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US3604574A Expired / Lapsed US ⏱️ 0.0 years remaining

Apparatus for unloading bulk material from a storage enclosure

Assignee: Upper Lakes Shipping Ltd
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Filing: 1969-07-07
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Granted: 1971-09-14
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Expires: 1989-07-07
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Abstract

Abstract A wheeled reclaimer for dislodging material in the hold of a ship consisting of a frame which carries chain driven horizontally disposed spaced apart bars, the latter having outwardly disposed prongs which dig into the material on activation of the chains.

Inventors

  • 👤 John Daniel Leitch

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-05 16:53
CPC Classifications
B; B65; B65G; B65G65/00; B65G65/02; B65G65/16; B65G65/22; B63; B63B; B63B27/00; B63B27/22

Claims Analysis

Total Claims: 2
Claim 1
Independent Claim 198 words
In a cargo vessel, apparatus for unloading bulk material from a cargo hold thereof having sidewalls, a floor, a longitudinally extending channel beneath said floor, and a longitudinally extending conveyor within said channel; a reclaimer for moving material across said floor into said channel and on to said conveyor, said reclaimer comprising a wheeled undercarriage having a frame adapted to be moved longitudinally of the enclosure, rake means mounted on said wheeled undercarriage for dislodging material piled within said enclosure, said rake means extending forwardly of said undercarriage, said rake means including a rake frame, a plurality of spaced-apart movable bars on said rake frame, said bars being substantially normal with respect to said sidewalls, said bars having a plurality of prongs extending outwards with respect to said frame, and means for propelling said bars on said rake frame; said rake means being spaced forwardly from said undercarriage by substantially rigid upper and lower beam means secured to said rake frame and to said undercarriage frame; said rake means being pivotably mounted on said lower beam means, and said upper beam means being movable forwardly and backwardly with respect to the direction of movement of said wheeled undercarriage.
Claim 2
Dependent Claim 33 words
A reclaimer in accordance with claim 1, wherein said means for propelling said bars include a plurality of chain drives secured to said bars, said chain drives being substantially normal to said bars.

References Cited (Backward Citations)

US1829923A Cited
US2529263A Cited
US2579153A Cited
US3148784A Cited
GB1059607A Cited
US3384248A Cited
US3487910A Cited

USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1974-09-13 1975-03-15 1975-09-14 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 1978-09-13 1979-03-15 1979-09-14 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 1982-09-13 1983-03-15 1983-09-14 $7700.00 Window Closed / Lapsed

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