Patent US3330233A successfully refreshed from Google Patents.
US3330233A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Clements chimneys
Assignee: —
•
Filing: —
•
Granted: 1967-07-11
•
Expires: 1984-07-11
Abstract
No abstract record available.
Inventors
No inventors recorded.
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 14:16
CPC Classifications
E; E04; E04H; E04H12/00; E04H12/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
101 words
A CHIMNEY COMPRISING AN OUTER SHELL AND AT LEAST ONE FABRICATED FLUE SUPPORTED WITHIN THE SHELL; THE CHIMNEY HAVING THE IMPROVEMENT THAT IT COMPRISES AT LEAST ONE GROUP OF ROLLERS OR WHEELS MOUNTED ON THE OUTER SHELL AND SPACED AROUND THE SAID LEAST ONE FLUE IN ROLLING CONTACT THEREWITH TO PROVIDE LATERAL SUPPORT AND GUIDANCE FOR THE SAID AT LEAST ONE FLUE DURING LONGITUDINAL MOVEMENT ARISING FROM THERMAL EXPANSION AND CONTRACTION AND INTRODUCTION AND REMOVAL FROM THE OUTER SHELL, AND A LOOSE FILL OF INSULATING MATERIAL FILLING THE SPACE WITHIN THE OUTER SHELL AND OUTSIDE THE SAID AT LEAST ONE FLUE.
Claim 2
Dependent Claim
101 words
A CHIMNEY COMPRISING AN OUTER SHELL AND AT LEAST ONE FABRICATED FLUE SUPPORTED WITHIN THE SHELL; THE CHIMNEY HAVING THE IMPROVEMENT THAT IT COMPRISES AT LEAST ONE GROUP OF ROLLERS OR WHEELS MOUNTED ON THE OUTER SHELL AND SPACED AROUND THE SAID LEAST ONE FLUE IN ROLLING CONTACT THEREWITH TO PROVIDE LATERAL SUPPORT AND GUIDANCE FOR THE SAID AT LEAST ONE FLUE DURING LONGITUDINAL MOVEMENT ARISING FROM THERMAL EXPANSION AND CONTRACTION AND INTRODUCTION AND REMOVAL FROM THE OUTER SHELL, AND A LOOSE FILL OF INSULATING MATERIAL FILLING THE SPACE WITHIN THE OUTER SHELL AND OUTSIDE THE SAID AT LEAST ONE FLUE.
References Cited (Backward Citations)
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Cited
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Cited
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Cited
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Cited
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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) | 1970-07-10 | 1971-01-09 | 1971-07-11 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-10 | 1975-01-09 | 1975-07-11 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-10 | 1979-01-09 | 1979-07-11 | $7700.00 | Window Closed / Lapsed |