Adjustable clamping arrangement for magnetic mounting plate

Cutting by use of rotating axially moving tool – With work-engaging structure other than tool or tool-support – Magnetic or suction means

Reexamination Certificate

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Details

C408S103000, C248S646000, C248S674000, C248S681000

Reexamination Certificate

active

07396194

ABSTRACT:
A drill press is magnetically mounted on a steel plate which is clamped to a manhole cover by three L-shaped clamps. The L-shaped clamps are mounted in slots defined by brackets located on the periphery of the steel plate. Enlargements are provided on the L-shaped clamps to keep the L-shaped clamps from falling out of the slots.

REFERENCES:
patent: 2160274 (1939-05-01), Lopez
patent: 3175465 (1965-03-01), Fuller et al.
patent: 3617142 (1971-11-01), De Wane et al.
patent: 3791755 (1974-02-01), Warren
patent: 4047827 (1977-09-01), Hougen
patent: 4121815 (1978-10-01), Paterson
patent: 4242016 (1980-12-01), Faris
patent: 4390309 (1983-06-01), Fangmann
patent: 5352070 (1994-10-01), Tehrani
patent: 2278076 (1994-11-01), None
patent: 2000240079 (2000-09-01), None

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