US3184306A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction material
Assignee: Raybestos Manhattan Inc
•
Filing: 1962-01-02
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Granted: 1965-05-18
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Expires: 1982-01-02
Abstract
No abstract record available.
Inventors
- 👤 Robert L Fish
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 08:59
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/027; C; C22; C22C; C22C1/00; C22C1/10; C22C1/1078; C22C32/00; C22C32/001; C22C32/0015
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
143 words
THE METHOD OF MAKING A HIGH HEAT RESISTANT, SINTERED, POROUS, FRICTION MATERIAL COMPOSITION WHICH COMPRISES, MIXING (A) A POWDERED METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND MAGNESIUM WITH (B) A SUBSTANTIALLY STOICHIOMETRIC AMOUNT OF AN OXIDE OF A HIGH MELTING POING METAL, AND (C) A POWDERED HIGH MELTING POINT METAL, COLD COMPACTING THIS MIX WITH PRESSURE TO FORM A HANDLEABLE SHAPED COMPACT, THEN HEATING THIS SHAPED COMPACT TO INITIATE AN EXOTHERMIC REACTION WHEREBY SAID FIRST METAL (A) IS CONVERTED TO ITS REFRACTORY OXIDE AND SAID OXIDE (B) IS REDUCED TO ITS FREE METAL, SAID HIGH MELTING POING ADDITIVE (C) ALLOYING WITH SAID FREE METAL AND BEING IN AN AMOUNT TO PROVIDE A TOTAL FREE MAETAL CONTINUOUS MATRIX IN THE PROPORTION OF FROM AT LEAST 50% TO ABOUT 75% BY TOTAL VOLUME, WITH SAID RESULTING REFRACTORY OXIDE BEING SUBSTANTIALLY UNIFORMLY DISPERSED THEREIN.
Claim 2
Independent Claim
143 words
THE METHOD OF MAKING A HIGH HEAT RESISTANT, SINTERED, POROUS, FRICTION MATERIAL COMPOSITION WHICH COMPRISES, MIXING (A) A POWDERED METAL SELECTED FROM THE GROUP CONSISTING OF ALUMINUM AND MAGNESIUM WITH (B) A SUBSTANTIALLY STOICHIOMETRIC AMOUNT OF AN OXIDE OF A HIGH MELTING POING METAL, AND (C) A POWDERED HIGH MELTING POINT METAL, COLD COMPACTING THIS MIX WITH PRESSURE TO FORM A HANDLEABLE SHAPED COMPACT, THEN HEATING THIS SHAPED COMPACT TO INITIATE AN EXOTHERMIC REACTION WHEREBY SAID FIRST METAL (A) IS CONVERTED TO ITS REFRACTORY OXIDE AND SAID OXIDE (B) IS REDUCED TO ITS FREE METAL, SAID HIGH MELTING POING ADDITIVE (C) ALLOYING WITH SAID FREE METAL AND BEING IN AN AMOUNT TO PROVIDE A TOTAL FREE MAETAL CONTINUOUS MATRIX IN THE PROPORTION OF FROM AT LEAST 50% TO ABOUT 75% BY TOTAL VOLUME, WITH SAID RESULTING REFRACTORY OXIDE BEING SUBSTANTIALLY UNIFORMLY DISPERSED THEREIN.
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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) | 1968-05-17 | 1968-11-16 | 1969-05-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-05-17 | 1972-11-16 | 1973-05-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-05-17 | 1976-11-16 | 1977-05-18 | $7700.00 | Window Closed / Lapsed |