Patent US4320742A successfully refreshed from Google Patents.
US4320742A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damper adjusting mechanism
Assignee: C AND D DISTRIBUTORS Inc
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Filing: 1980-04-28
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Granted: 1982-03-23
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Expires: 2000-04-28
Abstract
Abstract A damper adjusting mechanism is presented wherein the damper is opened and closed by adjusting a rod. This rod is adjusted by the use of grooves which are latched onto the stove's front wall. These grooves are protected from creosote build-up by a shield.
Inventors
- 👤 Carl F. Piontkowski
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 08:24
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/185; F24B1/189; F24B1/1895; F24B5/00
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
183 words
In a stove, the stove having a firebox with oppositely disposed front and rear walls, the stove also having an exhaust port and an adjustable damper mechanism operatively associated therewith, the damper mechanism being manually movable between open and closed positions, an improved damper adjusting mechanism comprising: damper adjustment rod means, said rod means being attached at a first end to the damper and having a second end extending through a hole in the front wall of the stove, said rod means being capable of moving in a first and second direction so as to open and close the damper mechanism, said second end of said rod means having a plurality of notches thereon, said notches being of a larger width than the width of the second wall of the stove, said rod means retained in position by engaging said notches onto the second wall of the stove; and creosote shield means, said shield means being within the stove, said shield means being secured to the second wall of the stove, said shield means partially encompassing said second end of said rod means.
Claim 2
Dependent Claim
183 words
In a stove, the stove having a firebox with oppositely disposed front and rear walls, the stove also having an exhaust port and an adjustable damper mechanism operatively associated therewith, the damper mechanism being manually movable between open and closed positions, an improved damper adjusting mechanism comprising: damper adjustment rod means, said rod means being attached at a first end to the damper and having a second end extending through a hole in the front wall of the stove, said rod means being capable of moving in a first and second direction so as to open and close the damper mechanism, said second end of said rod means having a plurality of notches thereon, said notches being of a larger width than the width of the second wall of the stove, said rod means retained in position by engaging said notches onto the second wall of the stove; and creosote shield means, said shield means being within the stove, said shield means being secured to the second wall of the stove, said shield means partially encompassing said second end of said rod means.
Claim 3
Dependent Claim
24 words
The apparatus of claim 1 wherein the said creosote shield means is of rectangular form, said shield means and said rod means being coaxial.
Claim 4
Dependent Claim
29 words
The apparatus of claim 2 wherein said shield means is arranged such that two opposite corners define a horizontal plane and the two other corners define a vertical plane.
Claim 5
Dependent Claim
33 words
The apparatus of claim 3 wherein the said shield means has sufficient length and is positioned so as to encompass that portion of said rod means that has the plurality of notches thereon.
Claim 6
Dependent Claim
20 words
The apparatus of claim 4 wherein said shield means is secured to the second wall of the stove by welding.
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) | 1985-03-22 | 1985-09-21 | 1986-03-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-03-22 | 1989-09-21 | 1990-03-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-03-22 | 1993-09-21 | 1994-03-23 | $7700.00 | Window Closed / Lapsed |