Patent US3198033A successfully refreshed from Google Patents.
US3198033A
Expired / Lapsed
US
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Valve actuators
Assignee: Rotork PLC
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Filing: 1962-02-26
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Granted: 1965-08-03
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Expires: 1982-02-26
Abstract
No abstract record available.
Inventors
- 👤 Fry Jeremy Joseph
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 14:18
CPC Classifications
H; H02; H02K; H02K7/00; H02K7/08; H02K7/081; F; F16; F16K; F16K31/00; F16K31/02; F16K31/04; F16K31/047; F16K31/048; F16K31/05; H02K7/10; H02K7/12; F16H; F16H1/00; F16H1/02; F16H1/04; F16H1/12; F16H1/16; Y; Y10; Y10T; Y10T74/00; Y10T74/19; Y10T74/19642; Y10T74/19698; Y10T74/19828; Y10T74/19847
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
131 words
A VALVE ACTUATOR COMPRISING AN OUTPUT SHAFT FOR ACTUATING A VALVE IN OPERABLE ENGAGEMENT THEREWITH, DRIVING MEANS DISPOSED ON SAID INPUT SHAFT, POWER OPERATINGMEANS INCLUDING AN ELECTRIC MOTOR PROVIDED WITH A DRIVING SHAFT HAVING A WORM MOUNTRED THEREON, A WORM WHEEL AXIALLY MOVABLE ON SAID OUTPUT SHAFT FOR NORMALLY ENGAGING SAID DRIVING MEANS AND COUPLING SAID MOTOR THEREWITH, SAID WORM DRIVINGLY ENGAGING SAID WORM WHEEL, MANUAL VALVE OPERATING MEANS MOVABLE TO ENGAGE SAID DRIVING MEANS AND TO DISENGAGE SAID POWER OPERATING MEANS THEREFROM, AND RETAINING MEANS TO HOLD SAID MANUAL VALVE OPERATING MEANS IN ENGAGEMENT WITH SAID DRIVING MEANS, SAID RETAINING MEANS RELASING SAID MANUAL VALVE OPERATING MEANS FROM ENGAGEMENT WITH SAID DRIVING MEANS UPON OPERATION OF SAID POWER OPERATING MEANS SO THAT SAID POWER OPERATING MEANS ENGAGES SAID DRIVING MEANS.
Claim 2
Dependent Claim
131 words
A VALVE ACTUATOR COMPRISING AN OUTPUT SHAFT FOR ACTUATING A VALVE IN OPERABLE ENGAGEMENT THEREWITH, DRIVING MEANS DISPOSED ON SAID INPUT SHAFT, POWER OPERATINGMEANS INCLUDING AN ELECTRIC MOTOR PROVIDED WITH A DRIVING SHAFT HAVING A WORM MOUNTRED THEREON, A WORM WHEEL AXIALLY MOVABLE ON SAID OUTPUT SHAFT FOR NORMALLY ENGAGING SAID DRIVING MEANS AND COUPLING SAID MOTOR THEREWITH, SAID WORM DRIVINGLY ENGAGING SAID WORM WHEEL, MANUAL VALVE OPERATING MEANS MOVABLE TO ENGAGE SAID DRIVING MEANS AND TO DISENGAGE SAID POWER OPERATING MEANS THEREFROM, AND RETAINING MEANS TO HOLD SAID MANUAL VALVE OPERATING MEANS IN ENGAGEMENT WITH SAID DRIVING MEANS, SAID RETAINING MEANS RELASING SAID MANUAL VALVE OPERATING MEANS FROM ENGAGEMENT WITH SAID DRIVING MEANS UPON OPERATION OF SAID POWER OPERATING MEANS SO THAT SAID POWER OPERATING MEANS ENGAGES SAID DRIVING MEANS.
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) | 1968-08-02 | 1969-02-01 | 1969-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-08-02 | 1973-02-01 | 1973-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-08-02 | 1977-02-01 | 1977-08-03 | $7700.00 | Window Closed / Lapsed |