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Chain wear indicator

  • US 6,178,824 B1
  • Filed: 10/14/1998
  • Issued: 01/30/2001
  • Est. Priority Date: 10/14/1998
  • Status: Expired due to Term
First Claim
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1. A chain wear indicator for determining wear of a roller chain having a plurality of pivotally coupled chain links, said chain wear indicator comprising:

  • a body portion;

    a first protrusion extending from said body portion and having a first roller engaging surface facing in a first longitudinal direction relative to the roller chain and adapted to engage a portion of a first roller of one of the chain links; and

    a second protrusion extending from said body portion and having a second roller engaging surface facing in said first longitudinal direction relative to the roller chain and adapted to engage a portion of a second roller of one of the chain links which corresponds to the portion of the first roller, said second roller engaging surface being configured and spaced apart from said first roller engaging surface by a distance corresponding to a predetermined number of the chain links plus a first pre-selected amount of wear per link such that wear of the predetermined number of chain links is measured between said first and second roller engaging surfaces to indicate unacceptability of the roller chain when the roller chain is placed under tension, the first roller contacting said first roller engaging surface and the second roller contacting said second roller engaging surface when the roller chain is placed under tension such that wear of the first and second rollers is not measured.

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