A modular connector for interconnecting a coilable tubing string with a downhole electrical tool and wherein an electric signal conducting cable extends through the tubing string and through the connector. The connector includes a swivel coupling having a coupling body with a spherical socket for receiving...http://www.google.es/patents/US4753291?utm_source=gb-gplus-sharePatente US4753291 - Modular wireline tool connector with swivel coupling
Modular wireline tool connector with swivel coupling
