Patent ID: 6099309
Filing Date: 2000-08-08
Classification: A61C

Abstract:
A disposable prophy angle comprising:(a) an elongated sleeve section, the sleeve section comprising:(i) a longitudinal passageway therein,(ii) one end of the sleeve section defining an opening having a diameter of sufficient size for allowing penetration by a motorized dental handpiece being connected to an electrical or air power source,(iii) a main drive shaft cointensively transversing through the passageway having a proximal end and a distal end having means for connecting to the main power source,(iv) a main drive gear integrally connected to the proximal end of the main shaft;(b) an elongated tapered neck section having one end connected to the other end of the sleeve section, the neck section comprising:(i) a lower flat surface, an upper flat surface, and elliptical side surfaces defining a hollow chamber extending the length of the neck section therein,(ii) a secondary shaft transversing through the chamber, the secondary shaft having a first end and a second end,(iii) means for supporting the secondary shaft within the chamber,(iv) a secondary gear integrally connected to the first end of the secondary shaft having externally extending teeth for meshing with the main gear whereby the secondary shaft will have the same rotational direction as the main drive shaft,(v) a spirally shaped driving gear integrally fixed to the second end of the secondary shaft;(c) a rounded head section having an end connected to the other end of the neck section, the head section comprising:(i) a cavity included therein,(ii) means for latching open and shut the bottom portion of the head section,(iii) the bottom portion of the head section having a cup opening,(iv) the cavity having a recess defined therein,(v) a rotating mandrel disposed within the cavity having a central axis pole extending outwardly from the top and bottom surface of the mandrel, the bottom surface in parallel relationship with the rounded head section,(vi) the top portion of the axis pole rotatively received within the recess,(vii) a cylindrical sheath extending downwardly from the recess for providing support, stabilization and alignment of the mandrel(viii) a receiving button integral with the bottom portion of the central axis pole,(ix) means for locking the mandrel in position within the cavity,(x) a beveled driven gear integrally mounted on the upper surface of the mandrel and being in a right angle relationship to the driving gear whereby the receiving button is rotatively put into motion; and(d) a prophy cup removably mounted on the receiving button.