US3234322A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas-tight bushing with gas filling and control electrodes
Assignee: BBC Brown Boveri AG Germany
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Filing: 1963-10-08
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Granted: 1966-02-08
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Expires: 1983-10-08
Abstract
No abstract record available.
Inventors
- 👤 Frowein Egbertus Adrianus
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-02 06:01
CPC Classifications
H; H01; H01B; H01B17/00; H01B17/36; H01B17/26; H01B17/28
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
138 words
IN A HOLLOW GAS-TIGHT BUSHING ADAPTED TO BE FILLED WITH GAS AND HAVING AN ELECTRICAL CONDUCTOR ROD PASSED THERETHROUGH, THE IMPROVEMENT WHEREIN SAID BUSHING IS A CAST RESIN AND INCLUDES WITHIN THE SAME AT LEAST ONE CASTIN INTERNALLY THREADED METALLIC RING CONCENTRIC WITH SAID CONDUCTOR ROD AND SURROUNDING THE LATTER, SAID RING INCLUDING A RADIALLY INNER CURVED PORTION AND BEING PARTIALLY EMBEDDED WITHIN A CYLINDRICAL PART OF THE INNER WALL OF SAID BUSHING BODY BUT ONLY UP TO THE POINT WHERE SAID RADIALLY INNER CURVED PORTION BEGINS AS A RESULT OF RADIALLY INWARD SHRINKAGE ATTRIBUTABLE TO COOLING AFTER CASTING, AND A METALLIC CONTROL ELECTRODE SURROUNDING SAID CONDUCTOR ROD IN THE SPACE BETWEEN SAID ROD AND SAID INNER WALL OF SAID BUSHING, SAID CONTROL ELECTRODE HAVING AN EXTERNALLY THREADED PORTION SCREWED ONTO THE INTERNAL THREADED PORTION OF SAID RING.
Claim 2
Dependent Claim
138 words
IN A HOLLOW GAS-TIGHT BUSHING ADAPTED TO BE FILLED WITH GAS AND HAVING AN ELECTRICAL CONDUCTOR ROD PASSED THERETHROUGH, THE IMPROVEMENT WHEREIN SAID BUSHING IS A CAST RESIN AND INCLUDES WITHIN THE SAME AT LEAST ONE CASTIN INTERNALLY THREADED METALLIC RING CONCENTRIC WITH SAID CONDUCTOR ROD AND SURROUNDING THE LATTER, SAID RING INCLUDING A RADIALLY INNER CURVED PORTION AND BEING PARTIALLY EMBEDDED WITHIN A CYLINDRICAL PART OF THE INNER WALL OF SAID BUSHING BODY BUT ONLY UP TO THE POINT WHERE SAID RADIALLY INNER CURVED PORTION BEGINS AS A RESULT OF RADIALLY INWARD SHRINKAGE ATTRIBUTABLE TO COOLING AFTER CASTING, AND A METALLIC CONTROL ELECTRODE SURROUNDING SAID CONDUCTOR ROD IN THE SPACE BETWEEN SAID ROD AND SAID INNER WALL OF SAID BUSHING, SAID CONTROL ELECTRODE HAVING AN EXTERNALLY THREADED PORTION SCREWED ONTO THE INTERNAL THREADED PORTION OF SAID RING.
References Cited (Backward Citations)
DE394787C
Cited
US2358553A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1969-02-07 | 1969-08-09 | 1970-02-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-02-07 | 1973-08-09 | 1974-02-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-02-07 | 1977-08-09 | 1978-02-08 | $7700.00 | Window Closed / Lapsed |