Pneumatic wrench having reinforced strength

Details Pneumatic wrench having reinforced strength Pneumatic wrench having reinforced strength

2007-02-27

2007-02-27

Sipos, John (Department: 3721)

Tool driving or impacting

Impacting devices

With anvil arranged to transmit torsional impact to tool

C173S093000, C173S093600, C173S104000, C173S125000, C173S126000

Reexamination Certificate

active

10916568

ABSTRACT:
A pneumatic wrench includes a pneumatic motor, a striking portion, and a drive shaft. The striking portion includes a support seat, a first pin, a second pin, a first hammer, and a second hammer. Thus, the locking strip of the first hammer and the locking strip of the second hammer increase the thickness of the first hammer and the second hammer respectively to reinforce the structural strength of the first hammer and the second hammer, thereby preventing the first hammer and the second hammer from being broken due to vibration so as to increase the lifetime of the first hammer and the second hammer.

REFERENCES:
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patent: 6070674 (2000-06-01), Williamson et al.
patent: 6454020 (2002-09-01), Jong
patent: 6491111 (2002-12-01), Livingston et al.
patent: 2006/0011364 (2006-01-01), Chang

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