Metal tools and implements – making – File cutting – Process
Patent
1984-10-03
1986-09-16
Parker, Roscoe V.
Metal tools and implements, making
File cutting
Process
76101D, 51 95R, 51288, B24B 1902, B24B 324
Patent
active
046115099
ABSTRACT:
A dental root canal cutting tool is formed by mounting a wire rod (3) onto a chuck-head (5). The chuck-head (5) variably rotates and advances the wire rod (3) into a guide (6) having a guide hole (7). A whetstone (9) is disposed proximate the outlet of the guide hole (7) for grinding the wire rod (3) with a taper-like shape. A space exists between the cutting edge of the whetstone (9) and the axial center of the guide hole, which varies in response to the advance of the wire rod.
REFERENCES:
patent: 3561171 (1971-02-01), Van Vleet et al.
Matsutani Seisakusho
Parker Roscoe V.
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