US2829972A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Aluminum bronze article for use in conducting steam or hot water
Assignee: Ampco Metal Inc
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Filing: 1956-10-05
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Granted: 1958-04-08
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Expires: 1976-10-05
Abstract
No abstract record available.
Inventors
- 👤 John F Klement
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 19:59
CPC Classifications
B; B23; B23K; B23K35/00; B23K35/22; B23K35/24; B23K35/30; B23K35/302; C; C22; C22C; C22C9/00; C22C9/01
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
99 words
AN ELEMENT NORMALLY SUBJECTED TO STREAM OR HOT WATER IN USE AND FABRICATED FROM AN ALUMINUM BRONZE ALLOY CONSISTING ESSENTIALLY BY WEIGHT OF ABOUT 5.0 TO 8.0% ALUMINUM, ABOUT 0.20 TO 4.00% IRON, ABOUT 0.01 TO 5.00% NICKEL, AT LEAST ONE METALLIC SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF: (A) ABOUT 0.05 TO 1.0% TIN; AND (B) ABOUT 0.05 TO 0.50% SILVER, AND THE BALANCE BEING COPPER, AND SAID ELEMENT BEING CHARACTERIZED BY A DECREASED TENDENCY FOR INTERGRANULAR CORROSION BY REASON OF SAID SELECTED SUBSTANCE THEREIN WHEN SAID ELEMENT IS SUBJECTED TO A MEDIA CONTAINING STEAM OR HOT WATER.
Claim 2
Dependent Claim
99 words
AN ELEMENT NORMALLY SUBJECTED TO STREAM OR HOT WATER IN USE AND FABRICATED FROM AN ALUMINUM BRONZE ALLOY CONSISTING ESSENTIALLY BY WEIGHT OF ABOUT 5.0 TO 8.0% ALUMINUM, ABOUT 0.20 TO 4.00% IRON, ABOUT 0.01 TO 5.00% NICKEL, AT LEAST ONE METALLIC SUBSTANCE SELECTED FROM THE GROUP CONSISTING OF: (A) ABOUT 0.05 TO 1.0% TIN; AND (B) ABOUT 0.05 TO 0.50% SILVER, AND THE BALANCE BEING COPPER, AND SAID ELEMENT BEING CHARACTERIZED BY A DECREASED TENDENCY FOR INTERGRANULAR CORROSION BY REASON OF SAID SELECTED SUBSTANCE THEREIN WHEN SAID ELEMENT IS SUBJECTED TO A MEDIA CONTAINING STEAM OR HOT WATER.
References Cited (Backward Citations)
GB189616831A
Cited
FR360250A
Cited
US1718502A
Cited
US1680577A
Cited
US2031316A
Cited
US1986210A
Cited
US2007430A
Cited
US2789900A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1961-04-07 | 1961-10-07 | 1962-04-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1965-04-07 | 1965-10-07 | 1966-04-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1969-04-07 | 1969-10-07 | 1970-04-08 | $7700.00 | Window Closed / Lapsed |