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| Number | Title | Issue Date |
| 7292156 | Remote tapping method and system for internally tapping a conduit Disclosed is a method, system and apparatus for use in remotely and internally tapping a conduit. The method is performed, at least partially, by an automatic mechanism or robot configured to effectively perform the tasks and various steps of the method. The method ... | 11/06/2007 |
| 7269520 | Method for determining pressure capability in conduit Disclosed is a method that provides for the calculation and prediction of hoop strength of an expanded pipe, preferably a PVC pipe or conduit. The method includes the steps of: (a) determining hoop strength as a function of relative wall thickness; (b) determining W... | 09/11/2007 |
| 7000643 | Bladder system for conduit expansion Disclosed is a bladder system for use in conjunction with a conduit expansion process and system. In addition, the bladder system is in operative communication with an injection material handling system. The bladder system includes a bladder element with injection h... | 02/21/2006 |
| 6982051 | Fusion process for conduit Disclosed is a method and apparatus for use in a fusion process for conduit. The method includes the steps of: removably positioning a first terminal edge of a first conduit portion with a first terminal edge of a second conduit portion; facing the terminal edges of... | 01/03/2006 |
