A - Human Necessities – 61 – C
Patent
A - Human Necessities
61
C
A61C 15/04 (2006.01) A61C 15/00 (2006.01)
Patent
CA 2086223
A dental cleaning instrument for cleaning the interproximal area between teeth is constructed with three threads of yarn. The first thread is initially supported on a first post and a second thread of yarn is supported on a second post. The third thread is wound on a bobbin and then interlaced around and between the first and second threads in a figure-8 pattern, while the first and second threads are simultaneously advanced in a direction normal to the plane in which the bobbin is moving. The resulting instrument consists of woven threads having a combined denier in the range of 480-1240, with superior spreadability and separation of ends.
Ladd Timothy D.
Maekawa Kiyoshi
Belding Heminway Co. Inc.
Bereskin & Parr
John O. Butler Company
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