Patent US4121560A successfully refreshed from Google Patents.
US4121560A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Freestanding fireplace and room heater
Assignee: Individual
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Filing: 1977-04-04
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Granted: 1978-10-24
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Expires: 1997-04-04
Abstract
Abstract A freestanding fireplace and room heater is described that is both pleasing in appearance and is an efficient room heater. The heater includes an upright firebox selectively sealed by a door on a front wall thereof. The door may be opened and swung to a position adjacent one side of the firebox for free access to the firebox interior. The door includes a removable glass window for a clear view of a fire within the firebox. The window may be selectively removed and replaced with a metal panel. A relatively inconspicuous blower unit is mounted at the rearward side of the firebox to receive and direct air across the back side, then out across the top, bottom, and sides of the firebox. Also included is a draft arrangement adjacent to the glass pane. The draft arrangement operates to draw cool air in and downwardly across the inside surface of the glass pane. The draft arrangement provides air to support combustion within the firebox and prevents build-up of soot and dust on the glass pane. A moveable draft control is provided on the metal panel that, when in place, may be used to vary the airflow through the draft arrangement. The firebox is designed to retain hot gasses in a turbulent atmosphere for a time prior to discharge through a smoke outlet.
Inventors
- 👤 Galeon Knight
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 17:55
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/02; F24B1/18; F24B1/181; F24B13/00; F24B13/004
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
241 words
A freestanding fireplace and room heater, comprising: a firebox having a front opening and a top opening; said top opening being adapted to receive a chimney pipe; said firebox having a flat top surface and upright sidewalls joined by upright front and back walls; a door; hinge means mounting the door to the front wall of the firebox for pivotal movement about a vertical axis between a closed position completely covering the front opening and an open position adjacent one sidewall of the firebox; latch means for tightly securing the door to the firebox in the closed position; a baffle plate mounted in spaced relation to the back wall of the firebox to create an open air space across the back of the firebox; fins on outside edges of the baffle plate that extend fowardly to deflect air forwardly over the firebox; blower means on the baffle for forcing air through the air space to be heated by the firebox and exhausted in a forward direction over the firebox; wherein the door includes a door frame supporting a pane of glass and wherein the door frame is situated between the glass pane and front firebox wall such that in the closed position, the pane is spaced forwardly of the front firebox wall; and wherein the door includes a draft means along an upper horizontal surface thereof for receiving outside air and directing it along an inside surface of the glass pane.
Claim 2
Dependent Claim
241 words
A freestanding fireplace and room heater, comprising: a firebox having a front opening and a top opening; said top opening being adapted to receive a chimney pipe; said firebox having a flat top surface and upright sidewalls joined by upright front and back walls; a door; hinge means mounting the door to the front wall of the firebox for pivotal movement about a vertical axis between a closed position completely covering the front opening and an open position adjacent one sidewall of the firebox; latch means for tightly securing the door to the firebox in the closed position; a baffle plate mounted in spaced relation to the back wall of the firebox to create an open air space across the back of the firebox; fins on outside edges of the baffle plate that extend fowardly to deflect air forwardly over the firebox; blower means on the baffle for forcing air through the air space to be heated by the firebox and exhausted in a forward direction over the firebox; wherein the door includes a door frame supporting a pane of glass and wherein the door frame is situated between the glass pane and front firebox wall such that in the closed position, the pane is spaced forwardly of the front firebox wall; and wherein the door includes a draft means along an upper horizontal surface thereof for receiving outside air and directing it along an inside surface of the glass pane.
Claim 3
Dependent Claim
21 words
The heater as set out by claim 1 wherein the draft means is comprised of louvers formed within the door frame.
Claim 4
Dependent Claim
38 words
The heater as set out by claim 1 wherein the firebox includes a forward and downward projecting gas deflecting baffle located at an upper horizontal edge of the front opening when the door is at the closed position.
Claim 5
Dependent Claim
36 words
The heater as set out by claim 1 wherein the hinge means is located adjacent one side wall to facilitate swinging movement of the door to an open position substantially flush with the adjacent side wall.
Claim 6
Dependent Claim
53 words
The heater as set out by claim 1 further comprising a hinged deflector flap at a top edge of the baffle plate that is movable to an operative position to deflect air across the firebox top surface and to an inoperative position; wherein the air is allowed to exit in an upward direction.
Claim 7
Dependent Claim
43 words
The heater as set out by claim 1 wherein the firebox stands on legs and the baffle plate includes a bottom deflector extending forwardly below the firebox and adjacent the bottom of the back wall to direct air forwardly across the firebox bottom.
Claim 8
Dependent Claim
27 words
The heater as set out by claim 1 further comprising a hearth projecting forwardly of the firebox and door when the door is in the closed position.
Claim 9
Dependent Claim
28 words
The heater as defined in claim 1 wherein the hinge means enables the door to be pivoted more than 270° from the closed position and the open position.
Claim 10
Dependent Claim
52 words
The heater as defined in claim 1 wherein the door frame includes upwardly open upright guideways removably receiving the glass pane such that the glass pane may be selectively removed from the door; and further comprises a metal panel that may be inserted between the guideways in place of the glass pane.
Claim 11
Dependent Claim
23 words
The heater as defined in claim 1 further comprising a draft control for selectively adjusting the amount of airflow through the draft means.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-10-23 | 1982-04-24 | 1982-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-10-23 | 1986-04-24 | 1986-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-10-23 | 1990-04-24 | 1990-10-24 | $7700.00 | Window Closed / Lapsed |