Rotary float

Details Rotary float Rotary float

2006-04-18

2006-04-18

Wilson, John J (Department: 3732)

Dentistry

Veterinary dentistry

C433S125000, C433S130000

Reexamination Certificate

active

07029274

ABSTRACT:
A rotary float includes an elongated tubular arm with a drive shaft rotatably mounted therethrough. A drive unit is coupled to a rearward end of the shaft to rotate the shaft. A swivel on the forward end of the drive shaft connects the drive shaft to a collet shaft within an extension tube, and transmits rotational force from the drive shaft to the collet shaft. The extension tube is connected to the arm at a knuckle joint, which permits the extension tube to pivot about the forward end of the arm. A bit is mounted on the forward end of the collet shaft, for grinding a surface adjacent the forward end of the extension tube.

REFERENCES:
patent: 219849 (1879-09-01), Cushing
patent: 374286 (1887-12-01), Bell et al.
patent: 383367 (1888-05-01), Patrick
patent: 756836 (1904-04-01), Crawford
patent: 854955 (1907-05-01), Martin
patent: 1035239 (1912-08-01), Rosenthal
patent: 1170524 (1916-02-01), Fernald
patent: 1688136 (1928-10-01), Chayes et al.
patent: 4722685 (1988-02-01), de Estrada
patent: 6273712 (2001-08-01), Rach et al.
patent: 838501 (1960-06-01), None

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