|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||137/807 ; 137/811 ; 137/827|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 5 인용 특허 : 4|
An electromagnetic valve for use for discharge of molten metal from a container comprises a body (1) providing a discharge passage (2, 3) surrounded by an electrical induction coil (4), the passage having a first portion (2) adjacent the container having a radius greater than that of a second portion (3) extending from the first portion to the discharge end of the passage, whereby the frequency of the electric current supplied to the coil (4) can be chosen independently of the passage discharge diameter.
An electromagnetic valve, for use in discharge of molten metal from a container, comprising a body providing a discharge passage having a first end adjacent the container and a free end, the passage being adapted for flow of molten metal therethrough from the container under the action of gravity; an electrical induction coil located about the passage; and means for supplying a high frequency electric current to the coil to cause the coil to provide an alternating magnetic field which induces electric currents in molten metal in the passage, interaction ...