Wave tooth gears using identical non-circular conjugating pitch curves
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United States of America Patent
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Nov 11, 2003
Grant Date -
Sep 18, 2003
app pub date -
Mar 14, 2002
filing date -
Mar 14, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
This invention is directed to a novel wave tooth gear having a non-circular pitch curve and uniform wave teeth to create a tighter seal between meshing gears. The non-circular wave tooth gear has a major axis and a minor axis disposed perpendicular to the major axis, wherein the major axis is longer than the minor axis and includes a central hub, a plurality of teeth radially extending from the hub at locations surrounding the hub and a plurality of roots, each root positioned between adjacent teeth at locations surrounding the gear. The teeth include a head portion shaped as an arc segment of a first radius and the roots include a recess shaped as an arc segment of a second radius. The teeth heads are joined to adjacent roots by lines of tangency.
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