Abrading – Frame or mount – For hanging rigid – rotary abrading tool
Reexamination Certificate
2005-06-14
2005-06-14
Nguyen, Dung Van (Department: 3723)
Abrading
Frame or mount
For hanging rigid, rotary abrading tool
C451S360000, C451S359000
Reexamination Certificate
active
06905401
ABSTRACT:
A bi-directional rotation pneumatic grinding tool for surface grinding operation consists of an operating section and a handgrip. The operating section includes an actuator to drive a transmission axle to rotate in two directions that has a spline section and a screw hole to couple with a first and a second splined trough of a coupling member and a fastening member, and a fastening element which has screw threads to run through the fastening member and fasten to the screw hole of the transmission axle. The invention may rotate in a positive or inverse direction to meet different requirements without loosening off. The design of spline section and splined troughs makes fabrication and assembly easier without concerning screwing direction. And sparks, grinding debris or dusts generated during grinding operation may be directed in a desired direction without polluting the working environment, hurting people, or damaging the work pieces.
REFERENCES:
patent: 3295262 (1967-01-01), Brown
patent: 5406752 (1995-04-01), Neff
patent: 6093090 (2000-07-01), Tosto et al.
patent: 6813837 (2004-11-01), Chen
patent: 2004/0248505 (2004-12-01), Chen
Nguyen Dung Van
Sunmatch Industrial Co., Ltd.
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