|국가/구분||United States(US) Patent 등록|
|미국특허분류(USC)||137/375 ; 137/315 ; 251/368|
|발명자 / 주소|
|출원인 / 주소|
|인용정보||피인용 횟수 : 9 인용 특허 : 12|
Molten metal is delivered from a master furnace to the molten metal holding chamber of a low pressure casting machine by a launder assembly having a unitary, quickly replaceable, valve assembly including a valve which, when closed, prevents flow of the molten metal from the master furnace to the holding vessel. The valve has a plug mounted for rotation in a valve body which may be made from graphite. In a modification, the valve has a port centered in a valve plate and a movable plug which may be made from aluminum titanate. In operation, the valve is op...
A valve assembly for use in a low pressure casting apparatus, said valve assembly comprising: an elongate housing having a longitudinally-extending through bore; a valve body assembly spanning said through bore and comprising a valve plate made from a non-wetting ceramic material and having a valve port centered about a vertical axis; a valve closure member made from a non-wetting ceramic material and axially movable along said vertical axis to open and close said port; and a valve drive mechanism for moving said valve closure member along said axis.