US3342358A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Container dumping devices
Assignee: Dempster Systems Inc
•
Filing: 1965-12-15
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Granted: 1967-09-19
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Expires: 1985-12-15
Abstract
No abstract record available.
Inventors
- 👤 Henry C French
- 👤 Charles R Toppins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 16:42
CPC Classifications
B; B65; B65G; B65G65/00; B65G65/23; B65F; B65F1/00; B65F1/12; B65F1/122; B65F1/14; B65F1/1452
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
140 words
A DEVICE FOR DUMPING A CONTAINER COMPRISING LIFTING ARMS SPACED APART, A TORQUE SHAFT EXTENDING BETWEEN THE ONE ENDS OF THE RESPECTIVE LIFTING ARMS AND JOURNALED THEREON, FORK STRUCTURE ON THE TORQUE SHAFT FOR LIFTING THE CONTAINER TO A DUMPING POSITION UPON SWINGING MOVEMENT OF THE LIFTING ARMS AND SEPARABLE FROM THE CONTAINER, A SECOND ARM EXTENDNG PARALLEL TO EACH OF SAID LIFTING ARMS AND HAVING AN END ADJACENT SAID ONE END OF THE LIFTING ARM, A LEVER MEMBER OPERATIVELY CONNECTING SAID END OF THE SECOND ARM WITH THE TORQUE SHAFT, MEANS PIVOTALLY MOUNTING THE ARMS FOR SWINGING MOVEMENT, AND POWER MEANS OPERATIVELY CONNECTED WITH THE LIFTING ARMS FOR SWINGING THE ARMS TO MOVE THE CONTAINER, SAID LEVER MEMBER CAUSING TURNING MOVEMENT OF THE TORQUE SHAFT TO MAINTAIN THE CONTAINER SUBSTANTIALLY LEVEL DURING SAID SWINGING MOVEMENT OF THE LIFTING ARMS.
Claim 2
Independent Claim
140 words
A DEVICE FOR DUMPING A CONTAINER COMPRISING LIFTING ARMS SPACED APART, A TORQUE SHAFT EXTENDING BETWEEN THE ONE ENDS OF THE RESPECTIVE LIFTING ARMS AND JOURNALED THEREON, FORK STRUCTURE ON THE TORQUE SHAFT FOR LIFTING THE CONTAINER TO A DUMPING POSITION UPON SWINGING MOVEMENT OF THE LIFTING ARMS AND SEPARABLE FROM THE CONTAINER, A SECOND ARM EXTENDNG PARALLEL TO EACH OF SAID LIFTING ARMS AND HAVING AN END ADJACENT SAID ONE END OF THE LIFTING ARM, A LEVER MEMBER OPERATIVELY CONNECTING SAID END OF THE SECOND ARM WITH THE TORQUE SHAFT, MEANS PIVOTALLY MOUNTING THE ARMS FOR SWINGING MOVEMENT, AND POWER MEANS OPERATIVELY CONNECTED WITH THE LIFTING ARMS FOR SWINGING THE ARMS TO MOVE THE CONTAINER, SAID LEVER MEMBER CAUSING TURNING MOVEMENT OF THE TORQUE SHAFT TO MAINTAIN THE CONTAINER SUBSTANTIALLY LEVEL DURING SAID SWINGING MOVEMENT OF THE LIFTING ARMS.
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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) | 1970-09-18 | 1971-03-20 | 1971-09-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-09-18 | 1975-03-20 | 1975-09-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-09-18 | 1979-03-20 | 1979-09-19 | $7700.00 | Window Closed / Lapsed |