Abrading – Abrading process – Utilizing nonrigid tool
Patent
1998-04-29
1999-09-28
Scherbel, David A.
Abrading
Abrading process
Utilizing nonrigid tool
B24B 2100
Patent
active
059577584
ABSTRACT:
A portable belt sander includes two rotatable arms, each of which is urged outward by a torsion spring. The compression resistance of the torsion spring may be increased by compressing a bladder provided within the coil of the torsion spring. The arms may be locked in their maximum outward position by spring catches and a plate secured to the arms.
REFERENCES:
patent: 2259941 (1941-10-01), Primeaux
patent: 3566549 (1971-03-01), Britton
Ojini Anthony
Scherbel David A.
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