Patent ID: 8870551

Claim:
A pump which is adapted to be operably moved or to use a high-pressure air cartridge to inflate an object comprising: a cylinder assembly defining a chamber and including first and second cylinders surrounding the chamber, with the second cylinder movable relative to the first cylinder linearly, with the first cylinder connected to a piston, the piston disposed between the first and second cylinders, with the piston operably moved to induce external air in and out of the chamber, with the first cylinder defining a first proximal end and a first distal end opposite to the first proximal end and the second cylinder defining a second proximal end and a second distal end opposite to the second proximal end respectively; a first nozzle head assembly detachably engaged with the second distal end of the second cylinder and including a main body, a valve stem kit, a safe device, and a joint, with the main body including an inlet end opposite an outlet end and defining a fixing end and a free end, with the inlet end including an air cartridge engagable therewith, with the outlet end including an object engagable therewith, with the free end including a first space and a second space, with the first space in fluid communication with the inlet end and the second space in fluid communication with the outlet end respectively, with the first and second spaces including a channel extended therebetween so as to be interconnected, with the valve stem kit including a valve stem for causing a closure of the air cartridge to open and a seal ring for preventing air leak, with the valve stem and the seal ring disposed within the joint, with the joint received in the first space, with the safe device disposed in the second space, with the first nozzle head assembly interconnecting the air cartridge and the object allowing high-pressure air in the air cartridge to flow through the first space, the channel, and the second space and including the safe device moved to an operating position that allows the high-pressure air into the object, with the first and second spaces, the channel, and the inlet and outlet ends never in fluid communication with the chamber, with the joint used for engaging with the air cartridge, with the inlet end defined in the joint; and a second nozzle head assembly engaged with the first cylinder and adjacent to the first proximal end of the first cylinder and in fluid communication with the chamber and defining a valve-receiving end adaptable to engage with the object.