US3028478A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for reducing contact noises in electrical devices
Assignee: Fernmeldewerk Arnstadt VEB
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Filing: 1960-06-27
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Granted: 1962-04-03
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Expires: 1980-06-27
Abstract
No abstract record available.
Inventors
- 👤 Nikola R Belopitov
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 12:18
CPC Classifications
H; H01; H01H; H01H11/00; H01H11/04; H01H11/041
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
92 words
A PROCESS FOR IMPROVING THE CONDUCTIVE PROPERTIES OF THE SURFACE OF A CONTACT MEMBER BY ELECTRO-EROSION, COMPRISING THE STEPS OF POSITIONING A CONSUMABLE ANODE COMPOSED OF A METAL MORE CORROSION-RESISTANT AND MORE CONDUCTIVE THAN SAID CONTACT MEMBER AT A PREDETERMINED DISTANCE FROM SAID CONTACT MEMBER CONNECTED AS A CATHODE, VIBRATING SAID ANODE TOWARD AND AWAY FROM SAID CATHODE WITHOUT TOUCHING SAID SURFACE, BIASING THE VIBRATION OF SAID ANODE SO AS TO RESTRAIN SAID VIBRATION TO PREDETERMINED LIMITS, APPLYING A HIGH MOMENTARY POTENTIAL ACROSS SAID ANODE AND SAID CATHODE TO CAUSE SPARK DISCHARGE
Claim 2
Dependent Claim
92 words
A PROCESS FOR IMPROVING THE CONDUCTIVE PROPERTIES OF THE SURFACE OF A CONTACT MEMBER BY ELECTRO-EROSION, COMPRISING THE STEPS OF POSITIONING A CONSUMABLE ANODE COMPOSED OF A METAL MORE CORROSION-RESISTANT AND MORE CONDUCTIVE THAN SAID CONTACT MEMBER AT A PREDETERMINED DISTANCE FROM SAID CONTACT MEMBER CONNECTED AS A CATHODE, VIBRATING SAID ANODE TOWARD AND AWAY FROM SAID CATHODE WITHOUT TOUCHING SAID SURFACE, BIASING THE VIBRATION OF SAID ANODE SO AS TO RESTRAIN SAID VIBRATION TO PREDETERMINED LIMITS, APPLYING A HIGH MOMENTARY POTENTIAL ACROSS SAID ANODE AND SAID CATHODE TO CAUSE SPARK DISCHARGE
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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) | 1965-04-02 | 1965-10-02 | 1966-04-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-04-02 | 1969-10-02 | 1970-04-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-04-02 | 1973-10-02 | 1974-04-03 | $7700.00 | Window Closed / Lapsed |