Abrasive disc

Details Abrasive disc Abrasive disc

2005-03-16

2010-06-29

Hail, III, Joseph J (Department: 3723)

Abrading

Rigid tool

Rotary disk

C451S259000, C451S359000, C451S529000, C451S533000, C451S537000, C451S541000

Reexamination Certificate

active

07744447

ABSTRACT:
An abrasive disc comprises a disc substrate having a peripheral portion, plural abrasive chips each having an abrasive layer on a metal piece and being arranged in the peripheral portion of the disc substrate with a predetermined space, a suspension plate placed between the disc substrate and abrasive chips, and an elastic sheet placed between the disc substrate and the suspension plate so as to isolate the disc substrate from the suspension plate in order to absorb mechanical shock generated in operation of the abrasive disc. The abrasive chips are fastened to the suspension plate. Each of the abrasive chips has abrasive surfaces including a top abrasive surface and peripheral surfaces and the outer peripheral portion and the inner peripheral portion are declined to the top surface.

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