Pumps – With condition responsive pumped fluid control
Patent
1975-05-22
1976-05-25
Freeh, William L.
Pumps
With condition responsive pumped fluid control
417417, 417505, F04B 3908
Patent
active
039589021
ABSTRACT:
An electromagnetic pump comprising an electromagnetic coil, magnetic paths constituting a yoke arranged in the electromagnetic coil, an electromagnetic plunger reciprocatorily mounted in the electromagnetic coil, and a main body including a suction port, a discharge port and suction and discharge valve means and connected to the electromagnetic coil. At least one of the magnetic paths has a reduced cross-sectional area portion at one end portion thereof disposed on the longitudinal axis of the electromagnetic coil and is formed with a magnetic gap between the reduced cross-sectional area portion and the end portion of the electromagnetic plunger. A movable iron member of the cylindrical shape is arranged in the magnetic gap in which the lines of magnetic force are concentrated in passing through the magnetic path. The movable iron member is moved upwardly by the electromagnetic force to facilitate further concentration of the lines of magnetic force therein. By this arrangement, the movable iron member functions to open a valve seat when an electric current is passed to the electromagnetic coil and increases the output of the pump.
REFERENCES:
patent: 2765747 (1956-10-01), Aumick
patent: 2770394 (1956-11-01), Mueller
patent: 3380387 (1968-04-01), Kofink
patent: 3468257 (1969-09-01), Kofink
patent: 3877841 (1975-04-01), Nakamura
Arima Shizuo
Toyoda Akira
Freeh William L.
La Pointe G. P.
Taisan Industrial Co., Ltd.
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