Abstract: A pumping device with suction/injection function for changing fluid. The pumping device including: a barrel; a bottom portion, connected to the barrel; a pumping mechanism, configured to drain fluid out from or inject fluid into the barrel; and at least one wheel, connected to the bottom portion so that the pumping device is easy to move. Whereby, the pumping device can be moved easily.

Abstract: A suction cup is provided, including: a cup body, including a sucking face, the cup body defining an axial direction perpendicular to the sucking face; a pump, connected to an end of the cup body opposite to the sucking face, the pump including a first passageway, a direction in which the first passageway extends and the axial direction forming an included angle therebetween; a movable handle, slidably disposed within the first passageway, including a piston.

Abstract: The pumping device includes a barrel, a cover, a pumping mechanism, a positioning ring, and plural posts. The barrel has plural first positioning portions extending upward near a bottom thereof. The cover is disposed on the barrel to selectively close the barrel. The pumping mechanism is disposed on the cover for pumping liquid in the receiving space outward or pumping liquid outside into the receiving space. The positioning ring is detachably combined by two semi-ring bodies and is sleeved onto the cover and the barrel to position the cover on the barrel. The positioning ring has plural second positioning portions. Each of the posts connects the positioning ring and the bottom of the barrel therebetween. Each post is detachably connected to one of the first positioning portions and one of the second positioning portions therebetween so that the two semi-ring bodies are unable to separate freely.

Abstract: A tube bender is provided, including: a fixation portion, configured to be held by a fixation base; a plurality of bending portions, connected with the fixation portion, each of the plurality of bending portions has a circumferential guiding face, at least two of curvature of radiuses of the circumferential guiding faces of the plurality of bending portions are different.

Abstract: A fluid pumping device includes a barrel body and a piston mechanism. The barrel body has a cavity. The piston mechanism includes a piston member, a first annular plug, and a second annular plug. The piston member movably extends into the cavity. The piston member has two annular grooves where the first and the second annular plugs are disposed respectively. Each of the first the second annular plugs has an annular base section and an annular protrusion section. The annular protrusion section has a first outer annular abutting face. The annular base section has an outer annular base face. The first outer annular abutting face abuts against the inner wall of the cavity.

Abstract: A fluid injection device for vehicle radiator includes a main body. The main body includes a negative pressure device, a container, an injection opening, and a switching mechanism. The injection opening is adapted for connecting with an opening of a radiator of a vehicle. The negative pressure device and the container communicate the injection opening respectively.