US3239704A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Dynamo-electric machine brush holder assembly
Assignee: SCM Corp
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Filing: 1963-05-09
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Granted: 1966-03-08
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Expires: 1983-05-09
Abstract
No abstract record available.
Inventors
- 👤 Francis A Miller
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:20
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/38; H01R39/381
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
120 words
A BRUSH AND HOLDER ASSEMBLY FOR DYNAMO-ELECTRIC MACHINE COMPRISING: A BRUSH; A METAL TUBE WITHIN WHICH SAID BRUSH IS LONGITUDINALLY MOVABLE AND GUIDED; A DIELECTRIC SLEEVE, ONE END OF WHICH SURROUNDS AND MOUNTS SAID METAL TUBE, AND THE OTHER END OF WHICH PROJECTS BEYOND THE METAL TUBE; AN ELECTRICALLY CONDUCTIVE TERMINAL MEANS FIXED TO SAID OTHER END OF SAID SLEEVE AND SPACED AWAY FROM SAID METAL TUBE; A FLEXIBLE CONNECTION BETWEEN SAID BRUSH AND SAID TERMINAL MEANS; A COIL COMPRESSION SPRING SURROUNDING SAID FLEXIBLE CONNECTION, ONE END OF SAID SPRING ENGAGING SAID BRUSH AND ONE OTHER END OF SAID SPRING ENGAGING SAID TERMINAL MEANS; SAID SPRING BEING DISPOSED AND MAINTAINED IN SPACED RELATIONSHIP AWAY FROM CONTACT WITH SAID METAL SLEEVE.
Claim 2
Dependent Claim
120 words
A BRUSH AND HOLDER ASSEMBLY FOR DYNAMO-ELECTRIC MACHINE COMPRISING: A BRUSH; A METAL TUBE WITHIN WHICH SAID BRUSH IS LONGITUDINALLY MOVABLE AND GUIDED; A DIELECTRIC SLEEVE, ONE END OF WHICH SURROUNDS AND MOUNTS SAID METAL TUBE, AND THE OTHER END OF WHICH PROJECTS BEYOND THE METAL TUBE; AN ELECTRICALLY CONDUCTIVE TERMINAL MEANS FIXED TO SAID OTHER END OF SAID SLEEVE AND SPACED AWAY FROM SAID METAL TUBE; A FLEXIBLE CONNECTION BETWEEN SAID BRUSH AND SAID TERMINAL MEANS; A COIL COMPRESSION SPRING SURROUNDING SAID FLEXIBLE CONNECTION, ONE END OF SAID SPRING ENGAGING SAID BRUSH AND ONE OTHER END OF SAID SPRING ENGAGING SAID TERMINAL MEANS; SAID SPRING BEING DISPOSED AND MAINTAINED IN SPACED RELATIONSHIP AWAY FROM CONTACT WITH SAID METAL SLEEVE.
References Cited (Backward Citations)
US1965361A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-03-07 | 1969-09-06 | 1970-03-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-03-07 | 1973-09-06 | 1974-03-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-03-07 | 1977-09-06 | 1978-03-08 | $7700.00 | Window Closed / Lapsed |