Take double suction quimby pump of bloated tight cover of toper
The utility model discloses a take double suction quimby pump of bloated tight cover of toper, including the ring gear, the toper tight cover that expands, the toper is expanded tight cover and is had a taper surface, external screw thread and radial gap, ring gear have with the same tapered hole of...
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Format: | Patent |
Sprache: | eng |
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