Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Magnetic or suction means
Patent
1992-12-09
1994-01-04
Howell, Daniel W.
Cutting by use of rotating axially moving tool
With work-engaging structure other than tool or tool-support
Magnetic or suction means
408710, B23B 4514
Patent
active
052755142
ABSTRACT:
A portable workpiece-mounted machine tool such as a drill is provided with a permanent-electromagnet attaching unit which has its reversible permanent magnets alternating with nonreversible permanent magnets so that, when electric current is applied to the reversible magnets, they are subjected to polarity reversal which causes flux closure through a workpiece of the reversible and nonreversible magnets in the "on" position and causes flux closure between a reversible and nonreversible magnet in an "off" position.
REFERENCES:
patent: Re33145 (1990-01-01), Palm
Dubno Herbert
Eclipse Magnetics Ltd.
Howell Daniel W.
Universal Drilling and Cutting Equipment Limited
LandOfFree
Drill support does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Drill support, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Drill support will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-302704