US2652037A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchange apparatus
Assignee: EIDP Inc
•
Filing: 1947-09-03
•
Granted: 1953-09-15
•
Expires: 1967-09-03
Abstract
No abstract record available.
Inventors
- 👤 Ernest D Lewis
- 👤 Richard M Luckring
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 03:55
CPC Classifications
F; F28; F28F; F28F21/00; F28F21/04; F28F9/00; F28F9/007; F28F9/013
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
64 words
A SUPPORT ELEMENT ENABLING HORIZONTAL MOVEMENT OF A FUSED SILICA CONDUIT EMPLOYED IN A FURNACE FOR HEATING CORROSIVE FLUIDS TO ELEVATED TEMPERATURES COMPRISING IN COMBINATION AN ELONGATED ROLLER-BEARING MEMBER MOUNTED FOR RESTRICTED MOVEMENT IN A TUBULAR SUPPORT COLUMN, AND A LOAD DISTRIBUTING PLATE MEMBER DISPOSED WITHIN SAID COLUMN AND CARRIED BY SAID BEARING MEMBER AND UPON WHICH PLATE MEMBER SAID FUSED SILICA CONDUIT RESTS.
Claim 2
Dependent Claim
64 words
A SUPPORT ELEMENT ENABLING HORIZONTAL MOVEMENT OF A FUSED SILICA CONDUIT EMPLOYED IN A FURNACE FOR HEATING CORROSIVE FLUIDS TO ELEVATED TEMPERATURES COMPRISING IN COMBINATION AN ELONGATED ROLLER-BEARING MEMBER MOUNTED FOR RESTRICTED MOVEMENT IN A TUBULAR SUPPORT COLUMN, AND A LOAD DISTRIBUTING PLATE MEMBER DISPOSED WITHIN SAID COLUMN AND CARRIED BY SAID BEARING MEMBER AND UPON WHICH PLATE MEMBER SAID FUSED SILICA CONDUIT RESTS.
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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) | 1956-09-14 | 1957-03-16 | 1957-09-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1960-09-14 | 1961-03-16 | 1961-09-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1964-09-14 | 1965-03-16 | 1965-09-15 | $7700.00 | Window Closed / Lapsed |