Patent US4174701A successfully refreshed from Google Patents.
US4174701A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireplace system
Assignee: Individual
•
Filing: 1977-05-03
•
Granted: 1979-11-20
•
Expires: 1997-05-03
Abstract
Abstract A fireplace system comprising a grate consisting of a plurality of parallel hollow members for holding logs having a rear header in communication with the hollow member for supplying fresh air to be passed through the hollow tubular members. The tubular members have discharge apertures therein for supplying air to support combustion. The front of the tubular members are provided with a header in communication with a muffler system for discharging heated air into a room.
Inventors
- 👤 Thayne R. Gneiting
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 19:35
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/185; F24B1/188; F24B1/1885; F24B1/1886
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
207 words
A fireplace device comprising a plurality of arcuate hollow tubular members for holding logs, disposed in a fireplace, a rear header connected to said tubular members, an air inlet pipe connected to said rear header, a housing disposed at the rear of the fireplace and outside the back wall of the fireplace, a motor and intake fan in said housing to supply cold outside air to said inlet pipe and rear header and tubular members, a front header connected to the front end of said tubular members and disposed in the fireplace, a substantially horizontal housing connected to said front header and disposed in the fireplace to receive hot air from said hollow members, a plurality of apertures in said hollow members to supply fresh air from combustion, glass panels closing off the front of the fireplace to prevent air from the room in which it is located from entering the fireplace, said horizontal housing having a central inlet adjacent its rear to receive heated air from said front header and oppositely disposed hot air outlets below said glass panels, and a plurality of vertical alternating panels in said horizontal housing to force heated air to pass therethrough in a tortuous path before discharge through its outlets.
Claim 2
Dependent Claim
207 words
A fireplace device comprising a plurality of arcuate hollow tubular members for holding logs, disposed in a fireplace, a rear header connected to said tubular members, an air inlet pipe connected to said rear header, a housing disposed at the rear of the fireplace and outside the back wall of the fireplace, a motor and intake fan in said housing to supply cold outside air to said inlet pipe and rear header and tubular members, a front header connected to the front end of said tubular members and disposed in the fireplace, a substantially horizontal housing connected to said front header and disposed in the fireplace to receive hot air from said hollow members, a plurality of apertures in said hollow members to supply fresh air from combustion, glass panels closing off the front of the fireplace to prevent air from the room in which it is located from entering the fireplace, said horizontal housing having a central inlet adjacent its rear to receive heated air from said front header and oppositely disposed hot air outlets below said glass panels, and a plurality of vertical alternating panels in said horizontal housing to force heated air to pass therethrough in a tortuous path before discharge through its outlets.
Claim 3
Dependent Claim
35 words
The devide of claim 1 wherein the alternating panels are connected to the front and back of said horizontal housing with one attached to the front and the next adjacent one attached to the rear.
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) | 1982-11-19 | 1983-05-21 | 1983-11-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1986-11-19 | 1987-05-21 | 1987-11-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1990-11-19 | 1991-05-21 | 1991-11-20 | $7700.00 | Window Closed / Lapsed |