US4314848A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Silver alloy for a sliding contact
Assignee: Panasonic Holdings Corp
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Filing: 1979-11-19
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Granted: 1982-02-09
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Expires: 1999-11-19
Abstract
Abstract Silver alloy for sliding contact, containing 2 to 8% Mo, up to 10% Cu, up to 10% Pd and remainder of Ag. This alloy has high wear resistance, low electrical contact-resistance and low mechanical friction. So, when it is used as a sliding contact material, the sliding contact has a long operation life.
Inventors
- 👤 Tsunehiko Todoroki
- 👤 Hyogo Hirohata
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 20:01
CPC Classifications
H; H01; H01H; H01H1/00; H01H1/02; H01H1/021; H01H1/023; C; C22; C22C; C22C5/00; C22C5/06; C22C5/08; H01R; H01R39/00; H01R39/02; H01R39/18; H01R39/20; Y; Y10; Y10S; Y10S428/00; Y10S428/922; Y10S428/9265; Y10S428/929; Y10T; Y10T428/00; Y10T428/12; Y10T428/12493; Y10T428/12771; Y10T428/12861; Y10T428/12896
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
21 words
Silver alloy for sliding contact, containing 2% to 8% molybdenum, 3% to 10% copper, up to 10% palladium and remainder silver.
Claim 2
Dependent Claim
21 words
Silver alloy for sliding contact, containing 2% to 8% molybdenum, 3% to 10% copper, up to 10% palladium and remainder silver.
Claim 3
Dependent Claim
23 words
Silver alloy for use as a brush material in a small d.c. motor, containing 2% to 8% molybdenum, 3% copper and remainder silver.
Claim 4
Dependent Claim
23 words
Silver alloy for use as a brush material in a small d.c. motor, containing 2% to 8% molybdenum, 3% copper and remainder silver.
Claim 5
Dependent Claim
25 words
Silver alloy for use as a brush material in a small d.c. motor containing 2% molybdenum, 5% copper, 5% to 10% palladium and remainder silver.
Claim 6
Dependent Claim
25 words
Silver alloy for use as a brush material in a small d.c. motor containing 2% molybdenum, 5% copper, 5% to 10% palladium and remainder silver.
Claim 7
Dependent Claim
25 words
Silver alloy for use as a brush material in a small d.c. motor containing 4% molybdenum, 3% copper, 2% to 10% palladium and remainder silver.
Claim 8
Dependent Claim
25 words
Silver alloy for use as a brush material in a small d.c. motor containing 4% molybdenum, 3% copper, 2% to 10% palladium and remainder silver.
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) | 1985-02-08 | 1985-08-10 | 1986-02-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1989-02-08 | 1989-08-10 | 1990-02-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1993-02-08 | 1993-08-10 | 1994-02-09 | $7700.00 | Window Closed / Lapsed |