US3241546A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fireplace supporting construction
Assignee: SADIE MIRIAM NORTHWOOD
•
Filing: 1965-06-07
•
Granted: 1966-03-22
•
Expires: 1985-06-07
Abstract
No abstract record available.
Inventors
- 👤 John V Northwood
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 09:03
CPC Classifications
F; F24; F24B; F24B1/00; F24B1/18; F24B1/181
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
141 words
A PREFABRICATED FIREPLACE CONSTRUCTION ADAPTED FOR MOUNTING ON A BUILDING WALL AGAINST FLAMMABLE STRUCTURAL MEANS FORMING AN OPENING IN SAID BUILDING WALL, SAID CONSTRUCTION COMPRISING: (A) INNER WALLS FORMING A SOLID FUEL BURNING FIREBOX, SAID FIREBOX HAVING A FORWARD PORTION ADAPTED TO BE SURROUNDED WITH SAID WALL OPENING FORMING MEANS AND A REAR PORTION FOR EXTENDING REARWARDLY OF SAID BUILDING WALL, (B) OUTER SHEET METAL WALLS FORMING A PART OF SAID CONSTRUCTION AND SPACED OUTWARDLY OF SAID FIREBOX AND SURROUNDING SAID FIREBOX AT SAID FORWARD PORTION, AND (C) SPACED APART OUTWARDLY EXTENDING SPACER MEMBERS OF RELATIVELY THIN CROSS SECTION ON THE EXTERIOR SURFACE OF SAID OUTER WALLS AND HAVING OUTER EDGES, SAID SPACER MEMBERS AT SAID OUTER EDGES CONTACTING SAID OPENING FORMING MEANS FOR SUPPORTING SAID FIREPLACE CONSTRUCTION WHILE PERMITTING AIR CIRCULATION BETWEEN SAID OUTER WALLS AND THE OPENING FORMING MEANS.
Claim 2
Dependent Claim
141 words
A PREFABRICATED FIREPLACE CONSTRUCTION ADAPTED FOR MOUNTING ON A BUILDING WALL AGAINST FLAMMABLE STRUCTURAL MEANS FORMING AN OPENING IN SAID BUILDING WALL, SAID CONSTRUCTION COMPRISING: (A) INNER WALLS FORMING A SOLID FUEL BURNING FIREBOX, SAID FIREBOX HAVING A FORWARD PORTION ADAPTED TO BE SURROUNDED WITH SAID WALL OPENING FORMING MEANS AND A REAR PORTION FOR EXTENDING REARWARDLY OF SAID BUILDING WALL, (B) OUTER SHEET METAL WALLS FORMING A PART OF SAID CONSTRUCTION AND SPACED OUTWARDLY OF SAID FIREBOX AND SURROUNDING SAID FIREBOX AT SAID FORWARD PORTION, AND (C) SPACED APART OUTWARDLY EXTENDING SPACER MEMBERS OF RELATIVELY THIN CROSS SECTION ON THE EXTERIOR SURFACE OF SAID OUTER WALLS AND HAVING OUTER EDGES, SAID SPACER MEMBERS AT SAID OUTER EDGES CONTACTING SAID OPENING FORMING MEANS FOR SUPPORTING SAID FIREPLACE CONSTRUCTION WHILE PERMITTING AIR CIRCULATION BETWEEN SAID OUTER WALLS AND THE OPENING FORMING MEANS.
References Cited (Backward Citations)
US3123063A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-21 | 1969-09-20 | 1970-03-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-21 | 1973-09-20 | 1974-03-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-21 | 1977-09-20 | 1978-03-22 | $7700.00 | Window Closed / Lapsed |