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Class Information
Number: 313/278
Name: Electric lamp and discharge devices > With support and/or spacing structure for electrode and/or shield > For filament > Tension device for filament
Description: Devices which include means to apply a tension force to the filament.

Patents under this class:

Patent Number Title Of Patent Date Issued
7944138 Fluorescent display tube May. 17, 2011
7012361 Vacuum fluorescent display device and the support of the cathode thereof Mar. 14, 2006
6943487 Vacuum fluorescent display having complex-type filament supports Sep. 13, 2005
6664545 Gate for modulating beam of charged particles and method for making same Dec. 16, 2003
6617616 Chip-in-glass fluorescent display device Sep. 9, 2003
6555948 Electric incandescent lamp Apr. 29, 2003
5686794 Halogen incandescent lamp with filament positioning arrangement Nov. 11, 1997
5680009 Method of making an electric incandescent lamp, and electric lamp made in accordance with the method Oct. 21, 1997
5666018 Cathode with fast heat switch-on and switch-off mechanism and grid-type electron tube including such a cathode Sep. 9, 1997
5367220 Electric lamp with a holding frame for a lamp filament Nov. 22, 1994
5204583 Filament supporter for use in vacuum fluorescent display tubes and method for filament installation Apr. 20, 1993
5179317 Fluorescent luminous device having a vibration absorbing element Jan. 12, 1993
5140217 Electric lamp having a push-in filament insert for filament mounting Aug. 18, 1992
5061873 Incandecent lamp having high resistance to filament damage from vibration and shock Oct. 29, 1991
4973878 Filament structure and method of making such structure Nov. 27, 1990
4945285 Lamp for scanning apparatus Jul. 31, 1990
4895540 Filament support structure mounting method Jan. 23, 1990
4812710 Halogen incandescent lamp with high reliability filament connection, and method of manufacture Mar. 14, 1989
4728850 Mounting means for mounting spiral wire cathodes Mar. 1, 1988
4687964 Apparatus for mounting a field emission cathode Aug. 18, 1987
4658180 Flament support for a projection lamp Apr. 14, 1987
4366411 Electric filament lamps Dec. 28, 1982
4359665 Filament support for tubular lamp Nov. 16, 1982
4180757 Incandescent lamp with vibration-protected filament mount Dec. 25, 1979
4152621 Electron discharge device May. 1, 1979
4149105 Filament-fixing terminal for a fluorescent indicator tube Apr. 10, 1979
4134040 Adapter for wire electrode assembly of an electrostatic precipitator Jan. 9, 1979
4047074 Multi-digit fluorescent display tube with cathode filament support Sep. 6, 1977
3943418 Corona charging device Mar. 9, 1976

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