Method of making a toothbrush
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United States of America Patent
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-
Jun 7, 1994
Issued Date -
N/A
app pub date -
Nov 25, 1992
filing date -
Nov 20, 1990
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A spring member includes a planar strip of elastic material formed with a plurality of spirally-extending slits at spaced locations to define a plurality of spirally-extending elements integrally formed with the strip. The spirally-extending elements are pressed out of the plane of the strip to produce a plurality of helically-extending springs integrally formed with the strip, each spring decreasing in diameter from the strip to the outer end of the spring. Also described is the use of such spring members in toothbrushes and keyboards. Further described are methods of making such a spring member and making brush heads including such spring members.
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