Abstract: A portable direct current water-cleaner includes a handheld tank for storing a water chamber and a component chamber entirely therein. The water chamber is adapted for containing water and the component chamber for receiving a pump adapted for pumping the water, a filter adapted for filtering the water and a switch valve installed in the tank. The switch valve is operable between a first mode for directing the water from the pump to the filter so that the water passes through the filter and a second mode for bypassing the filter.

Abstract: A sprayer with a changeable volume includes a container, a pump, a first pipe, a second pipe and a nozzle. The container includes an upper wall and a lower wall. The upper wall can be compressed while not containing water and extensible for containing water. The lower wall is connected to the upper wall. The pump is put in a space defined in the lower wall. The first pipe is led to the pump from a space defined in the upper wall. The second pipe is led to the exterior of the container from the pump. The nozzle is connected to the second pipe.

Abstract: A portable direct current water-cleaner includes a tank for containing water, a pump installed in the tank for pumping the water, a filter installed in the tank for filtering the water and a valve installed in the tank and movable between a first mode for directing the water from the pump to the filter so that the pump makes the water travel through the filter fast and a second position for bypassing the filter.

Abstract: A sprayer with a changeable volume includes a container, a pump, a first pipe, a second pipe and a nozzle. The container includes an upper wall and a lower wall. The upper wall can be compressed while not containing water and extensible for containing water. The lower wall is connected to the upper wall. The pump is positioned in a space defined in the lower wall. The first pipe is directed to the pump from a space defined in the upper wall. The second pipe is directed to the exterior of the container from the pump. The nozzle is connected to the second pipe.

Abstract: A valve includes a housing, a first nozzle, a second nozzle and a switch. The housing defines an inlet channel for communication with a pump, a chamber in communication with the inlet channel, a first outlet channel in communication with the chamber and a second outlet channel in communication with the chamber. The first nozzle is in communication with the first outlet channel. The second nozzle is in communication with the second outlet channel. The switch is received in the chamber and movable between a first position where the inlet is communicated with the first outlet channel through the chamber and a second position where the inlet is communicated with the second outlet channel through the chamber. The first nozzle is for engagement with an inlet of a tire. The second nozzle is for engagement with an inlet of a pneumatically adjustable cushion.

Abstract: A valve coupling device includes a body having a transverse hole between two ends of the body. A first nozzle is mounted in an end of the body for coupling with a valve. A first chamber and a second chamber are mounted in the other end of the body and both in communication with the transverse hole. A switch member is pivotally extended through the transverse hole of the body. A second nozzle for coupling with a valve of another type is mounted in the switch member and in communication with the second chamber. When the switch member is in a first position, the first chamber is in communication with the first nozzle and the second chamber is blocked. When the switch member is in a second position, the second chamber is in communication with the second nozzle and the first chamber is blocked.

Abstract: There is disclosed a sprayer with a changeable volume. The sprayer includes a container, a pump, a first pipe, a second pipe and a nozzle. The container includes an upper wall and a lower wall. The upper wall can be compressed while not containing water and extensible for containing water. The lower wall is connected to the upper wall. The pump is positioned in a space defined in the lower wall. The first pipe is directed to the pump from a space defined in the upper wall. The second pipe is directed to the exterior of the container from the pump. The nozzle is connected to the second pipe.

Abstract: A sprayer with a changeable volume includes a container, a pump, a first pipe, a second pipe and a nozzle. The container includes an upper wall and a lower wall. The upper wall can be compressed while not containing water and extensible for containing water. The lower wall is connected to the upper wall. The pump is put in a space defined in the lower wall. The first pipe is led to the pump from a space defined in the upper wall. The second pipe is led to the exterior of the container from the pump. The nozzle is connected to the second pipe.

Abstract: A sprayer with a changeable volume includes a container, a pump, a first pipe, a second pipe and a nozzle. The container includes an upper wall and a lower wall. The upper wall can be compressed while not containing water and extensible for containing water. The lower wall is connected to the upper wall. The pump is put in a space defined in the lower wall. The first pipe is led to the pump from a space defined in the upper wall. The second pipe is led to the exterior of the container from the pump. The nozzle is connected to the second pipe.

Abstract: A valve coupling device includes a body having a transverse hole between two ends of the body. A first nozzle is mounted in an end of the body for coupling with a valve. A first chamber and a second chamber are mounted in the other end of the body and both in communication with the transverse hole. A switch member is pivotally extended through the transverse hole of the body. A second nozzle for coupling with a valve of another type is mounted in the switch member and in communication with the second chamber. When the switch member is in a first position, the first chamber is in communication with the first nozzle and the second chamber is blocked. When the switch member is in a second position, the second chamber is in communication with the second nozzle and the first chamber is blocked.

Abstract: A valve includes a housing, a first nozzle, a second nozzle and a switch. The housing defines an inlet channel for communication with a pump, a chamber in communication with the inlet channel, a first outlet channel in communication with the chamber and a second outlet channel in communication with the chamber. The first nozzle is in communication with the first outlet channel. The second nozzle is in communication with the second outlet channel. The switch is received in the chamber and movable between a first position where the inlet is communicated with the first outlet channel through the chamber and a second position where the inlet is communicated with the second outlet channel through the chamber. The first nozzle is for engagement with an inlet of a tire. The second nozzle is for engagement with an inlet of a pneumatically adjustable cushion.

Abstract: A valve includes a housing, a first nozzle, a second nozzle and a switch. The housing defines an inlet channel for communication with a pump, a chamber in communication with the inlet channel, a first outlet channel in communication with the chamber and a second outlet channel in communication with the chamber. The first nozzle is in communication with the first outlet channel. The second nozzle is in communication with the second outlet channel. The switch is received in the chamber and movable between a first position where the inlet is communicated with the first outlet channel through the chamber and a second position where the inlet is communicated with the second outlet channel through the chamber. The first nozzle is for engagement with an inlet of a tire. The second nozzle is for engagement with an inlet of a pneumatically adjustable cushion.

Abstract: Inflating cylinder with both inflating and air sucking effects, including: a cylinder body; a piston disposed in the cylinder body; a piston stem driven by a user's hand for driving the piston; a first one-way valve disposed at front end of the cylinder body, permitting the air to only flow from the interior of the cylinder body to outer side; a second one-way valve disposed at front end of the cylinder body, permitting the air to only flow from outer side into the cylinder body; and at least one air guiding member formed with an axial air way for air flow to flow therethrough. The air guiding member is detachably connected with the front end of the cylinder body and communicates with one of the one-way valves.

Abstract: A tire pump includes a head portion with a tubular portion extending therefrom and a main passage is defined through the head portion and communicates with the tubular portion, a connecting member slidably mounted to the tubular portion and having at least one first passage defined therethrough, a first cylinder retractably mounted to the tubular portion and having one of two ends fixedly connected to the connecting member and a first member slidably received therein which is fixedly connected to a free end of the tubular portion and detachably connected to the connecting member by an actuating device and has a uni-directional valve disposed therein. At least one second cylinder is retractably mounted to the first cylinder and has a second member slidably received therein which has a uni-directional valve disposed therein and a portion fixedly received in the other end of the first cylinder. A third member is fixedly received in the second cylinder and has a uni-directional valve disposed thereto.

Abstract: A hand air pump includes a cylinder having a relatively small chamber and a relatively large chamber defined therein. A relatively small piston is slidably received in the relatively small chamber, and a relatively large piston is slidably received in the relatively large chamber. The two pistons are connected to an operative handle outside the cylinder. Air inside the relatively large chamber is accumulated in the relatively small chamber and is then outputted by the relatively small piston.