Patent US4184475A successfully refreshed from Google Patents.
US4184475A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireplace
Assignee: Preway Inc
•
Filing: 1977-07-12
•
Granted: 1980-01-22
•
Expires: 1997-07-12
Abstract
Abstract A fireplace having passage means for directing outside combustion air into the firebox with a pair of outlet openings for said combustion air and each having an intake damper movable between open and closed positions at the outlet end of said passage means with operating structure for positioning of said intake dampers including handle means disposed at the front of the fireplace.
Inventors
- 👤 Francis L. Faehling
- 👤 Thomas F. Billmeyer
- 👤 Robert G. Moss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 12:48
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/185; F24B1/189; F24B1/19
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
168 words
A fireplace having a casing with a panel extending across the bottom thereof and a front opening thereabove and having an internal wall defining a firebox, passage means in the casing for delivery of external combustion air to the firebox including a pair of outlet openings in opposite wall sections of the firebox, an intake damper positioned in each outlet openings, a pair or rotatable rods connected one to each of said intake dampers and extended downwardly and forwardly to have the lower ends of said rods positioned one at each front corner of the fireplace, a link positioned behind said panel and extended across the width of the fireplace and having opposite ends loosely connected one to each of the rod lower ends, and a handle extended through said panel and connected to said link intermediate the ends thereof and operable from the front of the fireplace whereby handle movement causes movement of the link and simultaneous rotation of the rods and movement of the intake dampers.
Claim 2
Dependent Claim
168 words
A fireplace having a casing with a panel extending across the bottom thereof and a front opening thereabove and having an internal wall defining a firebox, passage means in the casing for delivery of external combustion air to the firebox including a pair of outlet openings in opposite wall sections of the firebox, an intake damper positioned in each outlet openings, a pair or rotatable rods connected one to each of said intake dampers and extended downwardly and forwardly to have the lower ends of said rods positioned one at each front corner of the fireplace, a link positioned behind said panel and extended across the width of the fireplace and having opposite ends loosely connected one to each of the rod lower ends, and a handle extended through said panel and connected to said link intermediate the ends thereof and operable from the front of the fireplace whereby handle movement causes movement of the link and simultaneous rotation of the rods and movement of the intake dampers.
Claim 3
Dependent Claim
159 words
A fireplace having a casing with a panel extending across the bottom thereof and a front opening thereabove and having an internal wall defining a firebox, passage means in the casing for delivery of external combustion air to the firebox including a pair of outlet openings in opposite wall sections of the firebox, an intake damper positioned in each outlet opening, a pair of rods connected one to each of said intake dampers and extended forwardly to have a rod end positioned one at each front corner of the fireplace, a link positioned behind said panel and extended substantially across the width of the fireplace and having opposite ends connected one to each of the rod ends, and a handle extended through said panel and connected to said link intermediate the ends thereof and operable from the front of the fireplace whereby handle movement causes simultaneous movement of the link and rods and resulting movement of the intake dampers.
Claim 4
Dependent Claim
159 words
A fireplace having a casing with a panel extending across the bottom thereof and a front opening thereabove and having an internal wall defining a firebox, passage means in the casing for delivery of external combustion air to the firebox including a pair of outlet openings in opposite wall sections of the firebox, an intake damper positioned in each outlet opening, a pair of rods connected one to each of said intake dampers and extended forwardly to have a rod end positioned one at each front corner of the fireplace, a link positioned behind said panel and extended substantially across the width of the fireplace and having opposite ends connected one to each of the rod ends, and a handle extended through said panel and connected to said link intermediate the ends thereof and operable from the front of the fireplace whereby handle movement causes simultaneous movement of the link and rods and resulting movement of the intake dampers.
References Cited (Backward Citations)
US47945A
Cited
US978227A
Cited
US1722801A
Cited
US2322016A
Cited
US2569624A
Cited
US2863443A
Cited
US3180332A
Cited
US4025043A
Cited
US4004731A
Cited
US4074679A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1983-01-21 | 1983-07-23 | 1984-01-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1987-01-21 | 1987-07-23 | 1988-01-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1991-01-21 | 1991-07-23 | 1992-01-22 | $7700.00 | Window Closed / Lapsed |