Pneumatic tool with settable safety function

Details Pneumatic tool with settable safety function Pneumatic tool with settable safety function

2006-05-16

2006-05-16

Smith, Scott A. (Department: 3721)

Tool driving or impacting

Passage in manipulating handle for drive motor motive fluid

Motive fluid control valve in handle passage

C173S170000

Reexamination Certificate

active

07044235

ABSTRACT:
A pneumatic tool with settable safety function, including: a main body having a flow way for a fluid to flow into the main body to drive a pneumatic cylinder; a switch disposed in the main body for blocking the flow way in normal state; a trigger disposed on the main body for triggering the switch; a safety device movable between an activation position and a non-activation position; and a switching button connected with the safety device and switchable to position the safety device in the activation position or non-activation position. When the safety device is positioned in the activation position, the trigger can be pulled to shift the switch to activate the pneumatic tool, while when the safety device is positioned in the non-activation position, the trigger cannot be pulled to shift the switch so as to provide a safety effect.

REFERENCES:
patent: 3632936 (1972-01-01), Piber
patent: 3746813 (1973-07-01), Brown
patent: 3847233 (1974-11-01), Glover et al.
patent: 4254667 (1981-03-01), Wong
patent: 5163354 (1992-11-01), Bilodeau
patent: 6644419 (2003-11-01), Chen

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