Hinge installation tool

Details Hinge installation tool Hinge installation tool

1994-06-23

1995-05-30

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Machine including plural tools

Plural, simultaneously operational tools

408 53, 408112, B23B 4500

Patent

active

054196620

ABSTRACT:
A drilling device for boring holes in wood, plastic or metal in precise locations on a work piece, comprising a set of geared together shafts equipped with drilling bits. The bit holder shafts are guided by bearings housed in a frame biased upwardly by springs. The geared together shafts being powered by an electric drill motor.

REFERENCES:
patent: 513088 (1894-01-01), Crane
patent: 651315 (1900-06-01), Schurman
patent: 3389729 (1968-06-01), Macala
patent: 4572715 (1986-02-01), Wolff
patent: 5085543 (1992-02-01), Click
patent: 5217331 (1993-06-01), Ericksen

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