US3626784A
Expired / Lapsed
US
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Linkage system
Assignee: Forney Engineering Co
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Filing: 1969-10-20
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Granted: 1971-12-14
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Expires: 1989-10-20
Abstract
Abstract A LINKAGE SYSTEM FOR CONNECTING AN ACTUATOR TO AN OUTPUT MEMBER, WHEREIN A FIRST LINKAGE ARM IS CONNECTED TO THE OUTPUT SHAFT OF THE ACTUATOR AND OSCILLATES IN RESPONSE TO AN INPUT TORQUE FROM THE ACTUATOR OUTPUT SHAFT, AND A SECOND LINKAGE ARM IS CONNECTED BETWEEN THE FIRST ARM AND THE OUTPUT MEMBER AND APPLIES AN OUTPUT TORQUE TO THE OUTPUT MEMBER IN RESPONSE TO THE OSCILLATION OF THE FIRST ARM. THE EFFECTIVE LEVER ARM OF THE FIRST LINKAGE ARM IS REGULATED SO THAT THE OUTPUT TORQUE TO THE OUTPUT MEMBER IS AT LEAST EQUAL TO THE INPUT TORQUE FROM THE ACTUATOR OUTPUT SHAFT.
Inventors
- 👤 Burford L Johnson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 19:42
CPC Classifications
F; F16; F16H; F16H35/00; F16H37/00; F16H37/12; F16K; F16K31/00; F16K31/44; F16K31/52; F16K31/528; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18056; Y10T74/18232; Y10T74/1824; Y10T74/20; Y10T74/20558; Y10T74/2057
Claims Analysis
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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) | 1974-12-13 | 1975-06-14 | 1975-12-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-12-13 | 1979-06-14 | 1979-12-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-12-13 | 1983-06-14 | 1983-12-14 | $7700.00 | Window Closed / Lapsed |