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US 4,450,329 AGranted
Gas circuit breaker
AssigneeMitsubishi Denki Kabushiki Kaisha
InventorsSatomi Arimoto, Shigeru Yamaji, Chikato Ishitobi
Life of this patent
Estimating the term…
Abstract
A gas circuit breaker is improved in arc-extinguishing effectiveness by introducing flow stabilizing and heat absorbing projections into a pressurized chamber of the device adjacent the arc generating structure.
Claims5
A gas circuit breaker, comprising;
- fixed and movable main contacts, and fixed and movable arc contacts, said main contacts being opened before said arc contacts, a pressure chamber and a chamber of negative pressure, and a passageway between the said two chambers openable by moving said movable arc contact, an inside surface of said pressure chamber being provided with axially extending radially inwardly directed projections for preventing a vortex flow in said pressure chamber when a fluid in said pressure chamber is made to flow.
Dependencies are inferred from the claim text.