US3333579A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Formation of low friction glass-like surface on aluminum silicon alloy for engine operation
Assignee: Reynolds Metals Co
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Filing: 1964-06-29
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Granted: 1967-08-01
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Expires: 1984-06-29
Abstract
No abstract record available.
Inventors
- 👤 Gilbert R Shockley
- 👤 Jr Harold H Macklin
- 👤 Erik F Barkman
- 👤 Harold J Coates
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 05:23
CPC Classifications
C; C23; C23F; C23F1/00; C23F1/10; C23F1/14; C23F1/16; C23F1/20; C09; C09K; C09K3/00; C09K3/14; C22; C22C; C22C21/00; C22C21/02; F; F02; F02B; F02B77/00; F02B77/02; F02F; F02F1/00; F02F1/02; F02F1/04; F02F1/06; F02F1/08; F16; F16C; F16C33/00; F16C33/02; F16C33/04; F16C33/06; F16C33/12; F16C33/121; F05; F05C; F05C2203/00; F05C2203/04; Y; Y10; Y10T; Y10T29/00; Y10T29/49; Y10T29/49636; Y10T29/49709; Y10T29/49995; Y10T29/49996
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
63 words
METHOD OF FORMING A LOW FRICTION FINISH ON THE SURFACE OF A HYPEREUTECTIC SILICON ALUMINUM BASE ALLOY ARTICLE, WHICH COMPRISES THE STEPS OF PREFERENTIALLY REMOVING ALUMINUM FROM A SURFACE LAYER OF SAID ARTICLE TO EXPOSE PARTICLES OF SILICON PROTRUDING ABOVE THE SURROUNDING ALLOY SURFACE, AND THEN MECHANICALLY POLISHING THE PROTRUDING SILICON SURFACES TO PRODUCE A GLAZE-LIKE FINISH ON THE SURFACE OF SAID ARTICLE.
Claim 2
Dependent Claim
63 words
METHOD OF FORMING A LOW FRICTION FINISH ON THE SURFACE OF A HYPEREUTECTIC SILICON ALUMINUM BASE ALLOY ARTICLE, WHICH COMPRISES THE STEPS OF PREFERENTIALLY REMOVING ALUMINUM FROM A SURFACE LAYER OF SAID ARTICLE TO EXPOSE PARTICLES OF SILICON PROTRUDING ABOVE THE SURROUNDING ALLOY SURFACE, AND THEN MECHANICALLY POLISHING THE PROTRUDING SILICON SURFACES TO PRODUCE A GLAZE-LIKE FINISH ON THE SURFACE OF SAID ARTICLE.
References Cited (Backward Citations)
US3161181A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-07-31 | 1971-01-30 | 1971-08-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-07-31 | 1975-01-30 | 1975-08-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-07-31 | 1979-01-30 | 1979-08-01 | $7700.00 | Window Closed / Lapsed |