US3216529A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Spring motor drive
Assignee: Individual
•
Filing: 1963-09-23
•
Granted: 1965-11-09
•
Expires: 1983-09-23
Abstract
No abstract record available.
Inventors
- 👤 Lohr Riley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 19:16
CPC Classifications
A; A63; A63H; A63H29/00; A63H29/02; A63H29/04; F; F03; F03G; F03G1/00; F03G1/02; F03G1/022
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
170 words
A SPRING MOTOR DRIVE, COMPRISING, IN COMBINATION, A PRESTRESSED SPRING WOUND UPON ITSELF AND CARRIED BY A ROTATABLE SPOOL, A ROTARY POWER DRUM INCLUDING MEANS FOR RELEASABLY ENGAGING THE FREE OUTER END OF SAID SPRING WHEN SAID DRUM IS ROTATED IN ONE DIRECTION TO PERMIT WINDING OF SID SPRING UPON SAID DRUM, WINDING MEANS FOR ROTATING SAID DRUM TO ENGAGE THE FREE OUTER END OF SAID SPRING TO WIND SAID SPRING AROUND SAID DRUM, SAID WINDING MEANS INCLUDING CLUTCH MEANS PROVIDING DISENGAGEMENT BETWEEN SAID WINDING MEANS AND DRUM AS SAID DRUM ROTATES IN AN UNWINDING DIRECTION, DRIVE MEANS CONNECTED TO SAID DRUM FOR PROVIDING A POWER TAKE-OFF DURING UNWINDING OF SAID DRUM BY SAID SPRING, SAID DRIVE MEANS INCLUDING A PAIR OF GEARS, ONE OF SAID GEARS CONCENTRICALLY MOUNTED ON SAID DRUM, SAID DRUM INCLUDING AN AXIAL SHIFT, PIVOTAL LEVER MEANS OPERABLE TO DISPLACE SAID SHAFT TO DISENGAGE SAID PAIR OF GEARS, AND A LOCKING FINGER ENGAGEABLE BY SAID GEAR DISPLACED WITH SAID SHAFT TO PREVENT ROTATION OF SAID DRUM.
Claim 2
Dependent Claim
170 words
A SPRING MOTOR DRIVE, COMPRISING, IN COMBINATION, A PRESTRESSED SPRING WOUND UPON ITSELF AND CARRIED BY A ROTATABLE SPOOL, A ROTARY POWER DRUM INCLUDING MEANS FOR RELEASABLY ENGAGING THE FREE OUTER END OF SAID SPRING WHEN SAID DRUM IS ROTATED IN ONE DIRECTION TO PERMIT WINDING OF SID SPRING UPON SAID DRUM, WINDING MEANS FOR ROTATING SAID DRUM TO ENGAGE THE FREE OUTER END OF SAID SPRING TO WIND SAID SPRING AROUND SAID DRUM, SAID WINDING MEANS INCLUDING CLUTCH MEANS PROVIDING DISENGAGEMENT BETWEEN SAID WINDING MEANS AND DRUM AS SAID DRUM ROTATES IN AN UNWINDING DIRECTION, DRIVE MEANS CONNECTED TO SAID DRUM FOR PROVIDING A POWER TAKE-OFF DURING UNWINDING OF SAID DRUM BY SAID SPRING, SAID DRIVE MEANS INCLUDING A PAIR OF GEARS, ONE OF SAID GEARS CONCENTRICALLY MOUNTED ON SAID DRUM, SAID DRUM INCLUDING AN AXIAL SHIFT, PIVOTAL LEVER MEANS OPERABLE TO DISPLACE SAID SHAFT TO DISENGAGE SAID PAIR OF GEARS, AND A LOCKING FINGER ENGAGEABLE BY SAID GEAR DISPLACED WITH SAID SHAFT TO PREVENT ROTATION OF SAID DRUM.
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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) | 1968-11-08 | 1969-05-10 | 1969-11-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-11-08 | 1973-05-10 | 1973-11-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-11-08 | 1977-05-10 | 1977-11-09 | $7700.00 | Window Closed / Lapsed |