Patent US3227976A successfully refreshed from Google Patents.
US3227976A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Damping means for shafts
Assignee: Varian Medical Systems Inc
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Filing: 1961-07-31
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Granted: 1966-01-04
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Expires: 1981-07-31
Abstract
No abstract record available.
Inventors
- 👤 Wayne K Barlow
- 👤 John F Middaugh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 19:33
CPC Classifications
F; F16; F16F; F16F15/00; F16F15/10; F16F15/12; F16F15/129; F16F15/02; H; H01; H01J; H01J23/00; H01J23/16; H01J23/18; H01J23/20; H01J23/36; H01J25/00; H01J25/02; H01J25/22; H01J25/24; Y; Y10; Y10T; Y10T74/00; Y10T74/20; Y10T74/20576; Y10T74/20636; Y10T74/2066
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
142 words
IN A ELECTRON TUBE INCLUDING A RESONANT CAVITY, A TUNING MECHANISM FOR TUNING THE CAVITY TO A DESIRED OPERATING FREQUENCY AND COMPRISING A HOLLOW SUPPORT SHELL EXTENDING FROM SAID TUBE, A TUNING SHAFT MOVABLE SUPPORTED IN THE HOLLOW SUPPORT SHELL FOR MOVEMENT UPON APPLICATION OF A FORCE THERETO FALLING WITHIN A PREDETERMINED RANGE, SAID SHAFT HAVING A SMOOTH SURFACE PORTION WITHIN SAID SHELL, AND MEANS ON SAID HOLLOW SUPPORT SHELL TO DAMP VIBRATION OF SAID TUNING SHAFT AND MAINTAINING WITHIN SAID PREDETERMINED RANGE THE FORCE REQUIRED TO MOVE SAID SHAFT, SAID MEANS COMPRISING AT LEAST ONE FRICTION MEMBER MOVABLE SUPPORTED ON SAID HOLLOW SUPPORT SHELL AND IMPINGING AGAINST SAID SMOOTH PORTION OF SAID SHAFT, AND AT LEAST ONE LUBRICATING MEMBER MOVABLY SUPPORTED ON SAID HOLLOW SUPPORT SHELL TO LUBRICATE THE TRACK OF SAID FRICTION MEMBER ON THE SHAFT UPON RELATIVE MOVEMENT THEREBETWEEN.
Claim 2
Dependent Claim
142 words
IN A ELECTRON TUBE INCLUDING A RESONANT CAVITY, A TUNING MECHANISM FOR TUNING THE CAVITY TO A DESIRED OPERATING FREQUENCY AND COMPRISING A HOLLOW SUPPORT SHELL EXTENDING FROM SAID TUBE, A TUNING SHAFT MOVABLE SUPPORTED IN THE HOLLOW SUPPORT SHELL FOR MOVEMENT UPON APPLICATION OF A FORCE THERETO FALLING WITHIN A PREDETERMINED RANGE, SAID SHAFT HAVING A SMOOTH SURFACE PORTION WITHIN SAID SHELL, AND MEANS ON SAID HOLLOW SUPPORT SHELL TO DAMP VIBRATION OF SAID TUNING SHAFT AND MAINTAINING WITHIN SAID PREDETERMINED RANGE THE FORCE REQUIRED TO MOVE SAID SHAFT, SAID MEANS COMPRISING AT LEAST ONE FRICTION MEMBER MOVABLE SUPPORTED ON SAID HOLLOW SUPPORT SHELL AND IMPINGING AGAINST SAID SMOOTH PORTION OF SAID SHAFT, AND AT LEAST ONE LUBRICATING MEMBER MOVABLY SUPPORTED ON SAID HOLLOW SUPPORT SHELL TO LUBRICATE THE TRACK OF SAID FRICTION MEMBER ON THE SHAFT UPON RELATIVE MOVEMENT THEREBETWEEN.
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) | 1969-01-03 | 1969-07-05 | 1970-01-04 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1973-01-03 | 1973-07-05 | 1974-01-04 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1977-01-03 | 1977-07-05 | 1978-01-04 | $7700.00 | Window Closed / Lapsed |