Jack Lemkin, president of Sinitron Corp., a mold components importer in Columbus, Ohio, has been granted U.S. patent 7,229,265 for mold locks with lubricating grooves. Mold locks are used to maintain precise alignment between the halves of an injection mold.
Separate patent claims include “X-shaped intersections” and “means of introducing lubricants into grooves.”
Sinitron claims the use of lubricants such as Mold-Lub, combined with a boron nitride coating, reduces wear so effectively that the firm warranties its mold locks against wear for one year.
Lemkin claims that using or making a mold that includes mold locks with X-shaped grease grooves could infringe on the patent, which he received June 12.
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