US3625002A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Electrical actuator
Assignee: Integrated Development and Manufacturing
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Filing: 1969-10-21
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Granted: 1971-12-07
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Expires: 1989-10-21
Abstract
Abstract THE DRAWINGS DISCLOSE AND ELECTRICAL ACTUATOR FOR VALVES CONTROLS, AND THE LIKE. THE ACTUATOR SHOWN COMPRISES A DRIVE PLATE ADAPTED TO ACT AGAINST A DRIVEN MEMBER. THE DRIVE PLATE IS CONTINUOUSLY BIASED IN A FIRST DIRECTION BY AN ADJUSTABLY MOUNTED SPRING. AT LEAST ONE ELONGATED RESISTANCE WIRE MEMBER IS CONNECTED WITH THE PLATE TO ACT AGAINST THE SPRING. ADDITIONALLY, MEANS ARE SHOWN FOR SUPPLYING ELECTRIC CURRENT TO WIRE MEMBER TO CAUSE IT TO EXPAND OR CONTRACT TO PRODUCE CONTROLLED MOVEMENT OF THE DRIVE PLATE.
Inventors
- 👤 Noel Davis
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 07:58
CPC Classifications
F; F16; F16K; F16K31/00; F16K31/02; F16K31/025; F03; F03G; F03G7/00; F03G7/06; F03G7/061; F03G7/06114
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-12-06 | 1975-06-07 | 1975-12-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-06 | 1979-06-07 | 1979-12-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-06 | 1983-06-07 | 1983-12-07 | $7700.00 | Window Closed / Lapsed |