Pneumatic actuator
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United States of America Patent
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Sep 5, 2006
Grant Date -
Aug 4, 2005
app pub date -
Jun 13, 2003
filing date -
Jun 14, 2002
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A pneumatic actuator includes a cylinder, an output shaft disposed rotatably in the cylinder, a pinion disposed in the output shaft, a piston rod furnished with rack teeth to be meshed with the pinion, and pistons disposed one each at opposite ends of the piston rod, wherein the pneumatic actuator further includes a pressure-inspecting chamber enclosed with the cylinder and the piston and a pressure-detecting hole establishing communication between the pressure inspecting chamber and the exterior.
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