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| Number | Title | Issue Date |
| 4322591 | Circuit breaker with means for producing a flow of arc-extinguishing gas A puffer type circuit breaker is provided with a pump means consisting of a piston and a cylinder for producing a blast of arc-extinguishing gas. The piston is axially displaceable against a spring force, and the cylinder is joined to the movable contact ... | 03/30/1982 |
| 4278860 | Arc driven single pressure type circuit breaker A sulfur hexafluoride interrupter structure uses sulfur hexafluoride at supercritical pressure and includes two spaced pistons of different diameters disposed on opposite sides of the contact arcing region. The pistons are connected to a source of biasing... | 07/14/1981 |
| 4229627 | Gas puffer type current interrupter and method The invention provides for a gas puffer type current interrupter having a pair of separable contacts, one of which is surrounded by a nozzle formed of electrically insulating material. Upon separation, an arc is drawn between the contacts through the thro... | 10/21/1980 |
| 4123637 | High voltage air disconnect switch incorporating a puffer-type load break switch An air disconnect switch incorporates a unique arrangement of an ice breaking self-polishing current transfer horn arrangement which transfers the current to a puffer-type interrupter to effect circuit interruption prior to the disconnect switch being ful... | 10/31/1978 |
| 3955057 | Electric switch Electric switch includes a fixed contact member and a movable contact member movable from a position wherein it is in contact with the fixed contact member to a position wherein it is spaced therefrom, one of the members having a nozzle-like inner channel... | 05/04/1976 |
| 3941962 | Gas blast circuit breaker A gas blast circuit breaker has fixed and movable contact sets, the latter mounted on a cylinder slidable on a fixed piston to generate a gas blast on separation of the contact sets. Each contact set consists of radially inner and outer contacts, the inne... | 03/02/1976 |
| 3941963 | Circuit breaker In a circuit breaker having puffer type circuit breaking units housed within a tank of metal material, an inspection opening is formed in the tank side wall at a position opposite to a contact assembly in each of the circuit breaking units and is tightly ... | 03/02/1976 |
