20120067893 | LOCKING RECEPTACLE - Provided is a novel technology for determining the cause of a faulty insertion of a block body into a plug blade insertion hole, and for solving that problem fundamentally. The externally extending shapes of a ceiling plate and a rotary frame are made circular by using the novel technology as the core technology, to thereby make improvements including the integration of a locking function and a power supply connection function. A selection is made which of a rotary frame ( | 03-22-2012 |