Apparatus for depositing a uniform thickness layer of particulate material
AssigneeSaint-Gobain Industries
InventorJeannik Marcault
Life of this patent
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Abstract
Apparatus for evenly and uniformly depositing particulate suspended in a gas on at least one surface, and in at least one direction, of a substrate. The apparatus has an exit slit (13) and a passage for communication of product including a main conduit (1), a plurality of secondary conduits (2) which are of equal length and internal diameter and a primary slit (6) communicating with a chamber (7). The slits are coextensive in length and the secondary conduits, of equal length, connect along the primary slit at regular spacing so that product is delivered uniformly to said exit slit.
Claims10
Apparatus for depositing in an even and uniform layer a particulate material on a substrate, said apparatus including
- (a) a housing including a longitudinal exit slit, and
- (b) means for moving said particulate as a gaseous suspension to said exit slit, said means including
- (1) a chamber in said housing,
- (2) a main conduit into which said suspension is received, and
- (3) a plurality of secondary conduits, dividing from one end of said main conduit, and each said secondary conduit being of equal length and internal diameter with the other end connected to said chamber within a length coextensive with said exit slit and at equally spaced intervals therealong.
In combination, at least two apparatus adapted for depositing a particulate material in an even and uniform layer on a substrate, each said apparatus including
- (a) a housing including a longitudinal exit slit, and
- (b) means for moving said particulate as a gaseous suspension to said exit slit, said means including
- (1) a chamber in said housing,
- (2) a main conduit into which said suspension is recieved, and
- (3) a plurality of secondary conduits, dividing from one end of said main conduit, and each said secondary conduit being of equal length and internal diameter with the other end connected to said chamber within a length coextensive with said exit slit and at equally spaced intervals therealong, and wherein at least two of said apparatus are juxtaposed side-by-side whereby the overall length of said exit slit is equal to the summation of slit lengths.
In combination, at least two apparatus adapted for depositing a particulate material in an even and uniform layer on a substrate, each said apparatus including
- (a) a housing including a longitudinal exit slit, and
- (b) means for moving said particulate as a gaseous suspension to said exit slit, and means including
- (1) a chamber in said housing,
- (2) a main conduit in which said suspension is received, and
- (3) a plurality of secondary conduits, dividing from one end of said main conduit, and each said secondary conduit being of equal length and internal diameter with the other end connected to said chamber within a length coextensive with said exit slit and at equally spaced intervals therealong, and wherein at least one apparatus is disposed on one side of said substrate and at least one apparatus is disposed on the other side of said substrate for deposit of product on the opposite surfaces.
Dependencies are inferred from the claim text.