Abstract: A heat dissipation configuration with water pump assembly includes a heat dissipation assembly, opposite first and second tanks respectively connected to an upper end and a lower end of the heat dissipation assembly, a water pump device mounted on the second tank and including a rotational impeller unit, and a joint assembly including an inlet joint connected to the second tank and a second pipe and an outlet joint connected to the water pump device and a first pipe. The first pipe and the second pipe extend to a heat generation unit. The water pump device and the joint assembly, situated at the lower end, combine to force liquid to move in a downstream direction and concurrently increase pressure of the liquid under the rotation of the impeller unit so that the liquid is continuously pumped from the second tank into the heat generation unit for dissipating heat quickly.

Abstract: An air-inlet controlling assembly for a pneumatic tool having a gun shaped shell with a chamber and a handle communicated with the chamber has an air-inlet assembly, a cylinder assembly and a control valve. The air-inlet assembly is mounted in the handle of the shell and has an inlet tube, an airtight sleeve and a washer. The cylinder assembly is mounted in the shell, contacts with the airtight sleeve of the air-inlet assembly and has a cylinder and a rotor. The control valve is connected to the cylinder assembly and has a connecting portion and an operating portion.

Abstract: An air-inlet controlling assembly for a pneumatic tool having a gun shaped shell with a chamber and a handle communicated with the chamber has an air-inlet assembly, a cylinder assembly and a control valve. The air-inlet assembly is mounted in the handle of the shell and has an inlet tube, an airtight sleeve and a washer. The cylinder assembly is mounted in the shell, contacts with the airtight sleeve of the air-inlet assembly and has a cylinder and a rotor. The control valve is connected to the cylinder assembly and has a connecting portion and an operating portion.

Abstract: A head has a head portion and a connecting portion. The head portion is adapted for receiving the ratchet mechanism and has an inner space, a mouth, two side walls and an opening. The inner space is defined between the top and the bottom to receive the ratchet mechanism of the power ratchet tool. The mouth is defined in the front end and communicates with the inner space to define the side walls between the top and the bottom. The opening is defined in the bottom and communicates with the inner space for a stub of the ratchet mechanism extending out from the opening. The connecting portion is connected to the rear end of the head portion for being attached to the handle of the power ratchet tool. Accordingly, a head with an enhanced structural strength is provided.

Abstract: A magnetized fan and a method of fabricating the same are disclosed. The fan has a hub and a plurality of blades radially extending from a periphery of the hub. The fan is fabricated from magnetic material. Thereby, sectors are formed multiple N and S poles. To fabricate the fan, the N and S poles are arranged in accordance with the requirement of the sectors, and the magnetic material is injected to the fan according to the arrangement of the N and S poles. The magnetic material is then magnetized to generate magnetic force.