Patent ID: 6623249
Filing Date: 2003-09-23
Classification: F04B,F04D

Abstract:
An air pump, comprising: a housing having an atmospheric air inlet and an outlet for pressurized air adapted to be connected to an inflatable object; a relatively high air volume low pressure fan pump enclosed in said housing, said fan pump having an atmospheric air intake opening and a pressurized air discharge opening, a first pressurized air conduit connecting the fan pump discharge opening to said outlet for pressurized air; a relatively low volume high pressure diaphragm pump enclosed in said housing, said diaphragm pump having an atmospheric air intake opening and a pressurized air discharge opening; a second pressurized air conduit connecting the diaphragm pump discharge opening to said outlet for pressurized air; and a valve having a high air volume position and a high pressure position, said valve connecting both said first and second conduits to said outlet when it is in its high air volume position and said valve diverting air from said second pressurized air conduit so that only said diaphragm pump discharges pressurized air into said outlet when said valve is in its high pressure position.