Boring apparatus

Details Boring apparatus Boring apparatus

1990-06-19

1991-07-30

Schwartz, Larry I.

Cutting by use of rotating axially moving tool

Means to drive tool

Including means to move tool along tool-axis

408135, 408 76, 408 56, 74625, 74640, 192 96, 192 71, B23B 4718

Patent

active

050355490

ABSTRACT:
A boring apparatus wherein the size in the axial direction of the shaft of the manual handle horizontally supported can be made small-sized. A clutch is composed of spherical bodies, a cylindrical body having formed therein hole portions for receiving the spherical bodies, spherical body pressing means for pressing the spherical bodies to the outside or inside of the cylindrical body, and an engagement member having recessed portions engaging with the spherical bodies which are projected to the outside or inside of the cylindrical body, and the boring apparatus is constructed by using the clutch.

REFERENCES:
patent: 1071539 (1913-08-01), Weigel
patent: 3555929 (1971-01-01), Hossfeld
patent: 4741226 (1988-05-01), Bernard
patent: 4789274 (1988-12-01), Shoji et al.

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