US3381832A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Tipper unloader for dragline carts
Assignee: Canadian National Railway Co
•
Filing: 1966-06-13
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Granted: 1968-05-07
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Expires: 1986-06-13
Abstract
No abstract record available.
Inventors
- 👤 Joseph P Vilagos
- 👤 Bowler William
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 11:01
CPC Classifications
B; B65; B65G; B65G67/00; B65G65/00; B65G65/23; B65G2814/00; B65G2814/03; B65G2814/0347; B65G2814/0356; B65G2814/0358
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
72 words
APPARATUS FOR UNLOADING AN OPEN-SIDED CART ON WHICH PARCELS ARE ARRANGED IN SUPERIMPOSED LAYERS, COMPRISING AN INCLINED WALL SURFACE OF GRADUALLY DECREASING HEIGHT TOWARD ONE END THEREOF, MEANS FOR TILTING THE CART AGAINST SAID INCLINED SURFACE, MEANS FOR MOVING THE TILTED CART ALONG THE LENGTH OF THE WALL IN THE DIRECTION OF THE END OF THE WALL TOWARD WHICH THE HEIGHT OF THE WALL DECREASES TO EFFECT DISCHARGE OF SUCCESSIVE LAYERS OF
Claim 2
Dependent Claim
72 words
APPARATUS FOR UNLOADING AN OPEN-SIDED CART ON WHICH PARCELS ARE ARRANGED IN SUPERIMPOSED LAYERS, COMPRISING AN INCLINED WALL SURFACE OF GRADUALLY DECREASING HEIGHT TOWARD ONE END THEREOF, MEANS FOR TILTING THE CART AGAINST SAID INCLINED SURFACE, MEANS FOR MOVING THE TILTED CART ALONG THE LENGTH OF THE WALL IN THE DIRECTION OF THE END OF THE WALL TOWARD WHICH THE HEIGHT OF THE WALL DECREASES TO EFFECT DISCHARGE OF SUCCESSIVE LAYERS OF
References Cited (Backward Citations)
US1135669A
Cited
US2290844A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1971-05-07 | 1971-11-06 | 1972-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1975-05-07 | 1975-11-06 | 1976-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1979-05-07 | 1979-11-06 | 1980-05-07 | $7700.00 | Window Closed / Lapsed |