Patent ID: 8522936

Claim:
A sliding sleeve apparatus, comprising: a housing having a first internal passage extending therethrough and defining an internal shoulder in the first internal passage, the housing defining at least one flow port communicating the first internal passage outside the housing; a sleeve moveable within the first internal passage relative to the at least one flow port from a first position to a second position to control communication between the first internal passage and the at least one flow port, the sleeve having a second internal passage extending therethrough and having a distal end along an axis of the sleeve; and a cylindrical insert movable with the sleeve and defining a third internal passage extending from a first end of the cylindrical insert to a second end of the cylindrical insert, the first end breakably connected to the sleeve, the second end extending along the axis beyond the distal end of the sleeve, wherein the cylindrical insert engages its second end with the internal shoulder in advance of the distal end of the sleeve and break the connection with the sleeve in response to the engagement with the internal shoulder to absorb a first part of the movement of the sleeve from the first position to the second position.