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US 4,440,806 AGranted
Rainfall sander
AssigneeShell-O-Matic Inc.
InventorGeorges Muri
Life of this patent
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AssigneeShell-O-Matic Inc.
InventorGeorges Muri
Estimating the term…
This invention provides a distribution system suitable for coating articles placed in a given area with particulate material in a substantially uniform manner. The system comprises a plurality of arms which are provided with an inlet opening and a discharge opening. The arms are mounted for rotation about a central axis in conjunction with means for dividing and feeding a supply of particulate material from a source thereof into said inlet openings of the arms. The discharge opening is located on each of the arms in such manner so as to permit discharge of the particulate material from each arm over the given area, whereby when the arms rotate in conjunction with the dividing and feeding means, a supply of particulate material is divided and fed into the inlet openings of the arms and is discharged through the discharge opening. In this manner, a substantially uniform shower of the particulate material is provided over the given area.
A method of coating an article such as a wax pattern with particulate material which comprises providing an article to be coated with a finely divided particulate material, providing a supply of finely divided particulate material, placing said article in downstream relationship to said supply of particulate material, feeding said finely divided particulate material from said supply to form a first central stream of said particulate material, subjecting said stream to the action of a rotating conical flow-controlling member to form an annular stream, feeding said annular stream through a plurality of hollow rotating arms of varying lengths located peripherally of said rotating conical flow controlling member and forming said stream into a plurality of rotating smaller finely divided steams which are radially dispersed relative to the axially flow direction of said first stream, and which form a shower of said particulate material dispersed in a substantially uniform flow of said particulate material over a given area downstream of said supply thereof whereby a substantially uniform coating is provided on said article.
A distribution system suitable for coating articles such as wax patterns, placed in a given area with a particulate material, in a substantially uniform manner, comprising retaining means for retaining a supply of particulate material, distribution means comprising a plurality of arms, each having an inlet opening and a discharge opening, said arms being of varying length, and being mounted for rotation about a central axis, rotatable means for dividing and feeding a supply of particulate material from said retaining means into said inlet openings of said arms, said means for dividing and feeding said supply of particulate material comprising a conical member moveable between opened and closed relationship with said means for retaining the supply of particulate material, the inlet opening of said arms being located about said rotatable means, the discharge opening of said arms being located on each of the arms in such a manner so as to permit discharge of the particulate material from each arm over said given area, whereby when the arms rotate in conjunction with the dividing and feeding means, a supply of particulate material is divided and fed into the inlet openings of the arms and is discharged through the discharge opening, thereby providing a substantially uniform shower of the particulate material over said given area.
Dependencies are inferred from the claim text.