Apparatus for coating a surface with a pulverulent product
AssigneeInstitut Francais du Petrole
InventorRoger Provost
Life of this patent
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Abstract
This apparatus comprises in combination means for processing the pulverulent product, which subject this product to a sudden pressure drop and deliver a pulverulent fluid formed by solid particles of the product suspended in a carrying gas, a storage chamber communicating with said processing means, spraying means connected to said chamber by a pipe and means controlling the flow of pulverulent fluid through said pipe.
Claims27
An apparatus for depositing a homogeneous layer of a pulverulent product onto the surface of an object, comprising in combination:
- treating means for subjecting the pulverulent product to a sudden pressure drop to produce a pulverulent fluid containing solid particles of the pulverulent product suspended in a carrier gas,
- a storage chamber for receiving the pulverulent fluid, said chamber communicating with said treating means,
- means for spraying said particles of the pulverulent fluid, said spraying means being connected to said chamber through a conduit, and
- means controlling the flow of pulverulent fluid in said conduit.
An apparatus for depositing a homogeneous layer of a pulverulent product onto the surface of an object, comprising in combination:
- treating means for subjecting the pulverulent product to a sudden pressure drop to produce a pulverulent fluid containing solid particles of said pulverulent product in a carrier gas, said treatment means comprising a member delimiting a chamber, an inlet opening for entry of the pulverulent product into said chamber and an outlet opening for the discharge of the pulverulent fluid from said chamber, and suction means for creating in said chamber a negative pressure with respect to the pressure prevailing outside said chamber
- a storage chamber means for receiving the pulverulent fluid, said chamber means communicating with said treating means,
- means for spraying said pulverulent fluid onto an object, said spraying means being connected to said storage chamber means through a conduit, and
- means for controlling the flow of said pulverulent fluid through said conduit.
Dependencies are inferred from the claim text.