Ostrolenk, Faber, Gerb & Soffen
Automatic pump
 An improved automatic pump capable of advantageously reducing manufacturing processes thereof as well as significantly preventing pressure decrease in a pump assembly by providing a pressure control tube and removing a sealing process thereof, which includes a motor for transmitting driving force to corresponding elements thereof; a working chamber formed in front of the motor, in which an impeller drivingly connected to a rotary shaft of the motor is disposed; a pump casing attachably attached to a predetermined portion of the working chamber and having a pressure tank with a predetermined size thereof; and a pressure control tube equipped with an air pressuring port disposed at a predetermined portion of the pump casing. 
Goldstar Co., Ltd.
F
F04D
inventional
Seong B. Dong I.
Lee Rhee