US3631789A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Metal chimney with ceramic lining
Assignee: Individual
•
Filing: 1970-09-28
•
Granted: 1972-01-04
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Expires: 1990-09-28
Abstract
Abstract This invention is directed to extruded structural members snapped together to form a metallic chimney for surrounding a ceramic tile lining. The metallic chimney comprises two pairs of extruded members wherein each pair is identical in configuration. Each member has an inturned flange at one side extending along its full length which is turned back on itself to form an open ended slot extending outwardly of the member. A protuberance is arranged within the slot for engaging with a catch. The opposite side of each member is provided with a catch for engaging with the protuberance of an adjacent member. The members are alternately positioned to form a column with the catch at one side of each member engaging with the protuberance in the slot of the side of an adjacent member.
Inventors
- 👤 Lewis R Kinsey
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 13:01
CPC Classifications
E; E04; E04F; E04F17/00; E04F17/02
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
174 words
A chimney comprising: a first pair of extruded elongated right angular metallic members of substantially identical configuration; a second pair of extruded elongated right angular metallic members of substantially identical configuration; one side of each member having an inturned flange turned back on itself to form an open ended slot extending substantially parallel with and outwardly of the side of the member; a protuberance formed within each slot; a complementary snap locking means formed at the edge of each of the other sides of said members for engaging with one of said protuberances; one of said members of one of said pairs being alternately arranged with one of said members of said other pair to form a column with each of said other sides of said members fitting into a different slot of an adjacent member; said slots guiding said catches of said members into snap locking engagement with said protuberance to interlock said members into a column configuration; and a ceramic tile arranged within said column for forming a lining for said chimney.
Claim 2
Dependent Claim
174 words
A chimney comprising: a first pair of extruded elongated right angular metallic members of substantially identical configuration; a second pair of extruded elongated right angular metallic members of substantially identical configuration; one side of each member having an inturned flange turned back on itself to form an open ended slot extending substantially parallel with and outwardly of the side of the member; a protuberance formed within each slot; a complementary snap locking means formed at the edge of each of the other sides of said members for engaging with one of said protuberances; one of said members of one of said pairs being alternately arranged with one of said members of said other pair to form a column with each of said other sides of said members fitting into a different slot of an adjacent member; said slots guiding said catches of said members into snap locking engagement with said protuberance to interlock said members into a column configuration; and a ceramic tile arranged within said column for forming a lining for said chimney.
Claim 3
Dependent Claim
22 words
The chimney set forth in claim 1 in further combination with louvers arranged near the bottom end of each of said members.
Claim 4
Dependent Claim
35 words
The chimney set forth in claim 1 in further combination with a base, and a flange vertically extending from said base, and wherein said tile is formed around said latter flange to extend vertically therefrom.
Claim 5
Dependent Claim
34 words
The combination set forth in claim 3 wherein each flange of said members is in contact with a surface of said tile to maintain said snap-locking means in engagement with one of the protuberances.
Claim 6
Dependent Claim
33 words
The combination set forth in claim 3 in further combination with a cover spaced from and extending outwardly of the upper peripheral end of said tile over the upper ends of said members.
References Cited (Backward Citations)
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Cited
US2759491A
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US2916054A
Cited
US2821900A
Cited
US3089521A
Cited
US3206898A
Cited
US3363369A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-01-03 | 1975-07-05 | 1976-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-01-03 | 1979-07-05 | 1980-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-01-03 | 1983-07-05 | 1984-01-04 | $7700.00 | Window Closed / Lapsed |