Pneumatic wrench having reinforced strength

Details Pneumatic wrench having reinforced strength Pneumatic wrench having reinforced strength

2006-11-28

2006-11-28

Thomas, David B. (Department: 3723)

Tools

Including tool driving by impact delivering component or...

Structurally constrained to arcuate movement

C081S463000, C081S464000, C081S465000

Reexamination Certificate

active

07140282

ABSTRACT:
A pneumatic wrench includes a pneumatic motor, a striking mechanism, and a drive shaft. The striking mechanism includes a cylindrical support seat, a cam, a cover, and a hammer. The hammer has a protruding engaging portion and a reinforcing rib juxtaposed to the engaging portion to reinforce the structural strength of the hammer. Thus, the two opposite sides of the hammer are connected by the reinforcing rib to reinforce the structural strength of the hammer, thereby preventing the hammer from being distorted or broken due to concentration of a stress so as to enhance the lifetime of the hammer.

REFERENCES:
patent: 2463656 (1949-03-01), Thomas
patent: 3533479 (1970-10-01), Albertson et al.
patent: 6119794 (2000-09-01), Chen
patent: 6648080 (2003-11-01), Liao

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