US3606964A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gravel spreader
Assignee: Individual
•
Filing: 1969-08-28
•
Granted: 1971-09-21
•
Expires: 1989-08-28
Abstract
Abstract A HOPPER AND CONVEYOR UNIT ADAPTED TO RECEIVE GRAVEL OR THE LIKE FROM A HAULING TRUCK HAS AN ENDLESS CONVEYOR EXTENDING CROSSWISE OF THE ROADWAY AND EFFECTIVE TO DELIVER GRAVEL FROM THE HOPPER TO A BOX EXTENDING CROSSWISE OVER THE SHOULDER OF THE ROADWAY, THIS BOX HAVING A PERFORATED BOTTOM WITH MEANS FOR RECIPROCATING THE PERFORATED BOTTOM WHEREBY THE GRAVEL IS EVENLY SHAKEN OUT UPON THE SHOULDER, TOGETHER WITH A CONTROL GATE FOR VARY- ING THE NUMBER OF PERFORATIONS IN THE BOTTOM FREE TO DISCHARGE GRAVEL.
Inventors
- 👤 Earl H Ensinger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-30 07:52
CPC Classifications
E; E01; E01C; E01C19/00; E01C19/12; E01C19/20; E01C19/201; E01C19/2015; B; B65; B65G; B65G47/00; B65G2811/00; B65G2811/06; B65G2811/0673; B65G2811/0689; B65G2811/0694; E01C2019/2055; E01C2019/207; E01C2019/2075
Claims Analysis
Total Claims: 0
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References Cited (Backward Citations)
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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) | 1974-09-20 | 1975-03-22 | 1975-09-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-09-20 | 1979-03-22 | 1979-09-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-09-20 | 1983-03-22 | 1983-09-21 | $7700.00 | Window Closed / Lapsed |