US3087814A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Friction element
Assignee: Motors Liquidation Co
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Filing: 1960-06-27
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Granted: 1963-04-30
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Expires: 1980-06-27
Abstract
No abstract record available.
Inventors
- 👤 James O Smiley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 23:21
CPC Classifications
F; F16; F16D; F16D69/00; F16D69/02; F16D69/027; B; B22; B22F; B22F7/00; B22F7/06; Y; Y10; Y10T; Y10T428/00; Y10T428/12; Y10T428/12014; Y10T428/12028
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
187 words
IN THE METHOD FOR MAKING A RECTILINEAR FRICTION ELEMENT FOR USE A CLUTCH OR BRAKE, THE STEPS COMPRISING, FILLING A MOLD CAVITY WITH ONE METAL POWDER MIXTURE SO THAT THE TOP SURFACE OF SAID MIXTURE IS LEVEL WITH THE TOP OF THE MOLD, MOVING THE BOTTOM SURFACE OF THE MOLD CAVITY WITH THE METAL POWDER LAYER THEREON DOWNWARDLY TO PROVIDE AN ADDITIONAL CAVITY THEREOVER, FILLING THE ADDITIONAL CAVITY WITH ANOTHER METAL POWDER MIXTURE SO THAT THE TOP SURFACE OF SAID MIXTURE IS LEVEL WITH THE TOP OF SAID MOLD, BRIQUETTING SIMULTANEOUSLY THE TWO METAL POWDER LAYERS SO FORMED FOR CAUSING INTERMINGLING OF THE MATERIAL IN SAID LAYERS AT THE INTERFACE WITH A PUNCH HAVING A CURVED SURFACE SIMILAR TO THE CURVED SURFACE OF THE BOTTOM OF SAID MOLD TO PROVIDE A CURVED COMPACT WHERE IN THE FIRST MENTIONED LAYER INCREASES IN THICKNESS FROM ITS CENTER TOWARD ITS END WHILE THE SECOND MENTIONED LAYER DECREASES FROM THE CENTER TOWARD ITS END, SINTERING THE COMPOSITE COMPACT SO FORMED UNDER SUITABLE CONDITIONS OF TIME, TEMPERATURE AND ATMOSPHERE TO PROVIDE A FRICTION ELEMENT HAVING TWO COEXTENSIVELY BONDED LAYERS OF POROUS METAL.
Claim 2
Dependent Claim
187 words
IN THE METHOD FOR MAKING A RECTILINEAR FRICTION ELEMENT FOR USE A CLUTCH OR BRAKE, THE STEPS COMPRISING, FILLING A MOLD CAVITY WITH ONE METAL POWDER MIXTURE SO THAT THE TOP SURFACE OF SAID MIXTURE IS LEVEL WITH THE TOP OF THE MOLD, MOVING THE BOTTOM SURFACE OF THE MOLD CAVITY WITH THE METAL POWDER LAYER THEREON DOWNWARDLY TO PROVIDE AN ADDITIONAL CAVITY THEREOVER, FILLING THE ADDITIONAL CAVITY WITH ANOTHER METAL POWDER MIXTURE SO THAT THE TOP SURFACE OF SAID MIXTURE IS LEVEL WITH THE TOP OF SAID MOLD, BRIQUETTING SIMULTANEOUSLY THE TWO METAL POWDER LAYERS SO FORMED FOR CAUSING INTERMINGLING OF THE MATERIAL IN SAID LAYERS AT THE INTERFACE WITH A PUNCH HAVING A CURVED SURFACE SIMILAR TO THE CURVED SURFACE OF THE BOTTOM OF SAID MOLD TO PROVIDE A CURVED COMPACT WHERE IN THE FIRST MENTIONED LAYER INCREASES IN THICKNESS FROM ITS CENTER TOWARD ITS END WHILE THE SECOND MENTIONED LAYER DECREASES FROM THE CENTER TOWARD ITS END, SINTERING THE COMPOSITE COMPACT SO FORMED UNDER SUITABLE CONDITIONS OF TIME, TEMPERATURE AND ATMOSPHERE TO PROVIDE A FRICTION ELEMENT HAVING TWO COEXTENSIVELY BONDED LAYERS OF POROUS METAL.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1966-04-29 | 1966-10-29 | 1967-04-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1970-04-29 | 1970-10-29 | 1971-04-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1974-04-29 | 1974-10-29 | 1975-04-30 | $7700.00 | Window Closed / Lapsed |