Patent US3391722A successfully refreshed from Google Patents.
US3391722A
Expired / Lapsed
US
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Motion transforming actuator particularly for hatch covers
Assignee: Individual
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Filing: 1964-01-10
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Granted: 1968-07-09
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Expires: 1984-01-10
Abstract
No abstract record available.
Inventors
- 👤 David R Ligh
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 13:54
CPC Classifications
F; F15; F15B; F15B15/00; F15B15/02; F15B15/06; F15B15/068; B; B60; B60G; B60G21/00; B60G21/02; B60G21/04; B60G21/05; B60G21/055; B60G21/0551; B60G21/0553; B60G21/0555; B63; B63B; B63B19/00; B63B19/12; B63B19/14; B63B19/19; B63B19/197; Y; Y10; Y10T; Y10T74/00; Y10T74/18; Y10T74/18568
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
103 words
AN ACTUATOR COMPRISING, IN COMBINATION, A TURNABLE FIRST MEMBER HAVING AN AXIS AND AT LEAST PARTLY HELICAL SLOTS INCLUDING SLOT PORTIONS HAVING DIFFERENT HELIX ANGLES; A GUIDE MEMBER ADJACENT SAID FIRST MEMBER, AND HAVING STRAIGHT SLOTS CROSSING SAID HELICAL SLOTS; SUPPORT MEANS FIXEDLY SUPPORTING SAID GUIDE MEMBER AND TURNABLY SUPPORTING SAID FIRST MEMBER; A SECOND MEMBER HAVING FORCETRANSMITTING ARMS RADIALLY PROJECTING THROUGH CROSSING PORTIONS OF SAID HELICAL AND STRAIGHT SLOTS AND ENGAGING SAID SLOTS WITH RADIALLY ADJACENT PORTIONS; AND OPERATING MEANS FOR RECIPROCATING SAID SECOND MEMBER IN THE DIRECTION OF SAID STRAIGHT SLOTS WHEREBY SAID FIRST MEMBER IS TURNED BY SAID FORCE-TRANSMITTING ARMS.
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) | 1971-07-09 | 1972-01-08 | 1972-07-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-07-09 | 1976-01-08 | 1976-07-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-07-09 | 1980-01-08 | 1980-07-09 | $7700.00 | Window Closed / Lapsed |