Multiply functioned drill means

Details Multiply functioned drill means Multiply functioned drill means

1994-02-01

1995-04-25

Howell, Daniel W.

Cutting by use of rotating axially moving tool

Tool-support

With tool-retaining means

7158, 7165, 279 14, 279905, 408241R, B23B 5112, B25F 300

Patent

active

054093333

ABSTRACT:
A drill includes: a drill housing having a chuck collar of the drill made as a polygonal prism or a cylindrical collar having at least a secant flat surface formed thereon, a central drilling tool axially mounted in the drill housing, and a sleeve member having a hollow bore portion centrally formed through the sleeve member, having a coupling adapter formed on a proximal end of the sleeve member concentrically detachably secured to the chuck collar of the drill housing and having a screw driver member detachably mounted on a distal end of the sleeve member, whereby upon coupling of the sleeve member secured with the screw driver member onto the chuck collar of the drill, the hollow sleeve member on the drill will encase the central drilling tool previously axially mounted in the drill housing without first dismantling the central drilling tool for convenient replaceable uses of the drill.

REFERENCES:
patent: 3484114 (1969-12-01), Rodin
patent: 4218795 (1980-08-01), Ernst et al.
patent: 4791690 (1988-12-01), Kuang-Wu
patent: 4796319 (1989-01-01), Taft
patent: 5129118 (1992-07-01), Walmesley
patent: 5191666 (1993-03-01), Corbin
patent: 5313680 (1994-05-01), Ringler

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