US3708897A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Closed-damper indicator for fireplace
Assignee: Individual
•
Filing: 1969-04-14
•
Granted: 1973-01-09
•
Expires: 1989-04-14
Abstract
Abstract A closed-damper indicator for a fireplace having an anchoring member provided with a permanent magnet that may be removably secured to a metallic surface in the fire chamber of the fireplace, with a flexible connector having its upper end attached to the anchoring member so as to hang therefrom, and a telltale fixed to the lower end of the connector for visually indicating the fact that the damper of the fireplace has been closed.
Inventors
- 👤 W Adams
- 👤 E Ferrari
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 02:36
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/191
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
143 words
The combination with a fireplace defining a fire chamber and a damper mounted in a flue of the fireplace, of a closed damper indicator comprising: a. an anchoring member manually positioned in the fire chamber and having a permanent magnet fixed thereto, the magnet being removably secured to a metallic surface in the fire chamber; b. a connector having an upper end attached to the anchoring member so as to hang therefrom; c. a telltale fixed to the lower end of the connector for visually indicating the fact that the damper has been closed, the telltale defining a representation of Hephaistos, the Greek God of Fire; d. and the magnet being made to be applied against a metallic strip fixed to the exterior of the fireplace, when the indicator is manually removed from the fire chamber, during times when the damper is open.
Claim 2
Dependent Claim
143 words
The combination with a fireplace defining a fire chamber and a damper mounted in a flue of the fireplace, of a closed damper indicator comprising: a. an anchoring member manually positioned in the fire chamber and having a permanent magnet fixed thereto, the magnet being removably secured to a metallic surface in the fire chamber; b. a connector having an upper end attached to the anchoring member so as to hang therefrom; c. a telltale fixed to the lower end of the connector for visually indicating the fact that the damper has been closed, the telltale defining a representation of Hephaistos, the Greek God of Fire; d. and the magnet being made to be applied against a metallic strip fixed to the exterior of the fireplace, when the indicator is manually removed from the fire chamber, during times when the damper is open.
Claim 3
Dependent Claim
48 words
The combination, as set forth in claim 1; e. and in which the anchoring member has a flat surface wherein the magnet is embedded, the magnet being exposed for freely abutting the metallic surface of the fire chamber or the metallic strip on the exterior of the fireplace.
Claim 4
Dependent Claim
89 words
The combination, as set forth in claim 1; e. and in which the connector is flexible, and the telltale has sufficient weight to maintain the connector taut when the indicator is displayed in either the fire chamber or on the exterior of the fireplace, the anchoring member and its magnet being freely movable into various angular positions relative to the length of the connector so that the magnet may be applied to horizontal or vertical metallic surfaces while the telltale remains hanging from the lower end of the connector.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-09 | 1976-07-10 | 1977-01-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-09 | 1980-07-10 | 1981-01-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-09 | 1984-07-10 | 1985-01-09 | $7700.00 | Window Closed / Lapsed |