Abrading – Flexible-member tool – per se
Patent
1994-12-13
1995-10-03
Rachuba, Maurina T.
Abrading
Flexible-member tool, per se
451353, B24B 100
Patent
active
054547512
ABSTRACT:
An improved method of finishing surfaces having irregular stepped portions or other edges and improved apparatus therefor. The method of the present invention includes rough finishing the surface by utilization, of a rotary tool with a first abrasive pad attached thereto. The first abrasive pad includes an abrasive body portion with an outer peripheral edge. A substantially flexible outer rim portion extends outward from the peripheral edge of the pad. According to a second step of the present invention, finished sanding of the surfaces is accomplished by utilization of a rotary tool with a second abrasive pad attached thereto. The second abrasive pad includes a backing substrate and at least one abrasive segment attached thereto. The total abrasive surface encompassed by the abrasive segment is from about 1% to about 30%. With the finishing pad of the present invention hydraulic suction is minimized thereby allowing greater forces to be placed on the abrasive pad for increasing abrasive cutting efficiency of a particular sized abrasive grit.
REFERENCES:
patent: 816461 (1906-03-01), Gorton
patent: 3098329 (1963-07-01), Doran
patent: 3468079 (1969-09-01), Kaufman
patent: 4617767 (1986-10-01), Ali
patent: 4675975 (1987-06-01), Kucharczyk et al.
patent: 4754580 (1988-07-01), Mattson
patent: 5174795 (1992-12-01), Wiand
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