US2841368A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Lubrication of heat regenerator packing material
Assignee: Union Carbide Corp
•
Filing: 1953-08-12
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Granted: 1958-07-01
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Expires: 1973-08-12
Abstract
No abstract record available.
Inventors
- 👤 George H Zenner
- 👤 Russell W Houvener
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 18:37
CPC Classifications
F; F25; F25J; F25J5/00; F02; F02G; F02G1/00; F02G1/04; F02G1/043; F02G1/053; F02G1/057; F28; F28C; F28C3/00; F28C3/10; F28C3/12; F28C3/14; F28D; F28D19/00; F28D19/04
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
56 words
A LOW TEMPERATURE HEAT REGENERATOR CONTAINING PACKING MATERIAL COMPRISING STONE PELLETS OF 3/16 TO 5/8 INCH DIAMETER, SAID PELLETS HAVING A TENDENCY TO ABRADE AND DUST WHEN SUBJECTED TO REPEATED CHANGES OF FLUID FLOW THROUGH THE REGENERATOR, SAID PELLETS BEING EACH COATED WITH A SOLID LUBRICANT SELECTED FROM THE GROUP CONSISTING OF GRAPHITE AND MOLYBDENUM DISULPHIDE.
Claim 2
Dependent Claim
56 words
A LOW TEMPERATURE HEAT REGENERATOR CONTAINING PACKING MATERIAL COMPRISING STONE PELLETS OF 3/16 TO 5/8 INCH DIAMETER, SAID PELLETS HAVING A TENDENCY TO ABRADE AND DUST WHEN SUBJECTED TO REPEATED CHANGES OF FLUID FLOW THROUGH THE REGENERATOR, SAID PELLETS BEING EACH COATED WITH A SOLID LUBRICANT SELECTED FROM THE GROUP CONSISTING OF GRAPHITE AND MOLYBDENUM DISULPHIDE.
References Cited (Backward Citations)
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Cited
US2443210A
Cited
US2696718A
Cited
US2604469A
Cited
US2671644A
Cited
US2624556A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-06-30 | 1961-12-30 | 1962-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-06-30 | 1965-12-30 | 1966-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-06-30 | 1969-12-30 | 1970-07-01 | $7700.00 | Window Closed / Lapsed |