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US 5,348,473 AGranted
Medical tool
OwnerMichael F. Kivlighan, Jr.inventor
Life of this patent
Estimating the term…
Abstract
A medical tool such as a prophy angle is provided having primarily plastic parts to make disposing more economical. A portion of the drive shaft is made of metal to eliminate detrimental deformation. The housing is made of two plastic halves which snap-fit together and have projecting portions which surround a pair of oversized plastic beveled gears. A prophy cup having a locking projection is provided so that the locking projection fits into locking cavity on a stud of the tool. Vanes are disposed on the inside of the cup and have a step-like configuration to aid in retaining polishing paste in the cup.
Claims3
A medical tool, comprising:
- a housing including an elongated cylindrical body and a substantially cylindrical head portion transverse to an axis of said cylindrical body;
- a drive gear;
- and
- a driven gear;
- wherein at least one of said drive gear and said driven gear have a diameter greater than an inside diameter of one of said cylindrical body and said head portion, respectively,
- said drive gear being disposed in said cylindrical body and said driven gear being disposed in said substantially cylindrical head portion, and
- further comprising protrusions extending from said elongated cylindrical body and said cylindrical head portion, said protrusions accommodating said drive gear and said driven gear, respectively.
4 more elements
Dependencies are inferred from the claim text.