Porous, static pressure air bearing device in a dentist's handpi

Details Porous, static pressure air bearing device in a dentist's handpi Porous, static pressure air bearing device in a dentist's handpi

1974-03-01

1976-07-20

Peshock, Robert

A61C 110

Patent

active

039698220

ABSTRACT:
In a dentist's handpiece, a porous, static pressure air bearing device includes a rotatable shaft for mounting thereon a cutting tool, a bearing case, an air bearing portion provided in the bearing case for supporting the rotatable shaft, and a turbine blade formed integrally with the shaft or mounted on the shaft. The air bearing portion is formed of porous material.

REFERENCES:
patent: 2442202 (1948-05-01), Hughes-Caley
patent: 2645534 (1953-07-01), Becker
patent: 3268205 (1966-08-01), Allen et al.
patent: 3384344 (1968-05-01), Ota
patent: 3426429 (1969-02-01), Hoffmeister et al.
patent: 3451134 (1969-06-01), Erickson et al.
patent: 3471125 (1969-10-01), Taubald et al.
patent: 3475065 (1969-10-01), Weichsel
patent: 3589828 (1971-06-01), Mosimann
patent: 3639074 (1972-02-01), Killick

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