Patent US3190468A successfully refreshed from Google Patents.
US3190468A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Bin unloader
Assignee: Copeland Industrial LP
•
Filing: 1963-11-20
•
Granted: 1965-06-22
•
Expires: 1983-11-20
Abstract
No abstract record available.
Inventors
- 👤 Erich J Kocher
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 06:02
CPC Classifications
B; B65; B65D; B65D88/00; B65D88/54; B65D88/64; B65D88/66
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
128 words
IN A CYLINDRICAL HOOPER FOR RECEIVING AND DISCHARGING MATERIAL, A CONICAL BOTTOM WALL FOR SAID HOPPER PROVIDED WITH A CENTRAL DISCHARGE OPENING, A DISCHARGE CHUTE DEPENDING FROM SAID BOTTOM WALL AT THE DISCHARGE OPENING THEREOF, A SCRAPER CARRIED BY SAID DISCHARGE CHUTE AND EXTENDING ANGULARLY THEREFROM INTO SAID HOPPER AND ADJACENT TO AND PARALLEL WITH THE CONICAL BOTTOM WALL THEREOF FOR LOOSENING AND DIRECTING MATERIAL FROM WITHIN SAID HOPPER TOWARD ITS DISCHARGE OPENING, POWER MEANS FOR DRIVING SAID SCRAPER, AND MEANS FOR MOUNTING AND DETACHABLY SECURING SAID DISCHARGE CHUTE AND SAID POWER MEANS ON THE BOTTOM WALL OF SAID HOOPER WHEREBY SAID CHUTE AND SAID SCRAPER ARE REMOVABLE WITH SAID POWER MEANS AS A UNIT ALONG A PLANE SUBSTANTIALLY PARALLEL WITH THE PLANE OF SAID CONICAL BOTTOM WALL.
Claim 2
Dependent Claim
128 words
IN A CYLINDRICAL HOOPER FOR RECEIVING AND DISCHARGING MATERIAL, A CONICAL BOTTOM WALL FOR SAID HOPPER PROVIDED WITH A CENTRAL DISCHARGE OPENING, A DISCHARGE CHUTE DEPENDING FROM SAID BOTTOM WALL AT THE DISCHARGE OPENING THEREOF, A SCRAPER CARRIED BY SAID DISCHARGE CHUTE AND EXTENDING ANGULARLY THEREFROM INTO SAID HOPPER AND ADJACENT TO AND PARALLEL WITH THE CONICAL BOTTOM WALL THEREOF FOR LOOSENING AND DIRECTING MATERIAL FROM WITHIN SAID HOPPER TOWARD ITS DISCHARGE OPENING, POWER MEANS FOR DRIVING SAID SCRAPER, AND MEANS FOR MOUNTING AND DETACHABLY SECURING SAID DISCHARGE CHUTE AND SAID POWER MEANS ON THE BOTTOM WALL OF SAID HOOPER WHEREBY SAID CHUTE AND SAID SCRAPER ARE REMOVABLE WITH SAID POWER MEANS AS A UNIT ALONG A PLANE SUBSTANTIALLY PARALLEL WITH THE PLANE OF SAID CONICAL BOTTOM WALL.
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) | 1968-06-21 | 1968-12-21 | 1969-06-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1972-06-21 | 1972-12-21 | 1973-06-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1976-06-21 | 1976-12-21 | 1977-06-22 | $7700.00 | Window Closed / Lapsed |