US3206630A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooled brush holder for carrying current in dynamo-electric machines
Assignee: CA Parsons and Co Ltd
•
Filing: 1961-05-29
•
Granted: 1965-09-14
•
Expires: 1981-05-29
Abstract
No abstract record available.
Inventors
- 👤 Berger Bruno
- 👤 Norman E Gatiss
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 10:26
CPC Classifications
H; H02; H02K; H02K9/00; H02K9/28
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
47 words
BRUSH GEAR FOR DYNAMO-ELECTRIC MACHINES COMPRISING HOLLOW BRUSH BOXES, BRUSHES LOCATED IN SAID BOXES, SAID BRUSH BOXES HAVING CONNECTED CAVITIES THEREIN SURROUNDING THE BRUSHES, THE CAVITIES CONTAINING AW VAPORISABLE LIQUID AND MEANS CONNECTED WITH THE LIQUID SPACE IN SAID BOXES FOR CONDENSING VAPOUR PRODUCED FROM SAID LIQUID.
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1968-09-13 | 1969-03-15 | 1969-09-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-09-13 | 1973-03-15 | 1973-09-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-09-13 | 1977-03-15 | 1977-09-14 | $7700.00 | Window Closed / Lapsed |