Patent US3071239A successfully refreshed from Google Patents.
US3071239A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Conveyor unloading mechanism
Assignee: Stewart Warner Corp
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Filing: 1958-10-28
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Granted: 1963-01-01
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Expires: 1978-10-28
Abstract
No abstract record available.
Inventors
- 👤 Burtness Roger William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-31 19:39
CPC Classifications
B; B65; B65G; B65G47/00; B65G47/74; B65G47/82
Claims Analysis
Total Claims: 1
Claim 1
Independent Claim
122 words
A MECHANISM FOR UNLOADING PACKAGES FROM A PACKAGE-BEARING SURFACE OF A CONVEYOR ONTO A SLOW OPERATING UNLOADING RAMP COMPRISING AT LEAST ONE PAIR OF SPACED SPROCKET WHEELS, SAID WHEELS BEING ROTATABLE ABOUT RESPECTIVE PARALLEL AXES DISPOSED ON OPPOSITE SIDES OF THE PACKAGE-BEARING SURFACE OF THE CONVEYOR, MEANS INCLUDING THE SPROCKET WHEELS FOR SUPPORTING THE CHAIN WITH ONE CHAIN PATH SECTION FROM ONE SPROCKET WHEEL TO THE OTHER BEING ADJACENT AND SUBSTANTIALLY TRANSVERSE TO THE DIRECTION OF MOVEMENT OF THE SURFACE, A PLURALITY OF PACKAGE ENGAGING PADDLES NON-PIVOTABLY SECURED TO SAID CHAIN WHEREBY THEY ALWAYS EXTEND FROM THE CHAIN AT A FIXED ANGLE THERETO, SAID PADDLES BEING SUBSTANTIALLY EQUALLY SPACED ABOUT THE CHAIN PATH AT A DISTANCE FROM ONE ANOTHER AT LEAST SLIGHTLY
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) | 1965-12-31 | 1966-07-02 | 1967-01-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1969-12-31 | 1970-07-02 | 1971-01-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1973-12-31 | 1974-07-02 | 1975-01-01 | $7700.00 | Window Closed / Lapsed |