US3349970A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Hopper for spreader apparatus
Assignee: CENTRAL ENGINEERING Co IN
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Filing: 1965-12-22
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Granted: 1967-10-31
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Expires: 1985-12-22
Abstract
No abstract record available.
Inventors
- 👤 Daneman Ben
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 08:23
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/12; E01C19/20; E01C19/201; E01C19/202; E01C19/203
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
201 words
IN SPREADER APPARATUS FOR MOUNTING BELOW THE MATERIAL DISCHARGE OPENING OF VEHICLE-MOUNTED DUMP BOX, A HOPPER BODY COMPRISING AN INNER WALL, END WALLS AND A BOTTOM WALL, WITH THE BOTTOM WALL HAVING A DISCHARGE OPENING FOR THE DISCHARGE OF MATERIAL FROM THE HOPPER BODY FOR SPREADING, A COVER PLATE MOVABLE BETWEEN A COVERING POSITION, IN WHICH THE COVER PLATE EXTENDS ACROSS THE TOP OF THE HOPPER BODY TO COVER THE SAME AND PERMIT MATERIAL IN THE DUMP BOX TO BE DISCHARGED FROM THE MATERIAL DISCHARGE OPENING OF THE DUMP BOX OVER THE TOP OF THE HOPPER BODY WITHOUT PASSING THROUGH THE HOPPER BODY, AND A BACKING POSITION, IN WHICH THE COVER PLATE EXTENDS UPWARDLY FROM AND IS IN SUBSTANTIALLY MATERIAL-TIGHT COMMUNICATION WITH THE BOTTOM WALL OF THE HOPPER BODY TO PROVIDE AN OUTER WALL FOR THE HOPPER BODY AND TO GUIDE MATERAL FROM THE MATERIAL DISCHARGE OPENING OF THE DUMP BOX THROUGH THE OPEN TOP OF THE HOPPER BODY AND INTO THE HOPPER BODY FOR SPREADING, AND MEANS FOR SUPPORTING THE COVER PLATE IN THE COVERING AND BACKING POSITIONS AND FOR EFFECTING SUBSTANTIALLY MATERAL-TIGHT COMMUNICATION BETWEEN THE BOTTOM WALL OF THE HOPPER BODY AND THE COVER PLATE IN THE BACKING POSITION.
Claim 2
Dependent Claim
201 words
IN SPREADER APPARATUS FOR MOUNTING BELOW THE MATERIAL DISCHARGE OPENING OF VEHICLE-MOUNTED DUMP BOX, A HOPPER BODY COMPRISING AN INNER WALL, END WALLS AND A BOTTOM WALL, WITH THE BOTTOM WALL HAVING A DISCHARGE OPENING FOR THE DISCHARGE OF MATERIAL FROM THE HOPPER BODY FOR SPREADING, A COVER PLATE MOVABLE BETWEEN A COVERING POSITION, IN WHICH THE COVER PLATE EXTENDS ACROSS THE TOP OF THE HOPPER BODY TO COVER THE SAME AND PERMIT MATERIAL IN THE DUMP BOX TO BE DISCHARGED FROM THE MATERIAL DISCHARGE OPENING OF THE DUMP BOX OVER THE TOP OF THE HOPPER BODY WITHOUT PASSING THROUGH THE HOPPER BODY, AND A BACKING POSITION, IN WHICH THE COVER PLATE EXTENDS UPWARDLY FROM AND IS IN SUBSTANTIALLY MATERIAL-TIGHT COMMUNICATION WITH THE BOTTOM WALL OF THE HOPPER BODY TO PROVIDE AN OUTER WALL FOR THE HOPPER BODY AND TO GUIDE MATERAL FROM THE MATERIAL DISCHARGE OPENING OF THE DUMP BOX THROUGH THE OPEN TOP OF THE HOPPER BODY AND INTO THE HOPPER BODY FOR SPREADING, AND MEANS FOR SUPPORTING THE COVER PLATE IN THE COVERING AND BACKING POSITIONS AND FOR EFFECTING SUBSTANTIALLY MATERAL-TIGHT COMMUNICATION BETWEEN THE BOTTOM WALL OF THE HOPPER BODY AND THE COVER PLATE IN THE BACKING POSITION.
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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) | 1970-10-30 | 1971-05-01 | 1971-10-31 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1974-10-30 | 1975-05-01 | 1975-10-31 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1978-10-30 | 1979-05-01 | 1979-10-31 | $7700.00 | Window Closed / Lapsed |