Patent US3708056A successfully refreshed from Google Patents.
US3708056A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Device for removing bulk material from storage
Assignee: Gustav Schade Maschinenfabrik GmbH and Co
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Filing: 1971-02-02
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Granted: 1973-01-02
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Expires: 1991-02-02
Abstract
Abstract A device for removing bulk material from storage in a dump pile includes at least one scraper arranged to be raised and lowered on a gantry spanning the dump.
Inventors
- 👤 G Strocker
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 15:46
CPC Classifications
B; B65; B65G; B65G65/00; B65G65/02; B65G65/06
Claims Analysis
Total Claims: 19
Claim 1
Independent Claim
96 words
A device for removing material from a storage dump pile having a predetermined width and a sloping face, said device including a movable gantry spanning said dump pile and being movable along said pile in a direction of movement, scraper means movably supported by said gantry for raising and lowering movement in a substantially horizontal position for removing material from said pile, and clearing means supported by said gantry in a position offset from said scraper means parallel to said direction of movement of said gantry for clearing material from said sloping face of said pile.
Claim 2
Independent Claim
96 words
A device for removing material from a storage dump pile having a predetermined width and a sloping face, said device including a movable gantry spanning said dump pile and being movable along said pile in a direction of movement, scraper means movably supported by said gantry for raising and lowering movement in a substantially horizontal position for removing material from said pile, and clearing means supported by said gantry in a position offset from said scraper means parallel to said direction of movement of said gantry for clearing material from said sloping face of said pile.
Claim 3
Dependent Claim
23 words
The device of claim 1 wherein said clearing means comprises two subsidiary scrapers supported by said gantry on opposite sides of said scraper.
Claim 4
Dependent Claim
30 words
The device of claim 1 wherein said scraper means comprises a pair of scrapers positioned in parallel spaced-apart relationship and said clearing means is positioned between said pair of scrapers.
Claim 5
Dependent Claim
18 words
The device of claim 2 and further including adjustment means for adjusting the position of said subsidiary scrapers.
Claim 6
Dependent Claim
13 words
The device of claim 4 wherein said clearing means comprises a subsidiary scraper.
Claim 7
Dependent Claim
52 words
The device of claim 1 wherein said scraper means has opposite end portions, suspension means movably suspending said scraper means from said gantry for raising and lowering movement in a substantially horizontal position, said suspension means being connected to said scraper means in at least two spaced-apart points intermediate said end portions.
Claim 8
Dependent Claim
30 words
The device of claim 6 wherein said gantry haS spaced-apart upright legs, and lateral support means for laterally supporting said opposite end portions of said scraper means on said legs.
Claim 9
Dependent Claim
40 words
The device of claim 1 wherein said clearing means comprises a subsidiary scraper having opposite end portions, and articulation means supporting at least one of said end portions on said gantry for raising and lowering movement of said subsidiary scraper.
Claim 10
Dependent Claim
35 words
The device of claim 1 wherein said scraper means has opposite end portions and said gantry includes support means for movably supporting said opposite end portions for raising and lowering movement of said scraper means.
Claim 11
Dependent Claim
25 words
The device of claim 9 wherein said support means comprises substantially vertical guideways on said gantry, said opposite end portions being received in said guideways.
Claim 12
Dependent Claim
37 words
The device of claim 9 wherein said support means comprises fixed bearing means for movably supporting one end of said scraper means and loose bearing means for movably supporting the other end portion of said scraper means.
Claim 13
Independent Claim
163 words
A device for removing material from storage in a dump pile which is elongated along a predetermined path and having a substantially trapezoidal cross-sectional configuration transversely of said path and including an upper surface and opposite sloping surfaces sloping downwardly and outwardly from said upper surface, said pile having a predetermined base width, a movable gantry spanning said pile transversely of said path for movement relative to said pile along said path, scraper means having a length substantially equal to said base width of said pile for operating on said upper surface of said pile to scrape material toward one of said sloping surfaces, suspension means for movably suspending said scraper means from said gantry for raising and lowering movement in a substantially horizontal position, clearing means independent of said scraper means for clearing material from said one sloping face of said pile, support means independent of said suspension means for supporting said clearing means from said gantry independently of said scraper means.
Claim 14
Independent Claim
163 words
A device for removing material from storage in a dump pile which is elongated along a predetermined path and having a substantially trapezoidal cross-sectional configuration transversely of said path and including an upper surface and opposite sloping surfaces sloping downwardly and outwardly from said upper surface, said pile having a predetermined base width, a movable gantry spanning said pile transversely of said path for movement relative to said pile along said path, scraper means having a length substantially equal to said base width of said pile for operating on said upper surface of said pile to scrape material toward one of said sloping surfaces, suspension means for movably suspending said scraper means from said gantry for raising and lowering movement in a substantially horizontal position, clearing means independent of said scraper means for clearing material from said one sloping face of said pile, support means independent of said suspension means for supporting said clearing means from said gantry independently of said scraper means.
Claim 15
Dependent Claim
32 words
The device of claim 12 wherein said clearing means is supported on said gantry in an inclined angular position substantially corresponding to the angle of repose of material in said dump pile.
Claim 16
Dependent Claim
47 words
The device of claim 12 wherein said clearing means comprises subsidiary scraper means having opposite end portions, and said support means including articulation means for supporting at least one of said end portions for raising and lowering movement relative to said gantry independently of said scraper means.
Claim 17
Dependent Claim
34 words
The device of claim 12 wherein said scraper means has opposite end portions and said suspension means is connected with said scraper means in at least two spaced-apart points intermediate said opposite end portions.
Claim 18
Dependent Claim
52 words
The device of claim 15 wherein said gantry includes lateral support means for laterally supporting said end portions of said scraper means against shifting movement of said scraper means relative to said gantry in a direction parallel to the direction in which said gantry moves relative to said pile along said path.
Claim 19
Dependent Claim
22 words
The device of claim 16 wherein said gantry includes spaced-apart upright legs having substantially vertical guideways thereon defining said lateral support means.
References Cited (Backward Citations)
US1570360A
Cited
US1574143A
Cited
DE603086C
Cited
DE1127806B
Cited
US3509985A
Cited
US3557934A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-02 | 1976-07-03 | 1977-01-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-02 | 1980-07-03 | 1981-01-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-02 | 1984-07-03 | 1985-01-02 | $7700.00 | Window Closed / Lapsed |