US3879217A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electric storage battery grids
Assignee: Electric Power Storage Ltd
•
Filing: 1974-02-13
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Granted: 1975-04-22
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Expires: 1994-02-13
Abstract
Abstract An electric storage battery grid made from an antimonial lead alloy containing up to 4.0% antimony contains 0.001 to 0.005% selenium and arsenic, copper and tin. The alloy has improved casting properties and a reduced tendency to release antimony in use.
Inventors
- 👤 Kenneth Peters
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 13:26
CPC Classifications
H; H01; H01M; H01M4/00; H01M4/02; H01M4/64; H01M4/66; H01M4/68; H01M4/685; C; C22; C22C; C22C11/00; C22C11/08; C22C11/10; Y; Y02; Y02E; Y02E60/00; Y02E60/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
56 words
AN ELECTRIC STORAGE BATTERY GRID MADE FROM AN ALLOY COMPRISING BY WEIGHT: UP TO 4.0% ANTIMONY; 0% UP TO 0.5% ARSENIC, 0% UP TO 0.1% COPPER, 0% UP TO 0.5% SULPHUR, 0% UP TO 0.5% TIN, AND SELENIUM 0.001% UP TO LESS THAN 0.005%, THE BALANCE BEING LEAD, TRACE ELEMENTS, KNOWN OPTIONAL ALLOY INGREDIENTS AND IMPURITIES.
Claim 2
Dependent Claim
56 words
AN ELECTRIC STORAGE BATTERY GRID MADE FROM AN ALLOY COMPRISING BY WEIGHT: UP TO 4.0% ANTIMONY; 0% UP TO 0.5% ARSENIC, 0% UP TO 0.1% COPPER, 0% UP TO 0.5% SULPHUR, 0% UP TO 0.5% TIN, AND SELENIUM 0.001% UP TO LESS THAN 0.005%, THE BALANCE BEING LEAD, TRACE ELEMENTS, KNOWN OPTIONAL ALLOY INGREDIENTS AND IMPURITIES.
Claim 3
Dependent Claim
56 words
An electric storage battery grid made from an alloy comprising by weight: Up to 4.0% antimony, 0% up to 0.5% arsenic, 0% up to 0.1% copper, 0% up to 0.5% sulphur, 0% up to 0.5% tin, and selenium 0.001% up to less than 0.005%, the balance being lead, trace elements, known optional alloy ingredients and impurities.
Claim 4
Dependent Claim
56 words
An electric storage battery grid made from an alloy comprising by weight: Up to 4.0% antimony, 0% up to 0.5% arsenic, 0% up to 0.1% copper, 0% up to 0.5% sulphur, 0% up to 0.5% tin, and selenium 0.001% up to less than 0.005%, the balance being lead, trace elements, known optional alloy ingredients and impurities.
Claim 5
Dependent Claim
19 words
An electric storage battery grid as claimed in claim 1 in which the alloy contains 1% to 3% antimony.
Claim 6
Dependent Claim
19 words
An electric storage battery grid as claimed in claim 1 in which the alloy contains 0.05% to 0.4% arsenic.
Claim 7
Dependent Claim
19 words
An electric storage battery grid as claimed in claim 1 in which the alloy contains 0.02% to 0.05% copper.
Claim 8
Dependent Claim
19 words
An electric storage battery grid as claimed in claim 1 in which the alloy contains 0.01% to 0.4% tin.
Claim 9
Dependent Claim
19 words
An electric storage battery grid as claimed in claim 1 in which the alloy contains 0.001% to 0.004% selenium.
Claim 10
Dependent Claim
39 words
An electric storage battery grid as claimed in claim 1 in which the alloy contains 1.0% to 3.0% antimony, 0.05% to 0.4% arsenic, 0.01% to 0.4% tin, copper in an amount not exceeding 0.05%, and 0.001 to 0.004% selenium.
Claim 11
Dependent Claim
33 words
An electric storage battery grid as claimed in claim 1 in which the alloy contains 2.6% antimony, 0.05% arsenic, 0.01% tin, 0.004% selenium, and less than 0.01% copper, and less than 0.001% sulphur.
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) | 1978-04-21 | 1978-10-21 | 1979-04-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-21 | 1982-10-21 | 1983-04-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-21 | 1986-10-21 | 1987-04-22 | $7700.00 | Window Closed / Lapsed |