Patent US2946681A successfully refreshed from Google Patents.
US2946681A
Expired / Lapsed
US
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Method of providing a body with a porous metal shell
Assignee: Federal Mogul Bower Bearings Inc
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Filing: 1957-01-31
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Granted: 1960-07-26
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Expires: 1977-01-31
Abstract
No abstract record available.
Inventors
- 👤 Robert L Probst
- 👤 Brasse Gordon J Le
- 👤 Philip I Karp
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 12:33
CPC Classifications
B; B22; B22F; B22F5/00; B22F5/04; F; F01; F01D; F01D5/00; F01D5/12; F01D5/14; F01D5/18; F01D5/182; F01D5/183; F01D5/28; Y; Y02; Y02T; Y02T50/00; Y02T50/60; Y10; Y10S; Y10S165/00; Y10S165/907; Y10T; Y10T29/00; Y10T29/49; Y10T29/49316; Y10T29/49336; Y10T29/49337; Y10T29/4981; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12021; Y10T428/12028; Y10T428/12063; Y10T428/1209
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
113 words
THE METHOD OF PROVIDING A LONGITUDINALLY EXTENDING BODSY WITH A POROUS METAL SHELL COMPRISED ON SUBSTANTIALLY SPHERICAL PARTICLES AND WHICH CAN BE SUPPLIED INTERNALLY WITH COOLING FLUID THAT FLOWS OUTWARDLY THROUGH THE SHELL, SAID METHOD COMPORISING FORMING THE OUTER SURFACE OF THE BODY WITH LONGITUDINALLY EXTENDING LANDS SEPARATED BY GAPS, FILLING SAID GAPS WITH REFRACTORY MATERIAL, METAL-COATING THE OUTER SURFACES OF SAID LANDS BETWEEN SAID GAPS, CONFINING THE BODY IN A MOLD CAVITY OF A SIZE TO PROVIDE A SPACE SURROUNDING SAID BODY, FILLING SAID SPACE WITH A METAL POWDER THE INDIVIDUAL PARTICLES OF WHICH ARE SUBSTANTIALLY SPHERICAL IN SHAPE, VIBRATING THE POWDER TO PACK IT WITHIN SAID SPACE, INITIALLY SINTERING SAID POWDER
Claim 2
Independent Claim
113 words
THE METHOD OF PROVIDING A LONGITUDINALLY EXTENDING BODSY WITH A POROUS METAL SHELL COMPRISED ON SUBSTANTIALLY SPHERICAL PARTICLES AND WHICH CAN BE SUPPLIED INTERNALLY WITH COOLING FLUID THAT FLOWS OUTWARDLY THROUGH THE SHELL, SAID METHOD COMPORISING FORMING THE OUTER SURFACE OF THE BODY WITH LONGITUDINALLY EXTENDING LANDS SEPARATED BY GAPS, FILLING SAID GAPS WITH REFRACTORY MATERIAL, METAL-COATING THE OUTER SURFACES OF SAID LANDS BETWEEN SAID GAPS, CONFINING THE BODY IN A MOLD CAVITY OF A SIZE TO PROVIDE A SPACE SURROUNDING SAID BODY, FILLING SAID SPACE WITH A METAL POWDER THE INDIVIDUAL PARTICLES OF WHICH ARE SUBSTANTIALLY SPHERICAL IN SHAPE, VIBRATING THE POWDER TO PACK IT WITHIN SAID SPACE, INITIALLY SINTERING SAID POWDER
References Cited (Backward Citations)
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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) | 1963-07-26 | 1964-01-25 | 1964-07-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1967-07-26 | 1968-01-25 | 1968-07-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1971-07-26 | 1972-01-25 | 1972-07-26 | $7700.00 | Window Closed / Lapsed |