# US 5,702,221 A · Materials handling system > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 5,702,221 A - Document ID: US5702221A - Status: Granted - Kind: A - Application number: 08/759,931 - Filed: 1996-12-04 - Granted: 1997-12-30 - Earliest claimed: 1995-03-31 - Assignees: Seabulk Systems Inc. - Inventors: Sidney Sridhar - Web page: https://patentgrep.com/patent/US5702221A ## CPC - B65G 65/44: using reciprocating conveyors, e.g. jigging conveyors - B63B 27/22: of conveyers, e.g. of endless-belt or screw-type {(arrangements of devices with throwing action B63B27/26; arrangements of chutes B63B27/28)} - B65D 90/60: and having one or more openings - B65G: TRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS (packaging B65B; handling thin or filamentary materials, e.g. paper sheets or thread, B65H; cranes B66C; portable mobile or lifting or hauling appliances, e.g. hoists, B66D; devices for lifting or lowering goods for loading or unloading purposes, e.g. fork-lift trucks, B66F9/00; emptying bottles, jars, casks, barrels or similar containers, not otherwise provided for, B67C9/00; delivering or transferring liquids B67D; filling or discharging vessels for liquefied, solidified or compressed gases F17C; pipe-line systems for fluids F17D) - B63B: SHIPS OR OTHER WATERBORNE VESSELS; EQUIPMENT FOR SHIPPING (arrangements of vessel ventilation, heating, cooling, or air-conditioning B63J2/00; floating substructures as supports of dredgers or soil-shifting machines E02F9/06) - B65D: CONTAINERS FOR STORAGE OR TRANSPORT OF ARTICLES OR MATERIALS, e.g. BAGS, BARRELS, BOTTLES, BOXES, CANS, CARTONS, CRATES, DRUMS, JARS, TANKS, HOPPERS, FORWARDING CONTAINERS; ACCESSORIES, CLOSURES, OR FITTINGS THEREFOR; PACKAGING ELEMENTS; PACKAGES ## Abstract A materials handling system for controlling the gravity discharge of material through a discharge opening 33 onto a conveyor 34 comprises a gate 40 extending across the discharge opening 33 and having at least one but preferably a plurality of outlet openings 40.4 therein for the through flow of material from the discharge opening and a feeder deck 60 below the gate 40 having a surface for receiving material discharged from the discharge opening 33 through the gate 40. The feeder deck surface is movable transversely of the discharge opening 33 for controlling the flow of material through the gate 40 and for discharging the material onto the conveyor 34. The materials handling system can be employed for controlling the gravity discharge of material from a plurality of in-line domes 100 or from a plurality of holds 112 of a self-unloading ship 110. ## Claims ### Claim 1 A materials handling system for controlling the gravity discharge of material through a discharge opening onto a conveyor, which discharge opening has a width dimension in a horizontal direction, the system comprising: a gate extending across said discharge opening and having at least one outlet opening, of a smaller dimension than said discharge opening, therein for the through flow of material from the discharge opening through the gate; a feeder deck below the gate having a surface for receiving material discharged from the discharge opening through the gate, said feeder deck surface being mounted for translational movement transversely of said gate for controlling the flow of material through said gate and for discharging the material onto said conveyor. ### Claim 2 (depends on 1) The materials handling system of claim 1, wherein said gate is movable transversely of said discharge opening for relocating the outlet opening of the gate along the width of the discharge opening. ### Claim 3 (depends on 2) The materials handling system of claim 2, wherein the gate has a plurality of said outlet openings therein for the through flow of material. ### Claim 4 (depends on 1) The materials handling system of claim 1, for controlling the gravity discharge of material through a plurality of laterally spaced discharge openings, comprising one of said gates for each discharge opening, said feeder deck being selectively movable between said discharge openings and further comprising a power source for moving said feeder deck between said discharge openings. ### Claim 5 (depends on 4) The materials handling system of claim 4, further comprising a closure plate for each said outlet opening in each gate for opening and closing said outlet openings. ### Claim 6 (depends on 5) The materials handling system of claim 5, wherein said closure plates for each gate are located on a supporting framework located beneath the gate and movable relative to the gate. ### Claim 7 (depends on 4) The materials handling system of claim 4, wherein said power source comprises a wheeled unit running on a track extending between the discharge openings for movement of the power source from one discharge opening to another. ### Claim 8 (depends on 7) The materials handling system of claim 7, wherein the feeder deck is connected to the wheeled unit for movement along with the wheeled unit from one discharge opening to another. ### Claim 9 (depends on 8) The materials handling system of claim 8, wherein the wheeled unit is provided with a hydraulic cylinder which is selectively connectable to each one of said gates for effecting the movement of each gate relative to its respective discharge opening. ### Claim 10 (depends on 9) The materials handling system of claim 9, wherein an opposing pair of said wheeled units is provided for effecting movement of each gate in opposite directions. ### Claim 11 (depends on 9) The materials handling system according to claim 9, wherein said discharge openings are the discharge openings of a plurality of in-line hoppers. ### Claim 12 (depends on 9) The materials handling system according to claim 9, wherein said discharge openings are the discharge openings of a plurality of in-line holds on a self-unloading ship. ### Claim 13 (depends on 12) A self-unloading ship provided with a materials handling system according to claim 12. ### Claim 14 (depends on 9) The materials handling system of claim 9 wherein each of said gates has a plurality of said outlet openings therein for the throughflow of material. ### Claim 15 (depends on 14) The materials handling system of claim 14, wherein said feeder deck comprises an endless belt mounted for rotation about a pair of spaced rollers for each one of said plurality of gate outlet openings, said pairs of spaced rollers being interconnected by means of a chain drive, and including a drive sprocket on said wheeled unit for driving said chain drive.