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Class Information
Number: 218/75
Name: High-voltage switches with arc preventing or extinguishing devices > Arc preventing or extinguishing devices > Air-current blowout > Sealed chamber > Busbar
Description: Subject matter wherein heavy copper straps or bars are used (a) to carry high currents or (b) to make a common connection between several circuits having a specific structural order or relationship.
Patents under this class:
| Patent Number |
Title Of Patent |
Date Issued |
| 6229690 |
Electrical switchgear |
May. 8, 2001 |
| 5991148 |
Metal-enclosed gas-insulated switchgear assembly |
Nov. 23, 1999 |
| 5777842 |
Transformer station and breaker apparatus |
Jul. 7, 1998 |
| 5757614 |
Gas insulated switchgear apparatus |
May. 26, 1998 |
| 5589674 |
Metal-encapsulated, gas-insulated switching installation |
Dec. 31, 1996 |
| 5578804 |
Metal-enclosed gas-insulated switching installation |
Nov. 26, 1996 |
| 5578805 |
Metal-enclosed gas-filled switchgear units |
Nov. 26, 1996 |
| 5373415 |
Gas filled power switching apparatus having a vertical type circuit breaker |
Dec. 13, 1994 |
| 5200881 |
Gas insulated switchgear |
Apr. 6, 1993 |
| 4774628 |
Metalclad substation subdivided into tight compartments |
Sep. 27, 1988 |
| 4704507 |
Encapsulated pressurized gas insulated high voltage installation |
Nov. 3, 1987 |
| 4700270 |
Metal-encapsulated gas-insulated switching system |
Oct. 13, 1987 |
| 4687890 |
Gas insulated switchgear |
Aug. 18, 1987 |
| 4570202 |
Gas-insulated switchgear equipment |
Feb. 11, 1986 |
| 4535383 |
Gas-insulated switchgear equipment |
Aug. 13, 1985 |
| 4493008 |
Gas-insulated switchgear |
Jan. 8, 1985 |
| 4045634 |
Gas insulated switch-gear apparatus |
Aug. 30, 1977 |
| 4032820 |
Horizontal double plane high voltage switching assembly |
Jun. 28, 1977 |
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