This invention relates to a safe light bulb socket structure mainly used for a C7 or C9 type light bulb. The socket shell of the socket structure according to the invention has an extended thin non-rigid sheet or an extended thin displaceable rib formed on its top and a thin annular appendage integrally...http://www.google.com/patents/US5643006?utm_source=gb-gplus-sharePatent US5643006 - Safe light bulb socket structure
