Spheres obtained by vapor deposition for use in ball point pens

Coating implements with material supply – Including ball – roller or endless-belt tool – Ball

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Details

291484B, 428403, B43K 710

Patent

active

041509056

ABSTRACT:
A sphere particularly suitable for ball point pens having a core capable of withstanding temperature in excess of 800.degree. C. and a chemically vapor deposited coating on the core, the combined diameter of core and coating ranging from approximately 0.5 to approximately 1 mm in diameter. For example, the core may consist of a metal such as tungsten, nickel, copper or molybdenum; or alternatively the core may consist of a ceramic such as aluminum oxide or graphite. The vapor deposited coating may consist of a metal carbide such as tungsten carbide, titanium carbide, tantalum carbide or niobium carbide. Alternatively the coating may consist of a metal boride such as titanium diboride.

REFERENCES:
patent: 3503692 (1970-03-01), Kubota et al.

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