| 摘要 |
A fluid suction device is disclosed. The device comprises a cylinder, a piston mounted for sliding movement into the cylinder, a shaft secured to the piston at one end and having a longitudinal bore therein communicating with the cylinder, a suction head secured to the outer end of the shaft and having a longitudinal bore in communication with the bore in the shaft spring means surrounding the shaft for biasing the suction head away from the cylinder, and means for moving the shaft into the cylinder against the action of the spring to create a vacuum at the tip of the suction head to draw fluid into the suction head.
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