Patent ID: 6312522
Filing Date: 2001-11-06
Classification: B05C,G03G

Abstract:
A coating vessel for producing a uniform coating layer on a hollow cylinder by immersion comprising:a) a vertical wall having an inner surface defining a vertical interior for containing a coating solution, said vertical interior having a circular cross-section and an imaginary vertical axis;b) an open top into said vertical interior for receiving the hollow cylinder to be coated;c) a closed bottom to said vertical interior;d) a vertical shaft supported on said bottom for holding the cylinder to be coated, said vertical shaft having an axis aligned coaxially with the imaginary vertical axis of said vertical interior and controllable;e) an coating liquid inlet/outlet located adjacent to said bottom, andf) a first spacing device having a centered hole and a hollow shaft having a first open end and a second open end, the first open end being secured to the first spacing device and aligned with the centered hole, the first open end and centered hole are adapted to slide onto and align coaxially with the vertical shaft supported on the bottom of the coating vessel whereby the vertical shaft extends beyond the second open end of the hollow shaft, thereby defining a uniform space between an exterior of the cylinder and said inner surface of said vertical wall such that coating supplied to the uniform space by the coating liquid inlet produces a uniform coating layer on an exterior surface of the hollow cylinder.