Patent US3153164A successfully refreshed from Google Patents.
US3153164A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Commutator brush and connection
Assignee: KIRKWOOD CARBON CORP
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Filing: 1961-05-15
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Granted: 1964-10-13
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Expires: 1981-05-15
Abstract
No abstract record available.
Inventors
- 👤 Jop Roman Mariam
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 13:29
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/36
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
65 words
AN ELECTRICAL CONTACT BRUSH COMPRISING A SOLID BODY HAVING A RECESS FORMED IN ONE SIDE AND A SEPARATE PASSAGE EXTENDING INTO SAID RECESS FROM ANOTHER SIDE OF THE BODY, A SHUNT EXTENDING THROUGH SAID PASSAGE INTO SAID RECESS, A SHUNT-SECURING BUTTON FORMED OF THE SAME MATERIAL AS SAID BODY, SAID BUTTON HAVING A HEAD TIGHTLY CONSTRAINED WITHIN SAID RECESS AND A STEM EXTENDING TOWARD THE
Claim 2
Dependent Claim
65 words
AN ELECTRICAL CONTACT BRUSH COMPRISING A SOLID BODY HAVING A RECESS FORMED IN ONE SIDE AND A SEPARATE PASSAGE EXTENDING INTO SAID RECESS FROM ANOTHER SIDE OF THE BODY, A SHUNT EXTENDING THROUGH SAID PASSAGE INTO SAID RECESS, A SHUNT-SECURING BUTTON FORMED OF THE SAME MATERIAL AS SAID BODY, SAID BUTTON HAVING A HEAD TIGHTLY CONSTRAINED WITHIN SAID RECESS AND A STEM EXTENDING TOWARD THE
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) | 1967-10-13 | 1968-04-13 | 1968-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1971-10-13 | 1972-04-13 | 1972-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1975-10-13 | 1976-04-13 | 1976-10-13 | $7700.00 | Window Closed / Lapsed |