US3614899A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hermetically sealed elbow actuator
Assignee: National Aeronautics and Space Administration
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Filing: 1969-08-25
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Granted: 1971-10-26
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Expires: 1989-08-25
Abstract
Abstract A HERMETICALLY SEALED ELBOW ACTUATOR COMPRISING FIRST AND SECOND PAIRS OF PIVOTALLY CONNECTED ANGULAR ACTUATING ELEMENTS ARRANGED BETWEEN A BASE MEMBER AND A HEAD MEMBER. THE BASE MEMBER HOUSES A MOTOR THAT FORCES INCREMENTAL DEFLECTION OF THE ACTUATING ELEMENTS AND THE HEAD MEMBER THROUGH A SYSTEM OF DRIVE RODS AND EXPANDABLE LINKAGES. LIMITED DEFLECTION OF EACH PAIR OF ACTUATING ELEMENTS PERMITS ALL OF THE MOVING PARTS, INCLUDING THE MOTOR, TO BE HERMETICALLY SEALED BY A METALLIC BELLOWS SINCE THE DEFLECTION OF EACH PAIR OF ACTUATING ELEMENTS IS SMALL ENOUGH TO BE WITHIN THE BENDING TOLERANCE OF THE BELLOWS.
Inventors
- 👤 Hans F Wuenscher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 18:27
CPC Classifications
B; B25; B25J; B25J17/00; B25J17/02; B25J17/0241; F; F16; F16H; F16H21/00; F16H21/10; F16J; F16J15/00; F16J15/50; F16J15/52; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18888; Y10T74/1892; Y10T74/18944
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1974-10-25 | 1975-04-26 | 1975-10-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-10-25 | 1979-04-26 | 1979-10-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-10-25 | 1983-04-26 | 1983-10-26 | $7700.00 | Window Closed / Lapsed |