US4240361A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Chimney safe heat saver
Assignee: Individual
•
Filing: 1979-02-21
•
Granted: 1980-12-23
•
Expires: 1999-02-21
Abstract
Abstract Safety device in the general form of an apertured disc which aids in keeping sparks and flames from paper, kindling, wood etc., from shooting up the chimney and possibly causing fire; the device also helps to stop soot build up and it controls the rate at which the wood burns, saving fuel.
Inventors
- 👤 Alexander Wisniewski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 14:53
CPC Classifications
F; F23; F23J; F23J15/00; F23J15/02; F23J15/022; Y; Y10; Y10S; Y10S55/00; Y10S55/20
Claims Analysis
Total Claims: 5
Claim 1
Independent Claim
119 words
The safety and energy saving device for the conventional smoke pipe of a stove which comprises in combination with the conventional smoke pipe a length of pipe having a greater diameter than the conventional smoke pipe and conforming in shape thereto, and being associated therewith at the lower end thereof between the conventional smoke pipe and the stove, an annular inverted cap supporting said length of greater diameter, said cap being supported with respect to the stove, a support in said cap, said support extending upwardly therefrom, a disc-like member on said support, apertures in said disc-like member and a connection on said disc-like member connecting the same with respect to the lower end of the conventional smoke pipe.
Claim 2
Dependent Claim
119 words
The safety and energy saving device for the conventional smoke pipe of a stove which comprises in combination with the conventional smoke pipe a length of pipe having a greater diameter than the conventional smoke pipe and conforming in shape thereto, and being associated therewith at the lower end thereof between the conventional smoke pipe and the stove, an annular inverted cap supporting said length of greater diameter, said cap being supported with respect to the stove, a support in said cap, said support extending upwardly therefrom, a disc-like member on said support, apertures in said disc-like member and a connection on said disc-like member connecting the same with respect to the lower end of the conventional smoke pipe.
Claim 3
Dependent Claim
23 words
The safety and energy saving device of claim 1 wherein said disc-like member approximates in diameter the diameter of the conventional smoke pipe.
Claim 4
Dependent Claim
22 words
The safety and energy saving device of claim 1 including a downwardly extending skirt on said disc-like member at the periphery thereof.
Claim 5
Dependent Claim
36 words
The safety and energy saving device of claim 1 including a conventional damper in said conventional smoke pipe, said damper being located above the upper end of said enlarged length of pipe which houses the device.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-12-23 | 1984-06-23 | 1984-12-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-12-23 | 1988-06-23 | 1988-12-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-12-23 | 1992-06-23 | 1992-12-23 | $7700.00 | Window Closed / Lapsed |