Abrasive tool making process – material – or composition – With carbohydrate or reaction product thereof
Patent
1990-01-09
1991-08-27
Schmidt, Frederick R.
Abrasive tool making process, material, or composition
With carbohydrate or reaction product thereof
51170T, B24B 2300, B24B 27033
Patent
active
050422081
ABSTRACT:
A finishing machine will finish the surface texture of a concrete wall. The finishing machine has a frame with guide rails that will extend along one side of the wall. The frame extends up over the top of the wall. A wheel mounted to the upper section of the frame supports the guide rails and the frame. The wheel will roll along the top of the wall and is driven by an electric motor. A rotary drive head will rotate polishing stones for polishing the side of the wall. The lifting device will raise and lower the drive head on the guide rails.
REFERENCES:
patent: 1430387 (1922-09-01), Krall
patent: 1932319 (1933-10-01), Myers
patent: 2326264 (1943-08-01), Steltzer
patent: 2674117 (1954-04-01), Butler
patent: 2787096 (1957-04-01), Riddels
patent: 3348342 (1967-10-01), Zacheck
patent: 4199905 (1980-04-01), Neidigh
patent: 4381911 (0383-05-01), Bell
Bradley James E.
Schmidt Frederick R.
Watson Bruce P.
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