Bushings and abrasive wheel therewith

Abrading – Frame or mount – Portable abrader

Reexamination Certificate

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C451S466000, C451S508000

Reexamination Certificate

active

06840848

ABSTRACT:
A bushing is disclosed for use with a grinding abrasive flap wheel of the type employing circular end caps mounted on opposite sides of an annular array of abrasive leaves, wherein bases of the leaves are interconnected by an adhesive and have two notches in their opposite side edges near each base end of each leaf such that the notches form concentric circular depressions on opposite sides of the array and each end cap has an outer rim portion and an arcuate lip inwardly extending therefrom which engages the circular depressions formed by the notches thereby mechanically gripping the ends of the abrasive leaves.

REFERENCES:
patent: 2678523 (1954-05-01), Leggett
patent: 2798343 (1957-07-01), Aleck
patent: 2818692 (1958-01-01), Bernstein
patent: 2842902 (1958-07-01), Miller et al.
patent: 3004373 (1961-10-01), Brooks
patent: 3188777 (1965-06-01), Aleck
patent: 3200543 (1965-08-01), O'Neil, Jr. et al.
patent: 3406488 (1968-10-01), Rykken
patent: 3406496 (1968-10-01), Betteridge et al.
patent: 3561173 (1971-02-01), Block
patent: 3600861 (1971-08-01), Haywood
patent: 4258509 (1981-03-01), Wray et al.
patent: 4275529 (1981-06-01), Teetzel et al.
patent: 4455788 (1984-06-01), Freerks
patent: 5177830 (1993-01-01), Montabaur et al.

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