Device for feeding fluids
First Claim
1. An apparatus for dispensing particulate matter from a supply bin to a coater for rapid prototyping, comprising a plough that has a width essentially equal to that of the supply bin and laterally moves at least partially in and out of the supply bin and pushes the particulate matter from the supply bin, through an aperture in the supply bin, to the coater and which when the plough is retracted, pushes the particulate matter out of the supply bin across its width and closes the aperture in the supply bin, whereby there is an adequate quantity of the particulate matter above the plough, further wherein the aperture is dimensioned such that when the plough is at a protracted position outwards of the supply bin the particulate matter is hindered from flowing out due to a seal formed by an angle of repose of the particulate matter at the aperture.
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Accused Products
Abstract
The present invention relates to an apparatus for dispensing fluids, especially particulate matter, from a supply bin. The apparatus includes a plough that is movable at least partially in and out of the bin and which, when retracted, closes a matching aperture in the bin, whereby there is an adequate quantity of fluid above the plough.
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Citations
14 Claims
- 1. An apparatus for dispensing particulate matter from a supply bin to a coater for rapid prototyping, comprising a plough that has a width essentially equal to that of the supply bin and laterally moves at least partially in and out of the supply bin and pushes the particulate matter from the supply bin, through an aperture in the supply bin, to the coater and which when the plough is retracted, pushes the particulate matter out of the supply bin across its width and closes the aperture in the supply bin, whereby there is an adequate quantity of the particulate matter above the plough, further wherein the aperture is dimensioned such that when the plough is at a protracted position outwards of the supply bin the particulate matter is hindered from flowing out due to a seal formed by an angle of repose of the particulate matter at the aperture.
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12. An apparatus for dispensing particulate matter from a supply bin to a coater for rapid prototyping, comprising a plough that has a width essentially equal to that of the supply bin and laterally moves at least partially in and out of the supply bin and pushes the particulate matter from the supply bin, through an aperture in the supply bin, to the coater and which when the plough is retracted, pushes the particulate matter out of the supply bin across its width and closes the aperture in the supply bin, whereby there is an adequate quantity of the particulate matter above the plough, wherein below the supply bin is a metering device in the coater, which is used for dispensing the particulate matter on to a surface to be coated.
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13. A method of rapid prototyping a part by filling a coater with a predetermined amount of a particulate matter from a supply bin comprising the steps of:
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a. providing a supply bin including a plough that is laterally movable at least partially in and out of the supply bin and which when the plough is fully retracted, closes an aperture in the supply bin; b. providing a coater located below the supply bin at least when the coater is being filled; c. providing a gate at the aperture that is adjusted in a direction perpendicular to a longitudinal axis of the aperture to change a size of the aperture; d. adjusting the gate to set a predetermined amount of the particulate matter to flow out the aperture into the coater; e. filling the supply bin with the particulate matter; f. protracting the plough at least partially from the supply bin; g. retracting the plough laterally into the supply bin, causing, via a pushing force of the plough, the predetermined amount of the particulate matter to flow out the aperture into the coater, thus filling the coater; and h. repeating steps a-g to form a rapid prototype part. - View Dependent Claims (14)
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Specification