Abstract: A liquid dispenser is mounted on a container and has a shell, a spout assembly, an injection assembly, a power pack and an activating assembly. The shell is mounted on the container and has an injection tube. The spout assembly is formed on and protrudes from the shell. The injection assembly is mounted in the shell pumps air into the injection tube to force liquid from the spout assembly. The activating assembly selectively activates the injection assembly and selectively seals or opens an air passage to the injection tube.

Abstract: A pump assembly for an aquarium includes a water circulation pump having a first casing and an aeration pump having a second casing, wherein the aeration pump is operated by the magnetic field of a rotating magnetic shaft that is rotatably mounted in the water circulation pump. The first casing and the second casing are connected to each other. A lever in the aeration pump is reciprocated continually to draw air into the pump and discharge air into the aquarium due to the magnetic field of the rotating magnetic shaft so that the coil is unnecessary in the aeration pump. Consequently, the pump assembly can be marketed for a lower price and save energy when used.

Abstract: A pump assembly for an aquarium includes a water circulation pump having a first casing and an aeration pump having a second casing, wherein the aeration pump is operated by the magnetic field of a rotating magnetic shaft that is rotatably mounted in the water circulation pump. The first casing and the second casing are connected to each other. A lever in the aeration pump is reciprocated continually to draw air into the pump and discharge air into the aquarium due to the magnetic field of the rotating magnetic shaft so that the coil is unnecessary in the aeration pump. Consequently, the pump assembly can be marketed for a lower price and save energy when used.

Abstract: A water circulation pump for an aquarium includes a shaft centrally engaged to the impeller. The free end of the shaft includes a pinion securely mounted to drive a reduction device. The reduction device includes a gear set having a final output gear that has an output shaft mounted to provide an extra power source. For example, the output shaft can drive a decorative device to make the aquarium looking more vivid and vigorous.

Abstract: A magnetic noise eliminator mounted around the signal line of a computer or the like to stabilize the magnetic field produced by the signal line and to protect it against outside noise. The magnetic noise eliminator has two symmetrical cover shells connected together by forcing the longitudinal teeth and longitudinal grooves of one cover shell into engagement with the longitudinal grooves and longitudinal teeth of the other, and two longitudinally grooved magnetic blocks abutted together by forcing the longitudinal flange and longitudinal recess of one magnetic block into engagement with the longitudinal recess and longitudinal flange of the other.