Bi-directional rotation pneumatic grinding tool

Details Bi-directional rotation pneumatic grinding tool Bi-directional rotation pneumatic grinding tool

2006-01-10

2006-01-10

Hail, III, Joseph J. (Department: 3723)

Abrading

Frame or mount

C451S344000, C451S358000, C451S359000, C451S360000

Reexamination Certificate

active

06984169

ABSTRACT:
A bi-directional rotation pneumatic grinding tool for grinding surfaces includes a body which has an operation section and a grasp section. The operation section drives an output shaft to rotate in two directions. The output shaft has positive threads in the interior and reverse threads on the outside and is coupled with a fastening mechanism. The fastening mechanism includes a coupling head which has one end forming a fastening section with reverse threads formed thereon. The front section of the output shaft is coupled with a connection member which has other end forming a latch section with reverse threads formed thereon. The latch section is coupled with an anchor member. A fastener with positive threads runs through the anchor member and engages with the positive threads on the inner wall of the output shaft. The positive threads and the reverse threads of various elements of the fastening mechanism are engageable with each other to allow the pneumatic grinding tool to rotate in a positive direction or a reverse direction according to different requirements without loosening and direct sparks, grinding debris or dusts generated in the grinding processes in a desired direction without polluting environment or hurting people and working pieces.

REFERENCES:
patent: 4364286 (1982-12-01), Ciolli
patent: 4696208 (1987-09-01), Lay
patent: 4889454 (1989-12-01), Hillestad et al.

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