Coating device for small electrically conductive components

Apparatus for coating electrically conductive small components comprising

• A. an electrically non-conductive first vessel having
• 1. a longitudinal axis,
• 2. continuously interiorly concavely curved side walls,
• 3. radially inwardly projecting longitudinally extending rib members associated with said side walls,
• 4. an aperture defined in one end region thereof about said axis
• B. a gas-tight second vessel located exteriorly about said first vessel in spaced relationship thereto, portions of said second vessel adjacent said first vessel being electrically non-conductive, said second vessel having a gas output orifice defined therein,
• C. shaft means associated fixedly with said first vessel and axially extending outwardly from the opposed end region thereof through a first wall portion of said second vessel, said shaft means including sealing means therefor adjacent said first wall portion, said shaft means being electrically non-conductive in regions thereof adjacent said first vessel, said shaft means including bearing means adapting said shaft means for axial rotational movements,
• D. a power head functionally associated with said shaft means exteriorly of said second vessel and adapted to drive rotatably said shaft means,
• E. electric inductive heating coil means circumscribing said second vessel about portions thereof adjacent said first vessel, and
• F. gas-tight receptacle means exterior of said second vessel for holding a reservoir of vaporizable, thermally decomposable material which upon gas phase decomposition releases a particulate product, said receptacle means including heating means for maintaining said material at a prechosen temperature and respective gas input and output ports defined therein,
• G. conduit means for delivering said material in a gas phase from said receptacle means into said second vessel, said conduit means extending from said gas input port through second wall portion of said second vessel and through said aperture, said conduit means terminating in said first vessel in an output orifice, said conduit means including sealing means therefor adjacent said second wall portion, and
• H. fluid-tight jacket means circumscribing said second vessel in regions thereof adjacent said first vessel, said jacket means including entrance and exit port means, said jacket means being adapted for the circulation therethrough of temperature regulating fluid.