APPAREIL DESTINE A FAIRE DEVIER UN RACLEUR A L'INTERIEUR D'UNE TUYAUTERIE

摘要

Apparatus enabling controllable diversion of tool passage between multiple pipes connectible with a single pipe comprises: a housing forming a primary port communicable with a primary pipe to pass the tool, the housing also forming a series of secondary ports respectively communicable with multiple secondary pipes selectively to pass the tool; and, means forming an elongated intermediate passage to pass the tool and having one end remaining in direct communication with the primary port and an opposite end selectively directly communicable with the secondary ports in response to controlled movement of the passage within the housing, the passage being protected.