A lamp socket in which a rubber water sealing cushion is mounted in a top recess at the center of the transversely grooved top wall of the socket body and covered around the electric wire to protect the positive metal contact plate against outside water, a rubber socket is mounted inside the socket...http://www.google.com.au/patents/US5743757?utm_source=gb-gplus-sharePatent US5743757 - Lamp socket with water sealing means
