Portable drilling apparatus

Details Portable drilling apparatus Portable drilling apparatus

1992-05-22

1994-02-01

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Means to drive tool

408 76, 408138, B23B 4704

Patent

active

052827046

ABSTRACT:
Portable drilling apparatus provided with a support by means of which it can be secured to a work member and mounting means for a cutting tool including a mounting member having a vertically extending elongate part within which a drive spindle is rotatably mounted, the drive means including an elongate toothed gearwheel driven by a motor held in a fixed position in the support, a toothed gear carried by the drive spindle engaging the elongate gearwheel and sliding axially relative thereto.

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patent: 4453868 (1984-06-01), Winslow
patent: 4582456 (1986-04-01), Imai
patent: 4610580 (1986-09-01), Palm

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