发明申请
US20070041860A1 Rotary vane air pump 审中-公开
旋转叶片空气泵

Rotary vane air pump
摘要:
At least one of a cylinder (6), a rotor (8), a front plate (14), and a rear plate (16), all of which form compression chambers (18), is made of a metal, and a surface treatment is conducted on a portion of such at least one of those members.
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