Patent US3317759A successfully refreshed from Google Patents.
US3317759A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Rotating electrical contacts
Assignee: General Electric Co
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Filing: 1964-07-31
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Granted: 1967-05-02
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Expires: 1984-07-31
Abstract
No abstract record available.
Inventors
- 👤 Lloyd P Grobel
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 18:40
CPC Classifications
H; H02; H02K; H02K11/00; H02K11/40; H02K11/30; H02K11/33
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
IN A DEVICE OF THE TYPE HAVING A ROTATING CONDUCTIVE MEMBER AT A FIRST ELECTRICAL POTENTIAL AN A PRIMARY BRUSH IN RUBBING CONTACT WITH SAID MEMBER CONNECTED TO A STATIONARY CONDUCTOR AT A SECOND POTENTIAL AND CARRYING A LOW CURRENT, THE IMPROVEMENT COMPRISING: A SUPPLEMENTAL SOURCE OF ELECTRICAL CURRENT AND A SUPPLEMENTAL BRUSH IN RUBBING CONTACT WITH SAID MEMBER, SAID PRIMARY BRUSH, SUPPLEMENTAL BRUSH AND
Claim 2
Dependent Claim
65 words
IN A DEVICE OF THE TYPE HAVING A ROTATING CONDUCTIVE MEMBER AT A FIRST ELECTRICAL POTENTIAL AN A PRIMARY BRUSH IN RUBBING CONTACT WITH SAID MEMBER CONNECTED TO A STATIONARY CONDUCTOR AT A SECOND POTENTIAL AND CARRYING A LOW CURRENT, THE IMPROVEMENT COMPRISING: A SUPPLEMENTAL SOURCE OF ELECTRICAL CURRENT AND A SUPPLEMENTAL BRUSH IN RUBBING CONTACT WITH SAID MEMBER, SAID PRIMARY BRUSH, SUPPLEMENTAL BRUSH AND
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1970-05-01 | 1970-10-31 | 1971-05-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-05-01 | 1974-10-31 | 1975-05-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-05-01 | 1978-10-31 | 1979-05-02 | $7700.00 | Window Closed / Lapsed |