted: 1975-10-21
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Expires: 1994-05-03
Abstract
Abstract Discharging heated gas from a combustion fuel heating apparatus is directed along a circuitous path through spaced inner and outer chambers prior to discharge. Incoming air is directed through an intermediate chamber between the inner and outer flue chamber paths for a heat transfer thereto and a preheating of the incoming air.
Inventors
- 👤 Jack R Gates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:23
CPC Classifications
F; F28; F28D; F28D21/00; F28D21/0001; F28D21/0003; F28D21/0005; F28D21/0008; Y; Y10; Y10S; Y10S165/00; Y10S165/901
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
256 words
An energy conservation system in the form of a heat exchange apparatus, comprising, in combination: a. an outer chamber having spaced, opposed ends, and provided with an inlet opening in one of the ends and an outlet opening in the other of the ends, the inlet opening and outlet opening arranged for passing a first flow of gas through the outer chamber; b. an inner chamber including a continuous wall disposed within the outer chamber and having spaced opposed ends arranged opposite the ends of the outer chamber, the one of the ends opposite the inlet opening of the outer chamber beIng an opening end in spaced alignment with the inlet opening of the outer chamber, and the other of the ends, arranged opposite the outlet opening of the otuer chamber, being a closed end, the opening end receiving the first flow of gas from the inlet opening, the closed end reversing the flow of gas and returning the gas along the continuous wall to the open end, and the first flow of gas further flowing from the open end to the outlet end of the outer chamber; and c. an intermediate chamber having an inner wall common with the inner chamber, and an outer wall disposed between and spaced from the inner wall and the outer chamber, the intermediate chamber being sealed relative to the inner chamber and the outer chamber and provided with an inlet aperture and an outlet aperture, both apertures arranged for passing a second flow of gas through the intermediate chamber.
Claim 2
Dependent Claim
256 words
An energy conservation system in the form of a heat exchange apparatus, comprising, in combination: a. an outer chamber having spaced, opposed ends, and provided with an inlet opening in one of the ends and an outlet opening in the other of the ends, the inlet opening and outlet opening arranged for passing a first flow of gas through the outer chamber; b. an inner chamber including a continuous wall disposed within the outer chamber and having spaced opposed ends arranged opposite the ends of the outer chamber, the one of the ends opposite the inlet opening of the outer chamber beIng an opening end in spaced alignment with the inlet opening of the outer chamber, and the other of the ends, arranged opposite the outlet opening of the otuer chamber, being a closed end, the opening end receiving the first flow of gas from the inlet opening, the closed end reversing the flow of gas and returning the gas along the continuous wall to the open end, and the first flow of gas further flowing from the open end to the outlet end of the outer chamber; and c. an intermediate chamber having an inner wall common with the inner chamber, and an outer wall disposed between and spaced from the inner wall and the outer chamber, the intermediate chamber being sealed relative to the inner chamber and the outer chamber and provided with an inlet aperture and an outlet aperture, both apertures arranged for passing a second flow of gas through the intermediate chamber.
Claim 3
Dependent Claim
19 words
The system of claim 1 further including an inlet duct and an outlet duct communicated with said outer chamber.
Claim 4
Dependent Claim
20 words
The system of claim 2 further including second inlet and outlet ducts communicating with the interior of the intermediate chamber.
Claim 5
Dependent Claim
13 words
The system of claim 3 wherein said chambers are rectangular in cross section.
Claim 6
Dependent Claim
13 words
The system of claim 3 wherein said chambers are triangular in cross section.
Claim 7
Dependent Claim
10 words
The system of claim 3 wherein said chambers are cylindrical.
Claim 8
Dependent Claim
33 words
The system of claim 2 further including a second inlet duct and a second outlet duct, said second ducts arranged surrounding the apertures for communicating solely with the interior of the intermediate chamber.
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) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |