Gripper block assembly for coiled tubing injector head
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
Aug 26, 2003
Grant Date -
Apr 25, 2002
app pub date -
Nov 5, 2001
filing date -
Jan 15, 1999
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
A coiled tubing injector head comprised of a plurality of endless chains, each of which are at least three links wide, that are positioned around a plurality of sprockets and/or idler rollers within the injector head. A plurality of gripper assemblies are positioned around the middle links of the endless chains. A bearing skate is positioned within the injector head, the bearing skate be comprised of a plurality of bearings in a staggered configuration, the bearings being adapted for rolling engagement with a portion of the gripper assemblies. An injector head is comprised of a plurality of halves, each of the halves being coupled to a positioning bar, the positioning bar having a plurality of openings formed therein, the openings adapted for use in varying the distance between the first and second halves.
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