US3265914A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Collector ring assembly
Assignee: Fairbanks Morse Inc
•
Filing: 1964-04-21
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Granted: 1966-08-09
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Expires: 1984-04-21
Abstract
No abstract record available.
Inventors
- 👤 Robert J Derber
- 👤 Floyd R Derby
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 01:49
CPC Classifications
H; H01; H01R; H01R39/00; H01R39/02; H01R39/08
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
89 words
IN A ROTARY COLLECTOR RING ASSEMBLY FOR ELECTRICAL MACHINES, A TUBULAR SHAFT MOUNTED HUB, ANNULAR COLLECTOR RINGS OF CONDUCTING MATERIAL ARRANGED IN AXIALLY SPACED APART RELATION CONCENTRICALLY OVER THE HUB, THE INNER CIRCULAR SURFACE OF EACH RING BEING APPRECIABLY RADIALLY SPACED FROM THE OUTER SURFACE OF THE HUB, PAIRS OF COOPERATING WEDGE ELEMENTS INDIVIDUAL TO EACH RING, ARRANGED BETWEEN THE RING AND THE HUB AND MOUNTING THE RING ON THE HUB, THE WEDGE ELEMENTS OF EACH PAIR BEING ARCUATE AND IN RELATIVE WEDGING ENGAGEMENT IN THE CIRCUMFERENTIAL DIRECTION OF
References Cited (Backward Citations)
US3082338A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-08-08 | 1970-02-07 | 1970-08-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-08-08 | 1974-02-07 | 1974-08-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-08-08 | 1978-02-07 | 1978-08-09 | $7700.00 | Window Closed / Lapsed |