Milling tool for forming recesses in masonry, concrete and simil

Details Milling tool for forming recesses in masonry, concrete and simil Milling tool for forming recesses in masonry, concrete and simil

1981-12-03

1984-03-20

Whitehead, Harold D.

Boring or penetrating the earth

Bit or bit element

Rolling cutter bit or rolling cutter bit element

175376, 409143, 125 5, E21B 924

Patent

active

044375263

ABSTRACT:
A milling tool for forming recesses, such as an undercut in a borehole, in masonry, concrete and similar material structures includes a tool shaft with a bearing pin extending outwardly from one end of the shaft and with the axis of the pin offset eccentrically to the axis of the tool shaft. A freely rotatable annular milling head is positioned on and encircles the bearing pin. The outside surface of the milling head has cutting edge members.

REFERENCES:
patent: 664140 (1900-12-01), Forsyth
patent: 1758647 (1930-05-01), Burrell
patent: 1773408 (1930-08-01), Rolfsen
patent: 1801265 (1931-04-01), Copelin
patent: 1954166 (1934-04-01), Campbell
patent: 2671381 (1954-03-01), Carlson
patent: 2784482 (1957-03-01), Emmons
patent: 3403594 (1968-10-01), Newell

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