Patent ID: 6164938
Filing Date: 2000-12-26
Classification: F04B

Abstract:
A hand pump comprising:a cylinder including a first end and a second end, the cylinder further including a bore therein;a head mounted to the first end of the cylinder and including a compartment communicated with the bore of the cylinder;a piston rod including a first end reciprocatingly received in the bore of the cylinder and a second end beyond the second end of the cylinder, the piston rod including a chamber for receiving a gas container therein;an automatic inflation device attached to the second end of the piston rod, the automatic inflation device including:a valve engaging means adapted to be optionally engaged with a valve of an object to be inflated,means for opening the gas container in the chamber of the piston rod; andmeans for guiding gas from the gas container to the valve; anda manual inflation device mounted in the head and adapted to be optionally engaged with the valve of the object to be inflated;whereby the automatic inflation device is capable of acting as a handle to proceed with manual inflation to the valve of the object to be inflated via the manual inflation device.