Dental handpiece
OwnerDon C. Gentryinventor
Life of this patent
Estimating the term…
Abstract
A dental handpiece includes a handle, a shank projected from the forward end of the handle, a turbine head on the forward end of the shank, and a turbine type dental engine in the head, with the engine being capable of holding and rotating a suitable dental bur. The head may be secured to the shank in a fixed position, with the engine axis at an oblique angle to the handle axis, the angle being such that regions and surfaces heretofore inaccessible to the dental bur are now easily accessible. Also the head may be coupled to the shank such that it pivots relative to the shank and handle, in which case, the axis of the dental engine and bur may be varied to suit the particular dental procedure that is to be performed. Means are provided for locking the head in the selected position.
Claims14
A dental handpiece comprising:
- a handle having forward and rear ends, a shank projection from the forward end of the handle, the shank being bifurcated so as to have two spaced apart arms;
- a turbine head between the arms of the bifurcated shank;
- a turbine-type dental engine in the turbine head for rotating a dental bur about an axis, the turbine head being attached to the arms of the shank such that the position of the engine axis can be varied with respect to the handle;
- and means extended through the handle and through both arms of the shank for supplying high pressure air to the turbine engine to rotate the dental bur.
A dental handpiece comprising:
- a handle having forward and rear ends;
- a shank at the forward end of the handle, the shank being bifurcated such that it has two arms;
- a turbine head mounted on the shank between the two arms of the shank;
- a turbine-type dental engine within the head and being capable of holding and rotating a dental bur;
- and means within both arms of the shank and within the head for introducing pressurized air to the engine at two locations around the axis of rotation for the engine, whereby the engine develops high torque.
A dental handpiece comprising:
- a handle;
- a shank projected from the forward end of the handle, the shank being bifurcated so as to have two spaced apart arms, one of the arms containing a drive air passage and the other of the arms containing an exhaust air passage;
- a turbine head mounted between the two arms of the shank such that it can swivel about a first axis that is transverse to the shank and passes through the two arms, the head having a drive air port which aligns with the drive air passage of the one shank arm in various positions of the rotation for the head, the head further having an exhaust air port which aligns with the exhaust air passage of the other shank arm in various positions of rotation for the head;
- a turbine-type dental engine located within the turbine head such that it is adapted to receive high pressure drive air from the drive port and to exhaust lower pressure exhaust air into the exhaust port;
- and means within the shank and handle for supplying high pressure air to the drive air passage of the one shank arm.
Dependencies are inferred from the claim text.