Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Having tool-opposing – work-engaging surface
Patent
1982-08-27
1985-09-10
Briggs, William R.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Having tool-opposing, work-engaging surface
408111, 408141, 408202, B23B 4514
Patent
active
045403198
ABSTRACT:
A drilling device for removing a spot-welded portion includes a main body casing having a chuck receiving holder, a U-shaped arm one an end of which is connected to a side portion of the chuck receiving holder, a grip handle pivotally connected to a base shoulder portion of the U-shaped arm, a chuck thrusting arm mounted integrally at an end of the grip handle, and a chuck having a drill fixed thereof, the drill facing a free end of the U-shaped arm, and a chuck receiver for receiving the chuck and slidably inserted into the main body casing. The chuck is rotated and projected in the direction toward the free end of the U-shaped arm by movement of the chuck receiver upon depression of the grip handle, the force of which is transmitted via the chuck thrusting arm. The drilling device further includes a projection amount adjusting screw for adjusting the amount of projection of the chuck.
REFERENCES:
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patent: 3089357 (1963-05-01), Grau
patent: 3620634 (1971-11-01), Sullivan
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patent: 3779663 (1973-12-01), Ruggles
patent: 4115017 (1978-09-01), Wilhelmsson
patent: 4362444 (1982-12-01), Watkins
patent: 4405267 (1983-09-01), Stoken
patent: 4418767 (1983-12-01), Vindez
Briggs William R.
Maeda Kiko Company Limited
Tsukai Michiharu
Webb Glenn L.
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