Trochoid type oil pump
Trochoidal pump
Trochoidal toothed oil pump with thin discharge channel communic
Two rotor sliding vane compressor
Two-stage gear pump with improved spur gear mounting
Vane cell pump
Vane guide apparatus of a rotary compressor
Vane type compressor having an improved rotatable sleeve
Vane type pump device
Vane type rotary compressor with rotary sleeve
Vane-type pump with rotatable casing therein driven from pump sh
Vane-type rotary compressor having a sleeve for rotation with va
Vane-type rotary compressor with rotary sleeve
Vane-type rotary pump having two-piece side housings
Variable volume flow internal gear pump
Yoke coupler for two eccentrically rotating members