US3344556A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Door operating device
Assignee: WAYNE-DALTON CORP AN OH CORP
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Filing: 1965-11-18
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Granted: 1967-10-03
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Expires: 1985-11-18
Abstract
No abstract record available.
Inventors
- 👤 Edward T Edwards
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 21:24
CPC Classifications
E; E05; E05F; E05F15/00; E05F15/60; E05F15/603; E05F15/632; E05F15/643; E05Y; E05Y2900/00; E05Y2900/10; E05Y2900/13; E05Y2900/132
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
81 words
A RECIPROCATING ACTUATING MEANS COMPRISING: A UNIDIRECTIONAL ROTATIONAL PRIME MOVER, A SPROCKET DRIVEN BY SAID PRIME MOVER, A FIRST IDLER SPROCKET, SPROCKET CHAIN MEANS REEVED ABOUT SAID DRIVEN AND IDLER SPROCKETS AND FORMING FIRST AND SECOND PARALLEL CONTINUOUS CHAIN SEGMENTS, THEREBETWEEN, BRACKET MEANS, SECOND AND THIRD ACTUATOR SPROCKETS MOUNTED FOR ROTATION UPON SAID BRACKET MEANS, EACH ENGAGING ONE OF SAID FIRST AND SECOND PARALLEL CHAIN SEGMENTS, AND SELECTIVELY OPERATABLE MEANS FOR PREVENTING ROTATIONAL MOVEMENT OF SAID SECOND AND THIRD ACTUATOR SPROCKETS.
Claim 2
Dependent Claim
81 words
A RECIPROCATING ACTUATING MEANS COMPRISING: A UNIDIRECTIONAL ROTATIONAL PRIME MOVER, A SPROCKET DRIVEN BY SAID PRIME MOVER, A FIRST IDLER SPROCKET, SPROCKET CHAIN MEANS REEVED ABOUT SAID DRIVEN AND IDLER SPROCKETS AND FORMING FIRST AND SECOND PARALLEL CONTINUOUS CHAIN SEGMENTS, THEREBETWEEN, BRACKET MEANS, SECOND AND THIRD ACTUATOR SPROCKETS MOUNTED FOR ROTATION UPON SAID BRACKET MEANS, EACH ENGAGING ONE OF SAID FIRST AND SECOND PARALLEL CHAIN SEGMENTS, AND SELECTIVELY OPERATABLE MEANS FOR PREVENTING ROTATIONAL MOVEMENT OF SAID SECOND AND THIRD ACTUATOR SPROCKETS.
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) | 1970-10-02 | 1971-04-03 | 1971-10-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-02 | 1975-04-03 | 1975-10-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-02 | 1979-04-03 | 1979-10-03 | $7700.00 | Window Closed / Lapsed |