Apparatus for plasma treatment of golf balls
The present invention relates to an improved apparatus for plasma treatment of golf ball surface. The improved apparatus comprises a cylindrical basket shaped rotating tumbler made from aluminum sheet metal that holds a plurality of golf balls within a sealed casing for surface preparation. A staggered hole pattern yields about 57% of open area in the tumbler surface to insure evacuation with minimum resistance. The holes are individually machined and have machined radiuses at each side of the sheet metal to allow for adequate coverage of a hard anodic coating which is necessary for protection of the sheet metal from the high intensity plasma.
1. An apparatus for treating golf ball surface comprising a sealed casing, a tumbler for holding golf balls in the casing, and an electric source for applying high voltage across the electrodes in order to generate glow discharge, wherein the improvement comprises the tumbler further having:
a plurality of perforated holes in a staggered pattern covering a substantial portion of the tumbler surface; and
the plurality of perforated holes have a curved radius machined about their outer edges,
wherein the curved radius is about 0.06 to 0.12 inch.
2. An apparatus for treating golf ball surface comprising a sealed casing, a tumbler for holding golf balls in the casing, and an electric source for applying high voltage across the electrodes in order to generate glow discharge, wherein the improvement comprises the tumbler further having:
a plurality of perforated holes in a staggered pattern covering a substantial portion of the tumbler surface; and
the plurality of perforated holes have a curved radius machined about their outer edges,
wherein the plurality of holes have a through diameter greater than about 0.25 inch and less than about 0.50 inch.
3. An apparatus for treating golf ball surface comprising a sealed casing, a tumbler for holding golf balls in the casing, and an electric source for applying high voltage across the electrodes in order to generate glow discharge, wherein the improvement comprises the tumbler further having:
a plurality of perforated holes in a staggered pattern covering a substantial portion of the tumbler surface; and
the plurality of perforated holes have a curved radius machined about their outer edges,
wherein the staggered pattern includes through-holes of about 0.375 inch diameter on a 0.750 inch staggered pattern.