Dentistry – Apparatus – Having motor or means to transmit motion from motor to tool
Patent
1995-08-16
1997-07-01
Lucchesi, Nicholas D.
Dentistry
Apparatus
Having motor or means to transmit motion from motor to tool
433116, 433125, A61C 105, A61C 116, A61C 306
Patent
active
056429959
ABSTRACT:
A dental prophylaxis angle includes a body defining a sleeve and a head. A drive assembly is rotatably mounted in the sleeve. A driven gear is rotatably received in the head to be driven by the drive assembly. A cap is mounted in the head to close the head and retain the driven gear in place in the head. A threaded bur tube on the driven gear extends into a stem portion of the cap. The stem portion includes an externally beveled annular knife edge which forms a seal with a dental tool, such as a prophy cup, which is threaded into the bur tube. A protector ring on the cap surrounds the knife edge to prevent damage to the knife edge should the angle be dropped or otherwise contact a hard surface. The protector ring is spaced from the stem sufficiently to permit an elastomeric portion of the dental tool to extend between the stem and the ring.
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Lucchesi Nicholas D.
Young Dental Manufacturing Company
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