Dental handpiece

Details Dental handpiece Dental handpiece

1990-07-17

1991-11-05

Wilson, John J.

Dentistry

Apparatus

Having intra-oral dispensing means

433 80, 433 88, 433103, 433125, A61C 110, A61C 1702, A61C 302, A61C 102, A61C 306, A61G 1702

Patent

active

050627961

ABSTRACT:
A dental handpiece for rotating a dental cleaning tool includes a casing in which there is mounted a drive shaft that is operably connected to the cleaning tool. A rotor is affixed to the drive shaft and is driven by compressed air fed to the casing. The drive shaft is hollow and communicates with a reservoir situated within the casing. The reservoir contains a refillable supply of dental paste. Pressurized air is fed to the reservoir to push paste through the hollow drive shaft and into the dental cleaning tool. The interior of the drive shaft includes a helical screw which aids in feeding the paste toward the cleaning tool.

REFERENCES:
patent: 2400912 (1946-05-01), Britt et al.
patent: 2738528 (1956-03-01), Fridge, Sr.
patent: 3389468 (1964-12-01), Lewis et al.
patent: 3411210 (1958-12-01), Staunt
patent: 3987550 (1976-10-01), Danne et al.
patent: 4220446 (1980-09-01), Walker
patent: 4315741 (1982-02-01), Reichl
patent: 4318695 (1982-03-01), Lieb et al.
patent: 4696644 (1987-09-01), Goof

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