Patent FR778238A successfully refreshed from Google Patents.
Patent US3877587A successfully refreshed from Google Patents.
US3877587A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Discharging means for vessels for storing powder, grain and the like
Assignee: Mitsui Engineering and Shipbuilding Co Ltd
•
Filing: 1974-03-18
•
Granted: 1975-04-15
•
Expires: 1994-03-18
Abstract
Abstract Discharge means for vessels for storing powder, grain and the like having an inverted conical structure and an annular outlet opening at the bottom thereof, comprising a table provided below the outlet opening for receiving the material in the vessel means for scraping off the material dropped on the table, and means for conveying the dropped material from the table.
Inventors
- 👤 Takuji Ishizaki
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 13:31
CPC Classifications
B; B65; B65G; B65G65/00; B65G65/30; B65G65/34; B65G65/40; B65G65/48; B65G65/4809; B65G65/4836; B65G65/4854; B65G65/4818
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
111 words
A discharging means for material containing vessels having an inverted conical structure and having an annular outlet opening at the bottom thereof, comprising a stationary annular table provided below and in the vicinity of the annular outlet opening to receive material therefrom, scrapers disposed on each side of said annular table and in close proximity to the surface thereof, rotatable annular inner and outer tables provided below and in the vicinity of said stationary annular table and adapted to receive material scraped from said stationary table, and stationary scrapers extending in close proximity to the surfaces of said inner and outer tables, whereby the discharged material can be successively scraped off.
Claim 2
Dependent Claim
111 words
A discharging means for material containing vessels having an inverted conical structure and having an annular outlet opening at the bottom thereof, comprising a stationary annular table provided below and in the vicinity of the annular outlet opening to receive material therefrom, scrapers disposed on each side of said annular table and in close proximity to the surface thereof, rotatable annular inner and outer tables provided below and in the vicinity of said stationary annular table and adapted to receive material scraped from said stationary table, and stationary scrapers extending in close proximity to the surfaces of said inner and outer tables, whereby the discharged material can be successively scraped off.
References Cited (Backward Citations)
US3713552A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-04-14 | 1978-10-14 | 1979-04-15 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-04-14 | 1982-10-14 | 1983-04-15 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-04-14 | 1986-10-14 | 1987-04-15 | $7700.00 | Window Closed / Lapsed |