公开(公告)号：US4415830A

公开(公告)日：1983-11-15

申请号：US298073

申请日：1981-08-31

申请人： John W. Pugh ,  Francis W. Pikus ,  James A. Graves ,  John E. McMillan ,  John L. Walter

发明人： John W. Pugh ,  Francis W. Pikus ,  James A. Graves ,  John E. McMillan ,  John L. Walter

IPC分类号： H01J61/36 ,  H01K1/20 ,  H01K1/40 ,  H01J5/50

CPC分类号： H01K1/40 ,  H01K1/20

摘要： An improved inlead construction for an electric lamp is disclosed which utilizes an iron alloy containing sufficient silicon to avoid transformation of the inlead from the alpha ferrite phase to the gamma austenite phase at lamp operation temperatures. This precludes debilitating deformation of the inlead wires caused by on-off cycling of the lamp and concomitant cycling of the wire through the alpha to gamma transformation range. Such deformation can lead to structural or operational failure if the inleads become disconnected or electrically shorted from the resistive filament during lamp operation. In a preferred lamp construction, a pair of the improved inlead wires serve as the sole means of physical support for a resistive incandescent filament directly connected thereto and said inlead wires can further be coated with a dissimilar metal for higher lamp loading requirements in order to help avoid iron migration which can produce deterioration of the resistive incandescent filament.

摘要翻译： 公开了一种用于电灯的改进的直埋结构，其利用含有足够硅的铁合金以避免在灯操作温度下从α铁素体相转移到γ奥氏体相。 这排除了由灯的开 - 关循环引起的引线的衰弱变形，并且通过α到γ转变范围伴随着电线的循环。 如果在灯操作期间线圈中的线圈断开或电短路，则这种变形可能导致结构或操作故障。 在优选的灯结构中，一对改进的引线用作直接连接到其上的电阻白炽灯的物理支撑的唯一装置，并且所述导线可以进一步用不同的金属涂覆以提高灯的负载要求，以帮助 避免铁迁移，这可能导致电阻白炽灯丝的劣化。

公开(公告)号：USD324450S

公开(公告)日：1992-03-10

申请号：US537761

申请日：1990-06-14

申请人： John W. Pugh

设计人： John W. Pugh

公开(公告)号：US5072147A

公开(公告)日：1991-12-10

申请号：US521201

申请日：1990-05-09

申请人： John W. Pugh ,  Donald L. Bly

发明人： John W. Pugh ,  Donald L. Bly

IPC分类号： C22C27/04 ,  G02B5/28 ,  H01K1/08 ,  H01K7/00

CPC分类号： H01K1/08

摘要： Improved tungsten coil filaments having good sag resistance and useful in double ended, high intensity and energy efficient tungsten halogen lamps having an IR reflecting filter on the filament chamber. These coil filaments have a microstructure which is a large, elongated and interlocking grain structure produced by a high temperature heat treatment process.

公开(公告)号：US4291444A

公开(公告)日：1981-09-29

申请号：US937545

申请日：1978-08-28

申请人： Lewis V. McCarty ,  John W. Pugh

发明人： Lewis V. McCarty ,  John W. Pugh

IPC分类号： H01K3/02 ,  B21F3/04 ,  B21F45/00

CPC分类号： H01K3/02 ,  Y10T29/49812

摘要： An electric lamp filament of tungsten is disclosed that has been coiled and heat-treated to at least 1600.degree. C. on a wire mandrel containing molybdenum but which is essentially free of molybdenum contamination. A barrier layer of tungsten or tantalum is provided on said mandrel to preclude the molybdenum contamination and the coated mandrel can thereafter be dissolved from the uncontaminated tungsten filament coil in an acid mixture.

摘要翻译： 公开了一种钨丝灯，其已经在包含钼但是基本上没有钼污染物的丝心轴上被卷绕和热处理至少1600℃。 在所述心轴上设置有钨或钽的阻挡层以排除钼污染物，并且其后涂覆的芯棒可以在酸混合物中从未污染的钨丝线圈中溶解。