Hair roller
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United States of America Patent
Stats
-
Nov 30, 1982
Grant Date -
N/A
app pub date -
Sep 15, 1980
filing date -
Sep 15, 1980
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A hair roller is provided that comprises a tubular body defining an outer surface for receiving hair to be wound thereon. The outer surface is free of projections or depressions exceeding 0.010 inches in height or depth. The outer surface of the tubular body is formed of a resilient, elastomeric, compressible, and non-porous material having a Shore durometer A hardness of between about 20 and about 65. The outer surface also has a static coefficient of friction greater than about 50, measured at ambient temperature against dry hardwood on the James machine in accordance with ANSI/ASTM F 489-77, whereby hair will readily grip the outer surface to facilitate winding hair about the hair roller.
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