Rotary expansible chamber devices
Working member has planetary or planetating movement
Helical working member, e.g., scroll
Inventor
active
Double wrap dry scroll vacuum pump having a compressed gas cooli
Oil-free scroll vacuum pump having a gas ballast part
Oil-free two stage scroll vacuum pump and method for controlling
Scroll fluid machine having a cooling passage inside the drive s
Scroll fluid machine having a cooling passage inside the drive s
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