Patent US4068649A successfully refreshed from Google Patents.
US4068649A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Free standing fireplace stove
Assignee: Peerless Portable Metal Buildings Inc
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Filing: 1976-05-12
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Granted: 1978-01-17
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Expires: 1996-05-12
Abstract
Abstract A free standing fireplace stove is provided wherein the combustion air passes under the bottom of the combustion chamber to keep the bottom of the fireplace unit cool. The fireplace is so well insulated that it may be installed on a rug without the use of a hearth.
Inventors
- 👤 William R. Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 22:18
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/181
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
117 words
A free standing fireplace stove having a front and a back with a mouth in the front for supplying fuel to the stove, and having in combination: a. a base for said fireplace stove, said base extending forward beyond the mouth of said fireplace and having an open passage for air therein; b. an outlet for combustion air leading from said passage in said base to the front of said fireplace said passage extending completely across the mouth; and c. an air inlet adjacent the rear of said base whereby combustion air for said fireplace enters the rear of the base, passes completely under the fireplace, the enters the fireplace stove as combustion air through said outlet.
Claim 2
Dependent Claim
117 words
A free standing fireplace stove having a front and a back with a mouth in the front for supplying fuel to the stove, and having in combination: a. a base for said fireplace stove, said base extending forward beyond the mouth of said fireplace and having an open passage for air therein; b. an outlet for combustion air leading from said passage in said base to the front of said fireplace said passage extending completely across the mouth; and c. an air inlet adjacent the rear of said base whereby combustion air for said fireplace enters the rear of the base, passes completely under the fireplace, the enters the fireplace stove as combustion air through said outlet.
Claim 3
Dependent Claim
27 words
The structure of claim 1 wherein said fireplace has closeable doors over the mouth of said fireplace, whereby substantially all combustion air must pass through said base.
Claim 4
Dependent Claim
63 words
The structure of claim 1 wherein said base has an intermediate plate dividing the space within said base in two horizontal zones, namely an upper zone and a lower zone, the lower of said zones being open on its bottom side only and a passage at the rear of said fireplace in said intermediate place connecting the lower zone with the upper zone.
Claim 5
Dependent Claim
16 words
The structure of claim 1 wherein said base has a removable plate at the back thereof.
Claim 6
Dependent Claim
16 words
The structure of claim 1 having a layer of insulation on the back of the stove.
References Cited (Backward Citations)
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Cited
US2375318A
Cited
US2821975A
Cited
US3910251A
Cited
US3926174A
Cited
US3976048A
Cited
US3970067A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-01-16 | 1981-07-18 | 1982-01-17 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-01-16 | 1985-07-18 | 1986-01-17 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-01-16 | 1989-07-18 | 1990-01-17 | $7700.00 | Window Closed / Lapsed |