A - Human Necessities – 61 – C
Patent
A - Human Necessities
61
C
83/5
A61C 1/00 (2006.01) A61C 1/14 (2006.01)
Patent
CA 1240858
Abstract of the Disclosure In a dental handpiece, a drawback bur chuck actuable to open by a cam lever mounted atop the handpiece head and acting axially downward on the chuck against a spring which urges the chuck upward into clamping engagement with a bur shank when the cam lever is in its closed position. The cam lever is rotatable on the axis of the chuck to a position to suit the convenience of the user. The chuck is removable for cleaning and positive means are provided to prevent over travel of the chuck to thereby prevent its permanent deformation.
483908
Macrae & Co.
Nalge Company
LandOfFree
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