Power circuit breaker

Year	Description
1991	Invention patented by Peter Flohr on March 7th, 1991. Abstract: An automatic cutout or a power circuit breaker with high current-limiting capacity contains no conductor connections of any kind, has only two weld or solder joints and requires no adjustment. This automatic cutout can be assembled progressively and purely mechanically from a minimum number of piece parts, without inconvenient connecting wires and without additional adjustment. Welding is prevented because the spark is discharge swiftly at the contacts and pressure of the movable contact in its bearing is guaranteed. As flexible connecting wires are dispensed with, fewer movable parts are necessary, and hence contact opening is more rapid. The excess-current trigger or the overcurrent trip is already calibrated and therefore the protective switch requires no adjustment. The excess-current trigger remains calibrated even after numerous disconnections.
2000	Invention patented by Takayoshi Endo, Norio Matsumura, and Goro Nakamura on February 6th, 2000. Abstract: The power circuit breaker has an igniter unit disposed in a cylindrical wall formed in a main housing. A holder is disposed in the cylindrical wall so as to oppose to the igniter unit. The holder has a boss engaged with the cylindrical wall, and a fuse element is held by the holder. Each end of the fuse element is electrically connected to one of a pair of interconnection terminals disposed in the main housing. The holder is locked by a locking lance formed in the main housing when each end of the fuse element has engaged with one of the interconnection terminals. The holder rests on the locking lance when the fuse element has been released from the interconnection terminals after activation of the igniter unit. The fuse element is engaged with and stopped by an insertion hole of the holder. The interconnection terminals each are a receptacle type terminal having two resilient contact strip portions one of which is connected to one end of the fuse element and the other of which is connected to an opposing terminal of a power circuit.
Source: selected by the editor from original sources.

Power circuit breaker

Invention: Power circuit breaker