Counter
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United States of America Patent
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Jun 5, 2018
Issued Date -
N/A
app pub date -
Jul 13, 2015
filing date -
Mar 10, 2009
priority date (Note) -
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status (Latency Note)
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Abstract
A counter containing a first ring member having first indicia and a second ring member having second indicia, each of the first and second ring members being rotatable in increments about a common axis, one or both of the first and second indicia indicating a count; and a drive mechanism for rotating the first ring member and for rotating the second ring member after one or more predetermined degrees of rotation of the first ring member, wherein the drive mechanism contains a pawl-and-teeth mechanism which contains a first and second pawl engageable with a plurality of teeth, and wherein each of the first and second pawls contains a driving engagement face for engaging in a driving engagement with one of the plurality of teeth, and a sliding engagement face for sliding over one of the plurality of teeth.
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