초록 ▼

A flat plate bushing is described which eliminates extensive precious metal use in drain and/or production bushings. The bushing utilizes a novel arrangement of insulation members and support plates that allow the bushing to be electrically heated and a novel method of connecting the bushing to a po

A flat plate bushing is described which eliminates extensive precious metal use in drain and/or production bushings. The bushing utilizes a novel arrangement of insulation members and support plates that allow the bushing to be electrically heated and a novel method of connecting the bushing to a power source using the bushing face plate as the connection point is also shown.

대표청구항 ▼

A bushing assembly comprising a flat precious metal plate being provided with at least one hole therein, an insulation member positioned below said precious metal plate and having at least one hole therein surrounding the hole in said precious metal plate, a frame member surrounding said insulation

A bushing assembly comprising a flat precious metal plate being provided with at least one hole therein, an insulation member positioned below said precious metal plate and having at least one hole therein surrounding the hole in said precious metal plate, a frame member surrounding said insulation member and having means to circulate cooling fluid therethrough, an insulator covering the upper surface and at least a portion of the sides of said frame, a support plate positioned below said insulation member and said frame and having at least one hole therein communicating with the holes of said precious metal plate and said insulation member, means to electrically connect said precious metal plate to a power source and means to attach said assembly to a source of molten glass with the precious metal plate surface facing said molten glass source.